AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Barcelona (BCN) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	United
04 Dec - 08 Dec	Spirit Airlines
08 Dec - 15 Dec	United
27 Dec - 09 Jan	Frontier Airlines
15 Dec - 12 Jan	Breeze Airways
31 Dec - 10 Jan	Frontier Airlines
13 Dec - 20 Dec	United
25 Dec - 30 Dec	Lufthansa
18 Dec - 25 Dec	United
23 Dec - 30 Dec	United

Also check the deals for one-way flights from Raleigh-durham 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 Raleigh-durham to Barcelona in December from 404€

Return flights