Baltimore (BWI) to San Antonio (SAT) flights
Southwest Airlines flies nonstop from Baltimore/Washington International Thurgood Marshall Airport to San Antonio International Airport, with about 17 flights a week in July 2026. The 1,407-mile flight takes about 3h 34m gate to gate.
- Distance
- 1,407 mi · 2,264 km
- Flight time
- 3h 34m
- Airlines
- 1
- Seats filled
- 73%
Airlines flying BWI to SAT
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 17 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 89,977 | 3h 34m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BWI to SAT flight schedule
5 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:25am and the last at 6:55pm. 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 677Southwest Airlines | 8:25am | 11:00am | 12 | 83% |
| WN 1049Southwest Airlines | 10:00am | 12:25pm | 12 | 92% |
| WN 1322Southwest Airlines | 2:15pm | 4:45pm | 4 | n/a |
| WN 1078Southwest Airlines | 3:45pm | 6:10pm | 20 | 70% |
| WN 1079Southwest Airlines | 6:55pm | 9:30pm | 16 | 33% |
Is BWI to SAT on time?
From September 2025 to August 2026, 75% of 731 flights arrived within 15 minutes of schedule and 1.6% were cancelled. Flights leaving around 10am were the most punctual (92%), those around 3pm the least (64%). Most delay time was caused by late-arriving aircraft (48%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 731 | 75% | 16 min | 1.6% |
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 |
|---|---|---|---|
| 8am to 9am | 117 | 90% | |
| 9am to 10am | 78 | 82% | |
| 10am to 11am | 77 | 92% | |
| 1pm to 2pm | 45 | 76% | |
| 2pm to 3pm | 30 | 63% | |
| 3pm to 4pm | 53 | 64% | |
| 5pm to 6pm | 29 | 57% | |
| 6pm to 7pm | 82 | 65% | |
| 7pm to 8pm | 73 | 66% | |
| 8pm to 9pm | 98 | 70% | |
| 9pm to 10pm | 17 | 47% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 70 | 8,812 | |
| September 2025 | 70 | 8,723 | |
| October 2025 | 75 | 9,673 | |
| November 2025 | 60 | 7,087 | |
| December 2025 | 70 | 8,982 | |
| January 2026 | 37 | 4,071 | |
| February 2026 | 32 | 3,385 | |
| March 2026 | 52 | 6,717 | |
| April 2026 | 52 | 6,280 | |
| May 2026 | 52 | 7,030 | |
| June 2026 | 75 | 9,987 | |
| July 2026 | 77 | 9,528 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.