Cheap flights from Phoenix, AZ to St. Louis, MO
Flights starting at $44. Choose between Frontier Airlines, United Airlines, or Spirit Airlines to find the best price.
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Cheapest one-way trip | $44 |
|---|---|
Cheapest round-trip | $141 |
Average round-trip | $194 |
Includes rare itinerary | |
Most popular airline | Frontier Airlines |
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Travelers usually depart from Phoenix Sky Harbor International, or Phoenix–Mesa Gateway when they travel from Phoenix to St. Louis. The most popular airlines for this route are Frontier Airlines, United Airlines, Spirit Airlines, Alaska Airlines, and Southern Airways Express. Phoenix and St. Louis have 163 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 07.04 - Sat 13.04
| Airline | Sun 07.04 | Mon 08.04 | Tue 09.04 | Wed 10.04 | Thu 11.04 | Fri 12.04 | Sat 13.04 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | 1 | --- | 1 | 1 |
Weekly direct flights for Sun 14.04 - Sat 20.04
| Airline | Sun 14.04 | Mon 15.04 | Tue 16.04 | Wed 17.04 | Thu 18.04 | Fri 19.04 | Sat 20.04 |
|---|---|---|---|---|---|---|---|
| --- | 1 | --- | 1 | --- | 1 | 1 |
Weekly direct flights for Sun 21.04 - Sat 27.04
| Airline | Sun 21.04 | Mon 22.04 | Tue 23.04 | Wed 24.04 | Thu 25.04 | Fri 26.04 | Sat 27.04 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | --- | --- | 1 | 1 |
Weekly direct flights for Sun 28.04 - Sat 04.05
| Airline | Sun 28.04 | Mon 29.04 | Tue 30.04 | Wed 01.05 | Thu 02.05 | Fri 03.05 | Sat 04.05 |
|---|---|---|---|---|---|---|---|
| --- | 1 | --- | 1 | --- | 1 | 1 |
Check-in for a flight from Phoenix to St. Louis
| Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
|---|---|---|---|---|
| Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
| United Airlines | UAL | UA | Yes | No |
| Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
| Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
| Southern Airways Express | FDY | 9X | Yes | No |
Weather in St. Louis
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 3°C | -3°C |
| February | 6°C | -2°C |
| March | 13°C | 3°C |
| April | 18°C | 8°C |
| May | 24°C | 14°C |
| June | 29°C | 19°C |
| July | 31°C | 21°C |
| August | 30°C | 20°C |
| September | 27°C | 16°C |
| October | 20°C | 10°C |
| November | 12°C | 3°C |
| December | 7°C | 0°C |
14 day forecast
Frequently asked questions
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Airports near Phoenix
- Phoenix Sky Harbor International
- Phoenix–Mesa Gateway
- Tucson International
- Show Low Regional
- Flagstaff Pulliam
- Ernest A. Love Field