Cheapest return EWR–OPO flights, May

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

Return flights

25 May - 02 Jun Scandinavian Airlines
26 May - 09 Jun Icelandair
09 May - 16 May SWISS
25 May - 01 Jun Air Canada
31 May - 13 Jun FrenchBee
07 May - 21 May FrenchBee
19 May - 09 Jun Lufthansa
18 May - 08 Jun TAP
28 May - 14 Jun Icelandair
16 May - 14 Jun Air Transat
28 May - 02 Jun FrenchBee
25 May - 02 Jun United direct
16 May - 23 May FrenchBee
09 May - 30 May FrenchBee
17 May - 24 May FrenchBee
07 May - 16 May FrenchBee
18 May - 24 May FrenchBee
12 May - 31 May Air Transat
23 May - 30 May United direct
22 May - 27 May Air Caraibes

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

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