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

Return flights

17 Sep - 20 Sep	Wizz Air UK
09 Sep - 16 Sep	Ryanair
01 Sep - 05 Sep	Ryanair
01 Sep - 11 Sep	Ryanair
15 Sep - 23 Sep	Ryanair
08 Sep - 15 Sep	Ryanair
08 Sep - 15 Sep	Austrian Airlines	direct
01 Sep - 11 Sep	Austrian Airlines	direct
15 Sep - 23 Sep	Austrian Airlines	direct
28 Sep - 05 Oct	Austrian Airlines	direct
06 Sep - 10 Sep	Ryanair
26 Sep - 03 Oct	Ryanair

Also check the deals for one-way flights from Prague 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 Prague to Vienna in September from 114€

Return flights