Cheapest return flights from Washington to Seoul in June from $1203

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

Return flights

12 Jun - 20 Jun Sun Country Airlines
19 Jun - 25 Jun WestJet
22 Jun - 02 Jul Alaska Airlines
21 Jun - 02 Jul Lufthansa
22 Jun - 02 Jul Delta direct
21 Jun - 02 Jul Delta direct
12 Jun - 20 Jun Delta direct

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

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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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