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

Return flights

01 Dec - 10 Dec	Delta
01 Dec - 16 Dec	Delta
05 Dec - 13 Dec	Delta
25 Dec - 20 Jan	Delta
25 Dec - 12 Jan	Delta
25 Dec - 07 Jan	Frontier Airlines
25 Dec - 11 Jan	Delta
25 Dec - 10 Jan	Frontier Airlines
25 Dec - 09 Jan	Frontier Airlines
25 Dec - 08 Jan	Frontier Airlines
03 Dec - 17 Dec	Delta
25 Dec - 05 Jan	Frontier Airlines
24 Dec - 07 Jan	Frontier Airlines
25 Dec - 06 Jan	Frontier Airlines
22 Dec - 29 Dec	Delta
23 Dec - 30 Dec	Delta
16 Dec - 29 Dec	Delta
17 Dec - 30 Dec	Delta
20 Dec - 29 Dec	Delta
24 Dec - 31 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 521€

Return flights