AirHint found the following cheapest one-way flights from Chicago (ORD) to Prague (PRG) in December 2025 (see full year).
One-Way flights
| 09 Dec | Lufthansa | ||
| 29 Dec | Lufthansa | ||
| 27 Dec | Aer Lingus | ||
| 01 Dec | United | ||
| 31 Dec | United | ||
| 28 Dec | Scandinavian Airlines | ||
| 04 Dec | Delta | ||
| 24 Dec | TAP | ||
| 20 Dec | Spirit Airlines | ||
| 19 Dec | WestJet |
Also check the deals for return flights from Chicago to Prague in December.
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