Cheapest return flights from Seoul to Seattle in April from $615

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

Return flights

01 Apr - 07 Apr United
01 Apr - 06 Apr United
08 Apr - 23 Apr United
14 Apr - 21 Apr United
30 Apr - 05 May United
02 Apr - 12 Apr United
29 Apr - 02 May United
23 Apr - 25 Apr United
26 Apr - 04 May United
29 Apr - 09 May United
24 Apr - 02 May United
29 Apr - 12 May Delta
18 Apr - 25 Apr Delta
10 Apr - 18 Apr Delta
04 Apr - 07 Apr Delta
30 Apr - 13 May Delta
26 Apr - 03 May Delta
25 Apr - 02 May Delta
26 Apr - 02 May Delta
04 Apr - 08 Apr Delta

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

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