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Cheap flights from San Francisco to Denver from £70

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
26 May — 2 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to Denver Intl are usually found in October or September, booked 36 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from San Francisco to Denver

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Denver
Explore the most affordable flight options available from San Francisco to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 April 2026.

Wed 20/505:00
SFO
-
DEN
Nonstop2h 40m
United Airlines
Wed 27/505:20
DEN
-
SFO
Nonstop2h 38m
United Airlines
Deal found 23/4£148
Sun 7/620:41
SFO
-
DEN
1 stop11h 57m
Frontier
Sun 14/623:49
DEN
-
SFO
1 stop11h 45m
Frontier
Deal found 23/4£156
Tue 18/806:00
SFO
-
DEN
1 stop4h 54m
Delta
Wed 26/819:15
DEN
-
SFO
1 stop4h 57m
Delta
Deal found 23/4£163
Mon 21/918:28
SFO
-
DEN
Nonstop2h 43m
United Airlines
Wed 23/909:35
DEN
-
SFO
Nonstop2h 47m
United Airlines
Deal found 23/4£165
Tue 15/917:30
SFO
-
DEN
Nonstop2h 30m
Southwest
Tue 29/915:45
DEN
-
SFO
Nonstop2h 35m
Southwest
Deal found 22/4£168
Tue 19/517:41
SFO
-
DEN
1 stop5h 08m
Alaska Airlines
Wed 20/506:40
DEN
-
SFO
1 stop5h 09m
Alaska Airlines
Deal found 24/4£175
Wed 19/813:35
SFO
-
DEN
1 stop4h 35m
Delta
Thu 27/812:59
DEN
-
SFO
1 stop5h 51m
Delta
Deal found 23/4£180
Wed 13/505:00
SFO
-
DEN
Nonstop2h 40m
United Airlines
Mon 18/505:20
DEN
-
SFO
Nonstop2h 50m
United Airlines
Deal found 22/4£184
Thu 4/605:00
SFO
-
DEN
Nonstop2h 35m
United Airlines
Tue 9/606:00
DEN
-
SFO
Nonstop2h 38m
United Airlines
Deal found 23/4£185

Find flight deals from San Francisco to Denver

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Denver (DEN). 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 26 April 2026.

Round-trip from

£148

One-way from

£70

Popular in

March

Cheapest in

October

Average price

£214

Good one-way deal

£183 or less
United Airlines
  • United Airlines
  • 15/9-29/9
  • Nonstop
  • 5h 30m total
  • San Francisco to Denver
Search Deals
Frontier
  • Frontier
  • 10/8
  • Nonstop
  • 2h 41m total
  • San Francisco to Denver
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from San Francisco to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Denver 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 26 April 2026.
Use the filters below to find and compare flights from San Francisco to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 30/6

06:00-23:45

1 stop16h 45m

Denver Intl

Thu 2/7

18:41-23:59

1 stop6h 18m

£209

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 17/9

11:15-14:55

Nonstop2h 40m

Denver Intl

Mon 21/9

06:00-09:20

1 stop4h 20m

£220

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Mon 25/5

16:55-23:44

1 stop5h 49m

Denver Intl

Wed 3/6

18:30-22:23

1 stop4h 53m

£249

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 30/6

16:25-22:35

1 stop5h 10m

Denver Intl

Sat 4/7

07:50-14:00

2 stops7h 10m

£253

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 30/5

15:00-23:59

2 stops7h 59m

Denver Intl

Wed 3/6

06:40-10:49

1 stop5h 09m

£253

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 23/5

05:40-09:15

Nonstop2h 35m

Denver Intl

Tue 26/5

20:25-22:10

Nonstop2h 45m

£278

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 13/6

05:00-13:50

2 stops7h 50m

Denver Intl

Thu 18/6

06:15-11:20

2 stops6h 05m

£294

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Fri 5/6

13:17-23:49

2 stops9h 32m

Denver Intl

Mon 8/6

19:51-09:33

1 stop14h 42m

£297

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 20/5

11:55-17:35

1 stop4h 40m

Denver Intl

Wed 27/5

05:30-12:29

2 stops7h 59m

£298

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 18/6

12:00-19:40

1 stop6h 40m

Denver Intl

Sat 20/6

06:35-15:10

2 stops9h 35m

£301

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from San Francisco to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from San Francisco 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 San Francisco to Denver

