New Orleans (MSY) to St Louis (STL) flights
Southwest Airlines flies nonstop from Louis Armstrong New Orleans International Airport to St. Louis Lambert International Airport, with about 13 flights a week in July 2026. The 604-mile flight takes about 1h 43m gate to gate.
- Distance
- 604 mi · 972 km
- Flight time
- 1h 43m
- Airlines
- 1
- Seats filled
- 58%
Airlines flying MSY to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 13 | Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800 | 69,718 | 1h 43m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
MSY to STL flight schedule
5 flight numbers flew this route in August 2026. The first usually leaves at 7:15am and the last at 6:10pm. 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 2949Southwest Airlines | 7:15am | 9:00am | 16 | 94% |
| WN 3977Southwest Airlines | 7:35am | 9:20am | 4 | n/a |
| WN 2950Southwest Airlines | 5:35pm | 7:20pm | 12 | 83% |
| WN 1485Southwest Airlines | 6:10pm | 7:55pm | 8 | n/a |
| WN 996Southwest Airlines | 6:10pm | 7:55pm | 4 | n/a |
Is MSY to STL on time?
From September 2025 to August 2026, 83% of 733 flights arrived within 15 minutes of schedule and 0.3% were cancelled. Flights leaving around 7am were the most punctual (95%), those around 7pm the least (60%). Most delay time was caused by late-arriving aircraft (68%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 733 | 83% | 10 min | 0.3% |
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 | 36 | 91% | |
| 7am to 8am | 274 | 95% | |
| 8am to 9am | 24 | 100% | |
| 11am to 12pm | 18 | 89% | |
| 1pm to 2pm | 22 | 73% | |
| 2pm to 3pm | 31 | 74% | |
| 5pm to 6pm | 65 | 94% | |
| 6pm to 7pm | 113 | 66% | |
| 7pm to 8pm | 116 | 60% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 48 | 4,119 | |
| September 2025 | 47 | 4,358 | |
| October 2025 | 82 | 7,838 | |
| November 2025 | 58 | 6,006 | |
| December 2025 | 60 | 5,082 | |
| January 2026 | 64 | 5,718 | |
| February 2026 | 70 | 6,451 | |
| March 2026 | 68 | 7,037 | |
| April 2026 | 60 | 5,641 | |
| May 2026 | 60 | 6,367 | |
| June 2026 | 56 | 5,911 | |
| July 2026 | 58 | 5,300 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.