What is the best way to travel from Phoenix, AZ to St. Louis, MO?
Looking for a trip? Check and compare all the available Flights and Buses to St. Louis, MO from Phoenix, AZ. Look at different modes of transportation, search for the cheapest tickets, fastest rides and most popular stations, and see all 2 available companies to find your perfect trip!
What is the cheapest way to reach St. Louis, MO from Phoenix, AZ?
You can reach St. Louis, MO with just £64 by taking a Flight from Frontier Airlines, but there are many more cheap offers: we have selected the best ones for you for the next few days here.
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Frontier Airlines24h 26m012:05Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport14:31St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 03/06/2026 12:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 14:31:00. 50 Economy ticket for £64 per person are available. Travel duration is 24h 26m
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Allegiant Air24h 42m014:51Phoenix-Mesa Gateway AirportBus Stop17:33St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 03/06/2026 14:51:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 17:33:00. 50 Economy ticket for £169 per person are available. Travel duration is 24h 42m
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United Airlines9h 55m011:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:35St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 03/06/2026 11:40:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 03/06/2026 23:35:00. 50 Economy ticket for £173 per person are available. Travel duration is 9h 55m
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Alaska Airlines14h 56m015:54Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport08:50St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 03/06/2026 15:54:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 08:50:00. 50 Economy ticket for £202 per person are available. Travel duration is 14h 56m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 03/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 05/06/2026 07:10:00. 50 Economy ticket for £103 per person are available. Travel duration is 30h 25m
Cheapest Flights Wednesday
Cheapest Buses Wednesday
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Frontier Airlines12h 8m005:15Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 05:15:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 19:23:00. 50 Economy ticket for £89 per person are available. Travel duration is 12h 8m
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Frontier Airlines10h 31m007:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport20:11St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 07:40:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 20:11:00. 50 Economy ticket for £89 per person are available. Travel duration is 10h 31m
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Allegiant Air45h 50m009:05Phoenix-Mesa Gateway AirportBus Stop08:55St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 04/06/2026 09:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 08:55:00. 50 Economy ticket for £175 per person are available. Travel duration is 45h 50m
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Allegiant Air33h 1m009:10Phoenix-Mesa Gateway AirportBus Stop20:11St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 04/06/2026 09:10:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 05/06/2026 20:11:00. 50 Economy ticket for £181 per person are available. Travel duration is 33h 1m
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 15:46:00. 50 Economy ticket for £188 per person are available. Travel duration is 6h 56m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 04/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 05/06/2026 22:45:00. 50 Economy ticket for £97 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 04/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 07:10:00. 50 Economy ticket for £107 per person are available. Travel duration is 30h 25m
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Greyhound US37h 25m007:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 05/06/2026 22:45:00. 50 Economy ticket for £114 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 22:45:00. 50 Economy ticket for £115 per person are available. Travel duration is 56h 5m
Cheapest Flights Thursday
Cheapest Buses Thursday
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 05/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 22:45:00. 50 Economy ticket for £106 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 05/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 07:10:00. 50 Economy ticket for £113 per person are available. Travel duration is 30h 25m
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Greyhound US37h 25m007:20Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 05/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 22:45:00. 50 Economy ticket for £117 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 05/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 22:45:00. 50 Economy ticket for £120 per person are available. Travel duration is 56h 5m
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Frontier Airlines25h 6m016:17Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 05/06/2026 16:17:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 19:23:00. 50 Economy ticket for £141 per person are available. Travel duration is 25h 6m
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Frontier Airlines22h 32m018:51Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 05/06/2026 18:51:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 19:23:00. 50 Economy ticket for £141 per person are available. Travel duration is 22h 32m
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Alaska Airlines7h 37m007:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport16:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 05/06/2026 07:00:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 05/06/2026 16:37:00. 50 Economy ticket for £194 per person are available. Travel duration is 7h 37m
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Allegiant Air31h 37m007:57Phoenix-Mesa Gateway AirportBus Stop17:34St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 05/06/2026 07:57:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 17:34:00. 50 Economy ticket for £202 per person are available. Travel duration is 31h 37m
