AirHint found the following cheapest one-way flights from Atlanta (ATL) to Barcelona (BCN) in December 2025 (see full year).

One-Way flights

14 Dec	Spirit Airlines
15 Dec	Spirit Airlines
30 Dec	WestJet
16 Dec	Frontier Airlines
17 Dec	Frontier Airlines
24 Dec	Spirit Airlines
28 Dec	Frontier Airlines
27 Dec	WestJet
18 Dec	Frontier Airlines
23 Dec	Spirit Airlines

Also check the deals for return flights from Atlanta 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 one-way flights from Atlanta to Barcelona in December from 246€

One-Way flights