Cheapest return flights from Chicago to Seoul in September from $854

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

Return flights

01 Sep - 08 Sep Cathay Pacific
21 Sep - 30 Oct Cathay Pacific
01 Sep - 29 Oct Cathay Pacific
21 Sep - 29 Oct Cathay Pacific
10 Sep - 23 Sep EVA Air
10 Sep - 23 Sep Delta direct
01 Sep - 29 Oct Delta direct
21 Sep - 29 Oct Delta direct
21 Sep - 30 Oct Delta direct

Also check the deals for one-way flights from Chicago 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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