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Allegiant Air29h 37m009:57Phoenix-Mesa Gateway AirportBus Stop17:34St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 05/06/2026 09:57:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 17:34:00. 50 Economy ticket for £211 per person are available. Travel duration is 29h 37m
Cheapest Buses Friday
Cheapest Flights Friday
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Frontier Airlines16h 3m023:30Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport17:33St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 23:30:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 17:33:00. 50 Economy ticket for £94 per person are available. Travel duration is 16h 3m
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Frontier Airlines12h 8m005:15Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 05:15:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 19:23:00. 50 Economy ticket for £119 per person are available. Travel duration is 12h 8m
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Allegiant Air47h 50m007:05Phoenix-Mesa Gateway AirportBus Stop08:55St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 06/06/2026 07:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 08/06/2026 08:55:00. 50 Economy ticket for £169 per person are available. Travel duration is 47h 50m
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Allegiant Air32h 28m007:05Phoenix-Mesa Gateway AirportBus Stop17:33St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 06/06/2026 07:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 17:33:00. 50 Economy ticket for £169 per person are available. Travel duration is 32h 28m
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 15:46:00. 50 Economy ticket for £195 per person are available. Travel duration is 6h 56m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 06/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 22:45:00. 50 Economy ticket for £107 per person are available. Travel duration is 35h 10m
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FlixBus56h 5m012:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 22:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 56h 5m
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Greyhound US37h 25m007:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 22:45:00. 50 Economy ticket for £122 per person are available. Travel duration is 37h 25m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 06/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 07:10:00. 50 Economy ticket for £124 per person are available. Travel duration is 30h 25m
Cheapest Flights Saturday
Cheapest Buses Saturday
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Frontier Airlines12h 8m005:15Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 05:15:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 19:23:00. 50 Economy ticket for £93 per person are available. Travel duration is 12h 8m
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Allegiant Air46h 15m016:50Phoenix-Mesa Gateway AirportBus Stop17:05St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 07/06/2026 16:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 17:05:00. 50 Economy ticket for £194 per person are available. Travel duration is 46h 15m
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 15:46:00. 50 Economy ticket for £210 per person are available. Travel duration is 6h 56m
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Alaska Airlines7h 37m007:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport16:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 07:00:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 16:37:00. 50 Economy ticket for £239 per person are available. Travel duration is 7h 37m
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Aeroméxico36h 38m023:59Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport14:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 23:59:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 14:37:00. 50 Economy ticket for £624 per person are available. Travel duration is 36h 38m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 07/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 22:45:00. 50 Economy ticket for £103 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m007:20Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 07/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 22:45:00. 50 Economy ticket for £109 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 07/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 22:45:00. 50 Economy ticket for £109 per person are available. Travel duration is 56h 5m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 07/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 07:10:00. 50 Economy ticket for £116 per person are available. Travel duration is 30h 25m
Cheapest Flights Sunday
Cheapest Buses Sunday
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Frontier Airlines32h 20m022:27Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport08:47St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 22:27:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 10/06/2026 08:47:00. 50 Economy ticket for £92 per person are available. Travel duration is 32h 20m
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Allegiant Air24h 19m015:11Phoenix-Mesa Gateway AirportBus Stop17:30St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 08/06/2026 15:11:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 17:30:00. 50 Economy ticket for £180 per person are available. Travel duration is 24h 19m
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United Airlines11h 51m010:06Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:57St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 10:06:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 08/06/2026 23:57:00. 50 Economy ticket for £198 per person are available. Travel duration is 11h 51m
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Alaska Airlines27h 38m018:16Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:54St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 18:16:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 23:54:00. 50 Economy ticket for £226 per person are available. Travel duration is 27h 38m
