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

Return flights

24 Nov - 11 Dec	Turkish Airlines
26 Nov - 10 Dec	Turkish Airlines
10 Nov - 17 Nov	Turkish Airlines
13 Nov - 01 Dec	Turkish Airlines
25 Nov - 29 Nov	Turkish Airlines
06 Nov - 22 Nov	Turkish Airlines
28 Nov - 06 Dec	Turkish Airlines
14 Nov - 02 Dec	Air China
23 Nov - 30 Nov	Air Canada
21 Nov - 25 Nov	Air Canada
19 Nov - 29 Nov	Air Canada
13 Nov - 29 Nov	Air Canada
14 Nov - 29 Nov	Air Canada
06 Nov - 22 Nov	Korean Air	direct
05 Nov - 20 Nov	Delta	direct
13 Nov - 01 Dec	Delta	direct
14 Nov - 02 Dec	Delta	direct
24 Nov - 11 Dec	Delta	direct
26 Nov - 10 Dec	Delta	direct
28 Nov - 06 Dec	Delta	direct

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 $1033

Return flights