AirHint found the following cheapest return flights from Dublin (DUB) to Cape Town (CPT) in September 2025 (see full year).

Return flights

22 Sep - 05 Oct	SWISS
04 Sep - 17 Sep	KLM
05 Sep - 21 Sep	KLM
08 Sep - 22 Sep	KLM
15 Sep - 29 Sep	KLM
15 Sep - 18 Oct	KLM
16 Sep - 18 Oct	KLM
16 Sep - 19 Oct	KLM
17 Sep - 18 Oct	KLM
17 Sep - 17 Oct	KLM
26 Sep - 20 Oct	KLM
19 Sep - 29 Sep	KLM
14 Sep - 18 Oct	KLM
14 Sep - 19 Oct	KLM
23 Sep - 15 Oct	KLM
15 Sep - 21 Sep	KLM
04 Sep - 22 Sep	KLM
17 Sep - 21 Sep	KLM
19 Sep - 26 Sep	KLM
14 Sep - 29 Sep	KLM

Also check the deals for one-way flights from Dublin to Cape Town 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.

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Cheapest return flights from Dublin to Cape Town in September from $720

Return flights