Philadelphia (PHL) to St Louis (STL) flights
American Airlines, Southwest Airlines, PSA Airlines fly nonstop from Philadelphia International Airport to St. Louis Lambert International Airport, with about 32 flights a week in July 2026. The 814-mile flight takes about 2h 26m gate to gate.
- Distance
- 814 mi · 1,310 km
- Flight time
- 2h 26m
- Airlines
- 3
- Seats filled
- 77%
Airlines flying PHL to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| American Airlines | 19 | Airbus A319, Airbus A321, Airbus A320-100/200 | 64,156 | 2h 28m |
| Southwest Airlines | 13 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 93,222 | 2h 21m |
| PSA Airlines | <1 | Bombardier CRJ900, Bombardier CRJ700 | 7,296 | 2h 35m |
| Republic AirlineSeasonal or ended | n/a | Embraer E175 | 5,648 | 2h 43m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
PHL to STL flight schedule
10 flight numbers flew this route in August 2026, 3 of them almost daily. The first usually leaves at 6:20am and the last at 10:01pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 3665Southwest Airlines | 6:20am | 7:35am | 16 | 94% |
| WN 1646Southwest Airlines | 6:25am | 7:40am | 8 | n/a |
| AA 5054American Airlines · operated by PSA Airlines | 9:18am | 10:52am | 23 | 67% |
| WN 2591Southwest Airlines | 11:55am | 1:15pm | 4 | n/a |
| WN 1761Southwest Airlines | 2:45pm | 4:05pm | 12 | 50% |
| AA 2714American Airlines | 3:24pm | 5:02pm | 4 | 68% |
| AA 3049American Airlines | 3:28pm | 5:01pm | 26 | 65% |
| WN 2508Southwest Airlines | 6:35pm | 8:00pm | 12 | 40% |
| AA 1368American Airlines | 9:59pm | 11:32pm | 4 | 76% |
| AA 798American Airlines | 10:01pm | 11:34pm | 27 | 64% |
Is PHL to STL on time?
From September 2025 to August 2026, 78% of 1,610 flights arrived within 15 minutes of schedule and 2.1% were cancelled. Flights leaving around 6am were the most punctual (95%), those around 6pm the least (58%). Most delay time was caused by late-arriving aircraft (45%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| American Airlines | 884 | 78% | 18 min | 3.2% |
| Southwest Airlines | 726 | 78% | 17 min | 0.8% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 6am to 7am | 168 | 95% | |
| 7am to 8am | 61 | 87% | |
| 8am to 9am | 116 | 84% | |
| 9am to 10am | 135 | 86% | |
| 10am to 11am | 66 | 83% | |
| 11am to 12pm | 112 | 88% | |
| 12pm to 1pm | 42 | 71% | |
| 1pm to 2pm | 63 | 73% | |
| 2pm to 3pm | 80 | 78% | |
| 3pm to 4pm | 142 | 68% | |
| 5pm to 6pm | 77 | 72% | |
| 6pm to 7pm | 136 | 58% | |
| 7pm to 8pm | 148 | 71% | |
| 8pm to 9pm | 76 | 73% | |
| 9pm to 10pm | 99 | 73% | |
| 10pm to 11pm | 68 | 75% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 142 | 16,996 | |
| September 2025 | 132 | 15,465 | |
| October 2025 | 148 | 16,718 | |
| November 2025 | 161 | 15,933 | |
| December 2025 | 149 | 15,722 | |
| January 2026 | 97 | 7,603 | |
| February 2026 | 77 | 6,293 | |
| March 2026 | 115 | 13,124 | |
| April 2026 | 131 | 13,538 | |
| May 2026 | 145 | 16,167 | |
| June 2026 | 148 | 16,762 | |
| July 2026 | 143 | 16,148 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.