Cheapest return flights from Seattle to Cancun in December from $537

AirHint found the following cheapest return flights from Seattle (SEA) to Cancun (CUN) in December 2025 (see full year).

Return flights

27 Dec - 01 Jan Aeromexico
28 Dec - 31 Dec Aeromexico direct
27 Dec - 31 Dec Frontier Airlines
24 Dec - 30 Dec Aeromexico
27 Dec - 31 Dec Alaska Airlines direct
24 Dec - 27 Dec Aeromexico
28 Dec - 01 Jan Frontier Airlines
30 Dec - 04 Jan Frontier Airlines
31 Dec - 03 Jan Aeromexico
24 Dec - 01 Jan Aeromexico
27 Dec - 01 Jan Delta direct
28 Dec - 01 Jan Aeromexico direct
28 Dec - 04 Jan Aeromexico
30 Dec - 04 Jan Hawaiian Airlines direct
27 Dec - 03 Jan Aeromexico
24 Dec - 27 Dec Hawaiian Airlines direct
26 Dec - 28 Dec Sun Country Airlines
24 Dec - 28 Dec Alaska Airlines direct
25 Dec - 28 Dec Sun Country Airlines
25 Dec - 27 Dec Sun Country Airlines

Also check the deals for one-way flights from Seattle to Cancun in December.

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