Cheapest one-way flights from Newark to Seoul in September from $439

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

One-Way flights

10 Sep Spirit Airlines
15 Sep Spirit Airlines
06 Sep Spirit Airlines
30 Sep Porter Airlines (Canada) Ltd
11 Sep Porter Airlines (Canada) Ltd
03 Sep Spirit Airlines
29 Sep Air Premia direct
24 Sep Air Premia direct
05 Sep Spirit Airlines
04 Sep Spirit 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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Feel free to contact us with any feedback or request another flight research.