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

Return flights

10 Dec - 16 Dec	Lufthansa	direct
09 Dec - 16 Dec	Lufthansa	direct
02 Dec - 11 Dec	Lufthansa	direct
09 Dec - 17 Dec	Lufthansa	direct
03 Dec - 10 Dec	Lufthansa	direct
01 Dec - 10 Dec	Lufthansa	direct
10 Dec - 17 Dec	United	direct
02 Dec - 16 Dec	Lufthansa	direct
04 Dec - 09 Dec	TAP
06 Dec - 12 Dec	TAP
09 Dec - 24 Jan	TAP
09 Dec - 24 Jan	United	direct
30 Dec - 24 Jan	Air Canada
31 Dec - 11 Jan	Austrian Airlines
09 Dec - 09 Jan	Lufthansa
05 Dec - 10 Jan	TAP
29 Dec - 24 Jan	Austrian Airlines
31 Dec - 10 Jan	Scandinavian Airlines
15 Dec - 12 Jan	Lufthansa
30 Dec - 17 Jan	Austrian Airlines

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 288€

Return flights