Cheapest return flights from Newark to Seoul in September from 718€

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

Return flights

09 Sep - 17 Sep Spirit Airlines
03 Sep - 17 Sep Frontier Airlines
06 Sep - 15 Sep Spirit Airlines
30 Sep - 15 Oct Spirit Airlines
30 Sep - 26 Oct Hawaiian Airlines
05 Sep - 18 Sep Frontier Airlines
02 Sep - 09 Sep Spirit Airlines
11 Sep - 23 Sep Ethiopian Airlines
30 Sep - 07 Oct Ethiopian Airlines
11 Sep - 19 Sep Ethiopian Airlines
11 Sep - 18 Sep Ethiopian Airlines
29 Sep - 26 Oct Spirit Airlines
05 Sep - 15 Sep Frontier Airlines
05 Sep - 17 Sep Frontier Airlines
28 Sep - 26 Oct Spirit Airlines
18 Sep - 09 Oct Spirit Airlines
09 Sep - 07 Oct Spirit Airlines
29 Sep - 06 Oct Spirit Airlines
27 Sep - 12 Oct Spirit Airlines
22 Sep - 06 Oct Spirit Airlines

Also check the deals for one-way 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.