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Cheapest one-way flights from Washington (IAD) to Seoul (ICN), June

8 dates in June 2027, from $ 645. Book in one tap, or check whether to buy now or wait.

One-way Return

Dates, airline, and price
Dates	Airline	Price
1 Jun 2027	Alaska Airlines
16 Jun 2027	Porter Airlines (Canada) Ltd
11 Jun 2027	WestJet

1 Jun 2027	Air Premia Direct Flight
12 Jun 2027	Ethiopian Airlines
12 Jun 2027	Air Premia Direct Flight
16 Jun 2027	Korean Air Direct Flight
11 Jun 2027	Korean Air Direct Flight

Cheapest deals for the full year

Deals for return flights from Washington to Seoul in June.

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Cheap car rent in Incheon Intl

Updated Oct 11, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Washington (IAD) to Seoul (ICN), June

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