SFO to SAT flight delays & on-time performance
Nonstop flights from San Francisco International Airport to San Antonio International Airport · 1,482 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SFO or SAT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Francisco (SFO) to San Antonio (SAT) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.2% were cancelled, and 9% arrived an hour or more late.
- United Airlines was the most punctual airline here (79% on time); SkyWest Airlines was the least (77%).
- Departures scheduled around 9am did best (80% on time); around 8am did worst (76%).
- Saturday was the most reliable day to fly (86% on time) and Friday the least (73%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (47%).
Which airline is most on time from SFO to SAT?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 79% | 0.0% | 17 min | 9.9% | 82 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 77% | 0.3% | 18 min | 8.6% | 352 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am76%25 flights
- 9am80%42 flights
- 11am77%65 flights
- 1pm80%10 flights
- 4pm76%148 flights
- 6pm77%102 flights
- 11pm78%38 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%1.5% cancelled
- Tuesday76%0.0% cancelled
- Wednesday77%0.0% cancelled
- Thursday73%0.0% cancelled
- Friday73%0.0% cancelled
- Saturday86%0.0% cancelled
- Sunday76%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)47%
- Late-arriving aircraft31%
- Air traffic control & airport congestion16%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Extreme weather0%
- Security0%
SFO to SAT: common questions
- How often are SFO to SAT flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Francisco to San Antonio cancelled?
- 0.2% of scheduled flights were cancelled (1 of 434).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 75 min behind schedule on average, and 8.9% of flights were an hour or more late.
- How long is taxi time at SFO?
- Flights on this route spent 26 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAT to SFO — 86% on time
More flights from San Francisco
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SFO → SAT, nonstop flights by US airlines that report to the DOT. How we calculate this.