Cheapest return flights from Washington to Seoul in May from 960€

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

Return flights

11 May - 22 May Turkish Airlines
15 May - 23 May WestJet
20 May - 23 Jun Air Canada
15 May - 22 May Turkish Airlines
20 May - 30 Jun SWISS
11 May - 22 May Delta direct
20 May - 30 Jun Delta direct
20 May - 23 Jun Delta direct
15 May - 22 May Korean Air direct
15 May - 23 May Delta direct

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

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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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