Cheapest return flights from Seoul to Washington in December from $888

Best time to book flights for Seoul (ICN) to Washington (IAD) flights at AirHint

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

Return flights

09 Dec - 02 Jan Air Canada
01 Dec - 06 Dec Air Canada
23 Dec - 06 Jan Air China
22 Dec - 05 Jan United
24 Dec - 31 Dec Asiana Airlines
15 Dec - 29 Dec Delta
26 Dec - 28 Dec Delta
24 Dec - 31 Dec Korean Air direct
26 Dec - 28 Dec Korean Air direct
15 Dec - 29 Dec Korean Air direct
22 Dec - 05 Jan Korean Air direct
23 Dec - 06 Jan Korean Air direct
21 Dec - 01 Jan Delta
27 Dec - 05 Jan Delta
01 Dec - 06 Dec Korean Air direct
21 Dec - 02 Jan Air Canada
21 Dec - 01 Jan Korean Air direct
27 Dec - 05 Jan Korean Air direct

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