AirHint found the following cheapest return flights from Chicago (ORD) to Algier (ALG) in December 2025 (see full year).
Return flights
| 31 Dec - 26 Jan | Lufthansa | ||
| 30 Dec - 27 Jan | Air France | ||
| 24 Dec - 11 Jan | Lufthansa | ||
| 25 Dec - 30 Dec | KLM | ||
| 28 Dec - 04 Jan | Lufthansa | ||
| 27 Dec - 03 Jan | Aer Lingus |
Also check the deals for one-way flights from Chicago to Algier in December.
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