AirHint found the following cheapest return flights from Southampton (SOU) to Dublin (DUB) in August 2026 (see full year).

Return flights

13 Aug - 18 Aug	KLM
28 Aug - 02 Sep	KLM
26 Aug - 30 Aug	easyJet
01 Aug - 08 Aug	KLM
28 Aug - 30 Aug	KLM
01 Aug - 08 Aug	Aer Lingus	direct
26 Aug - 26 Aug	Aer Lingus	direct
13 Aug - 18 Aug	Aer Lingus	direct
22 Aug - 23 Aug	Aer Lingus	direct
20 Aug - 23 Aug	Aer Lingus	direct
22 Aug - 24 Aug	Aer Lingus	direct
28 Aug - 02 Sep	Aer Lingus	direct

Also check the deals for one-way flights from Southampton to Dublin in August.

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 August from $198

Return flights