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

Return flights

08 Dec - 24 Dec	Austrian Airlines
31 Dec - 15 Jan	Lufthansa
07 Dec - 15 Dec	Lufthansa
08 Dec - 16 Dec	Air France
08 Dec - 15 Dec	Lufthansa
03 Dec - 08 Dec	Lufthansa
30 Dec - 13 Jan	British Airways
06 Dec - 16 Dec	Air France
01 Dec - 10 Dec	Lufthansa
01 Dec - 08 Dec	Lufthansa
05 Dec - 15 Dec	KLM
10 Dec - 23 Dec	British Airways
30 Dec - 09 Jan	Brussels Airlines
06 Dec - 18 Jan	Scandinavian Airlines
30 Dec - 08 Jan	Brussels Airlines
28 Dec - 08 Jan	Lufthansa
24 Dec - 13 Jan	British Airways
24 Dec - 22 Jan	British Airways
26 Dec - 14 Jan	American Airlines
27 Dec - 13 Jan	Lufthansa

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 371€

Return flights