What is the best way to travel from St. Louis, MO to Phoenix, AZ?
Looking for a trip? Check and compare all the available Flights and Buses to Phoenix, AZ from St. Louis, MO. Look at different modes of transportation, search for the cheapest tickets, fastest rides and most popular stations, and see all 1 available companies to find your perfect trip!
What is the cheapest way to reach Phoenix, AZ from St. Louis, MO?
You can reach Phoenix, AZ with just £94 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 Airlines7h 14m017:06St. Louis Lambert AirportSt. Louis Lambert Airport22:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 17:06:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 22:20:00. 50 Economy ticket for £94 per person are available. Travel duration is 7h 14m
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Frontier Airlines6h 1m019:03St. Louis Lambert AirportSt. Louis Lambert Airport23:04Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 19:03:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 23:04:00. 50 Economy ticket for £94 per person are available. Travel duration is 6h 1m
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United Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 09:00:00. 50 Economy ticket for £171 per person are available. Travel duration is 5h 50m
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United Airlines6h 20m006:14St. Louis Lambert AirportSt. Louis Lambert Airport10:34Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 06:14:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 10:34:00. 50 Economy ticket for £171 per person are available. Travel duration is 6h 20m
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Allegiant Air27h 43m021:24MidAmerica St. Louis AirportMidAmerica St. Louis Airport23:07Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 26/06/2026 21:24:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 27/06/2026 23:07:00. 50 Economy ticket for £171 per person are available. Travel duration is 27h 43m
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Frontier Airlines23h 22m017:06St. Louis Lambert AirportSt. Louis Lambert Airport14:28Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 17:06:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 27/06/2026 14:28:00. 50 Economy ticket for £181 per person are available. Travel duration is 23h 22m
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 27/06/2026 06:10:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 50m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 27/06/2026 12:40:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 0m
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Greyhound US39h 40m016:30St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 16:30:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 06:10:00. 50 Economy ticket for £99 per person are available. Travel duration is 39h 40m
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Greyhound US38h 55m023:45St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 23:45:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 12:40:00. 50 Economy ticket for £100 per person are available. Travel duration is 38h 55m
Cheapest Flights Friday
Cheapest Buses Friday
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Frontier Airlines7h 14m017:06St. Louis Lambert AirportSt. Louis Lambert Airport22:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 17:06:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 22:20:00. 50 Economy ticket for £95 per person are available. Travel duration is 7h 14m
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Frontier Airlines5h 45m019:19St. Louis Lambert AirportSt. Louis Lambert Airport23:04Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 19:19:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 23:04:00. 50 Economy ticket for £95 per person are available. Travel duration is 5h 45m
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Allegiant Air51h 15m020:20MidAmerica St. Louis AirportMidAmerica St. Louis Airport21:35Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 27/06/2026 20:20:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 29/06/2026 21:35:00. 50 Economy ticket for £174 per person are available. Travel duration is 51h 15m
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Allegiant Air28h 20m013:23MidAmerica St. Louis AirportMidAmerica St. Louis Airport15:43Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 27/06/2026 13:23:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 28/06/2026 15:43:00. 50 Economy ticket for £184 per person are available. Travel duration is 28h 20m
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United Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 09:00:00. 50 Economy ticket for £189 per person are available. Travel duration is 5h 50m
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United Airlines7h 3m006:00St. Louis Lambert AirportSt. Louis Lambert Airport11:03Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 06:00:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 11:03:00. 50 Economy ticket for £189 per person are available. Travel duration is 7h 3m
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 06:10:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 50m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 12:40:00. 50 Economy ticket for £100 per person are available. Travel duration is 30h 0m
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Greyhound US38h 55m023:45St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 23:45:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 12:40:00. 50 Economy ticket for £109 per person are available. Travel duration is 38h 55m
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Greyhound US39h 40m016:30St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 16:30:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 06:10:00. 50 Economy ticket for £110 per person are available. Travel duration is 39h 40m
