Cheapest one-way flights from Washington to Seoul in December from $515

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

One-Way flights

08 Dec Turkish Airlines
02 Dec Turkish Airlines
10 Dec Air Canada
26 Dec Air Canada
11 Dec Air Canada
13 Dec Turkish Airlines
12 Dec Turkish Airlines
08 Dec Korean Air direct
02 Dec Korean Air direct
10 Dec Korean Air direct

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

Skyscanner

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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