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

Return flights

23 May - 29 May	EVA Air
12 May - 26 May	ANA
18 May - 29 May	ANA
19 May - 29 May	ANA
25 May - 31 May	ANA
19 May - 31 May	ANA
04 May - 07 May	ANA
28 May - 04 Jun	ANA
29 May - 15 Jun	EVA Air
29 May - 01 Jun	EVA Air
23 May - 02 Jun	EVA Air
23 May - 01 Jun	EVA Air
30 May - 02 Jun	EVA Air
29 May - 08 Jun	EVA Air
30 May - 08 Jun	EVA Air
02 May - 15 May	EVA Air
14 May - 21 May	ANA
28 May - 31 May	ANA
29 May - 07 Jun	ANA
04 May - 05 Jun	ANA

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

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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Cheapest return flights from Seoul to Seattle in May from $885

Return flights