Best Time to Fly SAN to AUS: On-Time Stats by Hour & Airline
San Diego International → Austin - Bergstrom International
Data through July 2026 · Last updated October 18, 2026
2,577 flights were scheduled from San Diego (SAN) to Austin (AUS) in the last 12 months, and 71.9% of those that flew arrived on time, 5.7 points below the US average of 77.6%.
SkyWest Airlines was the most punctual of the 3 airlines on the route at 79.8%, while Southwest Airlines trailed at 66.5%.
September has been the best month (84% on time) and Friday the weakest day of the week (64%).
1.0% of flights were cancelled, versus 1.8% nationally.
SAN to AUS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 79.8% | 60 min | 1.4% | 1,036 |
| Frontier Airlines | 68.3% | 50 min | 1.9% | 106 |
| Southwest Airlines | 66.5% | 50 min | 0.6% | 1,435 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAN to AUS
On-time arrival % by scheduled departure hour (local time), 4,636 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 88.7% | 0.0% | 186 |
| 7am–8am | 87.5% | 1.2% | 591 |
| 8am–9am | 82.6% | 0.0% | 306 |
| 9am–10am | 76.3% | 0.7% | 557 |
| 10am–11am | 72.1% | 0.7% | 454 |
| 11am–12pm | 63.6% | 1.8% | 113 |
| 12pm–1pm | 60.0% | 1.1% | 91 |
| 1pm–2pm | 56.0% | 0.6% | 171 |
| 2pm–3pm | 61.4% | 1.0% | 395 |
| 3pm–4pm | 70.1% | 0.5% | 195 |
| 4pm–5pm | 60.2% | 0.5% | 187 |
| 5pm–6pm | 72.3% | 1.1% | 570 |
| 6pm–7pm | 69.6% | 1.1% | 436 |
| 7pm–8pm | 62.0% | 1.2% | 320 |
| 8pm–9pm | 39.3% | 4.7% | 64 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAN to AUS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 80.0% | +5.7 pts | 2.3% | 87 |
| Christmas & New Year (Dec 20 - Jan 3) | 55.7% | -18.6 pts | 4.2% | 193 |
| Summer peak (Jun 15 - Aug 15) | 65.7% | -8.6 pts | 0.4% | 838 |
| All other days | 74.3% | — | 0.8% | 3,518 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).