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

Return flights

01 Dec - 08 Dec	Icelandair
02 Dec - 10 Dec	Spirit Airlines
02 Dec - 09 Dec	Lufthansa
29 Dec - 07 Jan	Scandinavian Airlines
06 Dec - 13 Dec	United
28 Dec - 10 Jan	United
15 Dec - 24 Dec	Spirit Airlines
16 Dec - 10 Jan	Spirit Airlines
17 Dec - 28 Dec	Spirit Airlines
19 Dec - 30 Dec	Spirit Airlines
25 Dec - 31 Dec	jetBlue
16 Dec - 30 Dec	United
24 Dec - 02 Jan	Delta
29 Dec - 03 Jan	Icelandair
18 Dec - 03 Jan	Icelandair
18 Dec - 02 Jan	Icelandair
19 Dec - 03 Jan	United

Also check the deals for one-way flights from Detroit 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 Detroit to Dublin in December from 514€

Return flights