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Cheap flights from San Francisco to Denver from £54

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
17 Apr — 24 Apr1
1 adult

Cheapflights Tip: The best prices from San Francisco to Denver Intl are usually found in September or January, booked 24 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap 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 12 April 2025.

Round-trip from

£116

One-way from

£54

Popular in

December

Cheapest in

September

Average price

£152

Good round-trip deal

£327 or less

Good one-way deal

£156 or less
Southwest
  • Southwest
  • 5/5-8/5
  • 1 total stop
  • 9h 05m total
  • San Francisco to Denver
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United Airlines
  • United Airlines
  • 15/5
  • Nonstop
  • 2h 38m total
  • San Francisco to Denver
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Highest demand for flights based on searches. 5% potential increase in price (£6 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from San Francisco to Denver Intl.
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Price to beat on a one-way flight from San Francisco to Denver Intl.
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Find flight deals from San Francisco to Denver

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 12 April 2025.

Mon 5/505:10SFO - DEN
1 stop6h 20mSouthwest
Thu 8/510:20DEN - SFO
Nonstop2h 45mSouthwest
Deal found 11/4£116
Mon 5/511:12SFO - DEN
Nonstop2h 47mUnited Airlines
Wed 18/605:00DEN - SFO
Nonstop2h 42mUnited Airlines
Deal found 11/4£129
Tue 13/512:05SFO - DEN
1 stop8h 10mAlaska Airlines
Wed 14/508:20DEN - SFO
1 stop9h 21mAlaska Airlines
Deal found 11/4£151
Fri 2/514:34SFO - DEN
1 stop5h 41mHawaiian Airlines
Mon 5/518:37DEN - SFO
1 stop6h 04mHawaiian Airlines
Deal found 11/4£154
Sat 17/509:51SFO - DEN
1 stop3h 54mDelta
Wed 21/512:35DEN - SFO
1 stop6h 13mDelta
Deal found 10/4£166
Mon 21/405:55SFO - DEN
1 stop4h 47mAmerican Airlines
Thu 24/414:35DEN - SFO
1 stop5h 18mAmerican Airlines
Deal found 11/4£318

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 12 April 2025.
Use the filters below to find and compare flights from San Francisco to Denver that are best for you.

Fly from

San Francisco

Fly to

Denver

Route

Depart

Return

Price

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Mon 5/5

05:10-12:30

1 stop6h 20m

Denver Intl

Thu 8/5

10:20-12:05

Nonstop2h 45m

£116

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Mon 5/5

11:12-14:59

Nonstop2h 47m

Denver Intl

Wed 18/6

05:00-06:42

Nonstop2h 42m

£129

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 13/5

12:05-21:15

1 stop8h 10m

Denver Intl

Wed 14/5

08:20-16:41

1 stop9h 21m

£151

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Fri 2/5

14:34-21:15

1 stop5h 41m

Denver Intl

Mon 5/5

18:37-23:41

1 stop6h 04m

£154

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 17/5

09:51-14:45

1 stop3h 54m

Denver Intl

Wed 21/5

12:35-17:48

1 stop6h 13m

£166

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 15/5

05:00-08:38

Nonstop2h 38m

£54

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sun 11/5

07:00-12:30

1 stop4h 30m

£58

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 14/5

12:05-21:15

1 stop8h 10m

£75

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sat 31/5

16:21-23:54

1 stop6h 33m

£83

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 13/5

08:42-23:59

2 stops14h 17m

£90

Flights are sorted by cheapest return flights first.

Deals found on 11/4

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?

Use this chart to determine the optimal time to book a return flight from San Francisco to Denver. Price data was last updated on 4 April 2025.

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 24 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, January is the cheapest month in which you can book a flight from San Francisco to Denver (average of £667). Flying from San Francisco to Denver in July is currently the most expensive (average of £1,030). 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 12 April 2025.

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 at midday, which can drop the price by up to 65% versus a flight in the afternoon.

Weekly flight availability from San Francisco to Denver

Explore weekly flight availability from San Francisco to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 12 April 2025.

The most flights from SFO to DEN are scheduled on a Wednesday (53 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (38 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 13.0 - 58.0 inches per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Denver when rainfall is around 13.0 mm.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 12 April 2025.
To help decide which airline to fly from San Francisco to Denver, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
9,857 reviews
Check prices

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very Good
9,857 reviews
Alaska Airlines
8.0
Very Good
9,857 reviews
Check prices

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very Good
4,277 reviews
Alaska Airlines
8.0
Very Good
9,857 reviews
Check prices

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very Good
7,913 reviews
Alaska Airlines
8.0
Very Good
9,857 reviews
Check prices

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,366 reviews
Alaska Airlines
8.0
Very Good
9,857 reviews
Check prices

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,644 reviews
Alaska Airlines
8.0
Very Good
9,857 reviews
Check prices

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 46 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 27 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from San Francisco to Denver round-trip?

    Flying on Southwest is currently your cheapest option to Denver, with prices starting at £116. Additional return tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at £129 and £151, respectively. You may be able to fly from San Francisco to Denver for 29% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Francisco to Denver one-way?

    The cheapet airlines for a one-way flight from San Francisco to Denver are United Airlines (£54), Southwest (£58), and Hawaiian Airlines (£75).

  • 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: Frontier (93%), Virgin Australia (87%), Air New Zealand( 86%).

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

    Looking at all options, your cheapest flight can be booked for £106. While the most popular route (San Francisco - Denver Intl) can be booked for £118 on average our data indicates £311 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, January is the cheapest month in which you can book a flight from San Francisco to Denver (average of £667). Flying from San Francisco to Denver in July is currently the most expensive (average of £1,030). 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
Winter Park
Frisco

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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
Santa Ana to Denver flights
Ontario 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 12 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£67Average£108FlexibilityNo 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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