Cheapest return flights from Washington to Seoul in September from $1059

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

Return flights

08 Sep - 22 Sep Turkish Airlines
05 Sep - 12 Sep Etihad Airways
27 Sep - 10 Oct Etihad Airways
08 Sep - 22 Sep Korean Air direct
27 Sep - 10 Oct Korean Air direct
05 Sep - 12 Sep Korean Air direct

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

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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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