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Aeroméxico36h 38m023:59Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport14:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 23:59:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 10/06/2026 14:37:00. 50 Economy ticket for £550 per person are available. Travel duration is 36h 38m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 08/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 22:45:00. 50 Economy ticket for £94 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 08/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 10/06/2026 07:10:00. 50 Economy ticket for £94 per person are available. Travel duration is 30h 25m
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FlixBus56h 5m012:40Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 08/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 10/06/2026 22:45:00. 50 Economy ticket for £102 per person are available. Travel duration is 56h 5m
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Greyhound US37h 25m007:20Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 08/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 22:45:00. 50 Economy ticket for £104 per person are available. Travel duration is 37h 25m
Cheapest Flights Monday
Cheapest Buses Monday
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Frontier Airlines6h 2m011:21Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 11:21:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 19:23:00. 50 Economy ticket for £67 per person are available. Travel duration is 6h 2m
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Frontier Airlines17h 36m022:32Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport18:08St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 22:32:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 10/06/2026 18:08:00. 50 Economy ticket for £71 per person are available. Travel duration is 17h 36m
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United Airlines8h 18m011:12Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport21:30St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 11:12:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 21:30:00. 50 Economy ticket for £152 per person are available. Travel duration is 8h 18m
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 15:46:00. 50 Economy ticket for £167 per person are available. Travel duration is 6h 56m
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Alaska Airlines10h 8m011:46Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:54St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 11:46:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 23:54:00. 50 Economy ticket for £195 per person are available. Travel duration is 10h 8m
Cheapest Flights Tuesday
What are the fastest trips from Phoenix, AZ to St. Louis, MO?
You can get to St. Louis, MO from Phoenix, AZ in just 6h 2m with a Flight from Frontier Airlines. But this is just one option, click on any of the offers below to compare it with the other available modes of transportations.
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United Airlines9h 55m011:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:35St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 03/06/2026 11:40:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 03/06/2026 23:35:00. 50 Economy ticket for £173 per person are available. Travel duration is 9h 55m
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Alaska Airlines14h 56m015:54Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport08:50St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 03/06/2026 15:54:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 08:50:00. 50 Economy ticket for £202 per person are available. Travel duration is 14h 56m
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Frontier Airlines24h 26m012:05Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport14:31St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 03/06/2026 12:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 14:31:00. 50 Economy ticket for £64 per person are available. Travel duration is 24h 26m
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Allegiant Air24h 42m014:51Phoenix-Mesa Gateway AirportBus Stop17:33St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 03/06/2026 14:51:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 17:33:00. 50 Economy ticket for £169 per person are available. Travel duration is 24h 42m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 03/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 05/06/2026 07:10:00. 50 Economy ticket for £103 per person are available. Travel duration is 30h 25m
Fastest Flights Wednesday
Fastest Buses Wednesday
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 15:46:00. 50 Economy ticket for £188 per person are available. Travel duration is 6h 56m
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Frontier Airlines10h 31m007:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport20:11St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 07:40:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 20:11:00. 50 Economy ticket for £89 per person are available. Travel duration is 10h 31m
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Frontier Airlines12h 8m005:15Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 05:15:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 04/06/2026 19:23:00. 50 Economy ticket for £89 per person are available. Travel duration is 12h 8m
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Allegiant Air33h 1m009:10Phoenix-Mesa Gateway AirportBus Stop20:11St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 04/06/2026 09:10:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 05/06/2026 20:11:00. 50 Economy ticket for £181 per person are available. Travel duration is 33h 1m
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Allegiant Air45h 50m009:05Phoenix-Mesa Gateway AirportBus Stop08:55St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 04/06/2026 09:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 08:55:00. 50 Economy ticket for £175 per person are available. Travel duration is 45h 50m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 04/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 07:10:00. 50 Economy ticket for £107 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 04/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 05/06/2026 22:45:00. 50 Economy ticket for £97 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m007:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 05/06/2026 22:45:00. 50 Economy ticket for £114 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 04/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 22:45:00. 50 Economy ticket for £115 per person are available. Travel duration is 56h 5m
