Cheapest return flights from Seattle to Seoul in April from 664€

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

Return flights

09 Apr - 16 Apr Korean Air
20 Apr - 14 May Air Canada
15 Apr - 22 Apr Asiana Airlines
12 Apr - 19 Apr Korean Air
07 Apr - 14 Apr Alaska Airlines
08 Apr - 19 Apr Alaska Airlines
04 Apr - 14 Apr Alaska Airlines
07 Apr - 21 Apr Alaska Airlines
13 Apr - 20 Apr China Airlines
04 Apr - 12 Apr Alaska Airlines
08 Apr - 15 Apr Alaska Airlines
19 Apr - 03 May Korean Air direct
28 Apr - 03 May Alaska Airlines
20 Apr - 04 May Korean Air direct
20 Apr - 14 May Korean Air direct
25 Apr - 31 May Alaska Airlines
26 Apr - 31 May Alaska Airlines
29 Apr - 24 May Asiana Airlines direct
28 Apr - 03 May Asiana Airlines direct
25 Apr - 31 May Asiana Airlines direct

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

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