AirHint found the following cheapest return flights from Southend (SEN) to Dublin (DUB) in September 2025 (see full year).

Return flights

17 Sep - 18 Sep	easyJet
26 Sep - 03 Oct	easyJet
03 Sep - 10 Sep	easyJet
04 Sep - 26 Sep	easyJet
11 Sep - 18 Sep	easyJet
19 Sep - 22 Sep	easyJet
15 Sep - 19 Sep	easyJet
28 Sep - 10 Oct	easyJet
05 Sep - 08 Sep	easyJet
08 Sep - 11 Sep	easyJet
08 Sep - 15 Sep	easyJet
15 Sep - 18 Sep	easyJet
15 Sep - 08 Oct	easyJet
29 Sep - 03 Oct	easyJet
22 Sep - 06 Oct	easyJet
28 Sep - 01 Oct	easyJet
28 Sep - 06 Oct	easyJet

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

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 Southend to Dublin in September from $233

Return flights