AirHint found the following cheapest one-way flights from Newark (EWR) to Lisbon (LIS) in December 2025 (see full year).
One-Way flights
| 03 Dec | TAP | direct | |
| 01 Dec | TAP | direct | |
| 02 Dec | TAP | direct | |
| 31 Dec | TAP | direct | |
| 09 Dec | TAP | ||
| 07 Dec | TAP | ||
| 30 Dec | TAP | ||
| 04 Dec | TAP | direct | |
| 06 Dec | TAP | direct | |
| 12 Dec | Air Canada |
Also check the deals for return flights from Newark to Lisbon in December.
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