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

Return flights

31 Dec - 12 Jan	Lufthansa
31 Dec - 08 Jan	Austrian Airlines
31 Dec - 12 Jan	United	direct
31 Dec - 11 Jan	United
30 Dec - 08 Jan	Lufthansa
28 Dec - 08 Jan	Lufthansa
31 Dec - 07 Jan	SWISS
31 Dec - 11 Jan	Lufthansa	direct
30 Dec - 06 Jan	United
29 Dec - 08 Jan	SWISS
28 Dec - 29 Dec	Lufthansa
27 Dec - 29 Dec	SWISS
29 Dec - 31 Dec	Lufthansa	direct
27 Dec - 31 Dec	Lufthansa	direct
27 Dec - 29 Dec	Lufthansa	direct
28 Dec - 29 Dec	Lufthansa	direct

Also check the deals for one-way flights from Newark to Barcelona 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 Newark to Barcelona in December from 311€

Return flights