Cheapest return flights from Washington to Seoul in October from $1251

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

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

Return flights

25 Oct - 15 Nov Alaska Airlines
22 Oct - 12 Nov Cathay Pacific
27 Oct - 05 Nov Air Canada
29 Oct - 06 Nov Air Canada
01 Oct - 01 Nov Air Canada
26 Oct - 09 Nov Air Canada
27 Oct - 15 Nov Cathay Pacific
25 Oct - 08 Nov Air Canada
06 Oct - 17 Oct Air Canada
23 Oct - 07 Nov Cathay Pacific
23 Oct - 08 Nov Cathay Pacific

Also check the deals for one-way 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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul