AirHint found the following cheapest return flights from Atlanta (ATL) to Dublin (DUB) in December 2025 (see full year).

Return flights

01 Dec - 12 Dec	Delta
05 Dec - 10 Dec	Delta
31 Dec - 24 Jan	Air France
04 Dec - 09 Dec	Delta
15 Dec - 23 Dec	British Airways
14 Dec - 22 Dec	Air France	direct
15 Dec - 10 Jan	United
16 Dec - 10 Jan	Air Canada
07 Dec - 27 Dec	Lufthansa
29 Dec - 06 Jan	Delta
24 Dec - 06 Jan	Delta
02 Dec - 09 Dec	Aer Lingus
31 Dec - 07 Jan	Aer Lingus
04 Dec - 11 Dec	Aer Lingus
08 Dec - 15 Dec	Aer Lingus
25 Dec - 31 Dec	Delta
29 Dec - 05 Jan	Frontier Airlines
18 Dec - 10 Jan	Frontier Airlines
20 Dec - 10 Jan	Frontier Airlines
10 Dec - 03 Jan	Frontier Airlines

Also check the deals for one-way flights from Atlanta to Dublin 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 Atlanta to Dublin in December from 403€

Return flights