Cheapest Flights Saturday
Cheapest Buses Saturday
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 06:10:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 50m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 12:40:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 0m
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Greyhound US39h 40m016:30St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 16:30:00 to Coach Station, Phoenix, AZ (USA) arriving at 30/06/2026 06:10:00. 50 Economy ticket for £101 per person are available. Travel duration is 39h 40m
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Greyhound US38h 55m023:45St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 23:45:00 to Coach Station, Phoenix, AZ (USA) arriving at 30/06/2026 12:40:00. 50 Economy ticket for £101 per person are available. Travel duration is 38h 55m
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Frontier Airlines6h 1m019:03St. Louis Lambert AirportSt. Louis Lambert Airport23:04Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 19:03:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 28/06/2026 23:04:00. 50 Economy ticket for £114 per person are available. Travel duration is 6h 1m
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Allegiant Air15h 43m021:41MidAmerica St. Louis AirportMidAmerica St. Louis Airport11:24Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 28/06/2026 21:41:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 29/06/2026 11:24:00. 50 Economy ticket for £145 per person are available. Travel duration is 15h 43m
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United Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 28/06/2026 09:00:00. 50 Economy ticket for £189 per person are available. Travel duration is 5h 50m
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Frontier Airlines20h 11m014:56St. Louis Lambert AirportSt. Louis Lambert Airport09:07Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 14:56:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 29/06/2026 09:07:00. 50 Economy ticket for £221 per person are available. Travel duration is 20h 11m
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Frontier Airlines18h 11m014:56St. Louis Lambert AirportSt. Louis Lambert Airport07:07Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 14:56:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 29/06/2026 07:07:00. 50 Economy ticket for £221 per person are available. Travel duration is 18h 11m
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Alaska Airlines18h 12m017:37St. Louis Lambert AirportSt. Louis Lambert Airport09:49Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 17:37:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 29/06/2026 09:49:00. 50 Economy ticket for £281 per person are available. Travel duration is 18h 12m
Cheapest Buses Sunday
Cheapest Flights Sunday
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Frontier Airlines7h 14m017:06St. Louis Lambert AirportSt. Louis Lambert Airport22:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 17:06:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 01/07/2026 22:20:00. 50 Economy ticket for £99 per person are available. Travel duration is 7h 14m
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United Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 01/07/2026 09:00:00. 50 Economy ticket for £146 per person are available. Travel duration is 5h 50m
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Alaska Airlines19h 5m019:56St. Louis Lambert AirportSt. Louis Lambert Airport13:01Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 19:56:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 02/07/2026 13:01:00. 50 Economy ticket for £202 per person are available. Travel duration is 19h 5m
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Frontier Airlines25h 21m020:08St. Louis Lambert AirportSt. Louis Lambert Airport19:29Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 20:08:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 02/07/2026 19:29:00. 50 Economy ticket for £203 per person are available. Travel duration is 25h 21m
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Allegiant Air27h 10m010:14MidAmerica St. Louis AirportMidAmerica St. Louis Airport11:24Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 01/07/2026 10:14:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 02/07/2026 11:24:00. 50 Economy ticket for £236 per person are available. Travel duration is 27h 10m
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Frontier Airlines21h 19m019:46St. Louis Lambert AirportSt. Louis Lambert Airport15:05Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 19:46:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 02/07/2026 15:05:00. 50 Economy ticket for £259 per person are available. Travel duration is 21h 19m
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 01/07/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 02/07/2026 06:10:00. 50 Economy ticket for £103 per person are available. Travel duration is 30h 50m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 01/07/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 02/07/2026 12:40:00. 50 Economy ticket for £103 per person are available. Travel duration is 30h 0m
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Greyhound US29h 30m009:10St. Louis Lambert AirportSt. Louis Lambert Airport12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 09:10:00 to Coach Station, Phoenix, AZ (USA) arriving at 02/07/2026 12:40:00. 50 Economy ticket for £106 per person are available. Travel duration is 29h 30m
Cheapest Flights Wednesday
Cheapest Buses Wednesday
What are the fastest trips from St. Louis, MO to Phoenix, AZ?
