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

Return flights

12 Sep - 15 Sep	Ryanair
20 Sep - 25 Sep	Ryanair
25 Sep - 04 Oct	Ryanair
28 Sep - 01 Oct	Ryanair
09 Sep - 16 Sep	Ryanair
28 Sep - 04 Oct	Ryanair
28 Sep - 30 Sep	Ryanair
30 Sep - 08 Oct	Ryanair
30 Sep - 04 Oct	Ryanair
24 Sep - 28 Sep	Condor	direct
15 Sep - 21 Sep	Condor	direct
23 Sep - 27 Sep	Condor	direct
21 Sep - 24 Sep	Ryanair
22 Sep - 27 Sep	Condor	direct
18 Sep - 28 Sep	Condor	direct
30 Sep - 06 Oct	Condor	direct
30 Sep - 08 Oct	Austrian Airlines	direct
29 Sep - 06 Oct	Austrian Airlines	direct
29 Sep - 02 Oct	Condor	direct
27 Sep - 01 Oct	Condor	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Vienna in September from $130

Return flights