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

The price you pay for your flight from San Francisco to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 35 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, October is the cheapest month in which you can book a flight from San Francisco to Denver (average of £166). Flying from San Francisco to Denver in March is currently the most expensive (average of £230). 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 SFO to DEN?

Find hourly flight availability from San Francisco to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 April 2026.

When flying from San Francisco to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 81% versus a flight at midday.

How much does it cost for a return flight from San Francisco to Denver?

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated 26 April 2026.
See what other customers who have flown with Frontier from San Francisco to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Frontier
5.7
Fair
2,976 reviews
Check prices

Food

4.5

Crew

6.6

Overall

5.7

Boarding

5.9

Comfort

5.4

Entertainment

4.3

Reviews

1 / 20
2.0
Mediocre

Shri,Feb 2026

MCO - DEN

Plane was dirty, food strewn all over the floor. The flight attendant was dozing in her chair for most of the flight. Even the announcements sounded so unenthusiastic. The seats are old and dirty, the seat belts look worn out.
Frontier
5.7
Fair
2,976 reviews
Frontier
5.7
Fair
2,976 reviews
Check prices

Food

4.5

Crew

6.6

Overall

5.7

Boarding

5.9

Comfort

5.4

Entertainment

4.3

Reviews

1 / 20
2.0
Mediocre

Shri,Feb 2026

MCO - DEN

Plane was dirty, food strewn all over the floor. The flight attendant was dozing in her chair for most of the flight. Even the announcements sounded so unenthusiastic. The seats are old and dirty, the seat belts look worn out.

Related info for your journey

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

  • What airports do I use to fly from San Francisco to Denver?

    If you book a flight from San Francisco to Denver, you will be flying from San Francisco to Denver Intl. Flights to Denver Intl (DEN) from San Francisco (SFO) take 2h 30m for a nonstop flight. There are 38 flights from San Francisco to Denver per day from 1 airline.

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

    This flight path from San Francisco to Denver Intl was viewed by 21 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 San Francisco to Denver?

    There are many flights that can get you from San Francisco to Denver in 2h 40m. Fly via Southwest, Delta, or Alaska Airlines to get the fastest option. Airlines will cover a distance of 964 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from San Francisco to Denver round-trip?

    Flying on Frontier is currently your cheapest option to Denver, with prices starting at £104. You may be able to fly from San Francisco to Denver for 46% less than the average price by searching for this airline.

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

    Before booking your flight to Denver from San Francisco, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Air New Zealand (87%), Virgin Australia( 85%).

  • What are the cheapest flights from San Francisco to Denver?

    Looking at all options, your cheapest flight can be booked for £163. While the most popular route (San Francisco - Denver Intl) can be booked for £284 on average, our data indicates £193 when flying from San Francisco to Denver.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Denver 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 San Francisco to Denver?

    Currently, October is the cheapest month in which you can book a flight from San Francisco to Denver (average of £166). Flying from San Francisco to Denver in March is currently the most expensive (average of £230). 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

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Alternative routes for San Francisco to Denver

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

Top airline flying from San Francisco to Denver

Discover the top airline that operate flights from San Francisco to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 April 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£104Average£134FlexibilityNo cancel feeOn-time62%
Search Frontier 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 San Francisco to Denver?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Francisco to Denver. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Denver from San Francisco.

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

Yes! Cheapflights helps users easily find flights from San Francisco to Denver with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Denver from San Francisco today and book when prices fit your budget.

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