San Antonio (SAT) to San Diego (SAN): On-Time Performance
Data through July 2026
The calendar drives reliability on SAT–SAN. November 2024 flights landed on schedule 91% of the time, but December 2024 dropped to 61% — a gap of 30 points. Across the full period the route averages 79% on-time against a national 78%. Morning departures also hold up better than evening ones (91% vs 64%), which matters most in the rough months.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.2%
- Flights/day
- 1.7
- last 12 months
- Duration
- 2h 57m
- scheduled
- Distance
- 1,129 mi
Monthly on-time trend
Best time to fly from SAT to SAN
Aim for departures around 7 a.m. (94% on-time); avoid 8 p.m. departures (43%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 13 min |
| Tuesdaybest | 85% | 10 min |
| Wednesday | 79% | 9 min |
| Thursday | 74% | 14 min |
| Friday | 78% | 13 min |
| Saturday | 84% | 8 min |
| Sunday | 73% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft55%
- Airline operations23%
- National airspace system19%
- Weather2%
Frequently asked questions
- How often are flights from SAT to SAN delayed?
- 21% of SAT–SAN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 12 minutes.
- What is the best time of day to fly from SAT to SAN?
- Departures around 7 a.m. have the best record (94% on-time), while departures around 8 p.m. have the worst (43%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAT to SAN?
- The scheduled SAT–SAN flight time averages 2h 57m over 1,129 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are SAT to SAN flights cancelled?
- 0.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SAT to SAN?
- December 2024 was the roughest month in this dataset, with only 61% of arrivals on time. The best was November 2024 at 91%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 1,304 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.