Cheap Flights from Denver to San Francisco
Compare cheap flights from Denver (DEN) to San Francisco (SFO) on Tripile, with fares from around $79. The route takes about 2h 30m, and May is often the best month for low prices.
Airlines on This Route
Popular airlines flying Denver to San Francisco include United, Southwest, Frontier, Spirit. Compare their schedules, baggage rules, and prices side by side, then book the option that fits your trip.
With 4 carriers commonly serving DEN to SFO, departure times are spread across the day, so it is worth checking early-morning and late-evening flights when you want the lowest fare on a 2h 30m sector.
When to Book DEN to SFO
Fares on this route start from around $79, and May typically brings the lowest prices. Search with flexible dates to compare a whole month at once, check the return leg from San Francisco to Denver in the same search, and review the fare rules before paying so you know what a change or cancellation would cost.