St. Louis Lambert International ⇄ Chicago Midway International STL–MDW
Airlines flew 3,467 flights between St. Louis Lambert International STL in St Louis, MO and Chicago Midway International MDW in Chicago, IL in the twelve months to July 2026, both directions together: 347,894 passengers in 554,125 seats, 63% of them filled, and 433,795 pounds of freight. 251 miles, about 45 minutes in the air, on 4 airlines: Southwest Airlines Co. (3,463), Global Crossing Airlines, Inc. (2), Sun Country Airlines d/b/a MN Airlines (1), Delta Air Lines Inc. (1). 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 | 241 |
| 2/25 | 218 |
| 3/25 | 281 |
| 4/25 | 323 |
| 5/25 | 336 |
| 6/25 | 328 |
| 7/25 | 353 |
| 8/25 | 311 |
| 9/25 | 302 |
| 10/25 | 264 |
| 11/25 | 249 |
| 12/25 | 285 |
| 1/26 | 243 |
| 2/26 | 225 |
| 3/26 | 286 |
| 4/26 | 310 |
| 5/26 | 315 |
| 6/26 | 327 |
| 7/26 | 350 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 19,558 |
| 2/25 | 16,154 |
| 3/25 | 28,083 |
| 4/25 | 28,750 |
| 5/25 | 31,978 |
| 6/25 | 34,497 |
| 7/25 | 37,476 |
| 8/25 | 34,085 |
| 9/25 | 32,552 |
| 10/25 | 29,650 |
| 11/25 | 24,386 |
| 12/25 | 25,595 |
| 1/26 | 18,087 |
| 2/26 | 17,877 |
| 3/26 | 29,396 |
| 4/26 | 28,980 |
| 5/26 | 30,715 |
| 6/26 | 37,527 |
| 7/26 | 39,044 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 3,463 | 347,743 | 63% | scheduled passenger service |
| Global Crossing Airlines, Inc. GCA | 2 | 106 | 29% | charter passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 1 | 0 | 0% | charter passenger service |
| Delta Air Lines Inc. DL | 1 | 45 | 62% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-700/700LR/Max 7 | 1,473 | 139 | 136,360 |
| Boeing B737 Max 800 | 1,146 | 175 | 123,839 |
| Boeing 737-800 | 845 | 175 | 87,544 |
| Airbus Industrie A320-100/200 | 2 | 180 | 106 |
| Boeing 757-200 | 1 | 72 | 45 |
STL → MDW this direction alone · flown January 2025 to July 2026
1,763 flights of 1,704 scheduled, 176,683 passengers in 280,845 seats, 200,730 pounds of freight. Southwest Airlines Co. 1,761; Global Crossing Airlines, Inc. 1; Sun Country Airlines d/b/a MN Airlines 1.
MDW → STL this direction alone · flown January 2025 to July 2026
1,704 flights of 1,708 scheduled, 171,211 passengers in 273,280 seats, 233,065 pounds of freight. Southwest Airlines Co. 1,702; Delta Air Lines Inc. 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: St. Louis Lambert International STL and Chicago Midway International MDW; all routes.