Cheapest return flights from Newark to Porto in September from $551

Best time to book flights for Newark (EWR) to Porto (OPO) flights at AirHint

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

Return flights

20 Sep - 29 Sep TAP
29 Sep - 06 Oct TAP
29 Sep - 06 Oct TAP direct
20 Sep - 29 Sep TAP direct
12 Sep - 03 Oct FrenchBee
12 Sep - 03 Oct TAP direct
03 Sep - 10 Sep Turkish Airlines
01 Sep - 07 Sep SWISS
03 Sep - 10 Sep TAP direct
01 Sep - 07 Sep TAP direct

Also check the deals for one-way flights from Newark to Porto 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.

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