Austin (AUS) to San Diego (SAN): On-Time Performance
Data through July 2026
The calendar drives reliability on AUS–SAN. August 2024 flights landed on schedule 88% of the time, but July 2026 dropped to 62% — a gap of 26 points. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 57%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 7.0
- last 12 months
- Duration
- 3h 8m
- scheduled
- Distance
- 1,164 mi
Best airline from AUS to SAN
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 79% | 13 min | 1.0% | 312 |
| SkyWest Airlines | 78% | 14 min | 1.5% | 1,443 |
| Southwest Airlines | 71% | 18 min | 0.5% | 2,923 |
| Frontier Airlines | 70% | 28 min | 3.7% | 134 |
Monthly on-time trend
Best time to fly from AUS to SAN
Aim for departures around 6 a.m. (88% on-time); avoid 8 p.m. departures (51%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 17 min |
| Tuesday | 80% | 12 min |
| Wednesday | 80% | 14 min |
| Thursday | 67% | 20 min |
| Friday | 71% | 19 min |
| Saturdaybest | 83% | 11 min |
| Sunday | 70% | 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 aircraft57%
- Airline operations23%
- National airspace system17%
- Weather3%
Frequently asked questions
- How often are flights from AUS to SAN delayed?
- 26% of AUS–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 16 minutes.
- Which airline is most reliable from AUS to SAN?
- Alaska Airlines has the best on-time record on this route at 79%, based on 312 flights. 4 airlines flew AUS–SAN frequently enough to compare in this period.
- What is the best time of day to fly from AUS to SAN?
- Departures around 6 a.m. have the best record (88% on-time), while departures around 8 p.m. have the worst (51%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from AUS to SAN?
- The scheduled AUS–SAN flight time averages 3h 8m over 1,164 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are AUS to SAN flights cancelled?
- 0.9% 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 AUS to SAN?
- July 2026 was the roughest month in this dataset, with only 62% of arrivals on time. The best was August 2024 at 88%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 4,812 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.