Cheap flights from St. Louis, MO to San Francisco, CA
Flights starting at $87. Choose between United Airlines, American Airlines, or Delta Air Lines to find the best price.
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Tips to know when travelling to San Francisco
Cheapest one-way trip | $110 |
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Cheapest nonstop round-trip | $201 |
Cheapest round-trip | $197 |
Average round-trip | $332 |
Includes rare itinerary | Travel hack |
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Check-in for a flight from St. Louis to San Francisco
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
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United Airlines | UAL | UA | Yes | No |
American Airlines | AAL | AA | Yes | No |
Delta Air Lines | DAL | DL | Yes | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | 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

Most travelers from St Louis, STL can enter San Francisco, SFO.
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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.
Frequently asked questions
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Airports near St. Louis
- St. Louis Lambert International
- General Wayne A. Downing Peoria International
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- Waynesville-St. Robert Regional
- Cape Girardeau Regional
- Central Illinois Regional
- Evansville Regional
- Barkley Regional
- Williamson County Regional
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