Cheapest one-way flights from Seoul to Seattle in April from $348

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

One-Way flights

12 Apr T'way Air
11 Apr T'way Air
26 Apr T'way Air
19 Apr T'way Air
14 Apr T'way Air
15 Apr Hainan Airlines
08 Apr Hainan Airlines
30 Apr T'way Air
27 Apr Air Premia
24 Apr HK Express

Also check the deals for return flights from Seoul to Seattle 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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