Best Time to Fly AUS to SFO: On-Time Stats by Hour & Airline
Austin - Bergstrom International → San Francisco International
Data through July 2026 · Last updated October 18, 2026
2,805 flights were scheduled from Austin (AUS) to San Francisco (SFO) in the last 12 months, and 73.5% of those that flew arrived on time, 4.1 points below the US average of 77.6%.
Alaska Airlines was the most punctual of the 4 airlines on the route at 83.3%, while Southwest Airlines trailed at 59.6%.
October has been the best month (86% on time) and Sunday the weakest day of the week (73%).
0.6% of flights were cancelled, versus 1.8% nationally.
AUS to SFO 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 |
|---|---|---|---|---|
| Alaska Airlines | 83.3% | 58 min | 0.7% | 283 |
| United Airlines | 77.2% | 75 min | 0.5% | 1,639 |
| Delta Air Lines | 66.5% | 62 min | 1.1% | 474 |
| Southwest Airlines | 59.6% | 54 min | 0.5% | 398 |
| SkyWest Airlines | Limited data | 11 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to SFO
On-time arrival % by scheduled departure hour (local time), 5,134 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.0% | 0.0% | 168 |
| 6am–7am | 95.3% | 0.3% | 297 |
| 7am–8am | 87.0% | 0.6% | 645 |
| 8am–9am | 75.8% | 0.4% | 559 |
| 9am–10am | 81.0% | 1.0% | 416 |
| 10am–11am | 75.1% | 0.9% | 423 |
| 11am–12pm | 68.7% | 0.4% | 247 |
| 12pm–1pm | 76.5% | 3.8% | 53 |
| 1pm–2pm | 74.4% | 1.1% | 364 |
| 2pm–3pm | 76.9% | 0.0% | 52 |
| 3pm–4pm | 75.0% | 0.4% | 729 |
| 4pm–5pm | 61.0% | 0.0% | 333 |
| 5pm–6pm | 76.3% | 0.8% | 244 |
| 6pm–7pm | 81.8% | 0.0% | 66 |
| 7pm–8pm | 68.5% | 0.7% | 310 |
| 8pm–9pm | 59.8% | 1.3% | 228 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on AUS to SFO
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) | 88.8% | +9.5 pts | 0.0% | 107 |
| Christmas & New Year (Dec 20 - Jan 3) | 69.2% | -10.1 pts | 0.0% | 201 |
| Summer peak (Jun 15 - Aug 15) | 67.0% | -12.2 pts | 1.0% | 964 |
| All other days | 79.2% | — | 0.6% | 3,862 |
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).