Cheapest one-way flights from Newark to Seoul in September from $410

AirHint found the following cheapest one-way flights from Newark (EWR) to Seoul (ICN) in September 2025 (see full year).

One-Way flights

27 Sep Spirit Airlines
24 Sep Frontier Airlines
26 Sep Spirit Airlines
30 Sep Spirit Airlines
16 Sep Spirit Airlines
17 Sep Spirit Airlines
15 Sep Spirit Airlines
13 Sep Spirit Airlines
14 Sep Spirit Airlines
19 Sep Frontier Airlines

Also check the deals for return flights from Newark to Seoul in September.

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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