Cheapest return flights from Washington to Seoul in August from $1028

AirHint found the following cheapest return flights from Washington (DCA) to Seoul (ICN) in August 2025 (see full year).

Return flights

26 Aug - 23 Sep Air Canada
27 Aug - 24 Sep Air Canada
20 Aug - 27 Aug Cathay Pacific
07 Aug - 21 Aug Air Canada
16 Aug - 30 Aug Cathay Pacific
11 Aug - 21 Aug Alaska Airlines
14 Aug - 20 Aug Alaska Airlines
31 Aug - 30 Sep Philippine Airlines
10 Aug - 03 Sep Korean Air
06 Aug - 09 Aug jetBlue
08 Aug - 16 Aug Alaska Airlines
10 Aug - 30 Aug Korean Air
15 Aug - 25 Aug Philippine Airlines
20 Aug - 24 Aug Alaska Airlines

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

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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