Des Moines (DSM) to St Louis (STL) flights
There were no regular nonstop flights from DSM to STL in July 2026; the route was flown 403 times in the previous 12 months. The 259-mile flight takes about 1h 0m gate to gate.
- Distance
- 259 mi · 417 km
- Flight time
- 1h 0m
- Airlines
- 1
- Seats filled
- 63%
Airlines flying DSM to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest AirlinesSeasonal or ended | n/a | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 42,449 | 1h 0m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
Is DSM to STL on time?
From September 2025 to August 2026, 90% of 347 flights arrived within 15 minutes of schedule and 0.9% were cancelled. Flights leaving around 3pm were the most punctual (97%), those around 6pm the least (80%). Most delay time was caused by late-arriving aircraft (38%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 347 | 90% | 7 min | 0.9% |
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 | 75 | 93% | |
| 6am to 7am | 90 | 97% | |
| 8am to 9am | 15 | 93% | |
| 3pm to 4pm | 33 | 97% | |
| 4pm to 5pm | 56 | 88% | |
| 5pm to 6pm | 17 | 77% | |
| 6pm to 7pm | 61 | 80% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 56 | 6,580 | |
| September 2025 | 56 | 6,037 | |
| October 2025 | 57 | 6,120 | |
| November 2025 | 54 | 5,536 | |
| December 2025 | 59 | 6,647 | |
| January 2026 | 59 | 5,179 | |
| February 2026 | 52 | 5,454 | |
| March 2026 | 8 | 649 | |
| July 2026 | 3 | 280 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.