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

Return flights

06 May - 13 May	Scandinavian Airlines
08 May - 19 May	Scandinavian Airlines
06 May - 12 May	Scandinavian Airlines
15 May - 17 May	Scandinavian Airlines
19 May - 26 May	Lufthansa
29 May - 01 Jun	SWISS
02 May - 06 May	Scandinavian Airlines
25 May - 13 Jun	Scandinavian Airlines
04 May - 11 May	United	direct
15 May - 22 May	United
16 May - 24 May	SWISS
10 May - 22 May	SWISS
25 May - 13 Jun	Lufthansa	direct

Also check the deals for one-way flights from Porto to Newark 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 Porto to Newark in May from $438

Return flights