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Cheap flights from Denver to San Francisco from $121

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
7 Sep — 14 Sep1
1 adult

Cheapflights Tip: The best prices from Denver Intl to San Francisco are usually found in February or October, booked 81 days in advance, depart on a Monday or Tuesday and return on a Saturday

Cheap flight deals from Denver to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 2 September 2025.

Round-trip from

$185

One-way from

$121

Popular in

July

Cheapest in

February

Average price

$270
Frontier
  • Frontier
  • 15/10-22/10
  • 1 total stop
  • 28h 28m total
  • Denver to San Francisco
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United Airlines
  • United Airlines
  • 8/11
  • Nonstop
  • 2h 50m total
  • Denver to San Francisco
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($112 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Denver to San Francisco

Cheapest flights from Denver to San Francisco
Explore the most affordable flight options available from Denver to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 September 2025.

Wed 15/1008:00DEN - SFO
1 stop25h 44mFrontier
Wed 22/1006:34SFO - DEN
Nonstop2h 44mFrontier
Deal found 31/8$185
Thu 13/1107:45DEN - SFO
Nonstop2h 48mFrontier
Thu 13/1118:33SFO - DEN
1 stop8h 26mFrontier
Deal found 1/9$191
Tue 7/1021:30DEN - SFO
Nonstop2h 35mSouthwest
Wed 8/1008:30SFO - DEN
Nonstop2h 30mSouthwest
Deal found 2/9$240
Sun 19/1006:03DEN - SFO
Nonstop2h 42mUnited Airlines
Sat 25/1020:52SFO - DEN
Nonstop2h 37mUnited Airlines
Deal found 31/8$270
Sat 27/909:35DEN - SFO
Nonstop2h 42mUnited Airlines
Sat 27/918:40SFO - DEN
Nonstop2h 37mUnited Airlines
Deal found 30/8$301
Thu 11/1218:59DEN - SFO
1 stop5h 49mAlaska Airlines
Mon 15/1221:57SFO - DEN
1 stop20h 27mAlaska Airlines
Deal found 1/9$324
Fri 26/921:35DEN - SFO
Nonstop2h 35mSouthwest
Tue 30/905:55SFO - DEN
Nonstop2h 30mSouthwest
Deal found 2/9$331
Thu 11/1215:42DEN - SFO
1 stop9h 17mHawaiian Airlines
Mon 15/1218:13SFO - DEN
1 stop4h 46mHawaiian Airlines
Deal found 30/8$345
Mon 3/1116:55DEN - SFO
Nonstop2h 40mSouthwest
Thu 6/1115:45SFO - DEN
1 stop4h 45mSouthwest
Deal found 2/9$347

Cheapflights Fare Finder

 
Customise your flight search to find flights from Denver to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 2 September 2025.
Use the filters below to find and compare flights from Denver to San Francisco that are best for you.

Fly from

Denver

Fly to

San Francisco

Route

Depart

Return

Price

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 15/10

08:00-08:44

1 stop25h 44m

San Francisco

Wed 22/10

06:34-10:18

Nonstop2h 44m

$185

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 13/11

07:45-09:33

Nonstop2h 48m

San Francisco

Thu 13/11

18:33-03:59

1 stop8h 26m

$191

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 7/10

21:30-23:05

Nonstop2h 35m

San Francisco

Wed 8/10

08:30-12:00

Nonstop2h 30m

$240

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 8/11

14:55-16:35

Nonstop2h 40m

San Francisco

Tue 11/11

08:20-11:50

Nonstop2h 30m

$240

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 11/10

17:52-19:35

Nonstop2h 43m

San Francisco

Tue 14/10

06:35-10:15

Nonstop2h 40m

$270

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 11/10

17:52-19:35

Nonstop2h 43m

San Francisco

Wed 15/10

05:05-08:40

Nonstop2h 35m

$270

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 7/10

21:30-23:05

Nonstop2h 35m

San Francisco

Thu 9/10

05:00-08:30

Nonstop2h 30m

$270

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 4/10

06:03-07:45

Nonstop2h 42m

San Francisco

Sun 12/10

06:35-10:15

Nonstop2h 40m

$270

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sun 2/11

07:45-09:30

Nonstop2h 45m

San Francisco

Tue 4/11

08:20-11:50

Nonstop2h 30m

$270

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sun 19/10

06:03-07:45

Nonstop2h 42m

San Francisco

Sat 25/10

20:52-00:29

Nonstop2h 37m

$270

Flights are sorted by cheapest return flights first.

Deals found on 2/9

Showing 1-10 of 19 results
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Best time to book a flight from Denver to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Denver with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to San Francisco

How far ahead should I book a flight from Denver to San Francisco?

Use this chart to determine the optimal time to book a return flight from Denver to San Francisco. Price data was last updated on 29 August 2025.

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Denver to San Francisco?

Currently, March is the cheapest month in which you can book a flight from Denver to San Francisco (average of $876). Flying from Denver to San Francisco in December is currently the most expensive (average of $1,375). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to SFO?

Find hourly flight availability from Denver to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 September 2025.

When flying from Denver to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 2% versus a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Denver to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Denver to San Francisco flight route?

    Within the past month, 15 users have taken a look at flights from Denver Intl to San Francisco.

  • How long is the flight from Denver to San Francisco?

    There are many flights that can get you from Denver to San Francisco in 2h 40m. Fly via Frontier, Southwest, or United Airlines to get the fastest option. The distance between Denver and San Francisco is about 1551 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most reliable airlines from Denver to San Francisco?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to San Francisco on time: Emirates (84%), Air China (79%), ANA (74%).

  • Can I find deals for flights from Denver to San Francisco that include hotel bookings?

    Yes. In addition to deals on Denver to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Denver to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to San Francisco.

  • Can I find deals for business class flights from Denver to San Francisco?

    Yes. Cheapflights offers flight deals from Denver to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to San Francisco?

    Currently, March is the cheapest month in which you can book a flight from Denver to San Francisco (average of $876). Flying from Denver to San Francisco in December is currently the most expensive (average of $1,375). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Sausalito
Santa Cruz
Los Gatos
Mountain View
Davis
Emeryville
Stanford
Milpitas
Daly City

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Denver to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Los Angeles flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Denver to San Francisco?

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Why should you use Cheapflights to find cheap flight tickets from Denver to San Francisco?

Millions of users choose and trust Cheapflights to book the best flight deals from Denver to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Denver to San Francisco with no change fees?

Yes, we can. To see specific flights from Denver to San Francisco with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Denver to San Francisco become cheaper?

Yes! Start tracking prices for Denver to San Francisco flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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