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

Return flights

15 Oct - 21 Oct	Spirit Airlines
16 Oct - 21 Oct	Spirit Airlines
03 Oct - 10 Oct	Spirit Airlines
02 Oct - 11 Oct	Spirit Airlines
21 Oct - 28 Oct	jetBlue
30 Oct - 06 Nov	jetBlue
20 Oct - 27 Oct	jetBlue
22 Oct - 29 Oct	jetBlue
28 Oct - 04 Nov	jetBlue
23 Oct - 30 Oct	jetBlue
24 Oct - 31 Oct	jetBlue
27 Oct - 03 Nov	jetBlue
31 Oct - 07 Nov	jetBlue
04 Oct - 11 Oct	jetBlue
25 Oct - 01 Nov	jetBlue
29 Oct - 05 Nov	Aer Lingus
26 Oct - 02 Nov	jetBlue

Also check the deals for one-way flights from Detroit to Dublin in October.

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 October from $480

Return flights