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

Return flights

01 Feb - 09 Feb	Air Canada
22 Feb - 08 Mar	Air Canada
23 Feb - 06 Mar	Air Canada
22 Feb - 07 Mar	Air Canada
23 Feb - 07 Mar	Air Canada
20 Feb - 08 Mar	Air Canada
21 Feb - 08 Mar	Air Canada
01 Feb - 09 Feb	Korean Air	direct
20 Feb - 08 Mar	Delta	direct
21 Feb - 08 Mar	Delta	direct
22 Feb - 08 Mar	Delta	direct
22 Feb - 07 Mar	Delta	direct

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

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 Seattle to Seoul in February from 707€

Return flights