Kansas City (MCI) to St Louis (STL) flights
Southwest Airlines flies nonstop from Kansas City International Airport to St. Louis Lambert International Airport, with about 21 flights a week in July 2026. The 237-mile flight takes about 56m gate to gate.
- Distance
- 237 mi · 381 km
- Flight time
- 56m
- Airlines
- 1
- Seats filled
- 72%
Airlines flying MCI to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 21 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 119,777 | 56m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
MCI to STL flight schedule
8 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:20am and the last at 5:05pm. 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 2536Southwest Airlines | 8:20am | 9:25am | 16 | 100% |
| WN 2008Southwest Airlines | 8:25am | 9:30am | 12 | 100% |
| WN 2353Southwest Airlines | 11:55am | 12:55pm | 8 | n/a |
| WN 2811Southwest Airlines | 12:15pm | 1:15pm | 12 | 58% |
| WN 2351Southwest Airlines | 1:30pm | 2:30pm | 4 | n/a |
| WN 1315Southwest Airlines | 2:25pm | 3:25pm | 4 | n/a |
| WN 2538Southwest Airlines | 5:00pm | 6:05pm | 20 | 45% |
| WN 866Southwest Airlines | 5:05pm | 6:10pm | 4 | n/a |
Is MCI to STL on time?
From September 2025 to August 2026, 85% of 1,017 flights arrived within 15 minutes of schedule and 0.5% were cancelled. Flights leaving around 6am were the most punctual (99%), those around 5pm the least (56%). Most delay time was caused by late-arriving aircraft (71%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,017 | 85% | 8 min | 0.5% |
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 |
|---|---|---|---|
| 5am to 6am | 83 | 96% | |
| 6am to 7am | 104 | 99% | |
| 8am to 9am | 172 | 93% | |
| 10am to 11am | 21 | 91% | |
| 11am to 12pm | 66 | 91% | |
| 12pm to 1pm | 91 | 87% | |
| 1pm to 2pm | 103 | 81% | |
| 2pm to 3pm | 22 | 73% | |
| 3pm to 4pm | 49 | 96% | |
| 4pm to 5pm | 108 | 82% | |
| 5pm to 6pm | 97 | 56% | |
| 6pm to 7pm | 100 | 75% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 96 | 10,571 | |
| September 2025 | 93 | 10,618 | |
| October 2025 | 89 | 11,026 | |
| November 2025 | 82 | 8,275 | |
| December 2025 | 85 | 9,796 | |
| January 2026 | 69 | 6,906 | |
| February 2026 | 71 | 7,513 | |
| March 2026 | 88 | 10,098 | |
| April 2026 | 99 | 11,493 | |
| May 2026 | 90 | 11,326 | |
| June 2026 | 96 | 12,136 | |
| July 2026 | 95 | 11,228 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.