Cheapest one-way flights from Seattle to Seoul in April from $509

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

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

One-Way flights

28 Apr China Airlines
26 Apr Japan Airlines
25 Apr Japan Airlines
29 Apr China Airlines
30 Apr China Airlines
26 Apr Asiana Airlines direct
29 Apr Asiana Airlines direct
28 Apr Asiana Airlines direct
25 Apr Asiana Airlines direct
30 Apr Asiana Airlines direct

Also check the deals for return flights from Seattle to Seoul in April.

Skyscanner

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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