AirHint found the following cheapest return flights from Porto (OPO) to Newark (EWR) in December 2025 (see full year).

Return flights

01 Dec - 04 Dec	Scandinavian Airlines
01 Dec - 11 Dec	Scandinavian Airlines
22 Dec - 25 Jan	Brussels Airlines
05 Dec - 11 Dec	Scandinavian Airlines
01 Dec - 14 Dec	Scandinavian Airlines
05 Dec - 07 Dec	Scandinavian Airlines
09 Dec - 14 Dec	TAP	direct
11 Dec - 14 Dec	TAP	direct
07 Dec - 14 Dec	TAP	direct
08 Dec - 14 Dec	TAP	direct
01 Dec - 14 Dec	TAP	direct
15 Dec - 07 Jan	Lufthansa
27 Dec - 06 Jan	Lufthansa
27 Dec - 01 Jan	Lufthansa
26 Dec - 01 Jan	SWISS
25 Dec - 08 Jan	SWISS
22 Dec - 12 Jan	United
26 Dec - 06 Jan	SWISS
21 Dec - 12 Jan	Lufthansa
29 Dec - 05 Jan	SWISS

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

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 December from $402

Return flights