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

Return flights

02 Dec - 09 Dec	Lufthansa
02 Dec - 16 Dec	Lufthansa
03 Dec - 12 Dec	Lufthansa
07 Dec - 10 Dec	Scandinavian Airlines
01 Dec - 15 Dec	Lufthansa
09 Dec - 08 Jan	Lufthansa
04 Dec - 16 Dec	Lufthansa
08 Dec - 22 Dec	SWISS
03 Dec - 09 Dec	British Airways
04 Dec - 10 Dec	Lufthansa
01 Dec - 14 Dec	Lufthansa
31 Dec - 09 Jan	British Airways
28 Dec - 11 Jan	United
15 Dec - 08 Jan	Air France
05 Dec - 06 Jan	TAP
12 Dec - 08 Jan	TAP
25 Dec - 11 Jan	British Airways
28 Dec - 10 Jan	British Airways
25 Dec - 08 Jan	Delta
12 Dec - 09 Jan	Icelandair

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 376€

Return flights