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

Return flights

13 Aug - 30 Sep	KLM
26 Aug - 02 Sep	KLM
25 Aug - 28 Aug	KLM
29 Aug - 07 Sep	KLM
21 Aug - 28 Aug	KLM
13 Aug - 21 Aug	KLM
21 Aug - 27 Aug	KLM
28 Aug - 03 Sep	Ryanair
05 Aug - 12 Aug	KLM
20 Aug - 26 Aug	Ryanair
20 Aug - 29 Aug	Ryanair
20 Aug - 21 Aug	Ryanair	direct
28 Aug - 09 Sep	Ryanair
10 Aug - 16 Aug	KLM
28 Aug - 17 Sep	Ryanair	direct
24 Aug - 28 Aug	KLM
20 Aug - 03 Sep	Ryanair
18 Aug - 01 Sep	Wizz Air Malta
20 Aug - 03 Sep	Ryanair	direct
30 Aug - 06 Sep	Wizz Air Malta

Also check the deals for one-way flights from Lisbon 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 return flights from Lisbon to Vienna in August from 161€

Return flights