$275 Cheap American Airlines flights San Francisco (SFO) to Cancun (CUN)

Finding cheap one-way American Airlines flights from SFO to CUN from $275 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Or check out our budget-friendly round-trip fares from $579 for your next adventure.**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.

October is one of the least expensive months to jet away to Cancun with American Airlines. You could also find fantastic deals on return and one-way tickets in September.

To find cheap flights from SFO to CUN with American Airlines, begin searching about one month before your intended 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. Another helpful tip? Booking on Sunday offers 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.

Fill in your dates, hit search and select “Nonstop” on Expedia to browse any direct flights from SFO to CUN with American Airlines or another carrier.

To find the earliest departures from SFO to CUN with American Airlines, sort your results by “Morning” and “Early Morning.” Choosing an early flight generally means you’re less 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.

American Airlines flights from San Francisco Intl. Airport (SFO) to Cancun arrive at Cancun Intl. Airport (CUN). This is the main entry point to this city.

Depending on your ticket type, a fee typically applies if you change or cancel your flight more than 24 hours after it’s been confirmed. To find tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you search for flights. For more details on changing or canceling your reservation, visit “Trips,” select your flight and tick “Manage Booking.”