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

Return flights

30 Dec - 31 Jan	Air France
25 Dec - 17 Jan	Air France
15 Dec - 10 Jan	Air France
06 Dec - 13 Dec	Air France
15 Dec - 07 Jan	Delta
30 Dec - 06 Jan	Delta
10 Dec - 18 Dec	Delta
25 Dec - 31 Dec	Delta
24 Dec - 31 Dec	Delta
26 Dec - 09 Jan	Delta
23 Dec - 06 Jan	Delta
25 Dec - 01 Jan	Delta
11 Dec - 21 Dec	Air France
22 Dec - 31 Dec	Delta
26 Dec - 31 Dec	KLM
18 Dec - 28 Dec	Delta
27 Dec - 01 Jan	Delta
26 Dec - 29 Dec	KLM
25 Dec - 02 Jan	Air France
06 Dec - 27 Dec	Air France

Also check the deals for one-way flights from Dallas 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 Dallas to Dublin in December from 480€

Return flights