AirHint found the following cheapest one-way flights from Lisbon (LIS) to Newark (EWR) in September 2025 (see full year).

One-Way flights

04 Sep	Vueling Airlines
29 Sep	Vueling Airlines
30 Sep	Vueling Airlines
24 Sep	Vueling Airlines
20 Sep	Vueling Airlines
03 Sep	Vueling Airlines
19 Sep	Vueling Airlines
26 Sep	Vueling Airlines
17 Sep	Vueling Airlines
21 Sep	Ryanair

Also check the deals for return flights from Lisbon to Newark in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from Lisbon to Newark in September from $321

One-Way flights