San Diego (SAN) to San Antonio (SAT): On-Time Performance
Data through May 2026
When you fly SAN to SAT matters as much as anything else about the booking: the route swung from 84% on-time in November 2024 to just 57% in July 2024. Across the full period the route averages 72% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 60%), which matters most in the rough months.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 1.7
- last 12 months
- Duration
- 2h 44m
- scheduled
- Distance
- 1,129 mi
Monthly on-time trend
Best time to fly from SAN to SAT
Aim for departures around 4 p.m. (90% on-time); avoid 6 p.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 18 min |
| Tuesdaybest | 80% | 9 min |
| Wednesday | 78% | 12 min |
| Thursday | 70% | 20 min |
| Friday | 69% | 19 min |
| Saturday | 73% | 16 min |
| Sunday | 67% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft71%
- Airline operations18%
- National airspace system12%
Frequently asked questions
- How often are flights from SAN to SAT delayed?
- 28% of SAN–SAT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 16 minutes.
- What is the best time of day to fly from SAN to SAT?
- Departures around 4 p.m. have the best record (90% on-time), while departures around 6 p.m. have the worst (55%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAN to SAT?
- The scheduled SAN–SAT flight time averages 2h 44m over 1,129 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are SAN to SAT flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SAN to SAT?
- July 2024 was the roughest month in this dataset, with only 57% of arrivals on time. The best was November 2024 at 84%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,279 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.