Cheap flights from San Francisco to Cancun
Cheapest current fares: $164 in June 2026, 3,872 km direct flight in ~4h 33m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Francisco (SFO) to Cancun (CUN). Refreshed daily.
San Francisco (SFO) → Cancun (CUN)
- June 2026 $164
- July 2026 $183
Frequently asked questions
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What is the cheapest month to fly from San Francisco to Cancun?
Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from San Francisco (SFO) to Cancun (CUN), with fares starting from $164.
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What is the lowest current fare from SFO to CUN?
The lowest currently-listed fare from San Francisco (SFO) to Cancun (CUN) is $164 on 2026-06-20.
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How long is the flight from San Francisco to Cancun?
Direct flights from SFO to CUN cover approximately 3,872 km (2,406 miles), with an estimated flight time of 4h 33m. Operating airlines: AS, UA.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.