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

Return flights

04 Feb - 11 Feb	Air Canada
02 Feb - 17 Feb	Air Canada
08 Feb - 19 Feb	Air Canada
01 Feb - 08 Feb	Air Canada
06 Feb - 22 Feb	Air Canada
01 Feb - 03 Feb	Air Canada
11 Feb - 25 Feb	Air Canada
06 Feb - 21 Feb	Korean Air
09 Feb - 24 Feb	Air Canada
28 Feb - 09 Mar	Air Canada
26 Feb - 02 Mar	Air Canada
01 Feb - 22 Feb	Air Canada
12 Feb - 01 Mar	Korean Air
26 Feb - 02 Mar	Asiana Airlines	direct
28 Feb - 09 Mar	Asiana Airlines	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 $690

Return flights