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

Return flights

24 Sep - 01 Oct	easyJet
22 Sep - 01 Oct	Ryanair	direct
19 Sep - 24 Sep	Ryanair	direct
26 Sep - 01 Oct	Ryanair	direct
19 Sep - 22 Sep	Ryanair	direct
17 Sep - 24 Sep	Ryanair	direct
15 Sep - 22 Sep	Ryanair	direct
22 Sep - 03 Oct	Ryanair	direct
22 Sep - 24 Sep	Ryanair	direct
29 Sep - 01 Oct	Ryanair
29 Sep - 03 Oct	Ryanair
26 Sep - 03 Oct	Ryanair	direct
19 Sep - 23 Sep	Ryanair
30 Sep - 03 Oct	easyJet
24 Sep - 27 Sep	easyJet
15 Sep - 17 Sep	Ryanair
29 Sep - 08 Oct	Ryanair
24 Sep - 26 Sep	easyJet
15 Sep - 20 Sep	Ryanair
29 Sep - 06 Oct	Ryanair

Also check the deals for one-way flights from Basel 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 Basel to Dublin in September from 97€

Return flights