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

Return flights

03 Feb - 10 Feb	Turkish Airlines
06 Feb - 22 Feb	Turkish Airlines
18 Feb - 28 Feb	Turkish Airlines
21 Feb - 01 Mar	Turkish Airlines
03 Feb - 10 Feb	Delta	direct
18 Feb - 28 Feb	Delta	direct
22 Feb - 12 Mar	Delta	direct
06 Feb - 22 Feb	Delta	direct
21 Feb - 01 Mar	Delta	direct

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

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 February from 954€

Return flights