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

Return flights

05 Dec - 11 Dec	Scandinavian Airlines
01 Dec - 11 Dec	Scandinavian Airlines
05 Dec - 14 Dec	Scandinavian Airlines
08 Dec - 11 Dec	Scandinavian Airlines
08 Dec - 14 Dec	Scandinavian Airlines
03 Dec - 09 Dec	Lufthansa
03 Dec - 08 Dec	Lufthansa
05 Dec - 10 Dec	TAP	direct
04 Dec - 10 Dec	United
05 Dec - 12 Dec	TAP	direct
19 Dec - 12 Jan	SWISS
19 Dec - 13 Jan	SWISS
18 Dec - 06 Jan	United
24 Dec - 01 Jan	Lufthansa
30 Dec - 07 Jan	SWISS
30 Dec - 06 Jan	SWISS
19 Dec - 06 Jan	SWISS
28 Dec - 13 Jan	Lufthansa
19 Dec - 05 Jan	SWISS
30 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 310€

Return flights