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Cheap flights from San Francisco to Denver

The cheapest round trip from San Francisco to Denver that travelers found recently is $229 with a carry-on: a $119 fare on Frontier plus about $110 for a carry-on both ways. It leaves Thu, Jan 21 and comes back Mon, Jan 25.

Live prices for Thu, Jan 21 to Mon, Jan 25

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$229Cheapest round trip, carry-on included (est.)
$498Typical round trip found recently
JanuaryCheapest month in the next few, from $229
100%Of these fares are nonstop

Cheapest trips travelers found recently

LeaveReturnAirlineAirportsStopsFareCarry-on (est.)TotalLive prices
Thu, Jan 21Mon, Jan 25FrontierSFO → DENNonstop$119+$110$229Live price
Fri, Oct 23Sun, Oct 25FrontierSFO → DENNonstop$388+$110$498Live price

Round-trip prices per person, from real fares travelers found in the last few days. Carry-on fees are our estimate for each airline, both ways. Prices change fast: check the live price before you book.

Cheapest month to fly

MonthCheapest tripFromLive prices
October 2026Fri, Oct 23 to Sun, Oct 25, 2 nights$498Live price
January 2027Thu, Jan 21 to Mon, Jan 25, 4 nights$229Live price

Bag fees on this route

What the airlines flying San Francisco to Denver usually charge for one bag each way. Budget airlines often sell the cheapest fares and charge the most for bags, so compare the total, not the fare.

AirlineCarry-on, each wayChecked bag, each way
Frontier$55$50

Our estimates: fees depend on the fare type and when you pay. Check the airline's own price when you book.

How these prices work

These are real round-trip fares that travelers found on Aviasales recently, not a live search, so they can change or sell out. Dipt adds an estimate of each airline's carry-on fee, so a cheap fare with expensive bags doesn't look cheaper than it is. "Live price" opens Dipt's live flight search for those dates, where you book with the airline or travel site you pick. Dipt may earn a commission when you book, at no extra cost to you (how Dipt makes money).

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