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

Return flights

21 Jan - 28 Jan	Turkish Airlines
28 Jan - 04 Feb	Turkish Airlines
02 Jan - 11 Jan	Air Canada
08 Jan - 04 Feb	United
13 Jan - 24 Jan	LOT
08 Jan - 04 Feb	Air Premia	direct
21 Jan - 28 Jan	Air Premia	direct
28 Jan - 04 Feb	Air Premia	direct
18 Jan - 24 Jan	Air Canada
13 Jan - 24 Jan	Air Premia	direct
02 Jan - 11 Jan	Air Premia	direct
26 Jan - 27 Feb	Lufthansa
30 Jan - 06 Feb	Lufthansa

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

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 January from 908€

Return flights