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

Return flights

05 Jul - 17 Jul	SWISS
20 Jul - 24 Aug	Air Premia	direct
06 Jul - 27 Aug	Alaska Airlines
01 Jul - 12 Jul	Etihad Airways
24 Jul - 19 Aug	Etihad Airways
01 Jul - 05 Jul	Etihad Airways
06 Jul - 17 Jul	Alaska Airlines
07 Jul - 21 Aug	Alaska Airlines
06 Jul - 21 Aug	Alaska Airlines
31 Jul - 15 Aug	Alaska Airlines
06 Jul - 21 Aug	Air Premia	direct
06 Jul - 17 Jul	Air Premia	direct
24 Jul - 19 Aug	Air Premia	direct
05 Jul - 17 Jul	Air Premia	direct
01 Jul - 12 Jul	Air Premia	direct
01 Jul - 05 Jul	Air Premia	direct
07 Jul - 17 Jul	Air Canada
06 Jul - 27 Aug	Delta	direct
06 Jul - 18 Jul	Delta	direct
07 Jul - 21 Aug	Delta	direct

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

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 July from 1225€

Return flights