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

Return flights

11 Nov - 25 Nov	Air Canada
05 Nov - 18 Nov	Air Canada
12 Nov - 24 Nov	China Eastern
10 Nov - 25 Nov	China Eastern
01 Nov - 07 Nov	Alaska Airlines
05 Nov - 13 Nov	Air Canada
05 Nov - 10 Nov	Air Canada
02 Nov - 16 Nov	Cathay Pacific
08 Nov - 25 Nov	Air Canada
05 Nov - 12 Nov	Cathay Pacific
25 Nov - 02 Dec	Cathay Pacific
19 Nov - 17 Dec	Air Canada
19 Nov - 03 Dec	Cathay Pacific
22 Nov - 05 Dec	Air Canada

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

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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Cheapest return flights from Washington to Seoul in November from $1017

Return flights