Cheapest return flights from Washington to Seoul in August from $1039

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

Return flights

22 Aug - 05 Sep Alaska Airlines
18 Aug - 08 Sep Alaska Airlines
28 Aug - 01 Sep Alaska Airlines
16 Aug - 28 Aug Alaska Airlines
14 Aug - 28 Aug Alaska Airlines
30 Aug - 19 Sep Air Canada
14 Aug - 23 Aug Alaska Airlines
05 Aug - 19 Aug Cathay Pacific
19 Aug - 26 Aug Air Canada
19 Aug - 27 Aug Air Canada
12 Aug - 24 Aug Alaska Airlines
13 Aug - 23 Aug Alaska Airlines

Also check the deals for one-way flights from Washington to Seoul in August.

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