Cheapest return flights from Washington to Seoul in September from 883€

AirHint found the following cheapest return flights from Washington (IAD) to Seoul (ICN) in September 2026 (see full year).

Return flights

24 Sep - 09 Oct Air Canada
30 Sep - 12 Oct Lufthansa
30 Sep - 14 Oct Lufthansa
30 Sep - 13 Oct Korean Air direct
30 Sep - 14 Oct Korean Air direct
30 Sep - 10 Oct Air France
30 Sep - 13 Oct Air France
30 Sep - 12 Oct Korean Air direct
30 Sep - 15 Oct Korean Air direct
30 Sep - 10 Oct Korean Air direct

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

Powered by

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

Feel free to contact us with any feedback or request another flight research.