You can get to Phoenix, AZ from St. Louis, MO in just 5h 45m 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 Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 09:00:00. 50 Economy ticket for £171 per person are available. Travel duration is 5h 50m
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Frontier Airlines6h 1m019:03St. Louis Lambert AirportSt. Louis Lambert Airport23:04Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 19:03:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 23:04:00. 50 Economy ticket for £94 per person are available. Travel duration is 6h 1m
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United Airlines6h 20m006:14St. Louis Lambert AirportSt. Louis Lambert Airport10:34Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 06:14:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 10:34:00. 50 Economy ticket for £171 per person are available. Travel duration is 6h 20m
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Frontier Airlines7h 14m017:06St. Louis Lambert AirportSt. Louis Lambert Airport22:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 17:06:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 26/06/2026 22:20:00. 50 Economy ticket for £94 per person are available. Travel duration is 7h 14m
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Allegiant Air16h 52m008:37MidAmerica St. Louis AirportMidAmerica St. Louis Airport23:29Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 26/06/2026 08:37:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 26/06/2026 23:29:00. 50 Economy ticket for £260 per person are available. Travel duration is 16h 52m
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Alaska Airlines18h 12m017:37St. Louis Lambert AirportSt. Louis Lambert Airport09:49Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 26/06/2026 17:37:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 09:49:00. 50 Economy ticket for £244 per person are available. Travel duration is 18h 12m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 27/06/2026 12:40:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 0m
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 27/06/2026 06:10:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 50m
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Greyhound US38h 55m023:45St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 23:45:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 12:40:00. 50 Economy ticket for £100 per person are available. Travel duration is 38h 55m
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Greyhound US39h 40m016:30St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 26/06/2026 16:30:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 06:10:00. 50 Economy ticket for £99 per person are available. Travel duration is 39h 40m
Fastest Flights Friday
Fastest Buses Friday
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Frontier Airlines5h 45m019:19St. Louis Lambert AirportSt. Louis Lambert Airport23:04Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 19:19:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 23:04:00. 50 Economy ticket for £95 per person are available. Travel duration is 5h 45m
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United Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 09:00:00. 50 Economy ticket for £189 per person are available. Travel duration is 5h 50m
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United Airlines7h 3m006:00St. Louis Lambert AirportSt. Louis Lambert Airport11:03Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 06:00:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 11:03:00. 50 Economy ticket for £189 per person are available. Travel duration is 7h 3m
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Frontier Airlines7h 14m017:06St. Louis Lambert AirportSt. Louis Lambert Airport22:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 17:06:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 27/06/2026 22:20:00. 50 Economy ticket for £95 per person are available. Travel duration is 7h 14m
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Alaska Airlines18h 12m017:37St. Louis Lambert AirportSt. Louis Lambert Airport09:49Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 17:37:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 28/06/2026 09:49:00. 50 Economy ticket for £247 per person are available. Travel duration is 18h 12m
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Frontier Airlines20h 39m019:38St. Louis Lambert AirportSt. Louis Lambert Airport14:17Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 27/06/2026 19:38:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 28/06/2026 14:17:00. 50 Economy ticket for £248 per person are available. Travel duration is 20h 39m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 12:40:00. 50 Economy ticket for £100 per person are available. Travel duration is 30h 0m
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 28/06/2026 06:10:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 50m
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Greyhound US38h 55m023:45St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 23:45:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 12:40:00. 50 Economy ticket for £109 per person are available. Travel duration is 38h 55m
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Greyhound US39h 40m016:30St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 27/06/2026 16:30:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 06:10:00. 50 Economy ticket for £110 per person are available. Travel duration is 39h 40m
Fastest Flights Saturday
Fastest Buses Saturday
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United Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 28/06/2026 09:00:00. 50 Economy ticket for £189 per person are available. Travel duration is 5h 50m
