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

Return flights

25 Aug - 09 Sep	KLM
17 Aug - 24 Aug	Ethiopian Airlines
16 Aug - 25 Sep	KLM
16 Aug - 21 Sep	KLM
26 Aug - 02 Sep	KLM
30 Aug - 14 Sep	KLM
16 Aug - 13 Sep	KLM
20 Aug - 28 Aug	Qatar Airways
16 Aug - 24 Aug	KLM
16 Aug - 25 Aug	KLM
19 Aug - 26 Aug	KLM
16 Aug - 23 Aug	KLM
22 Aug - 30 Aug	KLM

Also check the deals for one-way flights from Lisbon to Cape Town 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 Cape Town in August from 782€

Return flights