Cheapest one-way flights from Washington to Seoul in October from $523

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

One-Way flights

29 Oct Turkish Airlines
26 Oct Turkish Airlines
04 Oct Turkish Airlines
10 Oct WestJet
17 Oct Air Canada
19 Oct Air Canada
30 Oct Air Canada
09 Oct Frontier Airlines
08 Oct Hawaiian Airlines
29 Oct Korean Air direct

Also check the deals for return flights from Washington to Seoul in October.

Skyscanner

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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