Cheapest return flights from Washington to Seoul in January from $1040

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

Return flights

21 Jan - 01 Feb Frontier Airlines
25 Jan - 01 Feb Air Canada
17 Jan - 24 Jan Frontier Airlines
18 Jan - 26 Jan Alaska Airlines
20 Jan - 25 Jan Frontier Airlines
20 Jan - 27 Jan Air Canada
30 Jan - 03 Feb Porter Airlines (Canada) Ltd
18 Jan - 07 Feb Air Canada
19 Jan - 03 Feb Air Canada
19 Jan - 26 Jan Air Canada
18 Jan - 25 Jan Air Canada
13 Jan - 20 Jan Air Canada
28 Jan - 14 Feb Air Canada
19 Jan - 25 Jan Air Canada
17 Jan - 23 Jan Alaska Airlines
15 Jan - 22 Jan Air Canada
27 Jan - 06 Feb Air Canada

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

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