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

Return flights

09 Mar - 19 Mar	Scandinavian Airlines
09 Mar - 15 Mar	Scandinavian Airlines
10 Mar - 18 Mar	Lufthansa
02 Mar - 10 Mar	Lufthansa
12 Mar - 16 Mar	Lufthansa
13 Mar - 17 Mar	Lufthansa
01 Mar - 09 Mar	Lufthansa
05 Mar - 10 Mar	Lufthansa
02 Mar - 09 Mar	Lufthansa
12 Mar - 17 Mar	Lufthansa
24 Mar - 01 Apr	Lufthansa
25 Mar - 01 Apr	Delta
31 Mar - 07 Apr	Delta
20 Mar - 06 Apr	SWISS
27 Mar - 06 Apr	KLM
26 Mar - 02 Apr	KLM
27 Mar - 02 Apr	Delta
27 Mar - 05 Apr	Delta
24 Mar - 01 Apr	Brussels Airlines	direct
29 Mar - 06 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 $388

Return flights