Cheapest return flights from Seattle to Seoul in April from $869

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 - 30 Apr Air Canada
03 Apr - 12 Apr Air Canada
17 Apr - 30 Apr Hainan Airlines
17 Apr - 22 Apr Spirit Airlines
26 Apr - 05 May Alaska Airlines
30 Apr - 20 May WestJet
01 Apr - 15 Apr Alaska Airlines
07 Apr - 28 Apr Air Canada
22 Apr - 29 Apr China Airlines
06 Apr - 21 Apr Air Canada
14 Apr - 21 Apr China Airlines
21 Apr - 29 May Air Canada
18 Apr - 21 Apr Air Canada
30 Apr - 07 May Air Canada
16 Apr - 04 May China Airlines
15 Apr - 02 May Air Canada
20 Apr - 17 May Air Canada
16 Apr - 01 May China Airlines
14 Apr - 01 May China Airlines
12 Apr - 01 May WestJet

Also check the deals for one-way 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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