San Francisco (SFO) to Cancún (CUN) flight deal from $345 USD in economy class

ASAlaska Airlines, Inc.

Round Trip•Economy

SFO

San Francisco International Airport

San Francisco, United States

CUN

Cancún International Airport

Cancún, Mexico

$645 USD

-47%$345 USD

Verified Nov 5, 2025 at 2:37 AM

December 2025

Today

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1$350 2$624 3$576 4$375 5$385 6$360 7$413 8$345 9$568 10$420 11$385 12$413 13$385 14$446 15$558 16$914 17$787 18$792 19$921 20$1,082 21$1,005 22$949 23$965 24$900 25$851 26$1,004 27$730 28$685 29$473 30$476 31$356 1 2 3 4

Limited Availability

12% of dates checked are available within 10% of the lowest price

Wednesday, December 3rd, 2025

10 round-trip options

Returning

Mon, Dec 8, 2025•5 Day Trip

$960 USD

Google Flights

Returning

Tue, Dec 9, 2025•6 Day Trip

$904 USD

Google Flights

Returning

Wed, Dec 10, 2025•7 Day Trip

$773 USD

Google Flights

Returning

Thu, Dec 11, 2025•8 Day Trip

$698 USD

Google Flights

Returning

Fri, Dec 12, 2025•9 Day Trip

$664 USD

Google Flights

Returning

Sat, Dec 13, 2025•10 Day Trip

$634 USD

Google Flights

Returning

Sun, Dec 14, 2025•11 Day Trip

$692 USD

Google Flights

Returning

Mon, Dec 15, 2025•12 Day Trip

$644 USD

Google Flights

Returning

Tue, Dec 16, 2025•13 Day Trip

$576 USD

Google Flights

Returning

Wed, Dec 17, 2025•14 Day Trip

$621 USD

Google Flights