AirHint found the following cheapest one-way flights from Southampton (SOU) to Dublin (DUB) in August 2025 (see full year).

One-Way flights

31 Aug	easyJet
30 Aug	easyJet
29 Aug	easyJet
24 Aug	easyJet
14 Aug	Aer Lingus	direct
19 Aug	Aer Lingus	direct
13 Aug	Aer Lingus	direct
12 Aug	Aer Lingus	direct
15 Aug	Aer Lingus	direct
22 Aug	Aer Lingus	direct

Also check the deals for return 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 one-way flights from Southampton to Dublin in August from $78

One-Way flights