San Antonio (SAT) to St Louis (STL) flights
Southwest Airlines flies nonstop from San Antonio International Airport to St. Louis Lambert International Airport, with about 12 flights a week in July 2026. The 786-mile flight takes about 2h 1m gate to gate.
- Distance
- 786 mi · 1,265 km
- Flight time
- 2h 1m
- Airlines
- 1
- Seats filled
- 75%
Airlines flying SAT to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 12 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 67,071 | 2h 1m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SAT to STL flight schedule
4 flight numbers flew this route in August 2026. The first usually leaves at 7:10am and the last at 3:50pm. 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 1430Southwest Airlines | 7:10am | 9:15am | 12 | 92% |
| WN 2209Southwest Airlines | 7:20am | 9:25am | 16 | 94% |
| WN 3001Southwest Airlines | 3:30pm | 5:40pm | 12 | 42% |
| WN 2340Southwest Airlines | 3:50pm | 6:00pm | 4 | n/a |
Is SAT to STL on time?
From September 2025 to August 2026, 85% of 557 flights arrived within 15 minutes of schedule and 0% were cancelled. Flights leaving around 5am were the most punctual (98%), those around 4pm the least (69%). Most delay time was caused by late-arriving aircraft (55%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 557 | 85% | 9 min | 0% |
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 | 48 | 98% | |
| 6am to 7am | 13 | 92% | |
| 7am to 8am | 172 | 94% | |
| 10am to 11am | 31 | 97% | |
| 12pm to 1pm | 24 | 92% | |
| 2pm to 3pm | 17 | 77% | |
| 3pm to 4pm | 99 | 80% | |
| 4pm to 5pm | 88 | 69% | |
| 5pm to 6pm | 45 | 71% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 47 | 5,517 | |
| September 2025 | 47 | 5,743 | |
| October 2025 | 53 | 7,069 | |
| November 2025 | 34 | 3,969 | |
| December 2025 | 40 | 4,277 | |
| January 2026 | 30 | 2,734 | |
| February 2026 | 27 | 2,998 | |
| March 2026 | 55 | 6,695 | |
| April 2026 | 56 | 6,745 | |
| May 2026 | 55 | 7,387 | |
| June 2026 | 52 | 7,033 | |
| July 2026 | 54 | 6,997 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.