AirHint found the following cheapest return flights from Newark (EWR) to Seoul (ICN) in August 2026 (see full year).

Return flights

25 Aug - 01 Sep	LOT
01 Aug - 15 Aug	Turkish Airlines
07 Aug - 20 Aug	Turkish Airlines
01 Aug - 21 Aug	Turkish Airlines
16 Aug - 29 Aug	LOT
15 Aug - 22 Aug	Turkish Airlines
17 Aug - 30 Aug	Air Canada
03 Aug - 25 Aug	Lufthansa
03 Aug - 26 Aug	Lufthansa
03 Aug - 24 Aug	Lufthansa
03 Aug - 27 Aug	Lufthansa

Also check the deals for one-way flights from Newark to Seoul in August.

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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Cheapest return flights from Newark to Seoul in August from $1400

Return flights