Cheapest one-way flights from Seattle to Cancun in October from $308

AirHint found the following cheapest one-way flights from Seattle (SEA) to Cancun (CUN) in October 2025 (see full year).

One-Way flights

10 Oct Sun Country Airlines

Also check the deals for return flights from Seattle to Cancun in October.

Skyscanner

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.

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