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Frontier Airlines6h 1m019:03St. Louis Lambert AirportSt. Louis Lambert Airport23:04Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 19:03:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 28/06/2026 23:04:00. 50 Economy ticket for £114 per person are available. Travel duration is 6h 1m
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American Airlines13h 16m005:29St. Louis Lambert AirportSt. Louis Lambert Airport16:45Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from American Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 05:29:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 28/06/2026 16:45:00. 50 Economy ticket for £494 per person are available. Travel duration is 13h 16m
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Allegiant Air15h 43m021:41MidAmerica St. Louis AirportMidAmerica St. Louis Airport11:24Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 28/06/2026 21:41:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 29/06/2026 11:24:00. 50 Economy ticket for £145 per person are available. Travel duration is 15h 43m
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Frontier Airlines18h 11m014:56St. Louis Lambert AirportSt. Louis Lambert Airport07:07Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 14:56:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 29/06/2026 07:07:00. 50 Economy ticket for £221 per person are available. Travel duration is 18h 11m
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Alaska Airlines18h 12m017:37St. Louis Lambert AirportSt. Louis Lambert Airport09:49Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 28/06/2026 17:37:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 29/06/2026 09:49:00. 50 Economy ticket for £281 per person are available. Travel duration is 18h 12m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 12:40:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 0m
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 29/06/2026 06:10:00. 50 Economy ticket for £97 per person are available. Travel duration is 30h 50m
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Greyhound US38h 55m023:45St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 23:45:00 to Coach Station, Phoenix, AZ (USA) arriving at 30/06/2026 12:40:00. 50 Economy ticket for £101 per person are available. Travel duration is 38h 55m
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Greyhound US39h 40m016:30St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 28/06/2026 16:30:00 to Coach Station, Phoenix, AZ (USA) arriving at 30/06/2026 06:10:00. 50 Economy ticket for £101 per person are available. Travel duration is 39h 40m
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United Airlines5h 50m005:10St. Louis Lambert AirportSt. Louis Lambert Airport09:00Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 05:10:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 01/07/2026 09:00:00. 50 Economy ticket for £146 per person are available. Travel duration is 5h 50m
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Frontier Airlines7h 14m017:06St. Louis Lambert AirportSt. Louis Lambert Airport22:20Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 17:06:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 01/07/2026 22:20:00. 50 Economy ticket for £99 per person are available. Travel duration is 7h 14m
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American Airlines13h 16m005:29St. Louis Lambert AirportSt. Louis Lambert Airport16:45Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from American Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 05:29:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 01/07/2026 16:45:00. 50 Economy ticket for £453 per person are available. Travel duration is 13h 16m
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Alaska Airlines19h 5m019:56St. Louis Lambert AirportSt. Louis Lambert Airport13:01Phoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 19:56:00 to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 02/07/2026 13:01:00. 50 Economy ticket for £202 per person are available. Travel duration is 19h 5m
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Frontier Airlines21h 19m019:46St. Louis Lambert AirportSt. Louis Lambert Airport15:05Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 19:46:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 02/07/2026 15:05:00. 50 Economy ticket for £259 per person are available. Travel duration is 21h 19m
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Allegiant Air24h 32m010:14MidAmerica St. Louis AirportMidAmerica St. Louis Airport08:46Phoenix-Mesa Gateway AirportBus Stop0EconomyA Flight from Allegiant Air goes from MidAmerica St. Louis Airport, MidAmerica St. Louis Airport (USA) at 01/07/2026 10:14:00 to Bus Stop, Phoenix-Mesa Gateway Airport (USA) arriving at 02/07/2026 08:46:00. 50 Economy ticket for £300 per person are available. Travel duration is 24h 32m
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Greyhound US29h 30m009:10St. Louis Lambert AirportSt. Louis Lambert Airport12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 01/07/2026 09:10:00 to Coach Station, Phoenix, AZ (USA) arriving at 02/07/2026 12:40:00. 50 Economy ticket for £106 per person are available. Travel duration is 29h 30m
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Greyhound US30h 0m008:40St. Louis, MOGateway Station12:40Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 01/07/2026 08:40:00 to Coach Station, Phoenix, AZ (USA) arriving at 02/07/2026 12:40:00. 50 Economy ticket for £103 per person are available. Travel duration is 30h 0m
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Greyhound US30h 50m001:20St. Louis, MOGateway Station06:10Phoenix, AZCoach Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 01/07/2026 01:20:00 to Coach Station, Phoenix, AZ (USA) arriving at 02/07/2026 06:10:00. 50 Economy ticket for £103 per person are available. Travel duration is 30h 50m
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Here you will find all operators and timetables for a
Bus from St. Louis, MO to Phoenix, AZ
What are the most popular stations in St. Louis, MO and Phoenix, AZ?
