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

Return flights

14 Oct - 21 Oct	WestJet
20 Oct - 05 Nov	Air France
23 Oct - 30 Oct	Spirit Airlines
28 Oct - 04 Nov	British Airways
03 Oct - 06 Oct	Spirit Airlines
29 Oct - 05 Nov	KLM
05 Oct - 09 Oct	Spirit Airlines
24 Oct - 31 Oct	Spirit Airlines
27 Oct - 03 Nov	Air France
22 Oct - 29 Oct	Frontier Airlines
15 Oct - 22 Oct	Spirit Airlines
10 Oct - 22 Oct	Frontier Airlines
13 Oct - 20 Oct	Frontier Airlines
26 Oct - 02 Nov	British Airways
30 Oct - 06 Nov	British Airways
31 Oct - 07 Nov	Finnair
01 Oct - 08 Oct	Spirit Airlines
25 Oct - 01 Nov	WestJet

Also check the deals for one-way flights from Houston 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 Houston to Dublin in October from $511

Return flights