Phoenix Sky Harbor International Airport
Phoenix, United StatesPHX / KPHX
International hub · 145 direct destinations · 3 runways · longest runway 11,490 ft
85 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Phoenix → St. Louis
PHX
PhoenixPhoenix Sky Harbor International Airport
PhoenixPhoenix Sky Harbor International AirportSTLSt. LouisSt. Louis Lambert International Airport
St. LouisSt. Louis Lambert International Airport- Distance
- 1,259 mi
- Estimated flight time
- ~3h
St. Louis is currently 2 hours ahead of Phoenix.
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 28 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 6Jan2026
- 7Feb
- 7Mar
- 6.5Apr
- 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
United Airlinesnow and then
Through the day
Departure times
Local time in Phoenix. Most departures between 08:00 and 11:00.
- 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
- 6.3Mon
- 5.7Tue
- 6Wed
- 5.6Thu
- 6.8Fri
- 5.5Sat
- 5.8Sun
Fleet
Aircraft observed
- Boeing 737 MAX 8B38M36%
- Boeing 737-800B73830%
- Boeing 737-700B73710%
- Airbus A320A3209%
- Airbus A319A3198%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 6 | 187 |
|
| February 2026 | 7 | 187 |
|
| March 2026 | 7 | 220 |
|
| April 2026 | 6.5 | 191 |
|
| May 2026 | 6 | 171 |
|
| June 2026 | 5 | 155 |
|
| July 2026 | 6 | 185 |
|
| August 2026 | 5 | 161 |
|
| September 2026 | 5 | 160 |
|
| October 2025 | 6 | 183 |
|
| November 2025 | 6 | 174 |
|
| December 2025 | 6 | 176 |
|
Airlines observed on this route
From observed callsign routes on PHX-STL - 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 Phoenix: 145.
- Direct destinations observed from St. Louis: 88.
The airports on this route
St. Louis Lambert International Airport
St. Louis, United StatesSTL / KSTL
Major airport · 88 direct destinations · 4 runways · longest runway 11,020 ft
54 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
About the route from Phoenix to St. Louis
The observed direct connection between Phoenix Sky Harbor International Airport (PHX) and St. Louis Lambert International Airport (STL) covers approximately 1,259 mi. The estimated flight time is around 3h. American Airlines, Envoy Air, Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Phoenix from St. Louis by air?
- The great-circle distance between Phoenix Sky Harbor International Airport and St. Louis Lambert International Airport is approximately 1,259 mi.
- How long is the flight from Phoenix to St. Louis?
- Based on the distance, the estimated flight time is about 3h. This is an estimate, not a schedule.
- Is there a direct connection from Phoenix to St. Louis?
- Yes, a direct connection between PHX and STL has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: American Airlines, Envoy Air, Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines.
- How often is there a flight from Phoenix to St. Louis?
- On average around 6 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,150 observed flights. Mainly Southwest Airlines, American Airlines, Frontier Airlines. That is an observation, not a timetable.
- What is the current time difference between Phoenix and St. Louis?
- St. Louis is currently 2 hours ahead of Phoenix.
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.