Cheapest return flights from Washington to Seoul in May from $1985

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

Return flights

08 May - 26 May Air China
19 May - 02 Jun Air China
15 May - 05 Jun Air China
18 May - 25 May ANA
20 May - 30 Jun ANA
18 May - 31 May ANA
15 May - 24 Jun ANA
24 May - 17 Jun ANA
15 May - 25 Jun ANA
20 May - 30 May ANA
09 May - 19 May ANA
27 May - 06 Jun ANA
15 May - 06 Jun ANA

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

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.