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Cheap flights from San Francisco to Denver from £56

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
26 Feb — 5 Mar1
1 adult

The best prices from San Francisco to Denver Intl are usually found in September or April, booked 65 days in advance, depart on a Thursday or Friday and return on a Monday

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 21 February 2025.

Round-trip from

£111

One-way from

£56

Popular in

December

Cheapest in

September

Average price

£179

Good round-trip deal

£92 or less

Good one-way deal

£165 or less
Southwest
  • Southwest
  • 3/4-7/4
  • Nonstop
  • 5h 15m total
  • San Francisco to Denver
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Southwest
  • Southwest
  • 1/4
  • Nonstop
  • 2h 30m total
  • San Francisco to Denver
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£7 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 21 February 2025.

Thu 3/405:05SFO - DEN
Nonstop2h 30mSouthwest
Mon 7/422:45DEN - SFO
Nonstop2h 45mSouthwest
Deal found 21/2£111
Wed 16/410:35SFO - DEN
1 stop4h 33mUnited Airlines
Sun 20/407:45DEN - SFO
Nonstop2h 51mUnited Airlines
Deal found 21/2£134
Sun 20/406:05SFO - DEN
1 stop6h 25mDelta
Sat 26/414:25DEN - SFO
1 stop9h 05mDelta
Deal found 21/2£160
Wed 12/314:43SFO - DEN
1 stop5h 37mAlaska Airlines
Wed 19/307:00DEN - SFO
2 stops9h 44mAlaska Airlines
Deal found 21/2£209

Find flights from San Francisco to Denver within your budget

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 21 February 2025.

Fly from

San Francisco

Fly to

Denver

Route

Depart

Return

Price

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Thu 3/4

05:05-08:35

Nonstop2h 30m

Denver Intl

Mon 7/4

22:45-00:30

Nonstop2h 45m

£111

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 16/4

10:35-16:08

1 stop4h 33m

Denver Intl

Sun 20/4

07:45-09:36

Nonstop2h 51m

£134

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sun 20/4

06:05-13:30

1 stop6h 25m

Denver Intl

Sat 26/4

14:25-22:30

1 stop9h 05m

£160

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Wed 12/3

14:43-21:20

1 stop5h 37m

Denver Intl

Wed 19/3

07:00-15:44

2 stops9h 44m

£209

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 1/4

05:00-08:30

Nonstop2h 30m

£56

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 11/3

11:35-21:20

1 stop8h 45m

£77

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Tue 22/4

05:00-08:38

Nonstop2h 38m

£80

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Fri 14/3

06:05-13:29

1 stop6h 24m

£81

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sun 11/5

08:00-21:15

1 stop12h 15m

£92

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

Sun 30/3

15:55-17:40

2 stops48h 45m

£1,621

Flights are sorted by cheapest return flights first.

Deals found on 21/2

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.

Travel insights for flights from San Francisco to Denver

Get recent, data-driven insights about flights from San Francisco to Denver including ideal travel times, pricing trends, and more.

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 14 February 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 65 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 21 February 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 63% versus a flight in the morning.

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 21 February 2025.

The most flights from SFO to DEN are scheduled on a Thursday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 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 21 February 2025.
To help decide which airline to fly from San Francisco to Denver, see what other customers have to say about Southwest, Alaska Airlines and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,401 reviews
Check prices

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Southwest
8.1
Very Good
4,401 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Alaska Airlines
8.0
Very Good
9,697 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Delta
8.0
Very Good
8,213 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Hawaiian Airlines
7.9
Good
2,316 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Qatar Airways
7.4
Good
3,609 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Crew

8.7

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

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 40m for a nonstop flight. There are 43 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 25 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 £111. Additional return tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at £134 and £160, respectively. You may be able to fly from San Francisco to Denver for 33% 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 Southwest (£56), Hawaiian Airlines (£77), and United Airlines (£80).

  • 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 China (91%), Air Canada (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 £69. While the most popular route (San Francisco - Denver Intl) can be booked for £130 on average our data indicates £294 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

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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
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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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£69Average£111FlexibilityNo cancel feeOn-time62%
Search Frontier flights

Fly with Cheapflights

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

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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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