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

Return flights

11 Dec - 15 Dec	Lufthansa
05 Dec - 10 Jan	United
11 Dec - 10 Jan	Lufthansa
04 Dec - 10 Dec	United
04 Dec - 08 Dec	United
07 Dec - 14 Dec	Delta
09 Dec - 06 Jan	Spirit Airlines
11 Dec - 08 Jan	Spirit Airlines
09 Dec - 13 Dec	Spirit Airlines
05 Dec - 06 Jan	Spirit Airlines
25 Dec - 12 Jan	Icelandair
31 Dec - 04 Jan	Spirit Airlines
25 Dec - 06 Jan	Icelandair
16 Dec - 23 Dec	Spirit Airlines
16 Dec - 22 Dec	Spirit Airlines
25 Dec - 31 Dec	Icelandair
16 Dec - 20 Dec	Spirit Airlines
19 Dec - 05 Jan	Spirit Airlines
26 Dec - 02 Jan	KLM

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 361€

Return flights