Carrier route record
OOAUS→SAN
SkyWest Airlines · Austin to San Diego
- Flights
- 1,000
- Period
- July 2025 to June 2026
- Share of route
- 39%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on AUS to SAN lands a B, 4 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 1,000 flights, with a median arrival 6 minutes early.
Set against the rest of the country, SkyWest's AUS to SAN record is 4 points better than the US average of 77.6%. That gap is worth roughly 43 fewer late arrivals for every thousand flights.
Key figures
On time
81.9%
Arrivals under 15 minutes late, of 977 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
1.50%
National rate is 1.81%
Whole route
75.0%
Every carrier on AUS to SAN, 2,545 flights
These figures cover 1,000 flights between July 2025 and June 2026. The median arrival is 6 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
SkyWest against every carrier on AUS to SAN
SkyWest flew 1,000 of the 2,545 flights on AUS to SAN, about 39% of it. Its 81.9% on time is 7 points better than the route as a whole, which runs 75.0%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 81.9% to Southwest at 70.4%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 1,000 | 81.9% | 63 min | 1.50% | B |
| Frontier Airlinesthin sample | 123 | 73.3% | 94 min | 2.44% | C |
| Southwest Airlines | 1,422 | 70.4% | 54 min | 0.63% | C+ |
Flight by flight
SkyWest flight numbers on AUS to SAN
Departure window
When SkyWest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 21 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am362 flights86.9%
- 8am–11am—
- 11am–2pm57 flights89.1%
- 2pm–5pm406 flights82.2%
- 5pm–8pm—
- 8pm–5am175 flights68.4%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 89.1% on time, ahead of 8pm–5am at 68.4%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 2pm–5pm window is the busiest, with 406 flights scheduled in it.
Across the year
SkyWest on AUS to SAN through the year
December is the weak month at 73.6% on time, against 91.5% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. March was the busiest month here, with 118 flights.
Across the week, Wednesday is the strongest day at 89.0% on time and Sunday the weakest at 75.5%. 14 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 51% of the 11,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 51%Late-arriving aircraft
- 26%Carrier
- 17%National Airspace System
- 5%Extreme weather
- 0%Security
51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 11,000 reported delay minutes here, that single category outweighs weather by 10 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 11,059 reported delay minutes.
Cancellations sit at 1.50% against a national 1.81%, which is ordinary. Diversions add another 0.80%.
Connections and stage length
What a delay here costs
5.8% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 1,164 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg runs 80.1% on time across 1,000 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 1,000 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on AUS to SAN
Put together: treat all of this as provisional. 1,000 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 81.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 977 completed flights over 12 months sit behind that.
Related
Where to go next
- AUS to SAN, every carrier
- SkyWest on SAN to AUS, the return leg
- Frontier Airlines on AUS to SAN73.3%
- Southwest Airlines on AUS to SAN70.4%
- SkyWest Airlines network-wide record
- Austin-Bergstrom International (AUS) delay statistics
- San Diego International (SAN) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.