$54 Cheap Flights from Denver (DEN) to San Francisco (SFO)

View $54 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)

Cheap Flights from Denver to San Francisco (DEN-SFO)

Prices were available within the past 7 days and start at $54 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
$108 Roundtrip, just found
$108
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at $108 just found
Frontier Airlines
Tue, Sep 30 - Thu, Oct 9
DEN
Denver
SFO
San Francisco
$113 Roundtrip, just found
$113
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Sep 30 from Denver to San Francisco, returning Thu, Oct 9, priced at $113 just found
Frontier Airlines
Mon, Aug 18 - Thu, Aug 21
DEN
Denver
SFO
San Francisco
$118 Roundtrip, just found
$118
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Aug 18 from Denver to San Francisco, returning Thu, Aug 21, priced at $118 just found
Frontier Airlines
Sat, Aug 9 - Mon, Aug 18
DEN
Denver
SFO
San Francisco
$123 Roundtrip, just found
$123
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 9 from Denver to San Francisco, returning Mon, Aug 18, priced at $123 just found
Frontier Airlines
Wed, Aug 6 - Mon, Aug 11
DEN
Denver
SFO
San Francisco
$127 Roundtrip, found 4 hours ago
$127
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Wed, Aug 6 from Denver to San Francisco, returning Mon, Aug 11, priced at $127 found 4 hours ago
Frontier Airlines
Wed, Aug 20 - Sun, Aug 24
DEN
Denver
SFO
San Francisco
$128 Roundtrip, just found
$128
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Aug 20 from Denver to San Francisco, returning Sun, Aug 24, priced at $128 just found
United
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
$133 Roundtrip, just found
$133
Roundtrip
just found
Select United flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at $133 just found
Alaska Airlines
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
$142 Roundtrip, just found
$142
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at $142 just found
Southwest Airlines
Sat, Aug 30 - Sat, Sep 6
DEN
Denver
SFO
San Francisco
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Sat, Aug 30 from Denver to San Francisco, returning Sat, Sep 6, priced at $157 just found
American Airlines
Mon, Aug 18 - Thu, Aug 21
DEN
Denver
SFO
San Francisco
$177 Roundtrip, just found
$177
Roundtrip
just found
Select American Airlines flight, departing Mon, Aug 18 from Denver to San Francisco, returning Thu, Aug 21, priced at $177 just found

Find the cheapest month to fly from Denver (DEN) to San Francisco (SFO)

March is typically the cheapest month to fly

From $48 - $397 per traveler.

Graph displaying average flight prices per month

Flights from Denver (DEN) to San Francisco (SFO)
Origin airport
Denver Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$108
Distance
965 mi
Average flight time
1 hour 39 mins

Denver to San Francisco Flights

The cheapest times to fly from Denver to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to San Francisco are during the month of August. You can find some of the cheapest flights from Denver to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to San Francisco

Sunday is one of the best days to book for cheap flights from Denver to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $54 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO) cost?
Pick up cheap return fares starting from $108 from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving DEN on July 23 2025 and touching down at SFO. The price was last updated on July 2 2025 and has not changed since.
What is the cheapest month to fly from DEN to SFO?
The cheapest flights from DEN to SFO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
Select from 3 carriers that operate direct flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO). Including:

  • United Airlines
  • Southwest Airlines
  • Frontier Airlines

What is the cheapest airline that flies from DEN to SFO?
At the moment, the cheapest airline operating one-way flights from DEN to SFO is Frontier Airlines. You can jet off on this route from $54. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from DEN on September 24 2025. Prices were last updated on July 2 2025 and have not changed since.
How many flights per day from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
Every day on average, 15 nonstop flights take off from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO). Select the departure date that best fits your itinerary.
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
Flights between DEN and SFO are busiest at 10 AM. If you'd like a more relaxed experience and possibly cheaper tickets, choose a time when demand is lower.
What day of the week has the most flights from DEN to SFO?
Fly on a Monday if you're after the best selection of flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO).
What is the earliest flight from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
Denver Intl. Airport (DEN)'s earliest flight to San Francisco Intl. Airport (SFO) departs at approximately 6:00AM UTC-7. With a total travel time of 2h 50m, you'll touch down at around 7:50AM UTC-8.
How long does it take to fly from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
Flights from DEN to SFO have an average travel time of 2 hours and 50 minutes. The total distance between the two airports is 970 mi.
What is the best time to fly from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
To arrive at San Francisco Intl. Airport (SFO) without delays, book a flight that leaves Denver Intl. Airport (DEN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Francisco from Denver Intl. Airport (DEN)?
Come in for landing at any of these San Francisco airports after your direct flight from Denver Intl. Airport (DEN):

  • San Francisco Intl. Airport (SFO)
  • Norman Y. Mineta San Jose Intl. Airport (SJC)
  • Oakland Intl. Airport (OAK)

Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO) last-minute?
Booking your ticket from DEN to SFO shortly before your getaway is generally more expensive. But if there's some wiggle room with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a DEN to SFO flight and hotel package?
You'll generally save money by booking a DEN to SFO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your preferred flights and accommodations, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
If you reserved your DEN to SFO flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.