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Cheap flights from San Francisco to Denver from £89

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
26 Aug — 2 Sep1
1 adult
1 adult, Economy, 0 bags

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 27 July 2026.

Wed 23/909:27
SFO
-
DEN
1 stop8h 59m
Alaska Airlines
Tue 29/920:06
DEN
-
SFO
1 stop13h 40m
Alaska Airlines
Deal found 23/7£178
Sun 6/910:32
SFO
-
DEN
1 stop7h 54m
Alaska Airlines
Thu 10/913:43
DEN
-
SFO
1 stop6h 23m
Alaska Airlines
Deal found 23/7£182
Sat 5/918:25
SFO
-
DEN
1 stop17h 24m
Delta
Thu 10/908:06
DEN
-
SFO
1 stop16h 34m
Delta
Deal found 23/7£186
Sat 19/907:08
SFO
-
DEN
1 stop13h 05m
Alaska Airlines
Tue 22/913:43
DEN
-
SFO
1 stop6h 23m
Alaska Airlines
Deal found 23/7£188
Sat 5/918:25
SFO
-
DEN
1 stop17h 24m
Delta
Fri 11/919:55
DEN
-
SFO
1 stop13h 34m
Delta
Deal found 23/7£190
Thu 3/905:00
SFO
-
DEN
Nonstop2h 40m
United Airlines
Mon 7/905:00
DEN
-
SFO
Nonstop2h 41m
United Airlines
Deal found 22/7£193
Thu 29/1016:43
SFO
-
DEN
1 stop6h 16m
Alaska Airlines
Fri 30/1009:45
DEN
-
SFO
1 stop6h 06m
Alaska Airlines
Deal found 22/7£194
Thu 15/1008:20
SFO
-
DEN
1 stop8h 41m
Alaska Airlines
Sun 18/1018:59
DEN
-
SFO
1 stop15h 38m
Alaska Airlines
Deal found 24/7£195
Tue 1/912:47
SFO
-
DEN
Nonstop2h 50m
United Airlines
Sun 6/921:09
DEN
-
SFO
Nonstop2h 46m
United Airlines
Deal found 26/7£197
Thu 3/909:30
SFO
-
DEN
1 stop13h 22m
Delta
Sat 5/913:44
DEN
-
SFO
1 stop9h 31m
Delta
Deal found 27/7£197
Sat 5/917:17
SFO
-
DEN
1 stop18h 03m
Alaska Airlines
Tue 8/906:17
DEN
-
SFO
1 stop10h 42m
Alaska Airlines
Deal found 24/7£199
Sat 22/812:15
SFO
-
DEN
1 stop6h 55m
Southwest
Sat 29/819:45
DEN
-
SFO
Nonstop2h 40m
Southwest
Deal found 25/7£200

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 27 July 2026.

Round-trip from

£178

One-way from

£89

Popular in

June

Cheapest in

February

Average price

£264
Alaska Airlines
  • Alaska Airlines
  • 21/10-24/10
  • 2 total stops
  • 11h 11m total
  • San Francisco to Denver
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 21/1
  • 1 total stop
  • 4h 34m total
  • San Francisco to Denver
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£37 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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 27 July 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

Thu 3/9

08:25-23:56

1 stop14h 31m

Denver Intl

Tue 8/9

20:06-08:46

1 stop13h 40m

£195

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 2/9

05:50-14:00

2 stops7h 10m

Denver Intl

Wed 9/9

07:35-14:05

1 stop7h 30m

£220

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 8/9

05:50-14:00

2 stops7h 10m

Denver Intl

Tue 15/9

12:35-19:15

2 stops7h 40m

£240

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Fri 13/11

10:40-16:45

1 stop5h 05m

Denver Intl

Mon 16/11

15:45-21:25

2 stops6h 40m

£254
Fastest return journey

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 15/8

12:40-16:05

Nonstop2h 25m

Denver Intl

Mon 17/8

09:35-11:15

Nonstop2h 40m

£266

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Fri 25/9

14:00-20:15

1 stop5h 15m

Denver Intl

Mon 28/9

15:10-20:30

2 stops6h 20m

£273

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Mon 12/10

16:59-23:59

1 stop6h 00m

Denver Intl

Wed 14/10

13:00-23:56

2 stops11h 56m

£278

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Fri 11/9

10:25-18:45

1 stop7h 20m

Denver Intl

Sun 13/9

09:15-15:00

2 stops6h 45m

£287

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 29/8

07:08-18:32

2 stops10h 24m

Denver Intl

Mon 7/9

20:06-08:46

1 stop13h 40m

£291

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Mon 10/8

17:08-22:55

1 stop4h 47m

Denver Intl

Tue 25/8

12:54-23:59

2 stops12h 05m

£293

Flights are sorted by cheapest return flights first.

Deals found on 22/7

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 70 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, February is the cheapest month in which you can book a flight from San Francisco to Denver (average of £176). Flying from San Francisco to Denver in June is currently the most expensive (average of £291). 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 27 July 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 50% versus a flight in the afternoon.

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

Airfare is typical for this route at the moment.

San Francisco to Denver flights typically cost between £143 and £286 in September.
The cheapest return price found within the last 5 days was £178 on Alaska Airlines (23 Sept–29 Sept).

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 27 July 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
5.6
Fair
2,757 reviews
Check prices

Overall

5.6

Entertainment

4.3

Boarding

5.9

Crew

6.6

Food

4.5

Comfort

5.4

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
5.6
Fair
2,757 reviews
Frontier
5.6
Fair
2,757 reviews
Check prices

Overall

5.6

Entertainment

4.3

Boarding

5.9

Crew

6.6

Food

4.5

Comfort

5.4

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 25m for a nonstop flight. There are 50 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 7 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 4h 55m. Fly via Delta or Southwest 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 £115. 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: Asiana Airlines (88%), Avianca (85%), Emirates( 80%).

  • 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, February is the cheapest month in which you can book a flight from San Francisco to Denver (average of £176). Flying from San Francisco to Denver in June is currently the most expensive (average of £291). 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 27 July 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£115Average£141FlexibilityNo 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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