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

Return flights

02 Mar - 09 Mar	TAP	direct
11 Mar - 16 Mar	TAP	direct
05 Mar - 11 Mar	SWISS
06 Mar - 14 Mar	SWISS
28 Mar - 04 Apr	SWISS
27 Mar - 03 Apr	SWISS
28 Mar - 06 Apr	SWISS
29 Mar - 06 Apr	SWISS
12 Mar - 17 Mar	TAP	direct
29 Mar - 06 Apr	Brussels Airlines	direct
05 Mar - 11 Mar	TAP	direct
02 Mar - 06 Mar	Lufthansa
01 Mar - 05 Mar	SWISS
02 Mar - 06 Mar	Brussels Airlines	direct
06 Mar - 14 Mar	TAP	direct
27 Mar - 03 Apr	TAP	direct

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 $501

Return flights