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

Return flights

02 Nov - 06 Nov	Alaska Airlines	direct
10 Nov - 18 Nov	Aeromexico	direct
14 Nov - 18 Nov	Aeromexico	direct
15 Nov - 21 Nov	Frontier Airlines
16 Nov - 20 Nov	Frontier Airlines
18 Nov - 20 Nov	Aeromexico
14 Nov - 20 Nov	Aeromexico
18 Nov - 25 Nov	Aeromexico
04 Nov - 11 Nov	Delta
05 Nov - 12 Nov	Aeromexico
24 Nov - 01 Dec	Frontier Airlines
23 Nov - 01 Dec	Frontier Airlines
28 Nov - 19 Dec	Sun Country Airlines
24 Nov - 01 Dec	Aeromexico	direct
23 Nov - 01 Dec	Hawaiian Airlines	direct

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from Seattle to Cancun in November from $323

Return flights