$180 Cheap United flights San Francisco (SFO) to Mexico City (MEX)

Set the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines return flights from $382 from SFO to MEX. Affordable one-way tickets from $180 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.

To get affordable flights from SFO to MEX with United Airlines, start searching about one month before your planned departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Want another tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**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 earliest flight from SFO to MEX with United Airlines leaves at 10:48AM UTC-8. You'll touch down at 5:10PM UTC-6. The last United Airlines flight of the day leaves at 10:50PM UTC-8 and arrives at 5:05AM UTC-6. With approximately 20% fewer cancellations for morning and mid-morning departures, heading out early is generally 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.

Travel from SFO to MEX with United Airlines and you can look forward to a range of perks starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you could 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.