Cheapest return flights from Seattle to Seoul in April from $876

Best time to book flights for Seattle (SEA) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Seoul (ICN) in April 2025 (see full year).

Return flights

01 Apr - 15 Apr Hawaiian Airlines
01 Apr - 30 Apr Alaska Airlines
16 Apr - 22 Apr Air Canada
15 Apr - 21 Apr Air Canada
23 Apr - 27 May Air Canada
14 Apr - 28 Apr China Airlines
01 Apr - 29 Apr China Airlines
01 Apr - 15 Apr Asiana Airlines direct
16 Apr - 30 Apr Korean Air direct
10 Apr - 21 Apr Air Canada
01 Apr - 18 Apr Air Canada
23 Apr - 27 May Asiana Airlines direct
26 Apr - 05 May Asiana Airlines
26 Apr - 05 May Korean Air direct
25 Apr - 02 May Asiana Airlines direct

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

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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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