Fastest Flights Thursday
Fastest Buses Thursday
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Alaska Airlines7h 37m007:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport16:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 05/06/2026 07:00:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 05/06/2026 16:37:00. 50 Economy ticket for £194 per person are available. Travel duration is 7h 37m
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Frontier Airlines22h 32m018:51Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 05/06/2026 18:51:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 19:23:00. 50 Economy ticket for £141 per person are available. Travel duration is 22h 32m
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Frontier Airlines25h 6m016:17Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 05/06/2026 16:17:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 19:23:00. 50 Economy ticket for £141 per person are available. Travel duration is 25h 6m
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Allegiant Air29h 37m009:57Phoenix-Mesa Gateway AirportBus Stop17:34St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 05/06/2026 09:57:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 17:34:00. 50 Economy ticket for £211 per person are available. Travel duration is 29h 37m
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Allegiant Air31h 37m007:57Phoenix-Mesa Gateway AirportBus Stop17:34St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 05/06/2026 07:57:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 17:34:00. 50 Economy ticket for £202 per person are available. Travel duration is 31h 37m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 05/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 07:10:00. 50 Economy ticket for £113 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 05/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 22:45:00. 50 Economy ticket for £106 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m007:20Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 05/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 06/06/2026 22:45:00. 50 Economy ticket for £117 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 05/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 22:45:00. 50 Economy ticket for £120 per person are available. Travel duration is 56h 5m
Fastest Flights Friday
Fastest Buses Friday
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 15:46:00. 50 Economy ticket for £195 per person are available. Travel duration is 6h 56m
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Frontier Airlines12h 8m005:15Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 05:15:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 06/06/2026 19:23:00. 50 Economy ticket for £119 per person are available. Travel duration is 12h 8m
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Frontier Airlines16h 3m023:30Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport17:33St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 23:30:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 17:33:00. 50 Economy ticket for £94 per person are available. Travel duration is 16h 3m
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Allegiant Air32h 28m007:05Phoenix-Mesa Gateway AirportBus Stop17:33St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 06/06/2026 07:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 17:33:00. 50 Economy ticket for £169 per person are available. Travel duration is 32h 28m
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Allegiant Air47h 50m007:05Phoenix-Mesa Gateway AirportBus Stop08:55St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 06/06/2026 07:05:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 08/06/2026 08:55:00. 50 Economy ticket for £169 per person are available. Travel duration is 47h 50m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 06/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 07:10:00. 50 Economy ticket for £124 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 06/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 22:45:00. 50 Economy ticket for £107 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m007:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 07/06/2026 22:45:00. 50 Economy ticket for £122 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 06/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 22:45:00. 50 Economy ticket for £119 per person are available. Travel duration is 56h 5m
Fastest Flights Saturday
Fastest Buses Saturday
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 15:46:00. 50 Economy ticket for £210 per person are available. Travel duration is 6h 56m
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Alaska Airlines7h 37m007:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport16:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 07:00:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 16:37:00. 50 Economy ticket for £239 per person are available. Travel duration is 7h 37m
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Frontier Airlines12h 8m005:15Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 05:15:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 07/06/2026 19:23:00. 50 Economy ticket for £93 per person are available. Travel duration is 12h 8m
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Aeroméxico36h 38m023:59Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport14:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 07/06/2026 23:59:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 14:37:00. 50 Economy ticket for £624 per person are available. Travel duration is 36h 38m
