$224 Cheap United flights San Francisco (SFO) to Aspen (ASE)

You can discover affordable return United Airlines flights from $209 from SFO to ASE by organizing your results from "Price (lowest to highest)" on Expedia. Or search for options from $224 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.

Start searching one to three months ahead of your travel date to score cheap fares on United Airlines flights from San Francisco Intl. Airport (SFO) to Pitkin County Airport (ASE). 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 reduce 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 flights.*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 ASE takes off at 8:25AM UTC-8, touching down at 12:18PM UTC-7. If you prefer to set off later, the last United Airlines flight leaves SFO at 4:10PM UTC-8 and touches down at ASE at 7:32PM UTC-7. Flying before noon is often a wise choice as morning and mid-morning flights are least likely to face 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.

Fly from SFO to ASE with United Airlines and enjoy a range of benefits including a rewarding loyalty program. When booking 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.