AirHint found the following cheapest return flights from Porto (OPO) to New York (JFK) in September 2026 (see full year).

Return flights

03 Sep - 07 Sep	KLM
16 Sep - 23 Sep	KLM
15 Sep - 21 Sep	KLM
10 Sep - 19 Sep	Delta
21 Sep - 28 Sep	Air France
03 Sep - 19 Sep	Delta
18 Sep - 26 Sep	Iberia
12 Sep - 19 Sep	Iberia
19 Sep - 26 Sep	Iberia
07 Sep - 14 Sep	Delta
30 Sep - 06 Oct	Iberia
30 Sep - 04 Oct	Iberia
30 Sep - 05 Oct	KLM

Also check the deals for one-way flights from Porto to New York 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 return flights from Porto to New York in September from $472

Return flights