$224 Cheap United flights San Francisco (SFO) to Tucson (TUS)

Set the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines return flights from $209 from SFO to TUS. Affordable one-way tickets from $224 are also on offer.**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.

Begin your search one to three months before your departure to score cheap fares on United Airlines flights from San Francisco Intl. Airport (SFO) to Tucson Intl. Airport (TUS). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic trips.*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.

The first United Airlines flight from SFO to TUS departs at 9:10AM UTC-8, touching down at 12:18PM UTC-7. If you'd like to head off later, the last United Airlines flight leaves SFO at 7:01PM UTC-8 and touches down at TUS at 10:15PM UTC-7. Flying before noon is often a smart option as morning flights are least likely to experience cancellations.**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.

Journey from SFO to TUS with United Airlines and enjoy a host of benefits including a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.