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

Return flights

10 Dec - 17 Dec	Air Canada
02 Dec - 09 Dec	TAP	direct
01 Dec - 12 Dec	TAP	direct
05 Dec - 17 Dec	TAP	direct
09 Dec - 16 Dec	Air Canada
16 Dec - 16 Jan	TAP	direct
15 Dec - 14 Jan	TAP	direct
16 Dec - 14 Jan	TAP	direct
16 Dec - 15 Jan	TAP	direct
09 Dec - 16 Dec	TAP	direct
28 Dec - 16 Jan	Air Canada
03 Dec - 15 Jan	FrenchBee
16 Dec - 19 Jan	TAP
16 Dec - 17 Jan	TAP
07 Dec - 27 Dec	TAP	direct
16 Dec - 19 Jan	TAP	direct
31 Dec - 06 Jan	Air Canada
21 Dec - 26 Dec	Scandinavian Airlines
23 Dec - 30 Dec	Turkish Airlines
21 Dec - 26 Dec	TAP	direct

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

Book a cheap hotel in Porto

Cheap car rent in Porto

Cheapest return flights from Newark to Porto in December from $389

Return flights