Cheap flights from St. Louis to Phoenix from £66
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Search by stops
- Nonstop
- Up to 1 stop
- Up to 2 stops
Search by carrier
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Search by departure date
How much do flights to Phoenix cost?
Cheapest one-way trip | £66 |
|---|---|
Cheapest round-trip | £184 |
Average round-trip | £320 |
Includes rare itinerary | |
Most popular airline | Frontier Airlines |
Getting from Phoenix airport to the city center
Fastest options: Valley Metro Rail and ride-hailing services. Best value: Valley Metro bus and light rail.
Transport Option | Typical Time | Typical Cost | Frequency | Best For |
|---|---|---|---|---|
15-25 min | $2; single ride fare | every 12–20 min (traffic dependent) | budget travelers to downtown | |
25-45 min | $2; single ride fare | every 15–30 min (traffic dependent) | connections beyond rail | |
10-20 min | $15 – $25; metered; varies by destination | on-demand 24/7 (traffic dependent) | door-to-door convenience | |
10-20 min | $12 – $30; varies with demand and time | on-demand 24/7 (traffic dependent) | flexible pickup locations | |
10-25 min | $30 – $60; pre-booked; varies by provider | by reservation (traffic dependent) | groups and guaranteed pickup | |
10-20 min | $35 – $80; per day; varies by vehicle | 24/7 availability (traffic dependent) | exploring greater Phoenix |
Notes:
- Prices in USD; table created in 2025 and subject to change.
- The free PHX Sky Train connects all terminals to the 44th Street/Washington light rail station.
- Valley Metro Rail operates from approximately 5:00 AM to 11:00 PM; check schedules for weekend service.
- Taxi and ride-hailing pickup areas are located outside baggage claim at each terminal.
- We recommend checking official transport websites for your travel planning.
Updated: December 2025
Key info about flying to Phoenix
Check-in for a flight from St. Louis to Phoenix
| Name | Carrier code | IATA Code | Passport needed during booking |
|---|---|---|---|
| Frontier Airlines | FFT | F9 | No |
| Allegiant Air | AAY | G4 | No |
| United Airlines | UAL | UA | No |
| BREEZE | MX | No | |
| Alaska Airlines | ASA | AS | No |
Online check-in is not available for these airlines.
Weather in Phoenix
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 19°C | 7°C |
| February | 21°C | 9°C |
| March | 25°C | 12°C |
| April | 29°C | 16°C |
| May | 34°C | 20°C |
| June | 40°C | 26°C |
| July | 40°C | 29°C |
| August | 40°C | 29°C |
| September | 37°C | 26°C |
| October | 32°C | 19°C |
| November | 25°C | 12°C |
| December | 19°C | 8°C |
14 day forecast
Frequently asked questions
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