Cheapest return flights from Chicago to Seoul in September from $880

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

Return flights

05 Sep - 12 Sep Turkish Airlines
01 Sep - 01 Oct Cathay Pacific
07 Sep - 01 Oct Cathay Pacific
05 Sep - 27 Sep Turkish Airlines
05 Sep - 19 Sep EVA Air
19 Sep - 29 Sep Cathay Pacific
07 Sep - 01 Oct Delta direct
01 Sep - 01 Oct Delta direct
19 Sep - 29 Sep Korean Air direct
05 Sep - 19 Sep Delta direct
05 Sep - 27 Sep Korean Air direct
05 Sep - 12 Sep Delta direct

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

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