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

Return flights

10 Dec - 26 Dec	British Airways
12 Dec - 11 Jan	British Airways
10 Dec - 27 Dec	British Airways
10 Dec - 30 Dec	British Airways
10 Dec - 29 Dec	British Airways
10 Dec - 28 Dec	British Airways
30 Dec - 06 Jan	Delta
27 Dec - 17 Jan	Spirit Airlines
11 Dec - 03 Jan	Frontier Airlines
21 Dec - 27 Dec	Frontier Airlines
29 Dec - 04 Jan	Frontier Airlines
22 Dec - 04 Jan	Spirit Airlines
20 Dec - 28 Dec	Frontier Airlines
22 Dec - 03 Jan	Spirit Airlines
20 Dec - 03 Jan	Frontier Airlines

Also check the deals for one-way flights from Charlotte 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 Charlotte to Barcelona in December from 528€

Return flights