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

Return flights

01 Jun - 16 Jul	Air Canada
15 Jun - 02 Jul	Air Canada
20 Jun - 29 Jun	Air Canada
14 Jun - 03 Jul	Air Canada
01 Jun - 16 Jul	Delta	direct
15 Jun - 02 Jul	Delta	direct
20 Jun - 29 Jun	Delta	direct
14 Jun - 03 Jul	Delta	direct

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

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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Cheapest return flights from Washington to Seoul in June from $1269

Return flights