Cheapest return flights from Washington to Seoul in May from $1028

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 May 2025 (see full year).

Return flights

14 May - 27 May Alaska Airlines
14 May - 26 May Alaska Airlines
14 May - 24 May Hawaiian Airlines
13 May - 03 Jun Alaska Airlines
06 May - 18 May Alaska Airlines
14 May - 25 May Alaska Airlines
17 May - 28 May Alaska Airlines
14 May - 18 Jun Alaska Airlines
15 May - 24 May Hawaiian Airlines
05 May - 21 May Alaska Airlines
12 May - 19 May Turkish Airlines
14 May - 22 May Hawaiian Airlines
07 May - 23 Jun Alaska Airlines
29 May - 17 Jun Allegiant Air
27 May - 26 Jun Hawaiian Airlines
20 May - 04 Jun Cathay Pacific
29 May - 13 Jun Allegiant Air
20 May - 01 Jun Air India
08 May - 03 Jun EgyptAir
10 May - 01 Jun Alaska Airlines

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

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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.

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