AirHint found the following cheapest one-way flights from New York (LGA) to Lisbon (LIS) in December 2025 (see full year).
One-Way flights
| 30 Dec | Air Canada | ||
| 31 Dec | Lufthansa | ||
| 12 Dec | Air Canada | ||
| 24 Dec | Air Canada | ||
| 27 Dec | Air Canada | ||
| 11 Dec | KLM | ||
| 15 Dec | Spirit Airlines | ||
| 28 Dec | Lufthansa | ||
| 26 Dec | Delta | ||
| 25 Dec | Air Canada |
Also check the deals for return flights from New York to Lisbon in December.
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