Cheapest return flights from Newark to Lisbon in September from $454

AirHint found the following cheapest return flights from Newark (EWR) to Lisbon (LIS) in September 2026 (see full year).

Return flights

16 Sep - 29 Sep Air Canada
30 Sep - 06 Oct SWISS
15 Sep - 23 Sep Air Canada
06 Sep - 23 Sep Air Canada
02 Sep - 26 Sep British Airways
05 Sep - 14 Sep British Airways
16 Sep - 20 Sep TAP
05 Sep - 14 Sep TAP direct
30 Sep - 06 Oct Brussels Airlines direct

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

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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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