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

Return flights

24 Sep - 01 Oct	Ryanair	direct
26 Sep - 03 Oct	Ryanair	direct
24 Sep - 29 Sep	Ryanair
17 Sep - 24 Sep	Ryanair
24 Sep - 26 Sep	Ryanair	direct
26 Sep - 06 Oct	Ryanair	direct
30 Sep - 06 Oct	Ryanair
22 Sep - 23 Sep	Ryanair
16 Sep - 19 Sep	Ryanair
26 Sep - 30 Sep	Ryanair
17 Sep - 19 Sep	Ryanair
30 Sep - 02 Oct	Ryanair
26 Sep - 29 Sep	Ryanair
23 Sep - 24 Sep	Aer Lingus
29 Sep - 10 Oct	Ryanair	direct
23 Sep - 26 Sep	Ryanair
28 Sep - 02 Oct	Ryanair
26 Sep - 15 Oct	Vueling Airlines
19 Sep - 08 Oct	Vueling Airlines
26 Sep - 07 Oct	Vueling Airlines

Also check the deals for one-way flights from Dublin to Basel 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 Dublin to Basel in September from 85€

Return flights