Cheapest return flights from Southampton to Dublin in September from 139€

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

Return flights

26 Sep - 30 Sep Aer Lingus direct
09 Sep - 10 Sep Aer Lingus direct
02 Sep - 09 Sep KLM
04 Sep - 09 Sep KLM
25 Sep - 27 Sep KLM
03 Sep - 06 Sep KLM
01 Sep - 25 Sep KLM
03 Sep - 05 Sep KLM
05 Sep - 07 Sep Aer Lingus direct
16 Sep - 17 Sep Aer Lingus direct
30 Sep - 02 Oct Aer Lingus direct

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

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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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