San Antonio to San Francisco flights from $339
Flights starting at $339. Choose between United Airlines, American Airlines, or Frontier Airlines to find the best price.
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Tips to know when travelling to San Francisco
$339 | |
$328 | |
$187 | |
$351 | |
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Weekly direct flights
Mondays | Tuesdays | Wednesdays | Thursdays | Fridays | Saturdays | Sundays | |
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Direct flights | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
Check-in for a flight from San Antonio to San Francisco
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
United Airlines | UAL | UA | Yes | No |
American Airlines | AAL | AA | Yes | No |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Delta Air Lines | DAL | DL | Yes | Opens 24 days before flight Closes 1 hours before flight |
Alaska Airlines | ASA | AS | Yes | Opens 24 days before flight Closes 1 hours before flight |
United States COVID-19 travel restrictions

Latest COVID-19 restrictions
United States
Travel is allowed
No proof of negative pre-departure COVID-19 test results required
No quarantine required

Most travelers from San Antonio, SAT with proof of full COVID-19 vaccination can enter San Francisco, SFO, but there are restrictions.
Departure
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Return
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Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
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