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San Francisco to Denver Flights — Fares from $218.00 | SFO–DEN

Compare the cheapest San Francisco (SFO) to Denver (DEN) fares found by our live flight search, then book online or over the phone with our travel experts.

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Adults
12+
1
Children
2–11
0
Infants
Under 2
0
Cabin
🏷️
Save up to 40% with unpublished phone fares
Consolidator deals on selected San Francisco → Denver flights that do not appear in online search results. The live fares below are bookable right now — or call to check for an unpublished fare on your dates.
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One-way fares San Francisco → Denver

showing indicative fares · loading live prices…
Frontier
Frontier CHEAPEST
SFO → DEN · Economy
lowest fare seen on this route
$364.00
$218.40
Select
Alaska Airlines
Alaska Airlines
SFO → DEN · Economy
lowest fare seen on this route
$554.40
$332.64
Select
Southwest
Southwest
SFO → DEN · Economy
lowest fare seen on this route
$621.00
$372.60
Select
United Airlines
United Airlines
SFO → DEN · Economy
lowest fare seen on this route
$666.00
$399.60
Select
Delta Air Lines
Delta Air Lines
SFO → DEN · Economy
lowest fare seen on this route
$734.38
$440.63
Select
American Airlines
American Airlines
SFO → DEN · Economy
lowest fare seen on this route
$734.38
$440.63
Select
See all flights & times → Prices per adult, one way, incl. taxes & fees. Availability changes constantly.
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Live fares we can book on SFO–DEN

Lowest fare found per airline on the SFO → DEN route, with our discounted phone-deal price.

AirlineCabin Found fareOur discounted fare Fare found on
Frontier Frontier Economy $364.00 $218.40 Oct 16, 2026 Book
Alaska Airlines Alaska Airlines Economy $554.40 $332.64 Oct 16, 2026 Book
Southwest Southwest Economy $621.00 $372.60 Oct 16, 2026 Book
United Airlines United Airlines Economy $666.00 $399.60 Oct 16, 2026 Book
Delta Air Lines Delta Air Lines Economy $734.38 $440.63 Oct 16, 2026 Book
American Airlines American Airlines Economy $734.38 $440.63 Oct 16, 2026 Book
JetBlue JetBlue Economy $30,097.39 $18,058.43 Oct 16, 2026 Book

Discounted fares are negotiated phone deals from our vendor network and may not appear in online search results — call 1-856-513-6369 to lock one in. Fares were found on the dates shown, are per person in USD, and change with availability.

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FlyLemo is an independent travel agency — call 1-856-513-6369 or use the search above to compare live fares on this route. See our terms, privacy policy, refund policy and service fees for full details, or contact us any time.

Page updated October 16, 2026 · fare data refreshed automatically from live flight searches.