Cheapest return ICN–ORD flights, September

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

Return flights

30 Sep - 11 Oct Air Canada
17 Sep - 21 Sep Asiana Airlines
11 Sep - 18 Sep Air Canada
24 Sep - 06 Oct Asiana Airlines
10 Sep - 18 Sep Asiana Airlines
09 Sep - 14 Sep Air Canada
09 Sep - 16 Sep Air Canada
08 Sep - 16 Sep Qatar Airways
02 Sep - 09 Sep Qatar Airways
26 Sep - 03 Oct Air Canada
11 Sep - 26 Sep Air Canada
21 Sep - 26 Sep EVA Air
18 Sep - 26 Sep EVA Air
18 Sep - 03 Oct EVA Air
25 Sep - 03 Oct Air Canada
24 Sep - 04 Oct Korean Air direct
30 Sep - 11 Oct Korean Air direct
24 Sep - 06 Oct Korean Air direct
25 Sep - 03 Oct Korean Air direct
26 Sep - 03 Oct Korean Air direct

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

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