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

Return flights

17 Sep - 21 Sep	Ryanair
17 Sep - 02 Oct	Ryanair
24 Sep - 02 Oct	Ryanair
17 Sep - 18 Sep	Ryanair
24 Sep - 28 Sep	Ryanair
11 Sep - 18 Sep	Ryanair
23 Sep - 09 Oct	Wizz Air Malta
23 Sep - 07 Oct	Wizz Air Malta
29 Sep - 30 Sep	Wizz Air Malta
11 Sep - 21 Sep	Ryanair
22 Sep - 25 Sep	Wizz Air Malta
24 Sep - 30 Sep	Ryanair
16 Sep - 18 Sep	Ryanair
11 Sep - 17 Sep	Ryanair
23 Sep - 09 Oct	Austrian Airlines	direct
23 Sep - 07 Oct	Austrian Airlines	direct
17 Sep - 02 Oct	SWISS	direct
24 Sep - 02 Oct	SWISS	direct

Also check the deals for one-way flights from Vienna 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 Vienna to Basel in September from 133€

Return flights