HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$98+ Cheap flights from Denver to San Francisco (DEN - SFO)

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Denver Intl to San Francisco are usually found in February or September, booked 81 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Denver to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to San Francisco (SFO). 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 July 28, 2025.

Round-trip from

$153
(CheapOair)

One-way from

$98
(Frontier)

Popular in

July

Cheapest in

February

Average price

$281

Good round-trip deal

$243 or less

Good one-way deal

$134 or less
From Denver Intl to San Francisco
Search Deals
One-way flight from Denver Intl to San Francisco
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Denver Intl to San Francisco.
Search Deals
Price to beat on a one-way flight from Denver Intl to San Francisco.
Search Deals

Find flight deals from Denver to San Francisco

Cheapest flights from Denver to San Francisco
Explore the most affordable flight options available from Denver to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/268:50 pmDEN - SFO
Nonstop2h 35mSouthwest
Tue 9/28:35 amSFO - DEN
Nonstop2h 25mSouthwest
Deal found 7/27$157
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1410:29 pmDEN - SFO
Nonstop2h 50mFrontier
Tue 8/196:50 amSFO - DEN
Nonstop2h 40mFrontier
Deal found 7/28$158
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/98:00 amDEN - SFO
1 stop8h 52mHawaiian Airlines
Tue 9/1610:08 amSFO - DEN
1 stop6h 13mHawaiian Airlines
Deal found 7/26$162
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1311:40 amDEN - SFO
1 stop5h 27mAmerican Airlines
Sat 9/205:50 amSFO - DEN
1 stop5h 09mAmerican Airlines
Deal found 7/27$187
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:17 pmDEN - SFO
1 stop6h 27mAlaska Airlines
Tue 9/911:30 amSFO - DEN
1 stop7h 57mAlaska Airlines
Deal found 7/28$196

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to San Francisco 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 2,558,603 searches. Data last updated July 28, 2025.
Use the filters below to find and compare flights from Denver to San Francisco that are best for you.

Fly from

Denver

Fly to

San Francisco

Route

Depart

Return

Price

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 8/26

8:50 pm-10:25 pm

Nonstop2h 35m

San Francisco

Tue 9/2

8:35 am-12:00 pm

Nonstop2h 25m

$157

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 8/14

10:29 pm-12:19 am

Nonstop2h 50m

San Francisco

Tue 8/19

6:50 am-10:30 am

Nonstop2h 40m

$158

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 9/9

8:00 am-3:52 pm

1 stop8h 52m

San Francisco

Tue 9/16

10:08 am-5:21 pm

1 stop6h 13m

$162

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 9/13

11:40 am-4:07 pm

1 stop5h 27m

San Francisco

Sat 9/20

5:50 am-11:59 am

1 stop5h 09m

$187

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 9/5

6:17 pm-11:44 pm

1 stop6h 27m

San Francisco

Tue 9/9

11:30 am-8:27 pm

1 stop7h 57m

$196

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 9/10

8:41 pm-10:30 pm

Nonstop2h 49m

$98

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 9/25

9:35 pm-11:10 pm

Nonstop2h 35m

$99

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Thu 10/2

3:02 pm-10:23 pm

1 stop8h 21m

$108

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Mon 9/29

3:45 pm-9:45 pm

1 stop7h 00m

$109

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 8/30

9:24 pm-11:10 pm

Nonstop2h 46m

$114

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 11 results
1
2

The best insider tips for Denver to San Francisco flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to San Francisco trip
Airlines
Frontier

Frontier's UpFront Plus offers a guaranteed empty middle seat for added comfort.


Frontier's Zone 1 boarding is available with a carry-on purchase or special fare bundle.

Read more about Frontierby Marisa Garcia
United Airlines

United's Economy Plus offers extra legroom seats towards the front of the economy cabin.


United's Polaris Lounges offer showers, napping areas, and dining for premium passengers.

Read more about United Airlinesby Harriet Baskas
Airports
DEN

Use the A Line train for a quick 37-minute ride from downtown Denver to DEN, avoiding traffic and parking hassles.

Read more about DENby Emily Zemler
SFO

Take BART from SFO to downtown San Francisco in about 40 minutes for an affordable and efficient transit option.

