Cheapest return flights from Chicago to Athens in December from 501€

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

Return flights

31 Dec - 14 Jan SWISS
31 Dec - 07 Jan Frontier Airlines
29 Dec - 08 Jan Lufthansa
31 Dec - 06 Jan Frontier Airlines
26 Dec - 31 Jan LOT
30 Dec - 06 Jan KLM
24 Dec - 28 Dec Lufthansa
29 Dec - 06 Jan Air France
24 Dec - 31 Dec Lufthansa
24 Dec - 30 Dec SWISS
24 Dec - 06 Jan Lufthansa
28 Dec - 08 Jan Lufthansa
25 Dec - 01 Jan Lufthansa
26 Dec - 28 Dec Frontier Airlines
27 Dec - 30 Dec Turkish Airlines

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

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