$202 Cheap United flights Mexico City (MEX) to San Francisco (SFO)

Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines return flights from $336 from MEX to SFO. Affordable one-way tickets from $202 are available too.**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.

Scoring the best United Airlines deals from MEX to SFO often comes down to booking at the right moment. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. As an added bonus, you can pocket 17% on average by buying your fare on a Sunday rather than a Friday, which is usually the most expensive day to book.* It's a good idea to start searching for flights about one month before you plan to travel.*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.

Jetting off from MEX at 6:05AM UTC-6, the first United Airlines flight to SFO arrives at 9:01AM UTC-8. Flying early means you'll be less likely to encounter delays or cancellations.* Not an early riser? The last United Airlines flight from MEX to SFO departs at 6:10PM UTC-6 and touches down at 9:05PM UTC-8.*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.

A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to leave from MEX to SFO with United Airlines. Plus, when you join Expedia's free One Key™ program, you can receive OneKeyCash™* alongside United Airlines's loyalty program earnings. It's yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.