AirHint found the following cheapest return flights from Porto (OPO) to Vienna (VIE) in September 2026 (see full year).

Return flights

23 Sep - 27 Sep	Ryanair	direct
23 Sep - 05 Oct	Ryanair	direct
23 Sep - 09 Oct	Ryanair	direct
20 Sep - 27 Sep	Ryanair	direct
28 Sep - 05 Oct	Ryanair	direct
20 Sep - 05 Oct	Ryanair	direct
28 Sep - 09 Oct	Ryanair	direct
20 Sep - 09 Oct	Ryanair	direct
20 Sep - 21 Sep	Ryanair	direct
06 Sep - 27 Sep	Ryanair	direct
17 Sep - 20 Sep	Ryanair
03 Sep - 07 Sep	Air Serbia
06 Sep - 19 Sep	Ryanair	direct
06 Sep - 20 Sep	Ryanair	direct
06 Sep - 21 Sep	Ryanair	direct
06 Sep - 07 Sep	Ryanair	direct

Also check the deals for one-way flights from Porto 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.

Book a cheap hotel in Vienna

Cheap car rent in Vienna

Cheapest return flights from Porto to Vienna in September from $190

Return flights