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

Return flights

05 May - 14 May	SWISS
15 May - 25 May	United	direct
01 May - 07 May	British Airways
08 May - 15 May	SWISS
30 May - 10 Jun	SWISS
23 May - 30 May	SWISS
01 May - 08 May	SWISS
31 May - 10 Jun	SWISS
09 May - 16 May	SWISS
17 May - 30 May	Lufthansa
05 May - 14 May	United	direct
01 May - 08 May	TAP	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 $533

Return flights