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

Return flights

14 May - 18 May	Scandinavian Airlines
05 May - 12 May	Iberia
01 May - 10 May	Iberia
13 May - 17 May	Iberia
01 May - 03 May	Iberia
01 May - 04 May	Iberia
01 May - 06 May	Iberia
01 May - 07 May	Iberia
10 May - 27 May	Iberia
23 May - 28 May	Iberia
31 May - 07 Jun	Iberia
30 May - 11 Jun	Iberia
30 May - 04 Jun	Iberia
29 May - 05 Jun	Iberia
31 May - 22 Jun	United
31 May - 11 Jun	United
29 May - 05 Jun	TAP	direct
31 May - 07 Jun	Brussels Airlines	direct
30 May - 05 Jun	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 $466

Return flights