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

Return flights

09 Sep - 16 Sep	Ryanair
11 Sep - 16 Sep	Ryanair
23 Sep - 24 Sep	Ryanair
30 Sep - 31 Oct	Condor	direct
02 Sep - 09 Sep	Ryanair
11 Sep - 15 Sep	Ryanair
25 Sep - 29 Sep	Ryanair
21 Sep - 24 Sep	Ryanair
13 Sep - 18 Sep	Lufthansa	direct
27 Sep - 07 Oct	Condor	direct
11 Sep - 15 Sep	Austrian Airlines	direct
01 Sep - 04 Sep	Condor	direct
25 Sep - 02 Oct	Condor	direct
21 Sep - 04 Oct	Ryanair
25 Sep - 13 Oct	Condor	direct
08 Sep - 04 Oct	Ryanair
29 Sep - 04 Oct	easyJet
08 Sep - 04 Oct	Condor	direct
21 Sep - 04 Oct	Condor	direct
29 Sep - 04 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 120€

Return flights