Cheapest return flights from Washington to Seoul in October from $930

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

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

Return flights

02 Oct - 23 Oct Turkish Airlines
26 Oct - 09 Nov Turkish Airlines
25 Oct - 09 Nov Turkish Airlines
15 Oct - 29 Oct Turkish Airlines
22 Oct - 27 Nov Turkish Airlines
06 Oct - 15 Oct Turkish Airlines
06 Oct - 27 Oct Turkish Airlines
01 Oct - 18 Oct Turkish Airlines
02 Oct - 26 Nov Air Canada
12 Oct - 19 Oct American Airlines
06 Oct - 17 Oct Air Canada
20 Oct - 25 Oct Air Canada
11 Oct - 19 Oct American Airlines
02 Oct - 23 Oct Korean Air direct
02 Oct - 26 Nov Delta direct
25 Oct - 09 Nov Korean Air direct

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

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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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