Cheapest return flights from Newark to Lisbon in September from 356€

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

Return flights

28 Sep - 05 Oct Air Canada
22 Sep - 15 Oct TAP direct
23 Sep - 30 Sep SWISS
26 Sep - 30 Sep SWISS
19 Sep - 30 Sep SWISS
21 Sep - 29 Sep SWISS
20 Sep - 29 Sep SWISS
18 Sep - 23 Sep SWISS
23 Sep - 29 Sep SWISS
22 Sep - 29 Sep SWISS
21 Sep - 30 Sep SWISS
19 Sep - 24 Sep SWISS
23 Sep - 01 Oct SWISS
26 Sep - 05 Oct SWISS
23 Sep - 08 Oct TAP
24 Sep - 08 Oct TAP
30 Sep - 10 Oct Delta
25 Sep - 03 Oct TAP
25 Sep - 17 Oct TAP
25 Sep - 05 Oct Air France

Also check the deals for one-way flights from Newark to Lisbon in September.

Skyscanner

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Feel free to contact us with any feedback or request another flight research.