Detroit (DTW) to St Louis (STL) flights
Delta Air Lines, Southwest Airlines fly nonstop from Detroit Metropolitan Wayne County Airport to St. Louis Lambert International Airport, with about 39 flights a week in July 2026. The 440-mile flight takes about 1h 36m gate to gate.
- Distance
- 440 mi · 708 km
- Flight time
- 1h 36m
- Airlines
- 2
- Seats filled
- 75%
Airlines flying DTW to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 25 | Boeing 717-200, Airbus A319, Airbus A320-100/200 | 97,009 | 1h 35m |
| Southwest Airlines | 14 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 61,822 | 1h 32m |
| SkyWest AirlinesSeasonal or ended | n/a | Bombardier CRJ900, Bombardier CRJ700, Bombardier CRJ550 | 11,145 | 1h 51m |
| Endeavor AirSeasonal or ended | n/a | Bombardier CRJ900, Bombardier CRJ700 | 1,379 | 1h 38m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A320-100/200, Airbus A320neo | 2,082 | 1h 28m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DTW to STL flight schedule
10 flight numbers flew this route in August 2026, 4 of them almost daily. The first usually leaves at 6:25am and the last at 8:05pm. 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 830Southwest Airlines | 6:25am | 7:00am | 8 | n/a |
| WN 1674Southwest Airlines | 6:35am | 7:10am | 8 | n/a |
| WN 2433Southwest Airlines | 6:55am | 7:45am | 12 | 82% |
| DL 2868Delta Air Lines | 9:00am | 9:37am | 31 | 88% |
| DL 1371Delta Air Lines | 12:36pm | 1:14pm | 25 | 88% |
| WN 4080Southwest Airlines | 2:40pm | 3:10pm | 16 | 50% |
| WN 3807Southwest Airlines | 3:35pm | 4:10pm | 8 | n/a |
| DL 2822Delta Air Lines | 4:59pm | 5:38pm | 31 | 79% |
| WN 1463Southwest Airlines | 7:50pm | 8:20pm | 4 | n/a |
| DL 1541Delta Air Lines | 8:05pm | 8:42pm | 31 | 76% |
Is DTW to STL on time?
From September 2025 to August 2026, 77% of 1,915 flights arrived within 15 minutes of schedule and 1.1% were cancelled. Flights leaving around 7am were the most punctual (92%), those around 8pm the least (63%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (47%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 1,303 | 78% | 16 min | 1.3% |
| Southwest Airlines | 611 | 74% | 15 min | 0.7% |
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 |
|---|---|---|---|
| 6am to 7am | 68 | 93% | |
| 7am to 8am | 145 | 92% | |
| 8am to 9am | 392 | 80% | |
| 9am to 10am | 41 | 90% | |
| 12pm to 1pm | 201 | 84% | |
| 1pm to 2pm | 64 | 70% | |
| 3pm to 4pm | 110 | 79% | |
| 4pm to 5pm | 267 | 78% | |
| 6pm to 7pm | 49 | 59% | |
| 7pm to 8pm | 196 | 72% | |
| 8pm to 9pm | 298 | 63% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 180 | 18,061 | |
| September 2025 | 155 | 14,606 | |
| October 2025 | 173 | 16,527 | |
| November 2025 | 151 | 13,462 | |
| December 2025 | 154 | 13,910 | |
| January 2026 | 123 | 9,037 | |
| February 2026 | 112 | 9,581 | |
| March 2026 | 160 | 13,392 | |
| April 2026 | 167 | 13,380 | |
| May 2026 | 178 | 16,460 | |
| June 2026 | 170 | 17,990 | |
| July 2026 | 172 | 17,277 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.