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

Return flights

07 Oct - 14 Oct	Norse Atlantic Airways
08 Oct - 15 Oct	Norse Atlantic Airways
23 Oct - 30 Oct	Iberia
16 Oct - 23 Oct	TAP	direct
10 Oct - 27 Oct	Iberia
08 Oct - 13 Oct	Norse Atlantic Airways
23 Oct - 30 Oct	TAP	direct
01 Oct - 11 Oct	Norse Atlantic Airways
18 Oct - 27 Oct	TAP	direct
15 Oct - 24 Oct	TAP	direct
26 Oct - 08 Nov	TAP
24 Oct - 02 Nov	Iberia
26 Oct - 08 Nov	United	direct
24 Oct - 02 Nov	United	direct

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

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 October from $374

Return flights