Cheapest return flights from Seattle to Seoul in April from 668€

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

Return flights

20 Apr - 14 May Air Canada
04 Apr - 18 Apr Alaska Airlines
03 Apr - 18 Apr Alaska Airlines
04 Apr - 14 Apr Alaska Airlines
03 Apr - 11 Apr Alaska Airlines
07 Apr - 21 Apr Alaska Airlines
07 Apr - 14 Apr Alaska Airlines
15 Apr - 18 Apr Alaska Airlines
04 Apr - 12 Apr Alaska Airlines
05 Apr - 21 Apr Alaska Airlines
18 Apr - 25 Apr Alaska Airlines
07 Apr - 03 May Korean Air direct
06 Apr - 06 May Korean Air direct
27 Apr - 20 May Alaska Airlines
19 Apr - 03 May Alaska Airlines
20 Apr - 04 May Korean Air direct
29 Apr - 18 May Asiana Airlines direct
20 Apr - 14 May Asiana Airlines direct
18 Apr - 02 May Delta direct
19 Apr - 03 May Delta direct

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

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