AUS to SAN flight delays
Austin, TX (AUS) San Diego, CA (SAN) · 1,164 miles
2,545 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
74.99%
Arrived on time
Within 15 minutes of schedule
1.06%
Cancelled
Share of scheduled flights
59 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. SkyWest Airlines arrived on time 11.5 points more often than Southwest Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The season swings this route hard. In January it ran 21 points more punctual than in June — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Flights from Austin to San Diego run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on AUS to SAN. Southwest Airlines was late most often. Flights ran closest to schedule in January and worst in June.
Every airline on AUS to SAN
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 1,422 | 70.35% | 0.63% | 54 min | D |
| SkyWest Airlines | 1,000 | 81.88% | 1.5% | 62 min | C |
| Frontier Airlines | 123 | 73.33% | 2.44% | 94 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SAN to AUS San Diego back to Austin 72.97% on time DOther routes from Austin
Common questions
Are flights from Austin to San Diego usually delayed?
74.99% of flights on the AUS to SAN route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Austin to San Diego?
SkyWest Airlines, at 81.88% on time across 1,000 flights. The least punctual on the route was Southwest Airlines at 70.35%.
How often are AUS to SAN flights cancelled?
1.06% of scheduled flights did not operate — about 11 in every thousand. That is in the normal range.
What is the best month to fly Austin to San Diego?
January, when 84% of flights arrived on time. The worst was June at 63%.
When AUS to SAN flights are late, how late are they?
About 59 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on AUS to SAN during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →