AirHint found the following cheapest one-way flights from Newark (EWR) to Lisbon (LIS) in May 2026 (see full year).
One-Way flights
| 03 May | Aer Lingus | ||
| 04 May | Aer Lingus | ||
| 17 May | Iberia | ||
| 19 May | Iberia | ||
| 20 May | Iberia | ||
| 10 May | Iberia | ||
| 06 May | Aer Lingus | ||
| 07 May | TAP | ||
| 09 May | FrenchBee | ||
| 15 May | FrenchBee |
Also check the deals for return flights from Newark to Lisbon in May.
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