Cheapest one-way flights from Washington to Seoul in December from 615€

AirHint found the following cheapest one-way flights from Washington (IAD) to Seoul (ICN) in December 2025 (see full year).

One-Way flights

29 Dec Frontier Airlines
25 Dec Frontier Airlines
24 Dec Southern Airways Express
31 Dec Air Canada
30 Dec Air Canada
31 Dec Delta direct
30 Dec Delta direct
28 Dec Delta direct
29 Dec Korean Air direct
24 Dec Delta direct

Also check the deals for return flights from Washington to Seoul in December.

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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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