Cheapest one-way flights from Washington to Seoul in August from $399

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 August 2025 (see full year).

One-Way flights

27 Aug WestJet
25 Aug Alaska Airlines
26 Aug Alaska Airlines
01 Aug WestJet
30 Aug Allegiant Air
19 Aug Turkish Airlines
16 Aug Turkish Airlines
08 Aug Turkish Airlines
25 Aug Korean Air direct
27 Aug Korean Air direct

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

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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