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	United	direct
27 Dec - 20 Jan	Air Canada
03 Dec - 12 Dec	United
09 Dec - 16 Dec	United
30 Dec - 08 Jan	United
01 Dec - 08 Jan	United
04 Dec - 07 Dec	TAP
04 Dec - 08 Dec	TAP
10 Dec - 14 Dec	United	direct
08 Dec - 14 Dec	United
11 Dec - 15 Dec	TAP
27 Dec - 12 Jan	Air Canada
04 Dec - 09 Dec	TAP
08 Dec - 12 Dec	Air Canada
29 Dec - 09 Jan	United
28 Dec - 09 Jan	United
11 Dec - 08 Jan	United
28 Dec - 17 Jan	United
09 Dec - 17 Jan	United
23 Dec - 13 Jan	Air Canada

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 297€

Return flights