AirHint found the following cheapest return flights from Newark (EWR) to Seoul (ICN) in October 2026 (see full year).

Return flights

03 Oct - 27 Oct	Alaska Airlines
29 Oct - 30 Nov	Alaska Airlines
25 Oct - 06 Nov	Air Premia	direct
30 Oct - 30 Nov	Alaska Airlines
20 Oct - 30 Nov	Alaska Airlines
03 Oct - 27 Oct	Air Premia	direct
03 Oct - 09 Oct	Alaska Airlines
03 Oct - 10 Oct	Alaska Airlines
30 Oct - 30 Nov	Air Premia	direct
20 Oct - 30 Nov	Air Premia	direct
29 Oct - 30 Nov	Air Premia	direct
03 Oct - 09 Oct	Air Premia	direct
05 Oct - 30 Oct	Lufthansa
25 Oct - 03 Nov	Lufthansa

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

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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Cheapest return flights from Newark to Seoul in October from 966€

Return flights