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Allegiant Air46h 15m016:50Phoenix-Mesa Gateway AirportBus Stop17:05St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 07/06/2026 16:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 17:05:00. 50 Economy ticket for £194 per person are available. Travel duration is 46h 15m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 07/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 07:10:00. 50 Economy ticket for £116 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 07/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 22:45:00. 50 Economy ticket for £103 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m007:20Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 07/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 08/06/2026 22:45:00. 50 Economy ticket for £109 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 07/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 22:45:00. 50 Economy ticket for £109 per person are available. Travel duration is 56h 5m
Fastest Flights Sunday
Fastest Buses Sunday
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United Airlines11h 51m010:06Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:57St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 10:06:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 08/06/2026 23:57:00. 50 Economy ticket for £198 per person are available. Travel duration is 11h 51m
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Allegiant Air24h 19m015:11Phoenix-Mesa Gateway AirportBus Stop17:30St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 08/06/2026 15:11:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 17:30:00. 50 Economy ticket for £180 per person are available. Travel duration is 24h 19m
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Alaska Airlines27h 38m018:16Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:54St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 18:16:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 23:54:00. 50 Economy ticket for £226 per person are available. Travel duration is 27h 38m
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Frontier Airlines32h 20m022:27Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport08:47St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 22:27:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 10/06/2026 08:47:00. 50 Economy ticket for £92 per person are available. Travel duration is 32h 20m
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Aeroméxico36h 38m023:59Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport14:37St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 08/06/2026 23:59:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 10/06/2026 14:37:00. 50 Economy ticket for £550 per person are available. Travel duration is 36h 38m
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Greyhound US30h 25m022:45Phoenix, AZCoach Station07:10St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 08/06/2026 22:45:00 to Gateway Station, St. Louis, MO (USA) arriving at 10/06/2026 07:10:00. 50 Economy ticket for £94 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m009:35Phoenix, AZCoach Station22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Coach Station, Phoenix, AZ (USA) at 08/06/2026 09:35:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 22:45:00. 50 Economy ticket for £94 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m007:20Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 08/06/2026 07:20:00 to Gateway Station, St. Louis, MO (USA) arriving at 09/06/2026 22:45:00. 50 Economy ticket for £104 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40Phoenix, AZ44th St/Washington22:45St. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 08/06/2026 12:40:00 to Gateway Station, St. Louis, MO (USA) arriving at 10/06/2026 22:45:00. 50 Economy ticket for £102 per person are available. Travel duration is 56h 5m
Fastest Flights Monday
Fastest Buses Monday
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Frontier Airlines6h 2m011:21Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport19:23St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 11:21:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 19:23:00. 50 Economy ticket for £67 per person are available. Travel duration is 6h 2m
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United Airlines6h 56m006:50Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport15:46St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 06:50:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 15:46:00. 50 Economy ticket for £167 per person are available. Travel duration is 6h 56m
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United Airlines8h 18m011:12Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport21:30St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 11:12:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 21:30:00. 50 Economy ticket for £152 per person are available. Travel duration is 8h 18m
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Alaska Airlines10h 8m011:46Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport23:54St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 11:46:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 09/06/2026 23:54:00. 50 Economy ticket for £195 per person are available. Travel duration is 10h 8m
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Frontier Airlines17h 36m022:32Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport18:08St. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 09/06/2026 22:32:00 to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 10/06/2026 18:08:00. 50 Economy ticket for £71 per person are available. Travel duration is 17h 36m
Fastest Flights Tuesday
Here you will find all operators and timetables for a
Bus from Phoenix, AZ to St. Louis, MO
What are the most popular stations in Phoenix, AZ and St. Louis, MO?
In Phoenix, AZ, you will usually depart from Washington St & 4th Av Coach Stop, 7th St & Roosevelt St Coach Stop or 24th St & Jefferson St Station, while in St. Louis, MO you will be arriving at Gateway Station, Lindbergh @ Hackberry NB Bus Stop or Skinker Boulevard, but there are many more stops to explore in both locations.
How do I decide? Some tips and tricks from our experience
Are you having trouble deciding on how to get to St. Louis, MO from Phoenix, AZ? With 8 connections between 2 Flight and Bus operators, it can be difficult to find the one ride that will make you happy. But we have some tips that can help you make the best informed decision. First of all, the best trip is always the one that meets all your needs, so make a list of all the things that you want from this journey and look for something that will satisfy all of them. Here we will go through some of the factors mostly commonly taken into consideration.
