Cheapest return flights from Newark to Seoul in September from 661€

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

Return flights

22 Sep - 29 Sep Spirit Airlines
27 Sep - 16 Oct Spirit Airlines
22 Sep - 08 Oct Spirit Airlines
27 Sep - 14 Oct Spirit Airlines
26 Sep - 14 Oct Frontier Airlines
22 Sep - 06 Oct Spirit Airlines
29 Sep - 26 Oct Frontier Airlines
30 Sep - 07 Oct Ethiopian Airlines
30 Sep - 21 Oct Ethiopian Airlines
30 Sep - 10 Oct Ethiopian Airlines
16 Sep - 16 Oct Spirit Airlines
26 Sep - 29 Sep Frontier Airlines
16 Sep - 30 Sep Spirit Airlines
26 Sep - 28 Sep Spirit Airlines
12 Sep - 29 Sep Frontier Airlines
15 Sep - 22 Sep Spirit Airlines
12 Sep - 19 Sep Air Premia direct
13 Sep - 19 Sep Spirit Airlines
16 Sep - 23 Sep Air Premia direct
18 Sep - 29 Sep Frontier 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.