$71 Cheap United flights Denver (DEN) to San Francisco (SFO)

You’ll find budget-friendly return United Airlines flights from $141 from DEN to SFO by filtering your results from “Price (lowest to highest)” on Expedia. Or search for bargains from $71 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.”