St. Louis Lambert International ⇄ Philadelphia International STL–PHL
Airlines flew 3,172 flights between St. Louis Lambert International STL in St Louis, MO and Philadelphia International PHL in Philadelphia, PA in the twelve months to July 2026, both directions together: 331,620 passengers in 439,090 seats, 76% of them filled, and 294,856 pounds of freight. 814 miles, about 106 minutes in the air, on 8 airlines: Southwest Airlines Co. (1,442), American Airlines Inc. (1,277), PSA Airlines Inc. (254), Republic Airline (193) and 4 more. Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 166 |
| 2/25 | 151 |
| 3/25 | 209 |
| 4/25 | 228 |
| 5/25 | 231 |
| 6/25 | 261 |
| 7/25 | 262 |
| 8/25 | 283 |
| 9/25 | 264 |
| 10/25 | 296 |
| 11/25 | 322 |
| 12/25 | 298 |
| 1/26 | 195 |
| 2/26 | 156 |
| 3/26 | 230 |
| 4/26 | 260 |
| 5/26 | 287 |
| 6/26 | 295 |
| 7/26 | 286 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 13,948 |
| 2/25 | 11,966 |
| 3/25 | 18,948 |
| 4/25 | 23,897 |
| 5/25 | 28,000 |
| 6/25 | 31,517 |
| 7/25 | 32,664 |
| 8/25 | 33,144 |
| 9/25 | 30,238 |
| 10/25 | 32,660 |
| 11/25 | 29,789 |
| 12/25 | 29,483 |
| 1/26 | 14,223 |
| 2/26 | 12,104 |
| 3/26 | 25,656 |
| 4/26 | 27,438 |
| 5/26 | 33,364 |
| 6/26 | 32,094 |
| 7/26 | 31,427 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 1,442 | 185,118 | 77% | scheduled passenger service |
| American Airlines Inc. AA | 1,277 | 120,639 | 73% | scheduled passenger service |
| PSA Airlines Inc. OH | 254 | 13,830 | 74% | scheduled passenger service |
| Republic Airline YX | 193 | 11,792 | 81% | scheduled passenger service |
| CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle LF | 2 | 24 | 52% | charter passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 2 | 70 | 19% | charter passenger service |
| Federal Express Corporation FX | 1 | 0 | scheduled cargo service | |
| United Air Lines Inc. UA | 1 | 147 | 89% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Airbus Industrie A319 | 1,237 | 128 | 116,065 |
| Boeing B737 Max 800 | 571 | 175 | 76,204 |
| Boeing 737-800 | 526 | 175 | 68,585 |
| Boeing 737-700/700LR/Max 7 | 350 | 140 | 40,881 |
| Embraer ERJ-175 | 193 | 76 | 11,792 |
| Canadair CRJ 900 | 191 | 76 | 10,232 |
| Canadair RJ-700 | 63 | 65 | 3,598 |
| Airbus Industrie A320-100/200 | 20 | 150 | 2,142 |
| Airbus Industrie A321Neoxlr | 18 | 190 | 2,097 |
| Bombardier Challenger 604/605 | 2 | 23 | 24 |
| Airbus Industrie A300-600/R/CF/RCF | 1 | 0 | 0 |
STL → PHL this direction alone · flown January 2025 to July 2026
1,581 flights of 1,601 scheduled, 161,092 passengers in 218,077 seats, 155,962 pounds of freight. Southwest Airlines Co. 720; American Airlines Inc. 633; PSA Airlines Inc. 128; Republic Airline 98; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 1; Sun Country Airlines d/b/a MN Airlines 1.
PHL → STL this direction alone · flown January 2025 to July 2026
1,591 flights of 1,614 scheduled, 170,528 passengers in 221,013 seats, 138,894 pounds of freight, 1,650 pounds of mail. Southwest Airlines Co. 722; American Airlines Inc. 644; PSA Airlines Inc. 126; Republic Airline 95; Federal Express Corporation 1; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 1; Sun Country Airlines d/b/a MN Airlines 1; United Air Lines Inc. 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: St. Louis Lambert International STL and Philadelphia International PHL; all routes.