In St. Louis, MO, you will usually depart from Gateway Station, Lindbergh @ Hackberry NB Bus Stop or Skinker Boulevard, while in Phoenix, AZ you will be arriving at Washington St & 4th Av Coach Stop, 7th St & Roosevelt St Coach Stop or 24th St & Jefferson St Station, 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 Phoenix, AZ from St. Louis, MO? With 14 connections between 1 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 St. Louis, MO and Phoenix, AZ, you can pay as low as £94 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 Phoenix, AZ in just 5h 45m.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 St. Louis, MO and Phoenix, AZ 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 St. Louis, MO and Phoenix, AZ 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 Sauget, IL or to Phoenix Sky Harbor Airport, and look at flights from St. Louis Lambert Airport, and landing at Phoenix-Deer Valley 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 St. Louis, MO to Phoenix, AZ?
The most popular companies between St. Louis, MO and Phoenix, AZ, 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
Airlines: Frontier Airlines, Allegiant Air, United Airlines and 2 more.
All you need to know when you travel from St. Louis, MO to Phoenix, AZ
Check all information on comfort and services on all modes of transports from St. Louis, MO to Phoenix, AZ. See which seat classes are available, and what amenities are other advantages offered by the operators on your journey.
FAQs about the trip from St. Louis, MO to Phoenix, AZ
How can I reach Phoenix, AZ from St. Louis, MO?
Every day, there are on average 14 connections between Flight and Bus, with which you can get to Phoenix, AZ from St. Louis, MO.
How far is Phoenix, AZ from St. Louis, MO?
The distance between St. Louis, MO and Phoenix, AZ is 2,043.3 km.
What is the most ecofriendly mode of transport between St. Louis, MO and Phoenix, AZ?
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 St. Louis, MO to Phoenix, AZ?
You can get to Phoenix, AZ with just £94 by taking a Flight from Frontier Airlines.
What is the fastest way to get from St. Louis, MO to Phoenix, AZ?
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 Phoenix, AZ in just 5h 45m with a Flight from Frontier Airlines.
More routes to St. Louis, MO and to Phoenix, AZ
Looking for more options? Here you can see the most popular routes to St. Louis, MO and to Phoenix, AZ. Simply click on a connection, and you’ll find all the details about the route!
- Trips to St. Louis, MO
- Atlanta, GA to St. Louis, MO
- Dallas to St. Louis, MO
- Houston to St. Louis, MO
- Mexico City to St. Louis, MO
- Monterrey, NL to St. Louis, MO
- New York to St. Louis, MO
- Trips to Phoenix, AZ
- Aguascalientes to Phoenix, AZ
- Albuquerque, NM to Phoenix, AZ
- Bakersfield, CA to Phoenix, AZ
- Calexico, CA to Phoenix, AZ
- Chihuahua to Phoenix, AZ
- Ciudad Juárez to Phoenix, AZ
- Ciudad Obregón to Phoenix, AZ
- Colorado Springs to Phoenix, AZ
- Culiacán Rosales to Phoenix, AZ
- Durango, DG to Phoenix, AZ
- El Paso, TX to Phoenix, AZ
- Guadalajara, JC to Phoenix, AZ
- Hermosillo to Phoenix, AZ
- Indianapolis to Phoenix, AZ
- Las Vegas to Phoenix, AZ
- Los Angeles to Phoenix, AZ
- Los Mochis to Phoenix, AZ
- Mexico City to Phoenix, AZ
- Salt Lake City, UT to Phoenix, AZ
- Saltillo to Phoenix, AZ
- San Diego to Phoenix, AZ
- San Jose, CA to Phoenix, AZ
- Tepic to Phoenix, AZ
- Tijuana, BC to Phoenix, AZ
