$79 Cheap United flights Denver (DEN) to San Francisco (SFO)

View $79 flight on Tue, Sep 16, 2025Opens in a new window

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$79 Cheap United flights Denver (DEN) to San Francisco (SFO)

Prices were available within the past 7 days and start at $79 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Sep 10 - Sat, Sep 13
DEN
Denver
SFO
San Francisco
$157 Roundtrip, just found
$157
Roundtrip
just found
Select United flight, departing Wed, Sep 10 from Denver to San Francisco, returning Sat, Sep 13, priced at $157 just found
United
Sat, Oct 18 - Wed, Oct 22
DEN
Denver
SFO
San Francisco
$166 Roundtrip, found 5 hours ago
$166
Roundtrip
found 5 hours ago
Select United flight, departing Sat, Oct 18 from Denver to San Francisco, returning Wed, Oct 22, priced at $166 found 5 hours ago
United
Sat, Oct 11 - Tue, Oct 21
DEN
Denver
SFO
San Francisco
$167 Roundtrip, found 16 hours ago
$167
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Oct 11 from Denver to San Francisco, returning Tue, Oct 21, priced at $167 found 16 hours ago
United
Wed, Oct 15 - Tue, Oct 21
DEN
Denver
SFO
San Francisco
$171 Roundtrip, found 1 hour ago
$171
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 15 from Denver to San Francisco, returning Tue, Oct 21, priced at $171 found 1 hour ago
United
Thu, Oct 16 - Wed, Oct 22
DEN
Denver
SFO
San Francisco
$186 Roundtrip, found 1 hour ago
$186
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Oct 16 from Denver to San Francisco, returning Wed, Oct 22, priced at $186 found 1 hour ago
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, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
965 mi
Average flight time
1 hour 43 mins

Frequently asked questions

How much is a United Airlines flight from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
You'll find budget-friendly return United Airlines flights from $157 from DEN to SFO by filtering your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $79 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DEN to SFO with United Airlines?
Browse for return or one-way flights to San Francisco in February or April. You could find cheaper fares with United Airlines during these off-peak months.
What is the cheapest time to book flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO) with United Airlines?
For cheap United Airlines fares from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the cost. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
You can easily fly from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO) on one of United Airlines's 68 direct weekly flights. Use our "Nonstop" and "Airline" filters to find the United Airlines flight that'll arrive at SFO at a time that suits you.
How long does it take to fly from DEN to SFO with United Airlines?
Leave Denver Intl. Airport (DEN) for San Francisco Intl. Airport (SFO) on a direct United Airlines flight, and you'll be in the air for about 2h 50m.
Which day of the week has the most United Airlines flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
If it's flexibility you're after, Saturday offers the most choice for United Airlines flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO). You can pick from 10 different departures.
What is the earliest United Airlines flight from DEN to SFO?
The earliest flight from DEN to SFO with United Airlines leaves at 6:00AM UTC-7. You'll land at 7:50AM UTC-8. The last United Airlines flight of the day leaves at 9:05PM UTC-7 and arrives at 10:56PM UTC-8. With 20% fewer cancellations for departures before noon, jetting out early is typically the smartest choice.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in San Francisco?
United Airlines flights from Denver Intl. Airport (DEN) to San Francisco land at San Francisco Intl. Airport (SFO), Norman Y. Mineta San Jose Intl. Airport (SJC) and Oakland Intl. Airport (OAK). The main San Francisco gateway serviced by this carrier is SFO. It's worth checking out flights arriving at other nearby airports on Expedia as you may find cheaper prices.
Why fly with United Airlines from DEN to SFO?
Offering a rewarding loyalty program, United Airlines is a top choice for many passengers heading from DEN to SFO. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
United Airlines usually flies Boeing 737-800 planes for flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO). This carrier also operates the Boeing 757-300 on this route. Keep in mind that aircraft type can vary due to operational reasons, so the plane you catch could be different on your travel date.
Can I change or cancel my United Airlines flight from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO)?
Depending on the type of fare you purchased, a fee is typically charged if you cancel or change your booking more than 24 hours after it's been confirmed. To find flexible fares, select our "No cancel fee" or "Changes included" filter when you look for flights. For more details on canceling or modifying your reservation, head to "Trips," select your flight and tick "Manage Booking."
*Available to One Key members.