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

Return flights

12 Aug - 19 Aug	Air Canada
11 Aug - 18 Aug	Air Canada
06 Aug - 13 Aug	Air Transat
05 Aug - 12 Aug	Air Canada
20 Aug - 05 Sep	Air Transat
21 Aug - 07 Sep	Air Transat
08 Aug - 15 Aug	Air Canada
13 Aug - 20 Aug	Air Transat
07 Aug - 14 Aug	Air Transat
19 Aug - 23 Aug	Air Canada
09 Aug - 16 Aug	Air Canada
21 Aug - 30 Aug	Air Canada

Also check the deals for one-way flights from New York to Porto 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 New York to Porto in August from 624€

Return flights