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Cheap flights from San Francisco to Denver from $120

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
9 jul — 16 jul1
1 adult

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

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 4 julho 2025.

Round-trip from

$239

One-way from

$120

Popular in

June

Cheapest in

January

Average price

$376

Good round-trip deal

$469 or less

Good one-way deal

$119 or less
Southwest
  • Southwest
  • 16/8-18/8
  • Nonstop
  • 5h 10m total
  • San Francisco to Denver
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United Airlines
  • United Airlines
  • 5/8
  • Nonstop
  • 2h 40m total
  • San Francisco to Denver
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($65 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average return price).
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Average for round-trip flights in July 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 4 julho 2025.

sáb 16/805:15SFO - DEN
Nonstop2h 25mSouthwest
seg 18/819:30DEN - SFO
Nonstop2h 45mSouthwest
Deal found 2/7$239
qua 20/806:50SFO - DEN
Nonstop2h 40mFrontier
qua 27/820:45DEN - SFO
1 stop16h 22mFrontier
Deal found 3/7$243
qui 6/1107:00SFO - DEN
1 stop11h 03mAlaska Airlines
ter 11/1111:27DEN - SFO
1 stop6h 55mAlaska Airlines
Deal found 4/7$268
seg 4/805:00SFO - DEN
Nonstop2h 36mUnited Airlines
sáb 9/808:02DEN - SFO
Nonstop2h 43mUnited Airlines
Deal found 3/7$272
qui 14/805:55SFO - DEN
1 stop4h 39mDelta
qua 20/818:25DEN - SFO
1 stop4h 23mDelta
Deal found 4/7$330
qua 20/808:00SFO - DEN
1 stop19h 00mMultiple Airlines
qua 27/822:29DEN - SFO
2 stops23h 08mMultiple Airlines
Deal found 3/7$336

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 647,157 searches. Data last updated 4 julho 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

sáb 16/8

05:15-08:40

Nonstop2h 25m

Denver Intl

seg 18/8

19:30-21:15

Nonstop2h 45m

$239

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

qua 20/8

06:50-10:30

Nonstop2h 40m

Denver Intl

qua 27/8

20:45-12:07

1 stop16h 22m

$243

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

qui 6/11

07:00-19:03

1 stop11h 03m

Denver Intl

ter 11/11

11:27-17:22

1 stop6h 55m

$268

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

seg 4/8

05:00-08:36

Nonstop2h 36m

Denver Intl

sáb 9/8

08:02-09:45

Nonstop2h 43m

$272

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

qui 14/8

05:55-11:34

1 stop4h 39m

Denver Intl

seg 18/8

05:45-12:11

1 stop7h 26m

$330

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

qua 20/8

08:00-04:00

1 stop19h 00m

Denver Intl

qua 27/8

22:29-20:37

2 stops23h 08m

$336

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

ter 5/8

06:30-10:10

Nonstop2h 40m

$120

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

sáb 27/9

14:42-21:59

1 stop6h 17m

$134

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

sáb 2/8

05:15-08:40

Nonstop2h 25m

$135

San FranciscoDenver

SFO - DEN

SFODEN

San Francisco

qua 8/10

10:30-19:10

1 stop7h 40m

$160

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 11 results
1
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.

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 27 June 2025.

To ensure you get the cheapest price possible for a flight from San Francisco to Denver, you should look to book at least 24 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from San Francisco to Denver (average of $988). Flying from San Francisco to Denver in December is currently the most expensive (average of $1,617). 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 4 julho 2025.

It’s optimal to fly from San Francisco to Denver in the morning. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at midday.

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 4 julho 2025.

The most flights from SFO to DEN are scheduled on a Wednesday (59 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (31 on average).

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 4 julho 2025.
Read through reviews of airlines operating flights from San Francisco to Denver, such as Alaska Airlines, Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very Good
4,270 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very Good
7,970 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,543 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,845 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 35m for a nonstop flight. There are 44 flights from San Francisco to Denver per day from 1 airline.

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

    Flights from San Francisco to Denver Intl have been viewed 35 times in the past calendar month.

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

    Cheapflights users have booked flights from San Francisco to Denver round-trip from $239. Other airlines that can offer you cheap pricing are Frontier, from $243, and Alaska Airlines, from $268. Users have found that Southwest is 29% cheaper than the other options available to this destination.

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

    $120 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Hawaiian Airlines and Southwest, with prices starting from $134 and $135, respectively.

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

    The top 3 most reliable airlines when flying from San Francisco to Denver are Asiana Airlines (80%), Air Canada (77%) and Virgin Australia (77%).

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

    The cheapest flight price from San Francisco to Denver is $119. On average you can expect to pay $439. The most popular route, (San Francisco - Denver Intl), can usually be booked for $239.

  • 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, March is the cheapest month in which you can book a flight from San Francisco to Denver (average of $988). Flying from San Francisco to Denver in December is currently the most expensive (average of $1,617). 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

Browse thousands of different options on Cheapflights for your next trip

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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
Las Vegas 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 647,157 searches. Data last updated 4 julho 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$113FlexibilityNo 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?

Cheapflights helps you search for flights from San Francisco to Denver via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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?

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to Denver flexibly with Cheapflights today.

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

Yes! Start tracking prices for San Francisco to Denver flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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