San Antonio (SAT) to San Diego (SAN) flights
Southwest Airlines flies nonstop from San Antonio International Airport to San Diego International Airport, with about 14 flights a week in July 2026. The 1,129-mile flight takes about 2h 50m gate to gate.
- Distance
- 1,129 mi · 1,817 km
- Flight time
- 2h 50m
- Airlines
- 1
- Seats filled
- 72%
Airlines flying SAT to SAN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 14 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 70,134 | 2h 50m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SAT to SAN flight schedule
2 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 6:50am and the last at 7:05pm. 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 4143Southwest Airlines | 6:50am | 7:40am | 28 | 96% |
| WN 4485Southwest Airlines | 7:05pm | 7:55pm | 24 | 54% |
Is SAT to SAN on time?
From September 2025 to August 2026, 77% of 611 flights arrived within 15 minutes of schedule and 0.3% were cancelled. Flights leaving around 6am were the most punctual (94%), those around 7pm the least (46%). Most delay time was caused by late-arriving aircraft (53%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 611 | 77% | 14 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 | 242 | 94% | |
| 7am to 8am | 65 | 92% | |
| 5pm to 6pm | 49 | 79% | |
| 6pm to 7pm | 94 | 68% | |
| 7pm to 8pm | 111 | 46% | |
| 8pm to 9pm | 27 | 41% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 57 | 5,655 | |
| September 2025 | 55 | 5,282 | |
| October 2025 | 57 | 6,774 | |
| November 2025 | 55 | 6,011 | |
| December 2025 | 59 | 6,762 | |
| January 2026 | 18 | 2,014 | |
| February 2026 | 19 | 2,170 | |
| March 2026 | 52 | 6,275 | |
| April 2026 | 56 | 5,839 | |
| May 2026 | 57 | 6,911 | |
| June 2026 | 60 | 8,256 | |
| July 2026 | 61 | 8,185 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.