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

Return flights

06 Mar - 12 Mar	Scandinavian Airlines
09 Mar - 22 Mar	Scandinavian Airlines
09 Mar - 15 Mar	Scandinavian Airlines
04 Mar - 10 Mar	Delta
06 Mar - 10 Mar	Delta
06 Mar - 11 Mar	Delta
13 Mar - 16 Mar	Delta
06 Mar - 15 Mar	Delta
10 Mar - 18 Mar	Delta
03 Mar - 10 Mar	Delta
25 Mar - 03 Apr	Delta
31 Mar - 07 Apr	Delta
31 Mar - 20 Apr	Iberia
31 Mar - 08 Apr	Iberia
25 Mar - 01 Apr	Delta
29 Mar - 07 Apr	British Airways
25 Mar - 07 Apr	British Airways
26 Mar - 22 Apr	SWISS
26 Mar - 12 Apr	SWISS
26 Mar - 04 Apr	SWISS

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

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 March from $477

Return flights