AirHint found the following cheapest return flights from Porto (OPO) to Vienna (VIE) in August 2025 (see full year).

Return flights

27 Aug - 03 Sep	Ryanair
28 Aug - 04 Sep	Ryanair
26 Aug - 04 Sep	Ryanair
27 Aug - 16 Sep	Ryanair	direct
27 Aug - 17 Sep	Ryanair	direct
28 Aug - 01 Sep	Ryanair
26 Aug - 30 Aug	Ryanair
28 Aug - 02 Sep	Ryanair
27 Aug - 09 Sep	Ryanair	direct
27 Aug - 12 Sep	Ryanair	direct
27 Aug - 04 Sep	Ryanair	direct
05 Aug - 09 Aug	Ryanair
07 Aug - 12 Aug	Ryanair
27 Aug - 29 Aug	Ryanair	direct
26 Aug - 31 Aug	Ryanair
19 Aug - 25 Aug	Vueling Airlines
13 Aug - 21 Aug	Ryanair
27 Aug - 28 Aug	Ryanair	direct
05 Aug - 21 Aug	Ryanair	direct
04 Aug - 09 Aug	Wizz Air Malta

Also check the deals for one-way flights from Porto to Vienna in August.

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 August from 171€

Return flights