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

Return flights

01 Dec - 10 Dec	United	direct
10 Dec - 18 Dec	Air Canada
10 Dec - 17 Dec	Air Canada
29 Dec - 15 Jan	Air Canada
10 Dec - 23 Dec	United
01 Dec - 09 Dec	United
07 Dec - 16 Dec	TAP
01 Dec - 08 Dec	SWISS
12 Dec - 23 Dec	Icelandair
31 Dec - 07 Jan	United
11 Dec - 23 Dec	Scandinavian Airlines
13 Dec - 23 Dec	Scandinavian Airlines
13 Dec - 25 Jan	Scandinavian Airlines
22 Dec - 21 Jan	United
22 Dec - 01 Jan	United
21 Dec - 01 Jan	United
23 Dec - 01 Jan	United
20 Dec - 06 Jan	Air Canada
19 Dec - 19 Jan	Scandinavian Airlines
18 Dec - 07 Jan	Scandinavian 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 296€

Return flights