Cheapest return flights from Washington to Seoul in April from 903€

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

Return flights

29 Apr - 17 May Air Premia direct
11 Apr - 27 Apr Porter Airlines (Canada) Ltd
13 Apr - 24 Apr Frontier Airlines
22 Apr - 29 Apr Alaska Airlines
22 Apr - 27 Apr Alaska Airlines
22 Apr - 26 Apr Alaska Airlines
19 Apr - 26 Apr Frontier Airlines
11 Apr - 17 Apr Porter Airlines (Canada) Ltd
14 Apr - 21 Apr Frontier Airlines
14 Apr - 25 Apr Frontier Airlines
05 Apr - 28 Apr Frontier Airlines
09 Apr - 20 May Turkish Airlines
24 Apr - 12 May Air Canada
25 Apr - 09 May Air Canada
24 Apr - 15 May Air Canada
23 Apr - 02 May Air Canada
26 Apr - 01 May Air Canada
27 Apr - 01 May Delta
09 Apr - 20 May Korean Air direct
25 Apr - 09 May Korean Air direct

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

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.