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

Return flights

01 Dec - 11 Dec	Scandinavian Airlines
09 Dec - 16 Dec	United
01 Dec - 11 Dec	LOT	direct
16 Dec - 23 Dec	United
09 Dec - 16 Dec	LOT	direct
23 Dec - 06 Jan	British Airways
23 Dec - 30 Dec	Lufthansa
22 Dec - 29 Dec	SWISS
13 Dec - 04 Jan	Scandinavian Airlines
29 Dec - 05 Jan	United
16 Dec - 23 Dec	LOT	direct
19 Dec - 26 Dec	United
23 Dec - 30 Dec	LOT	direct
13 Dec - 04 Jan	LOT	direct
23 Dec - 06 Jan	LOT	direct

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 336€

Return flights