$69 Cheap Frontier Airlines flights Denver (DEN) to San Francisco (SFO)

Finding cheap one-way Frontier Airlines flights from DEN to SFO from $69 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $105 for your next exciting adventure.**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 round-trip or one-way flights to San Francisco in February or April. You could find lower fares with Frontier Airlines during these quieter months.

For cheap Frontier Airlines fares from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO), start searching one to three months before your planned departure. Securing 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 what you pay. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip 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.

Frontier Airlines has direct flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO), with 11 weekly departures. Simply use the “Nonstop” and “Airline” filters during your search on Expedia to show all direct Frontier Airlines flights to SFO.

It takes approximately 2h 54m to fly nonstop from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO) with Frontier Airlines.

Saturday has the most Frontier Airlines flights from Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO). With 2 daily departures, this is a great day to find something that will suit your plans.

The first Frontier Airlines flight from DEN to SFO departs at 10:48AM UTC-7, landing at 12:44PM UTC-8. If you prefer to set off later in the day, the last Frontier Airlines flight leaves DEN at 10:15PM UTC-7 and lands at SFO at 12:09AM UTC-8. Flying before noon is generally a wise choice as morning flights are 20% less likely to be canceled.**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.

Frontier 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 primary San Francisco hub serviced by this carrier is SFO. It’s always worth considering flights arriving at other nearby airports on Expedia as they may offer lower prices.

With a rewarding loyalty program, Frontier Airlines is a popular choice for many passengers journeying from DEN to SFO. Plus, if you’re a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the Denver Intl. Airport (DEN) to San Francisco Intl. Airport (SFO) route, Frontier Airlines typically uses Airbus A321neo and Airbus A320neo planes. Remember that last-minute changes are possible for operational reasons, meaning your flight may be on a different aircraft.

Changes are often free within 24 hours of making your booking, but your airline may charge you after that. For more information about altering your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your plans without extra charges, check the “Changes included” or “No cancel fee” filter when organizing your next escape.