Best Time to Fly SAT to SFO: On-Time Stats by Hour & Airline
San Antonio International → San Francisco International
Data through July 2026 · Last updated October 18, 2026
434 flights were scheduled from San Antonio (SAT) to San Francisco (SFO) in the last 12 months, and 86.0% of those that flew arrived on time, 8.4 points above the US average of 77.6%.
Among 2 airlines, United Airlines led with 88.0% on time and SkyWest Airlines was last with 85.6%.
Over 24 months, Tuesday was the most reliable day (93% on time) and November the worst month (82%).
The cancellation rate was 0.5% (US average 1.8%).
SAT 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 |
|---|---|---|---|---|
| United Airlines | 88.0% | 100 min | 0.0% | 83 |
| SkyWest Airlines | 85.6% | 110 min | 0.6% | 351 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAT to SFO
On-time arrival % by scheduled departure hour (local time), 944 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 90.3% | 0.0% | 238 |
| 7am–8am | 90.2% | 0.0% | 306 |
| 8am–9am | 80.6% | 0.0% | 36 |
| 9am–10am | Limited data | 20 | |
| 3pm–4pm | 84.0% | 1.2% | 171 |
| 5pm–6pm | 84.4% | 0.9% | 110 |
| 6pm–7pm | Limited data | 26 | |
| 7pm–8pm | 83.8% | 0.0% | 37 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAT 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) | Limited data | 25 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 76.7% | -10.7 pts | 2.3% | 44 |
| Summer peak (Jun 15 - Aug 15) | 91.9% | +4.5 pts | 0.0% | 124 |
| All other days | 87.4% | — | 0.3% | 751 |
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).