Cheapest return flights from Chicago to Seoul in August from 678€

AirHint found the following cheapest return flights from Chicago (ORD) to Seoul (ICN) in August 2025 (see full year).

Return flights

27 Aug - 03 Sep Cathay Pacific
26 Aug - 12 Sep Cathay Pacific
25 Aug - 11 Sep Cathay Pacific
25 Aug - 12 Sep Cathay Pacific
16 Aug - 26 Aug Frontier Airlines
11 Aug - 18 Aug Frontier Airlines
21 Aug - 27 Aug Spirit Airlines
22 Aug - 25 Aug WestJet
13 Aug - 20 Aug Cathay Pacific
17 Aug - 23 Aug Frontier Airlines
07 Aug - 18 Aug WestJet
09 Aug - 17 Aug Spirit Airlines
03 Aug - 17 Aug WestJet
07 Aug - 14 Aug WestJet
30 Aug - 05 Sep Hawaiian Airlines
25 Aug - 11 Sep Delta direct
27 Aug - 03 Sep Delta direct
25 Aug - 12 Sep Delta direct
26 Aug - 12 Sep Delta direct

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

Skyscanner

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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