Look for the lowest price
Ticket price is usually the main concern: even if you can afford to pay more, why do it if there are cheaper options? Saving on the trip means that you can spend more on the vacation itself! Between Phoenix, AZ and St. Louis, MO, you can pay as low as £64 with a Flight from Frontier Airlines.Travel duration
Time is also an important factor. An earlier departure may allow you to see a beautiful sunset or relax before an important event. And remember, time is money, so paying more for a shorter trip may be well worth it. For longer distances, flights are without doubt the best options, but be mindful of airport times and possible delays: a high-speed train may end up cheaper and faster! Here the quicker option is definitely the Flight from Frontier Airlines: you will get to St. Louis, MO in just 6h 2m.Comfort makes all the difference
You should always take into account what your personal travelling preferences are. Is one hand luggage enough, or are you trasporting more? Would you like to have a snack during the journey? Can you relax in a busy compartment, or do you need space for yourself? Even among the same mode of transportation, different companies will offer you varying levels of comfort and amenities. The main operators connecting Phoenix, AZ and St. Louis, MO are Greyhound US, Frontier Airlines and Allegiant Air, but be sure to check what they have to offer!Save money with deals, and always compare
One last tip? Even if you live in Phoenix, AZ and St. Louis, MO is your only destination, it may be wise to check the offers from and to nearby cities or, if you are flyng, nearby airports. Check the trips from Phoenix Sky Harbor Airport or to Sauget, IL, and look at flights from Phoenix-Deer Valley Airport, and landing at St. Louis Lambert Airport. Comparing different routes may allow you to find deals or promotions you were not aware of. Consider also signing up to CheckMyBus to see even more exclusive promotions!Which companies offer a trip from Phoenix, AZ to St. Louis, MO?
The most popular companies between Phoenix, AZ and St. Louis, MO, are Greyhound US, Frontier Airlines and Allegiant Air. Be sure to check their seat class offers and the amenities that they provide.
Bus companies: Greyhound US and FlixBus
Airlines: Frontier Airlines, Allegiant Air, United Airlines and 2 more.
All you need to know when you travel from Phoenix, AZ to St. Louis, MO
Check all information on comfort and services on all modes of transports from Phoenix, AZ to St. Louis, MO. See which seat classes are available, and what amenities are other advantages offered by the operators on your journey.
FAQs about the trip from Phoenix, AZ to St. Louis, MO
How can I reach St. Louis, MO from Phoenix, AZ?
Every day, there are on average 8 connections between Flight and Bus, with which you can get to St. Louis, MO from Phoenix, AZ.
How far is St. Louis, MO from Phoenix, AZ?
The distance between Phoenix, AZ and St. Louis, MO is 2,043.3 km.
What is the most ecofriendly mode of transport between Phoenix, AZ and St. Louis, MO?
Trains and buses are by far the greenest options, with trains surpassing buses on longer routes. Planes will always be the worst polluters, especially in shorter flights, were the emissions from the takeoff and landing are less offset by the distance.
On this particular route, a bus will emit, per person, a total of 55 kgs of CO2, a train 72 kgs, a car 347 kgs, and a flight 503 kgs.
What is the cheapest mode of transport from Phoenix, AZ to St. Louis, MO?
You can get to St. Louis, MO with just £64 by taking a Flight from Frontier Airlines.
What is the fastest way to get from Phoenix, AZ to St. Louis, MO?
While a plane is travelling fastest boarding and transfer to airport consumes a lot of time. Usually, high speed trains are better than flights if pure train travel time is below 4 hours. For this particular route, you can get to St. Louis, MO in just 6h 2m with a Flight from Frontier Airlines.
More routes to Phoenix, AZ and to St. Louis, MO
Looking for more options? Here you can see the most popular routes to Phoenix, AZ and to St. Louis, MO. Simply click on a connection, and you’ll find all the details about the route!
