Cheapest return flights from Seattle to Seoul in April from $938

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

30 Apr - 10 May China Airlines
26 Apr - 05 May Frontier Airlines
21 Apr - 07 May China Airlines
25 Apr - 02 May China Airlines
23 Apr - 30 Apr China Airlines
26 Apr - 30 Apr EVA Air
30 Apr - 07 May Asiana Airlines direct
21 Apr - 07 May Asiana Airlines direct
30 Apr - 10 May Asiana Airlines direct
26 Apr - 05 May Asiana Airlines direct
25 Apr - 02 May Korean Air direct
25 Apr - 04 May Delta direct
23 Apr - 30 Apr Korean Air direct
26 Apr - 30 Apr Korean Air 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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