Cheapest return flights from Newark to Seoul in September from $845

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

Return flights

30 Sep - 26 Oct Ethiopian Airlines
24 Sep - 08 Oct Frontier Airlines
22 Sep - 08 Oct Spirit Airlines
29 Sep - 23 Oct Spirit Airlines
29 Sep - 09 Oct Frontier Airlines
22 Sep - 10 Oct Frontier Airlines
30 Sep - 24 Oct Ethiopian Airlines
29 Sep - 26 Oct Spirit Airlines
28 Sep - 08 Oct Spirit Airlines
16 Sep - 16 Oct Spirit Airlines
24 Sep - 29 Sep Frontier Airlines
26 Sep - 29 Sep Spirit Airlines
15 Sep - 23 Sep Air Premia direct
17 Sep - 22 Sep Air Premia direct
10 Sep - 15 Sep Air Premia direct
22 Sep - 29 Sep Spirit Airlines
19 Sep - 23 Sep Air Premia direct
11 Sep - 23 Sep Air Premia direct
24 Sep - 30 Sep Frontier Airlines
08 Sep - 11 Sep Air Premia direct

Also check the deals for one-way flights from Newark to Seoul in September.

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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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