AirHint found the following cheapest return flights from Karlsruhe/Baden-Baden (FKB) to Vienna (VIE) in September 2025 (see full year).

Return flights

19 Sep - 22 Sep	Ryanair
04 Sep - 09 Sep	Ryanair
13 Sep - 15 Sep	Ryanair
18 Sep - 19 Sep	Ryanair
04 Sep - 08 Sep	Ryanair
06 Sep - 08 Sep	Ryanair
12 Sep - 14 Sep	Ryanair
22 Sep - 28 Sep	Ryanair
25 Sep - 28 Sep	Ryanair
29 Sep - 06 Oct	Ryanair
05 Sep - 07 Sep	Ryanair
28 Sep - 11 Oct	Ryanair
28 Sep - 05 Oct	Ryanair

Also check the deals for one-way flights from Karlsruhe/Baden-Baden to Vienna 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 Karlsruhe/Baden-Baden to Vienna in September from 102€

Return flights