St. Louis Lambert International Airport
St. Louis, United StatesSTL / KSTL
Major airport · 88 direct destinations · 4 runways · longest runway 11,020 ft
57 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Route
St. Louis → Phoenix
STL
St. LouisSt. Louis Lambert International Airport
St. LouisSt. Louis Lambert International AirportPHXPhoenixPhoenix Sky Harbor International Airport
PhoenixPhoenix Sky Harbor International Airport- Distance
- 1,259 mi
- Estimated flight time
- ~3h
Phoenix is currently 2 hours behind St. Louis.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 6 flights a day, observed from October 2025 to September 2026.
- 6
- flights per day
- 7
- busiest month · Feb
- 5
- quietest month · Jun
- 2 hr 58 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 6Jan2026
- 7Feb
- 7Mar
- 6Apr
- 6May
- 5Jun
- 6Jul
- 5Aug
- 5Sep
- 6Oct2025
- 6Nov
- 6Dec
Airlines
Who flies it
Southwest Airlinesall year
American Airlinesall year
Frontier Airlineswinter
Envoy Airnow and then
SkyWest Airlinesnow and then
Arizona Express Airlinesnow and then
Through the day
Departure times
Local time in St. Louis. Most departures between 06:00 and 09:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 6Mon
- 5.8Tue
- 5.7Wed
- 5.8Thu
- 6.9Fri
- 5.5Sat
- 5.7Sun
Fleet
Aircraft observed
- Boeing 737 MAX 8B38M32%
- Boeing 737-800B73831%
- Boeing 737-700B73713%
- Airbus A320A3209%
- Airbus A319A3198%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 6 | 186 |
|
| February 2026 | 7 | 187 |
|
| March 2026 | 7 | 216 |
|
| April 2026 | 6 | 184 |
|
| May 2026 | 6 | 172 |
|
| June 2026 | 5 | 150 |
|
| July 2026 | 6 | 183 |
|
| August 2026 | 5 | 145 |
|
| September 2026 | 5 | 164 |
|
| October 2025 | 6 | 185 |
|
| November 2025 | 6 | 181 |
|
| December 2025 | 6 | 173 |
|
Airlines observed on this route
From observed callsign routes on STL-PHX - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from St. Louis: 88.
- Direct destinations observed from Phoenix: 145.
The airports on this route
Phoenix Sky Harbor International Airport
Phoenix, United StatesPHX / KPHX
International hub · 145 direct destinations · 3 runways · longest runway 11,490 ft
82 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from St. Louis to Phoenix
The observed direct connection between St. Louis Lambert International Airport (STL) and Phoenix Sky Harbor International Airport (PHX) covers approximately 1,259 mi. The estimated flight time is around 3h. American Airlines, Arizona Express Airlines, Envoy Air, Frontier Airlines, SkyWest Airlines and Southwest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is St. Louis from Phoenix by air?
- The great-circle distance between St. Louis Lambert International Airport and Phoenix Sky Harbor International Airport is approximately 1,259 mi.
- How long is the flight from St. Louis to Phoenix?
- Based on the distance, the estimated flight time is about 3h. This is an estimate, not a schedule.
- Is there a direct connection from St. Louis to Phoenix?
- Yes, a direct connection between STL and PHX has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: American Airlines, Arizona Express Airlines, Envoy Air, Frontier Airlines, SkyWest Airlines and Southwest Airlines.
- How often is there a flight from St. Louis to Phoenix?
- On average around 6 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,126 observed flights. Mainly Southwest Airlines, American Airlines, Frontier Airlines. That is an observation, not a timetable.
- What is the current time difference between St. Louis and Phoenix?
- Phoenix is currently 2 hours behind St. Louis.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.