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Cheap flights from Denver to San Francisco from £51

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
21 Feb — 28 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Denver to San Francisco

Enter your travel dates to find the best prices.

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 22 January 2026.

Wed 4/321:50
DEN
-
SFO
1 stop10h 30m
Frontier
Wed 11/321:04
SFO
-
DEN
Nonstop2h 33m
Frontier
Deal found 20/1£73
Wed 25/218:45
DEN
-
SFO
1 stop6h 14m
Multiple Airlines
Fri 27/206:15
SFO
-
DEN
Nonstop2h 47m
Multiple Airlines
Deal found 21/1£80
Sun 8/322:30
DEN
-
SFO
Nonstop2h 59m
Frontier
Sun 15/306:00
SFO
-
DEN
Nonstop2h 47m
Frontier
Deal found 22/1£80
Wed 25/222:49
DEN
-
SFO
1 stop9h 59m
Frontier
Fri 27/220:18
SFO
-
DEN
1 stop10h 36m
Frontier
Deal found 21/1£95
Wed 25/207:45
DEN
-
SFO
Nonstop2h 55m
United Airlines
Sat 28/206:50
SFO
-
DEN
Nonstop2h 37m
United Airlines
Deal found 20/1£109
Tue 7/418:20
DEN
-
SFO
1 stop5h 32m
Alaska Airlines
Tue 14/406:35
SFO
-
DEN
1 stop9h 49m
Alaska Airlines
Deal found 21/1£112
Wed 4/318:45
DEN
-
SFO
1 stop6h 14m
Hawaiian Airlines
Wed 11/311:34
SFO
-
DEN
1 stop8h 49m
Hawaiian Airlines
Deal found 20/1£112
Wed 22/420:25
DEN
-
SFO
Nonstop2h 45m
Southwest
Tue 28/407:40
SFO
-
DEN
2 stops8h 30m
Southwest
Deal found 21/1£113
Wed 25/206:30
DEN
-
SFO
1 stop6h 35m
Southwest
Wed 25/215:15
SFO
-
DEN
1 stop5h 55m
Southwest
Deal found 21/1£117
Wed 25/210:40
DEN
-
SFO
1 stop4h 40m
Southwest
Wed 4/307:40
SFO
-
DEN
2 stops7h 10m
Southwest
Deal found 20/1£118
Tue 14/418:20
DEN
-
SFO
1 stop5h 32m
Alaska Airlines
Mon 20/409:59
SFO
-
DEN
1 stop12h 57m
Alaska Airlines
Deal found 21/1£119
Tue 24/206:30
DEN
-
SFO
1 stop6h 35m
Southwest
Tue 3/310:00
SFO
-
DEN
2 stops7h 00m
Southwest
Deal found 20/1£121

Find 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 22 January 2026.

Round-trip from

£73

One-way from

£51

Popular in

July

Cheapest in

February

Average price

£164
Frontier
  • Frontier
  • 4/3-11/3
  • 1 total stop
  • 13h 03m total
  • Denver to San Francisco
Search Deals
Southwest
  • Southwest
  • 24/2
  • Nonstop
  • 2h 55m total
  • Denver to San Francisco
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 858,174 searches. Data last updated 22 January 2026.
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 15/4

18:20-22:52

1 stop5h 32m

San Francisco

Tue 21/4

06:35-17:24

1 stop9h 49m

£112

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 8/4

18:20-22:52

1 stop5h 32m

San Francisco

Tue 14/4

06:35-17:24

1 stop9h 49m

£112

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 21/4

18:20-22:52

1 stop5h 32m

San Francisco

Wed 29/4

08:20-18:25

1 stop9h 05m

£121

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 8/4

18:20-22:52

1 stop5h 32m

San Francisco

Thu 16/4

06:35-17:24

1 stop9h 49m

£127

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Mon 27/4

19:05-23:48

1 stop5h 43m

San Francisco

Tue 5/5

11:10-18:25

1 stop6h 15m

£136

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 5/5

13:02-23:48

1 stop11h 46m

San Francisco

Mon 11/5

08:20-18:25

1 stop9h 05m

£136

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Mon 6/4

18:20-22:52

1 stop5h 32m

San Francisco

Tue 14/4

06:35-17:24

1 stop9h 49m

£136

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 25/2

12:30-23:04

2 stops11h 34m

San Francisco

Thu 5/3

05:55-23:25

1 stop16h 30m

£141

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 22/4

05:30-14:05

2 stops9h 35m

San Francisco

Sat 25/4

14:57-23:32

1 stop7h 35m

£141

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 19/2

05:30-15:51

2 stops11h 21m

San Francisco

Thu 26/2

10:20-17:27

1 stop6h 07m

£141

Flights are sorted by cheapest return flights first.

Deals found on 22/1

Showing 1-10 of 23 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 16 January 2026.

The best time to book flights from Denver to San Francisco is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 £28). Flying from Denver to San Francisco in August is currently the most expensive (average of £92). 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 22 January 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 82% on flights from Denver to San Francisco by exploring options for tickets in the evening.

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?

    This flight path from Denver Intl to San Francisco was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    For as low as £112, Alaska Airlines can have you in San Francisco from Denver in 5h 32m. The distance between Denver and San Francisco is about 964 mi. 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?

    The top 3 most reliable airlines when flying from Denver to San Francisco are Air China (91%), Air Canada (79%) and Frontier (79%).

  • 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 £28). Flying from Denver to San Francisco in August is currently the most expensive (average of £92). 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
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale
Pacific Grove

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.
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Denver to San Diego flights
Denver to Santa Ana flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find Denver to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Denver to San Francisco for you. Better yet — we are completely free to use.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Denver to San Francisco, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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