Cheapest return flights from Chicago to Seoul in September from $700
AirHint found the following cheapest return flights from Chicago (ORD) to Seoul (ICN)
in September 2025 (see full year ).
Return flights
02 Sep
- 09 Sep
Cathay Pacific
$ 700
18 Sep
- 22 Sep
Cathay Pacific
$ 705
10 Sep
- 21 Oct
Cathay Pacific
$ 715
10 Sep
- 22 Oct
Cathay Pacific
$ 715
10 Sep
- 13 Oct
Cathay Pacific
$ 718
08 Sep
- 17 Sep
Cathay Pacific
$ 731
11 Sep
- 17 Sep
Cathay Pacific
$ 735
10 Sep
- 16 Sep
Cathay Pacific
$ 743
05 Sep
- 14 Sep
Cathay Pacific
$ 743
02 Sep
- 19 Sep
Cathay Pacific
$ 743
08 Sep
- 25 Sep
Cathay Pacific
$ 748
04 Sep
- 18 Sep
Cathay Pacific
$ 748
10 Sep
- 23 Oct
Cathay Pacific
$ 758
01 Sep
- 13 Sep
Cathay Pacific
$ 776
12 Sep
- 30 Oct
Cathay Pacific
$ 801
10 Sep
- 21 Oct
Korean Air
$ 1597
direct
10 Sep
- 22 Oct
Korean Air
$ 1597
direct
10 Sep
- 23 Oct
Korean Air
$ 1597
direct
10 Sep
- 13 Oct
Delta
$ 1603
direct
20 Sep
- 03 Oct
Hawaiian Airlines
$ 1693
Also check the deals for one-way flights from Chicago to Seoul in September .
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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