Pittsburgh International ⇄ St. Louis Lambert International PIT–STL
Airlines flew 1,025 flights between Pittsburgh International PIT in Pittsburgh, PA and St. Louis Lambert International STL in St Louis, MO in the twelve months to July 2026, both directions together: 99,518 passengers in 158,003 seats, 63% of them filled, and 105,881 pounds of freight. 554 miles, about 84 minutes in the air, on 6 airlines: Southwest Airlines Co. (1,010), United Air Lines Inc. (5), Republic Airline (5), PSA Airlines Inc. (2) and 2 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 | 55 |
| 2/25 | 54 |
| 3/25 | 65 |
| 4/25 | 60 |
| 5/25 | 64 |
| 6/25 | 72 |
| 7/25 | 72 |
| 8/25 | 71 |
| 9/25 | 70 |
| 10/25 | 71 |
| 11/25 | 63 |
| 12/25 | 63 |
| 1/26 | 56 |
| 2/26 | 55 |
| 3/26 | 114 |
| 4/26 | 114 |
| 5/26 | 114 |
| 6/26 | 113 |
| 7/26 | 121 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 5,505 |
| 2/25 | 4,666 |
| 3/25 | 6,444 |
| 4/25 | 6,160 |
| 5/25 | 6,947 |
| 6/25 | 8,021 |
| 7/25 | 8,406 |
| 8/25 | 7,062 |
| 9/25 | 6,403 |
| 10/25 | 8,013 |
| 11/25 | 6,994 |
| 12/25 | 6,057 |
| 1/26 | 4,484 |
| 2/26 | 4,341 |
| 3/26 | 10,273 |
| 4/26 | 10,875 |
| 5/26 | 10,870 |
| 6/26 | 11,713 |
| 7/26 | 12,433 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 1,010 | 98,792 | 63% | scheduled passenger service |
| United Air Lines Inc. UA | 5 | 338 | 38% | charter passenger service |
| Republic Airline YX | 5 | 269 | 78% | scheduled passenger service |
| PSA Airlines Inc. OH | 2 | 119 | 84% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 2 | 0 | 0% | charter passenger service |
| Global Crossing Airlines, Inc. GCA | 1 | 0 | 0% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-700/700LR/Max 7 | 573 | 139 | 54,231 |
| Boeing B737 Max 800 | 230 | 175 | 24,001 |
| Boeing 737-800 | 209 | 175 | 20,560 |
| Embraer ERJ-175 | 5 | 69 | 269 |
| Boeing B737 Max 900 | 3 | 179 | 209 |
| Boeing 737-900ER | 2 | 179 | 129 |
| Airbus Industrie A320-100/200 | 1 | 150 | 0 |
| Canadair RJ-700 | 1 | 65 | 59 |
| Canadair CRJ 900 | 1 | 76 | 60 |
PIT → STL this direction alone · flown January 2025 to July 2026
506 flights of 500 scheduled, 48,727 passengers in 77,874 seats, 69,796 pounds of freight. Southwest Airlines Co. 500; United Air Lines Inc. 4; Global Crossing Airlines, Inc. 1; Republic Airline 1.
STL → PIT this direction alone · flown January 2025 to July 2026
519 flights of 502 scheduled, 50,791 passengers in 80,129 seats, 36,085 pounds of freight. Southwest Airlines Co. 510; Republic Airline 4; PSA Airlines Inc. 2; Sun Country Airlines d/b/a MN Airlines 2; 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: Pittsburgh International PIT and St. Louis Lambert International STL; all routes.