Cheapest one-way flights from Washington to Seoul in May from $490

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

AirHint found the following cheapest one-way flights from Washington (IAD) to Seoul (ICN) in May 2025 (see full year).

One-Way flights

21 May WestJet
23 May WestJet
19 May WestJet
24 May Air Canada
29 May Porter Airlines (Canada) Ltd
11 May Frontier Airlines
04 May IndiGo
10 May Air Canada
11 May Korean Air direct
04 May Korean Air direct

Also check the deals for return flights from Washington to Seoul in May.

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.

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