Read more about SFOby Harriet Baskas
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from Denver to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Denver with our price prediction graph.
Estimated round-trip 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 Denver to San Francisco

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to San Francisco. Price data was last updated on July 25, 2025.

The best time to book flights from Denver to San Francisco is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Denver to San Francisco (average of $276). Flying from Denver to San Francisco in June is currently the most expensive (average of $358). 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 DEN to SFO?

Find hourly flight availability from Denver to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

It’s optimal to fly from Denver to San Francisco at noon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Denver to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Denver to San Francisco. Price data was last updated on July 20, 2025.

Travelers seeking maximum savings on their Denver to San Francisco flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Denver to San Francisco

Explore weekly flight availability from Denver to San Francisco. 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 July 28, 2025.

The most flights from DEN to SFO are scheduled on a Monday (48 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (34 on average).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated July 28, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Denver to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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
4,237 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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
7,975 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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
2,604 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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
8,892 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

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 Denver to San Francisco. 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 Denver to San Francisco?

    If you book a flight from Denver to San Francisco, you will be flying from Denver Intl to San Francisco. Flights to San Francisco (SFO) from Denver Intl (DEN) take 2h 35m for a nonstop flight. There are 42 flights from Denver Intl to San Francisco per day from 3 airlines.

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

    The Denver Intl to San Francisco flight path was viewed by 138 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 Denver to San Francisco round-trip?

    Currently priced at $153, Frontier will fly you from Denver to San Francisco and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and Hawaiian Airlines - these airlines can fly you to your destination from $157 and $162, respectively. Users have found that Frontier is 27% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $98. However, be on the lookout for offers from Southwest and Hawaiian Airlines, as they are both options that can get you from Denver to San Francisco for a low price.

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

    The top 3 most reliable airlines when flying from Denver to San Francisco are Air China (94%), ANA (90%) and Emirates (85%).

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

    Looking for the cheapest flight from Denver to San Francisco? While on average our users pay $2,104, our data indicates the cheapest price to be $78. The most popular route (Denver Intl - San Francisco), is priced around $97.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to San Francisco (average of $276). Flying from Denver to San Francisco in June is currently the most expensive (average of $358). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
South San Francisco
Livermore
Turlock
Manteca
Antioch
Hollister
Watsonville
Newark
Milpitas
Sunnyvale
Campbell
Lathrop
Foster City
Capitola
Santa Clara
San Leandro
Burlingame

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Las Vegas flights
Denver to San Diego flights
Denver to Los Angeles flights
Denver to Ontario flights
Denver to Santa Ana flights
Denver to Sacramento flights
Denver to Reno flights
Denver to San Jose flights
Colorado Springs to Las Vegas flights
Denver to Palm Springs flights
Denver to Burbank flights
Denver to Santa Barbara flights
Denver to Oakland flights
Denver to San Luis Obispo flights
Denver to Fresno flights
Denver to Medford flights
Denver to Monterey flights
Colorado Springs to San Diego flights
Denver to Long Beach flights
Denver to Bakersfield flights
Colorado Springs to Los Angeles flights
Grand Junction to San Diego flights
Montrose to San Jose flights
Colorado Springs to Ontario flights
Denver to Arcata flights
Montrose to Los Angeles flights
Grand Junction to Los Angeles flights
Colorado Springs to Santa Ana flights
Durango to San Francisco flights
Montrose to San Diego flights
Durango to Las Vegas flights
Grand Junction to Las Vegas flights
Grand Junction to Santa Ana flights
Durango to San Jose flights
Colorado Springs to Burbank flights
Grand Junction to Reno flights
Aspen to San Francisco flights
Colorado Springs to Long Beach flights
Grand Junction to San Francisco flights
Colorado Springs to Reno flights
Vail to Las Vegas flights
Colorado Springs to Sacramento flights
Vail to San Francisco flights
Grand Junction to Ontario flights
Colorado Springs to San Jose flights
Grand Junction to San Luis Obispo flights
Denver to Santa Rosa flights
Denver to Tijuana flights
Montrose to San Francisco flights

Top 3 airlines flying from Denver to San Francisco

Discover the top 3 airlines that operate flights from Denver to San Francisco. 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 2,558,603 searches. Data last updated July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$156FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$141Average$254FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$156Average$316FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.