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

Return flights

13 Jan - 19 Jan	Cathay Pacific
12 Jan - 21 Jan	Cathay Pacific
07 Jan - 19 Jan	Cathay Pacific
14 Jan - 22 Jan	Cathay Pacific
04 Jan - 04 Feb	Cathay Pacific
05 Jan - 04 Feb	Cathay Pacific
09 Jan - 17 Jan	LOT
10 Jan - 17 Jan	Cathay Pacific
02 Jan - 11 Jan	EVA Air
12 Jan - 21 Jan	Delta	direct
14 Jan - 22 Jan	Delta	direct
10 Jan - 25 Jan	Air Canada
05 Jan - 04 Feb	Korean Air	direct
04 Jan - 04 Feb	Korean Air	direct

Also check the deals for one-way flights from Chicago 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 Chicago to Seoul in January from 652€

Return flights