St Louis (STL) to Milwaukee (MKE) flights
Southwest Airlines flies nonstop from St. Louis Lambert International Airport to General Mitchell International Airport, with about 13 flights a week in July 2026. The 317-mile flight takes about 1h 8m gate to gate.
- Distance
- 317 mi · 510 km
- Flight time
- 1h 8m
- Airlines
- 1
- Seats filled
- 63%
Airlines flying STL to MKE
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 13 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 67,990 | 1h 8m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
STL to MKE flight schedule
5 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:25am and the last at 8:40pm. 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 4500Southwest Airlines | 8:25am | 9:35am | 28 | 89% |
| WN 4133Southwest Airlines | 2:30pm | 3:45pm | 4 | n/a |
| WN 178Southwest Airlines | 6:45pm | 7:55pm | 8 | n/a |
| WN 1321Southwest Airlines | 7:05pm | 8:15pm | 12 | 67% |
| WN 2254Southwest Airlines | 8:40pm | 9:50pm | 4 | n/a |
Is STL to MKE on time?
From September 2025 to August 2026, 82% of 686 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 8am were the most punctual (95%), those around 9pm the least (68%). Most delay time was caused by late-arriving aircraft (61%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 686 | 82% | 12 min | 0.6% |
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 |
|---|---|---|---|
| 8am to 9am | 138 | 95% | |
| 9am to 10am | 29 | 90% | |
| 10am to 11am | 138 | 88% | |
| 11am to 12pm | 28 | 93% | |
| 1pm to 2pm | 14 | 79% | |
| 6pm to 7pm | 16 | 88% | |
| 7pm to 8pm | 40 | 78% | |
| 8pm to 9pm | 94 | 75% | |
| 9pm to 10pm | 159 | 68% | |
| 10pm to 11pm | 18 | 67% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 60 | 7,284 | |
| September 2025 | 60 | 7,075 | |
| October 2025 | 57 | 6,089 | |
| November 2025 | 54 | 5,327 | |
| December 2025 | 58 | 5,630 | |
| January 2026 | 57 | 4,939 | |
| February 2026 | 52 | 5,076 | |
| March 2026 | 53 | 4,597 | |
| April 2026 | 61 | 6,378 | |
| May 2026 | 61 | 5,462 | |
| June 2026 | 57 | 5,398 | |
| July 2026 | 58 | 4,884 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.