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

Return flights

07 May - 14 May	Scandinavian Airlines
04 May - 11 May	Air Canada
06 May - 13 May	Air Canada
10 May - 18 May	Air Europa
07 May - 10 May	Scandinavian Airlines
07 May - 21 May	Air Europa
11 May - 20 May	TAP
02 May - 09 May	Air Europa
08 May - 15 May	TAP
18 May - 25 May	Aer Lingus
30 May - 06 Jun	Air Canada
25 May - 01 Jun	Aer Lingus
29 May - 05 Jun	Lufthansa
31 May - 10 Jun	Air Europa
26 May - 03 Jun	Finnair
21 May - 05 Jun	Air Europa
28 May - 02 Jun	FrenchBee
21 May - 04 Jun	TAP
26 May - 06 Jun	FrenchBee
28 May - 06 Jun	Norse Atlantic Airways (UK)

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

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 May from 359€

Return flights