Best Time to Fly SFO to AUS: On-Time Stats by Hour & Airline
San Francisco International → Austin - Bergstrom International
Data through July 2026 · Last updated October 18, 2026
2,802 flights were scheduled from San Francisco (SFO) to Austin (AUS) in the last 12 months, and 74.0% of those that flew arrived on time, 3.6 points below the US average of 77.6%.
Among 4 airlines, Alaska Airlines led with 86.4% on time and Southwest Airlines was last with 43.5%.
Over 24 months, Saturday was the most reliable day (85% on time) and July the worst month (68%).
The cancellation rate was 0.5% (US average 1.8%).
SFO 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 |
|---|---|---|---|---|
| Alaska Airlines | 86.4% | 63 min | 0.3% | 282 |
| United Airlines | 82.4% | 52 min | 0.4% | 1,637 |
| Delta Air Lines | 63.1% | 81 min | 1.5% | 474 |
| Southwest Airlines | 43.5% | 62 min | 0.0% | 398 |
| SkyWest Airlines | Limited data | 11 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SFO to AUS
On-time arrival % by scheduled departure hour (local time), 5,131 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 91.9% | 0.0% | 111 |
| 7am–8am | 95.1% | 0.4% | 922 |
| 8am–9am | 86.5% | 0.8% | 255 |
| 9am–10am | 77.7% | 0.9% | 105 |
| 10am–11am | 67.8% | 0.0% | 327 |
| 11am–12pm | 65.7% | 1.4% | 366 |
| 12pm–1pm | 71.2% | 0.2% | 393 |
| 1pm–2pm | 70.1% | 1.2% | 858 |
| 2pm–3pm | Limited data | 21 | |
| 3pm–4pm | Limited data | 2 | |
| 4pm–5pm | 73.4% | 0.7% | 146 |
| 5pm–6pm | 68.9% | 0.2% | 486 |
| 6pm–7pm | 83.9% | 0.3% | 749 |
| 7pm–8pm | 75.3% | 0.0% | 73 |
| 11pm–12am | 88.9% | 0.3% | 317 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SFO 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) | 85.8% | +5.3 pts | 0.0% | 106 |
| Christmas & New Year (Dec 20 - Jan 3) | 68.7% | -11.9 pts | 0.0% | 201 |
| Summer peak (Jun 15 - Aug 15) | 72.8% | -7.8 pts | 1.0% | 963 |
| All other days | 80.6% | — | 0.5% | 3,861 |
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).