Cheapest return DCA–ICN flights, December

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

Return flights

01 Dec - 15 Dec Alaska Airlines
23 Dec - 21 Jan Air Canada
21 Dec - 21 Jan Alaska Airlines
26 Dec - 07 Jan United
23 Dec - 02 Jan Delta
23 Dec - 03 Jan Air Canada
22 Dec - 02 Jan Air Canada
21 Dec - 04 Jan Air Canada
21 Dec - 03 Jan Delta
19 Dec - 13 Jan Emirates

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

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