AirHint found the following cheapest one-way flights from Chicago (ORD) to Berlin (BER) in December 2025 (see full year).
One-Way flights
| 31 Dec | Icelandair | ||
| 07 Dec | Icelandair | ||
| 14 Dec | Spirit Airlines | ||
| 05 Dec | TAP | ||
| 29 Dec | Lufthansa | ||
| 17 Dec | Icelandair | ||
| 26 Dec | Austrian Airlines |
Also check the deals for return flights from Chicago to Berlin in December.
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