$273 Cheap United flights San Francisco (SFO) to Cancun (CUN)

View $273 flight on Sat, Sep 13, 2025Opens in a new window

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$273 Cheap United flights San Francisco (SFO) to Cancun (CUN)

Prices were available within the past 7 days and start at $273 for one-way flights and $442 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov 10 - Tue, Nov 18
SFO
San Francisco
CUN
Cancun
$442 Roundtrip, just found
$442
Roundtrip
just found
Select United flight, departing Mon, Nov 10 from San Francisco to Cancun, returning Tue, Nov 18, priced at $442 just found
Flights from San Francisco (SFO) to Cancun (CUN)
Origin airport
San Francisco Intl.
Destination airport
Cancun Intl.
Airlines serving
Aeromexico, Air Canada, Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United, avianca
Popular airline
Aeromexico
Distance
2405 mi
Average flight time
7 hours 20 mins

Frequently asked questions

How much is a United Airlines flight from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN)?
Make use of the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines round-trip flights from $442 from SFO to CUN. Affordable one-way tickets from $273 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.
What is the cheapest month to fly from SFO to CUN with United Airlines?
United Airlines flights to Cancun tend to be cheaper in the off-peak months of October and September. Whether you're after a one-way or a return ticket, you could score a better deal then.
What is the cheapest time to book flights from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN) with United Airlines?
Start your search for United Airlines flights from SFO to CUN about one month before you want to go. The cheapest time to reserve an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. No matter your itinerary or ticket type, the best day to book international airfare is usually Sunday. Friday can be the most expensive. Passengers who book on a Sunday can save an average of 17% compared to those who book on a Friday.**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.
Does United Airlines fly nonstop from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN)?
United Airlines has direct flights from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN), with 14 weekly departures. Simply select the "Nonstop" and "Airline" filters while searching on Expedia to see all direct United Airlines flights to CUN.
How long does it take to fly from SFO to CUN with United Airlines?
Depart San Francisco Intl. Airport (SFO) for Cancun Intl. Airport (CUN) on a nonstop United Airlines flight, and you'll be in the sky for about 5h 15m.
Which day of the week has the most United Airlines flights from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN)?
Friday has the most United Airlines flights from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN). With 2 daily departures, this is the best day of the week to book something that will work for your schedule.
What is the earliest United Airlines flight from SFO to CUN?
The first flight from SFO to CUN with United Airlines departs at 9:01AM UTC-8. You'll land at 5:20PM UTC-5. The final United Airlines flight of the day leaves at 11:02PM UTC-8 and arrives at 7:13AM UTC-5. With approximately 20% fewer cancellations for early and mid-morning flights, setting off early is typically the wisest option.**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.
What airports does United Airlines fly into in Cancun?
United Airlines flights from San Francisco Intl. Airport (SFO) to Cancun land at Cancun Intl. Airport (CUN). This is the main gateway here.
Why fly with United Airlines from SFO to CUN?
Offering a rewarding loyalty program, United Airlines is a popular choice for many passengers heading from SFO to CUN. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN)?
Book a United Airlines flight from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN), and you'll likely be seated on a Boeing 737 MAX 9. Bear in mind though, that the aircraft type can change depending on operational requirements.
Can I change or cancel my United Airlines flight from San Francisco Intl. Airport (SFO) to Cancun Intl. Airport (CUN)?
Typically, you can modify or cancel your flight, although there may be additional fees if you booked more than 24 hours ago. Need to keep your options open? Apply the "Changes included" or "No cancel fee" filter to find flights that won't penalize you if you need to alter your plans. To make modifications, visit "Trips," select your flight and click on "Manage Booking" for further information.

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