AirHint found the following cheapest return flights from Cleveland (CLE) to Lisbon (LIS) in December 2025 (see full year).
Return flights
| 07 Dec - 14 Dec | Air Canada | ||
| 30 Dec - 24 Jan | United | ||
| 15 Dec - 23 Dec | Air France | ||
| 16 Dec - 23 Dec | Air France | ||
| 20 Dec - 04 Jan | Frontier Airlines | ||
| 24 Dec - 03 Jan | Frontier Airlines | ||
| 19 Dec - 04 Jan | Aer Lingus |
Also check the deals for one-way flights from Cleveland to Lisbon in December.
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