Cheap flights from San Francisco, CA to Denver, CO
Flights starting at $54. Choose between United Airlines, Frontier Airlines, or Linear Air to find the best price.
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Tips to know when travelling to Denver
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Weekly direct flights
Frontier Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
Check-in for a flight from San Francisco to Denver
|Name||Carrier code||IATA Code||Passport needed during booking||Online check-in available|
|Frontier Airlines||FFT||F9||No||Opens 24 days before flight|
Closes 1 hours before flight
|JetBlue Airways||JBU||B6||Yes||Opens 24 days before flight|
Closes 2 hours before flight
United States COVID-19 travel restrictions
Most travelers from San Francisco, SFO can enter Denver, DEN.
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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