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

Return flights

05 Dec - 14 Dec	Scandinavian Airlines
05 Dec - 07 Dec	Scandinavian Airlines
04 Dec - 09 Dec	Delta
04 Dec - 08 Dec	Delta
03 Dec - 08 Dec	Delta
03 Dec - 09 Dec	Delta
02 Dec - 09 Dec	Air France
05 Dec - 08 Dec	Delta
08 Dec - 14 Dec	Scandinavian Airlines
12 Dec - 14 Dec	Scandinavian Airlines
18 Dec - 11 Jan	SWISS
25 Dec - 07 Jan	Lufthansa
25 Dec - 01 Jan	TAP	direct
24 Dec - 07 Jan	TAP
22 Dec - 11 Jan	British Airways
22 Dec - 08 Jan	British Airways
26 Dec - 01 Jan	TAP	direct
23 Dec - 01 Jan	TAP	direct
22 Dec - 01 Jan	TAP	direct
20 Dec - 05 Jan	KLM

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 376€

Return flights