Route
SAT → SFO
San Antonio International Airport San Francisco International Airport
1,482 miles
Return route SFO → SAT →
Alerts at SAT and SFO
How punctual is this route?
- On-time arrivals
- 85.1%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 112 min
- Flights arriving 15+ minutes late
- Flights tracked
- 434
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 36%
- Air traffic control & airport 34%
- Airline (crew, maintenance, cleaning) 30%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 94.3% | 35 |
| October 2025 | 82.1% | 56 |
| November 2025 | 89.8% | 49 |
| December 2025 | 87.0% | 47 |
| January 2026 | 62.5% | 8 |
| February 2026 | 81.2% | 17 |
| March 2026 | 93.9% | 34 |
| April 2026 | 78.0% | 51 |
| May 2026 | 80.0% | 45 |
| June 2026 | 83.3% | 30 |
| July 2026 | 93.5% | 31 |
| August 2026 | 80.6% | 31 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| SkyWest Airlines | 358 | 85.3% | 0.6% | 116 min |
| United Airlines | 76 | 84.2% | 0.0% | 91 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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