Cheap flights from San Francisco to Denver

Flights overview

Useful information for finding cheap flights from San Francisco to Denver and booking your next trip
Cheapest round-trip flights $128
Frontier Nonstop 3 hr Sat, May 9 — Mon, May 11
The cheapest round-trip flight from San Francisco to Denver is currently $128
Cheapest one-way flight $44
Frontier Nonstop 3 hr Wed, May 13
The cheapest one-way flight from San Francisco to Denver is currently $44
Last-minute weekend getaway $236
Frontier 1 stop 11 hr Thu, Apr 16 — Sun, Apr 19
The cheapest last-minute weekend getaway from San Francisco to Denver is currently $236
Cheapest business class flights $356
Frontier Nonstop 3 hr Sat, May 9 — Mon, May 11
The cheapest business class round-trip flight from San Francisco to Denver is currently $356
Fastest flight 2 hr 30 min The fastest nonstop flight from San Francisco to Denver takes 2 hr 30 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from San Francisco to Denver is typically January. The most expensive month to fly is typically July.
January
Cheapest
Typical prices: $80–250
July
Most expensive
Typical prices: $160–280

Popular airlines from San Francisco to Denver

  • United
    Nonstop
    from $237
    Typical price: $175–375
    63 weekly nonstop flights
    SFO - DEN Every day
    675 weekly connecting flights
    SFO - DEN Every day
  • Southwest
    Nonstop
    from $257
    Typical price: $195–420
    24 weekly nonstop flights
    SFO - DEN Every day
    270 weekly connecting flights
    SFO - DEN Every day
  • Frontier
    Nonstop
    from $128
    Typical price: $105–240
    11 weekly nonstop flights
    SFO - DEN Every day
    22 weekly connecting flights
    SFO - DEN Every day
  • American
    from $317
    Typical price: $220–570
    128 weekly connecting flights
    SFO - DEN Every day
  • Delta
    from $277
    Typical price: $220–550
    99 weekly connecting flights
    SFO - DEN Every day
  • Alaska
    from $297
    Typical price: $240–570
    48 weekly connecting flights
    SFO - DEN Every day

Popular airports near San Francisco

  • San Francisco International Airport (SFO)
    San Francisco United States 19 min 11 mi
  • Oakland San Francisco Bay Airport (OAK)
    Oakland United States 27 min 11 mi
  • Sacramento International Airport (SMF)
    Sacramento United States 1 hr 34 min 78 mi
  • San Jose Mineta International Airport (SJC)
    San Jose United States 51 min 39 mi

Popular airports near Denver

  • Denver International Airport (DEN)
    Denver United States 38 min 19 mi
  • Colorado Springs Airport (COS)
    Colorado Springs United States 1 hr 27 min 66 mi
  • Eagle County Regional Airport (EGE)
    Vail United States 2 hr 19 min 103 mi
  • Centennial Airport (APA)
    Denver United States 27 min 14 mi

Frequently asked questions about flying from San Francisco to Denver

The cheapest flights from San Francisco to Denver are usually in January. Typical ticket prices in January range from $80 to $250.
The cheapest round-trip flight from San Francisco to Denver recently found on Google Flights was with Frontier from $128. The cheapest one-way flight was with Frontier from $44.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest United flight from San Francisco to Denver is $237, flying from May 16 to May 17.
  • The cheapest Southwest flight from San Francisco to Denver is $257, flying from May 9 to May 11.
  • The cheapest Frontier flight from San Francisco to Denver is $128, flying from May 9 to May 11.
  • The cheapest American flight from San Francisco to Denver is $317, flying from May 9 to May 11.
  • The cheapest Delta flight from San Francisco to Denver is $277, flying from May 9 to May 11.
  • The cheapest Alaska flight from San Francisco to Denver is $297, flying from May 30 to Jun 1.
The cheapest round-trip flight from San Francisco to Denver starts at $128 from Sat, May 9 to Mon, May 11. The cheapest one-way flight starts at $44 and departs on Wed, May 13.
2 hr 30 min is the shortest flight time from San Francisco to Denver.
Denver’s mild summer months (Jun–Aug) are a popular time for visitors exploring the city and nearby national parks. The ski season runs through winter (Nov–Mar). Major events include the National Western Stock Show & Rodeo (Jan) and A Taste of Colorado (Sep) food and arts festival.
It's easy to use Google Flights to find the cheapest days to fly from San Francisco to Denver.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from San Francisco to Denver really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from San Francisco to Denver.

