AirHint found the following cheapest return flights from Porto (OPO) to New York (JFK) in August 2025 (see full year).

Return flights

28 Aug - 31 Aug	British Airways
28 Aug - 04 Sep	KLM
24 Aug - 31 Aug	British Airways
27 Aug - 31 Aug	Air France
26 Aug - 31 Aug	Delta
27 Aug - 03 Sep	Delta
27 Aug - 30 Aug	Delta
29 Aug - 09 Sep	Delta
28 Aug - 08 Sep	Brussels Airlines
30 Aug - 06 Sep	KLM
30 Aug - 09 Sep	Brussels Airlines
25 Aug - 01 Sep	KLM
30 Aug - 05 Sep	Brussels Airlines
29 Aug - 12 Sep	Brussels Airlines
25 Aug - 31 Aug	Air France
23 Aug - 31 Aug	KLM
30 Aug - 07 Sep	Delta
27 Aug - 28 Aug	TAP
22 Aug - 31 Aug	KLM
21 Aug - 27 Aug	TAP

Also check the deals for one-way flights from Porto to New York in August.

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 August from 495€

Return flights