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

Return flights

26 Dec - 17 Jan	Scandinavian Airlines
17 Dec - 25 Dec	Scandinavian Airlines
08 Dec - 22 Dec	SWISS
11 Dec - 25 Dec	Scandinavian Airlines
25 Dec - 08 Jan	Scandinavian Airlines
22 Dec - 20 Jan	British Airways
15 Dec - 05 Jan	Austrian Airlines
15 Dec - 04 Jan	Austrian Airlines
22 Dec - 05 Jan	KLM
19 Dec - 28 Dec	TAP

Also check the deals for one-way flights from Chicago to Berlin 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 Berlin in December from 483€

Return flights