Baltimore/Washington International Thurgood Marshall ⇄ St. Louis Lambert International BWI–STL
Airlines flew 2,745 flights between Baltimore/Washington International Thurgood Marshall BWI in Baltimore, MD and St. Louis Lambert International STL in St Louis, MO in the twelve months to July 2026, both directions together: 254,827 passengers in 410,159 seats, 62% of them filled, and 4,666,567 pounds of freight. 738 miles, about 112 minutes in the air, on 5 airlines: Southwest Airlines Co. (2,528), Sun Country Airlines d/b/a MN Airlines (214), Delta Air Lines Inc. (1), Eastern Air Express, LLC (EAX) (1) and 1 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 | 136 |
| 2/25 | 144 |
| 3/25 | 210 |
| 4/25 | 247 |
| 5/25 | 251 |
| 6/25 | 247 |
| 7/25 | 249 |
| 8/25 | 280 |
| 9/25 | 264 |
| 10/25 | 246 |
| 11/25 | 241 |
| 12/25 | 226 |
| 1/26 | 153 |
| 2/26 | 147 |
| 3/26 | 218 |
| 4/26 | 214 |
| 5/26 | 231 |
| 6/26 | 254 |
| 7/26 | 271 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 12,973 |
| 2/25 | 12,031 |
| 3/25 | 21,566 |
| 4/25 | 25,700 |
| 5/25 | 29,149 |
| 6/25 | 28,734 |
| 7/25 | 28,380 |
| 8/25 | 27,335 |
| 9/25 | 24,301 |
| 10/25 | 25,251 |
| 11/25 | 21,024 |
| 12/25 | 19,945 |
| 1/26 | 12,090 |
| 2/26 | 12,348 |
| 3/26 | 22,031 |
| 4/26 | 19,525 |
| 5/26 | 22,408 |
| 6/26 | 23,779 |
| 7/26 | 24,790 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 2,528 | 254,748 | 62% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 214 | 0 | charter cargo service | |
| Delta Air Lines Inc. DL | 1 | 79 | 40% | charter passenger service |
| Eastern Air Express, LLC (EAX) 37Q | 1 | 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 | 929 | 140 | 91,107 |
| Boeing B737 Max 800 | 926 | 175 | 92,345 |
| Boeing 737-800 | 888 | 133 | 71,296 |
| Boeing 757-200 | 1 | 199 | 79 |
| Airbus Industrie A320-100/200 | 1 | 180 | 0 |
BWI → STL this direction alone · flown January 2025 to July 2026
1,351 flights of 1,268 scheduled, 129,167 passengers in 206,558 seats, 1,517,131 pounds of freight. Southwest Airlines Co. 1,259; Sun Country Airlines d/b/a MN Airlines 91; Delta Air Lines Inc. 1.
STL → BWI this direction alone · flown January 2025 to July 2026
1,394 flights of 1,279 scheduled, 125,660 passengers in 203,601 seats, 3,149,436 pounds of freight. Southwest Airlines Co. 1,269; Sun Country Airlines d/b/a MN Airlines 123; Eastern Air Express, LLC (EAX) 1; Global Crossing Airlines, 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: Baltimore/Washington International Thurgood Marshall BWI and St. Louis Lambert International STL; all routes.