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

Return flights

26 Aug - 02 Sep	Alaska Airlines
26 Aug - 01 Sep	Alaska Airlines
18 Aug - 02 Sep	Alaska Airlines
18 Aug - 06 Sep	United
09 Aug - 27 Aug	United
26 Aug - 01 Sep	Air Premia	direct
26 Aug - 02 Sep	Air Premia	direct
09 Aug - 27 Aug	Air Premia	direct
18 Aug - 02 Sep	Air Premia	direct
18 Aug - 06 Sep	Air Premia	direct
08 Aug - 30 Aug	Air Premia	direct
04 Aug - 16 Aug	Air Premia	direct
14 Aug - 02 Sep	Delta

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 1109€

Return flights