$123 Cheap Frontier Airlines flights Charlotte (CLT) to San Francisco (SFO)

Set the "Price (lowest to highest)" filter on Expedia to find cheap Frontier Airlines round-trip flights from $245 from CLT to SFO. Affordable one-way tickets from $123 are available as well.**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.

For cheap Frontier Airlines fares from Charlotte-Douglas Intl. Airport (CLT) to San Francisco Intl. Airport (SFO), start searching one to three months before your intended 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 price you pay. Sunday is usually the cheapest, 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.

Search Frontier Airlines's earliest flights from CLT to SFO by selecting the "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures also have a 20% less chance of being 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.

With a rewarding loyalty program, Frontier Airlines is a top choice for many travelers heading from CLT to SFO. Plus, if you're a Frontier Miles and One Key™ member booking through Expedia, you can 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.