Cheapest return flights from Washington to Seoul in April from $593

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

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

Return flights

08 Apr - 11 Apr Air China
05 Apr - 12 Apr Air China
19 Apr - 09 May Air China
02 Apr - 09 Apr Turkish Airlines
15 Apr - 27 May Turkish Airlines
30 Apr - 23 May Alaska Airlines
29 Apr - 07 May Turkish Airlines
23 Apr - 14 May Turkish Airlines
29 Apr - 11 May Alaska Airlines
28 Apr - 14 May Hawaiian Airlines
25 Apr - 12 May Alaska Airlines
23 Apr - 05 May Hawaiian Airlines
23 Apr - 06 May Hawaiian Airlines
14 Apr - 28 Apr Turkish Airlines
09 Apr - 16 Apr Turkish Airlines
08 Apr - 22 Apr Air China
14 Apr - 30 Apr Cathay Pacific
02 Apr - 15 Apr Turkish Airlines
09 Apr - 21 Apr Frontier Airlines
07 Apr - 13 Apr Air Canada

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

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