Cancún to San Francisco flights from $342
Flights starting at $342. Choose between United Airlines, Frontier Airlines, or VivaAerobus to find the best price.
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Tips to know when travelling to San Francisco
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Weekly direct flights
Mondays | Tuesdays | Wednesdays | Thursdays | Fridays | Saturdays | Sundays | |
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Direct flights | 2 | 3 | 2 | 3 | 2 | 3 | 3 |
United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
Alaska Airlines on Sundays.
Check-in for a flight from Cancún 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 |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
VivaAerobus | VIV | VB | Yes | Opens 72 days before flight Closes 4 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
AeroMéxico | AMX | AM | Yes | No |
United States COVID-19 travel restrictions

Latest COVID-19 restrictions
United States
Travel through the US land border is allowed for vaccinated travelers
Travel is allowed with restrictions for vaccinated travelers
No proof of negative pre-departure COVID-19 test results or recovery certificate
No quarantine for vaccinated travelers

Most travelers from Mexico with proof of full COVID-19 vaccination can enter San Francisco, SFO, but there are restrictions.
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Return
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Additional information |
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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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