Cheap flights from San Francisco to Denver
Cheapest current fares: $65 in September 2026, 1,554 km direct flight in ~1h 50m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Francisco (SFO) to Denver (DEN). Refreshed daily.
San Francisco (SFO) → Denver (DEN)
- September 2026 $65
- August 2026 $149
Frequently asked questions
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What is the cheapest month to fly from San Francisco to Denver?
Based on current 6-month forward fare data, September 2026 is the cheapest month to fly from San Francisco (SFO) to Denver (DEN), with fares starting from $65.
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What is the lowest current fare from SFO to DEN?
The lowest currently-listed fare from San Francisco (SFO) to Denver (DEN) is $65 on 2026-09-10.
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How long is the flight from San Francisco to Denver?
Direct flights from SFO to DEN cover approximately 1,554 km (966 miles), with an estimated flight time of 1h 50m. Operating airlines: F9, UA, WN.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.