Cheapest return flights from Washington to Seoul in August from $1070

Best time to book flights for Washington (IAD) to Seoul (ICN) flights at AirHint

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

Return flights

25 Aug - 11 Sep Cathay Pacific
04 Aug - 10 Sep Air Canada
13 Aug - 30 Aug Turkish Airlines
13 Aug - 19 Aug Turkish Airlines
07 Aug - 14 Aug Alaska Airlines
03 Aug - 10 Aug Alaska Airlines
13 Aug - 14 Aug Alaska Airlines
25 Aug - 11 Sep Delta direct
04 Aug - 10 Sep Korean Air direct
13 Aug - 19 Aug Korean Air direct
07 Aug - 14 Aug Korean Air direct

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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