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

Return flights

31 Oct - 30 Nov	Aer Lingus	direct
29 Oct - 10 Nov	Aer Lingus	direct
28 Oct - 29 Oct	Aer Lingus	direct
28 Oct - 30 Oct	Aer Lingus	direct
31 Oct - 03 Nov	Aer Lingus	direct
29 Oct - 07 Nov	Aer Lingus	direct
26 Oct - 29 Oct	Aer Lingus	direct
26 Oct - 30 Oct	Aer Lingus	direct
21 Oct - 22 Oct	Aer Lingus	direct
30 Oct - 06 Nov	Aer Lingus	direct
30 Oct - 03 Nov	Aer Lingus	direct
24 Oct - 29 Oct	easyJet
21 Oct - 21 Oct	Aer Lingus
23 Oct - 31 Oct	easyJet
31 Oct - 01 Nov	KLM
30 Oct - 01 Nov	KLM
31 Oct - 02 Nov	Aer Lingus	direct
29 Oct - 02 Nov	KLM
22 Oct - 29 Oct	Aer Lingus
27 Oct - 31 Oct	KLM

Also check the deals for one-way flights from Southampton 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 Southampton to Dublin in October from 145€

Return flights