Cheapest return flights from Newark to Porto in September from $553

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

27 Sep - 16 Oct TAP
30 Sep - 14 Oct TAP
21 Sep - 25 Sep FrenchBee
08 Sep - 14 Sep FrenchBee
11 Sep - 14 Sep FrenchBee
22 Sep - 25 Sep FrenchBee
30 Sep - 14 Oct United direct
27 Sep - 16 Oct Brussels Airlines direct
08 Sep - 14 Sep Brussels Airlines direct
11 Sep - 14 Sep Brussels Airlines 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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