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

Return flights

06 Dec - 14 Dec	Delta
04 Dec - 23 Dec	Frontier Airlines
29 Dec - 13 Jan	Frontier Airlines
22 Dec - 10 Jan	Frontier Airlines
06 Dec - 08 Dec	Frontier Airlines
18 Dec - 18 Jan	Frontier Airlines
19 Dec - 19 Jan	Frontier Airlines
03 Dec - 22 Dec	Delta
22 Dec - 09 Jan	Frontier Airlines
21 Dec - 09 Jan	Frontier Airlines
28 Dec - 12 Jan	Delta
28 Dec - 11 Jan	Delta
14 Dec - 04 Jan	Frontier Airlines
17 Dec - 14 Jan	Delta
05 Dec - 07 Dec	Delta
05 Dec - 10 Dec	Delta
07 Dec - 19 Dec	Delta
11 Dec - 29 Dec	Delta
24 Dec - 27 Dec	Delta
12 Dec - 30 Dec	Delta

Also check the deals for one-way flights from Chicago to Warsaw 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.

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Cheapest return flights from Chicago to Warsaw in December from $607

Return flights