Philadelphia International Airport
Philadelphia, United StatesPHL / KPHL
Major airport · 139 direct destinations · 4 runways · longest runway 12,001 ft
76 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Philadelphia → St. Louis
PHL
PhiladelphiaPhiladelphia International Airport
PhiladelphiaPhiladelphia International AirportSTLSt. LouisSt. Louis Lambert International Airport
St. LouisSt. Louis Lambert International Airport- Distance
- 812 mi
- Estimated flight time
- ~2h 10m
St. Louis is currently 1 hour behind Philadelphia.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 4 flights a day, observed from October 2025 to September 2026.
- 4
- flights per day
- 5
- busiest month · Nov
- 3
- quietest month · Jan
- 2 hr 1 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 3Jan2026
- 3Feb
- 3Mar
- 4Apr
- 4May
- 5Jun
- 4Jul
- 4Aug
- 4Sep
- 4Oct2025
- 5Nov
- 4Dec
Airlines
Who flies it
Southwest Airlinesall year
American Airlinesall year
PSA Airlinesall year
Republic Airwayswinter
Red Barn Operationsnow and then
Through the day
Departure times
Local time in Philadelphia. 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
- 3.8Mon
- 3.7Tue
- 3.9Wed
- 3.6Thu
- 3.9Fri
- 3.3Sat
- 3.8Sun
Fleet
Aircraft observed
- Airbus A319A31937%
- Boeing 737 MAX 8B38M17%
- Boeing 737-800B73814%
- Boeing 737-700B73712%
- Embraer 175E75L6%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 3 | 85 |
|
| February 2026 | 3 | 75 |
|
| March 2026 | 3 | 78 |
|
| April 2026 | 4 | 98 |
|
| May 2026 | 4 | 114 |
|
| June 2026 | 5 | 136 |
|
| July 2026 | 4 | 132 |
|
| August 2026 | 4 | 130 |
|
| September 2026 | 4 | 119 |
|
| October 2025 | 4 | 116 |
|
| November 2025 | 5 | 147 |
|
| December 2025 | 4 | 111 |
|
Airlines observed on this route
From observed callsign routes on PHL-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 Philadelphia: 139.
- 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
53 °F · CloudySource: 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 Philadelphia to St. Louis
The observed direct connection between Philadelphia International Airport (PHL) and St. Louis Lambert International Airport (STL) covers approximately 812 mi. The estimated flight time is around 2h 10m. American Airlines, PSA Airlines, Red Barn Operations, Republic Airways and Southwest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Philadelphia from St. Louis by air?
- The great-circle distance between Philadelphia International Airport and St. Louis Lambert International Airport is approximately 812 mi.
- How long is the flight from Philadelphia to St. Louis?
- Based on the distance, the estimated flight time is about 2h 10m. This is an estimate, not a schedule.
- Is there a direct connection from Philadelphia to St. Louis?
- Yes, a direct connection between PHL and STL has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: American Airlines, PSA Airlines, Red Barn Operations, Republic Airways and Southwest Airlines.
- How often is there a flight from Philadelphia to St. Louis?
- On average around 4 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,341 observed flights. Mainly Southwest Airlines, American Airlines, PSA Airlines. That is an observation, not a timetable.
- What is the current time difference between Philadelphia and St. Louis?
- St. Louis is currently 1 hour behind Philadelphia.
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.