Cheapest return flights from Washington to Seoul in April from 796€

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

Return flights

22 Apr - 13 May Frontier Airlines
06 Apr - 21 Apr Alaska Airlines
05 Apr - 15 Apr Frontier Airlines
10 Apr - 24 Apr Frontier Airlines
14 Apr - 25 Apr Etihad Airways
16 Apr - 23 Apr Etihad Airways
05 Apr - 30 Apr Frontier Airlines
17 Apr - 26 Apr Etihad Airways
05 Apr - 21 Apr Air Canada
08 Apr - 23 Apr Alaska Airlines
30 Apr - 07 May Etihad Airways
03 Apr - 15 Apr Porter Airlines (Canada) Ltd
10 Apr - 28 May Porter Airlines (Canada) Ltd
17 Apr - 16 May Etihad Airways
29 Apr - 13 May Etihad Airways
23 Apr - 04 May Air Canada
23 Apr - 03 May Alaska Airlines
25 Apr - 10 May Etihad Airways
23 Apr - 23 May Etihad Airways
29 Apr - 20 May Frontier Airlines

Also check the deals for one-way flights from Washington 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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