Cheapest return flights from Seoul to Seattle in May from $579

AirHint found the following cheapest return flights from Seoul (ICN) to Seattle (SEA) in May 2026 (see full year).

Return flights

07 May - 15 May American Airlines
08 May - 29 May American Airlines
30 May - 09 Jun American Airlines
02 May - 15 May American Airlines
17 May - 26 May American Airlines
08 May - 29 May Asiana Airlines direct
17 May - 26 May Asiana Airlines direct
11 May - 22 May Asiana Airlines direct
03 May - 11 May Asiana Airlines direct
22 May - 05 Jun Asiana Airlines direct
02 May - 15 May Alaska Airlines direct
28 May - 05 Jun Asiana Airlines direct
26 May - 05 Jun Asiana Airlines direct
26 May - 03 Jun Asiana Airlines direct
26 May - 30 May Korean Air direct
29 May - 20 Jun Korean Air direct
29 May - 06 Jun Asiana Airlines direct
30 May - 07 Jun Air Canada
27 May - 05 Jun Air Canada
30 May - 07 Jun Delta direct

Also check the deals for one-way flights from Seoul to Seattle in May.

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