Phoenix, AZ to St. Louis, MO flights

Flights starting at $45. Choose between Frontier Airlines, American Airlines, or United Airlines to find the best price.

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Phoenix PHXDenver DENPhoenix PHX
$131
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Phoenix PHXDenver DENPhoenix PHX
$174
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Travelers usually depart from Phoenix Sky Harbor International, Phoenix–Mesa Gateway, Phoenix, AZ - Tufesa, Phoenix, AZ Greyhound Bus stop, or Phoenix, AZ - Deer Valley when they travel from Phoenix to St. Louis. Book your trip to arrive at St. Louis Lambert International, or St. Louis Union Station. The distance between Phoenix and St. Louis is 2029 km. The most popular airlines for this route are Frontier Airlines, American Airlines, United Airlines, Spirit Airlines, and Southern Airways Express. Phoenix and St. Louis have 401 direct flights per week.

Weekly direct flights

Discover the top airlines offering direct flights from Phoenix to St. Louis in the next month. You’ll find the number of daily direct flights per airline in the table.

Weekly direct flights for Sun 24.09 - Sat 30.09

AirlineSun 24.09Mon 25.09Tue 26.09Wed 27.09Thu 28.09Fri 29.09Sat 30.09
3322321

Weekly direct flights for Sun 01.10 - Sat 07.10

AirlineSun 01.10Mon 02.10Tue 03.10Wed 04.10Thu 05.10Fri 06.10Sat 07.10
3222222

Weekly direct flights for Sun 08.10 - Sat 14.10

AirlineSun 08.10Mon 09.10Tue 10.10Wed 11.10Thu 12.10Fri 13.10Sat 14.10
2233232

Weekly direct flights for Sun 15.10 - Sat 21.10

AirlineSun 15.10Mon 16.10Tue 17.10Wed 18.10Thu 19.10Fri 20.10Sat 21.10
2222222

Check-in for a flight from Phoenix to St. Louis

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
American AirlinesAALAANoNo
United AirlinesUALUAYesNo
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Southern Airways ExpressFDY9XYesNo
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Frequently asked questions

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