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

Return flights

09 Mar - 17 Mar	Scandinavian Airlines
09 Mar - 19 Mar	Scandinavian Airlines
09 Mar - 15 Mar	Scandinavian Airlines
16 Mar - 22 Mar	Scandinavian Airlines
16 Mar - 24 Mar	Scandinavian Airlines
06 Mar - 15 Mar	Scandinavian Airlines
10 Mar - 17 Mar	Vueling Airlines
24 Mar - 29 Mar	TAP	direct
02 Mar - 16 Mar	TAP	direct
01 Mar - 10 Mar	TAP	direct
25 Mar - 01 Apr	Delta
31 Mar - 06 Apr	Lufthansa
24 Mar - 02 Apr	Delta
26 Mar - 03 Apr	Lufthansa
30 Mar - 06 Apr	SWISS
29 Mar - 05 Apr	Delta
28 Mar - 05 Apr	KLM
27 Mar - 01 Apr	Delta
27 Mar - 02 Apr	Delta
27 Mar - 03 Apr	Delta

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 329€

Return flights