Cheapest return flights from Chicago to Seoul in December from 689€

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

Return flights

05 Dec - 13 Dec Frontier Airlines
03 Dec - 10 Dec Frontier Airlines
07 Dec - 14 Dec Frontier Airlines
06 Dec - 14 Dec Frontier Airlines
01 Dec - 14 Dec Frontier Airlines
05 Dec - 14 Dec Hawaiian Airlines
31 Dec - 19 Jan Spirit Airlines
08 Dec - 18 Dec Cathay Pacific
08 Dec - 20 Dec Cathay Pacific
31 Dec - 14 Jan Spirit Airlines
05 Dec - 06 Dec Hawaiian Airlines
24 Dec - 09 Jan Hawaiian Airlines
22 Dec - 18 Jan Hawaiian Airlines
04 Dec - 14 Dec Turkish Airlines
23 Dec - 18 Jan Sun Country Airlines
03 Dec - 07 Jan Frontier Airlines
10 Dec - 09 Jan Frontier Airlines
24 Dec - 12 Jan Hawaiian Airlines
23 Dec - 20 Jan Hawaiian Airlines
29 Dec - 12 Jan Frontier Airlines

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

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