In terms of nonstop flights, United is the most popular. United offers 63 nonstop flights and 675 connecting flights per week. United flies from San Francisco International Airport (SFO) to Denver International Airport (DEN) .

Other popular airlines flying from San Francisco to Denver are:
  • Southwest offers 24 nonstop flights and 270 connecting flights per week. Southwest flies from San Francisco International Airport (SFO) to Denver International Airport (DEN) .
  • Frontier offers 11 nonstop flights and 22 connecting flights per week. Frontier flies from San Francisco International Airport (SFO) to Denver International Airport (DEN) .
  • American offers 128 connecting flights per week. American flies from San Francisco International Airport (SFO) to Denver International Airport (DEN) .
  • Delta offers 99 connecting flights per week. Delta flies from San Francisco International Airport (SFO) to Denver International Airport (DEN) .
  • Alaska offers 48 connecting flights per week. Alaska flies from San Francisco International Airport (SFO) to Denver International Airport (DEN) .
The number of connecting flights refers to distinct flights with at least one stop between San Francisco and Denver.
The cheapest round-trip flight from San Francisco to Denver recently found on Google Flights was with Frontier from $128. The cheapest one-way flight was with Frontier from $44.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest United flight from San Francisco to Denver is $237, flying from May 16 to May 17.
  • The cheapest Southwest flight from San Francisco to Denver is $257, flying from May 9 to May 11.
  • The cheapest Frontier flight from San Francisco to Denver is $128, flying from May 9 to May 11.
  • The cheapest American flight from San Francisco to Denver is $317, flying from May 9 to May 11.
  • The cheapest Delta flight from San Francisco to Denver is $277, flying from May 9 to May 11.
  • The cheapest Alaska flight from San Francisco to Denver is $297, flying from May 30 to Jun 1.
United, Southwest and Frontier fly direct from San Francisco to Denver.
  • There are 63 United direct flights from San Francisco to Denver per week. Flights are available every day.
  • There are 24 Southwest direct flights from San Francisco to Denver per week. Flights are available every day.
  • There are 11 Frontier direct flights from San Francisco to Denver per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between San Francisco and Denver at price $236 is offered by Frontier from Thu, Apr 16 to Sun, Apr 19.
United, Southwest and Frontier fly direct from San Francisco to Denver.
  • There are 63 United direct flights from San Francisco to Denver per week. Flights are available every day.
  • There are 24 Southwest direct flights from San Francisco to Denver per week. Flights are available every day.
  • There are 11 Frontier direct flights from San Francisco to Denver per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from San Francisco to Denver on a daily basis.
The cheapest direct (nonstop) round-trip flights between San Francisco and Denver start at $128 from Sat, May 9 to Mon, May 11 with Frontier.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from San Francisco to Denver, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between San Francisco and Denver start at $356 from Sat, May 9 to Mon, May 11 with Frontier.
The cheapest economy class round-trip flights between San Francisco and Denver start at $128 from Sat, May 9 to Mon, May 11.
To book business class trips from San Francisco to Denver, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between San Francisco and Denver starts at $236 from Thu, Apr 16 to Sun, Apr 19 with Frontier.
The cheapest last-minute deal between San Francisco and Denver at price $236 is offered by Frontier from Thu, Apr 16 to Sun, Apr 19.
To find last-minute flight deals from San Francisco to Denver, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

Search more flights

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