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

Return flights

05 Dec - 11 Dec	Delta
05 Dec - 13 Jan	Delta
06 Dec - 10 Dec	Delta
06 Dec - 11 Dec	Delta
05 Dec - 12 Jan	Delta
05 Dec - 09 Jan	Delta
05 Dec - 11 Jan	Delta
05 Dec - 10 Jan	Delta
05 Dec - 08 Jan	Delta
13 Dec - 29 Dec	Delta
18 Dec - 29 Dec	Delta
22 Dec - 09 Jan	Delta
18 Dec - 28 Dec	Delta
21 Dec - 10 Jan	Frontier Airlines
24 Dec - 06 Jan	Frontier Airlines
24 Dec - 27 Dec	Delta
19 Dec - 10 Jan	Delta

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

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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Chicago to Athens in December from 475€

Return flights