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

One-Way flights

26 Aug	Vueling Airlines
12 Aug	Vueling Airlines
05 Aug	Vueling Airlines
04 Aug	Vueling Airlines
19 Aug	Vueling Airlines
27 Aug	Ryanair	direct
05 Aug	Ryanair	direct
11 Aug	Ryanair
09 Aug	Ryanair
28 Aug	Ryanair

Also check the deals for return 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.

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Cheapest one-way flights from Porto to Vienna in August from $95

One-Way flights