AirHint found the following cheapest return flights from Sydney (SYD) to Nairobi (NBO) in September 2025 (see full year).

Return flights

11 Sep - 25 Sep	IndiGo
09 Sep - 20 Sep	IndiGo
26 Sep - 12 Oct	AirAsia X
03 Sep - 11 Sep	IndiGo
04 Sep - 07 Sep	IndiGo
28 Sep - 05 Oct	AirAsia X
24 Sep - 15 Oct	IndiGo
21 Sep - 21 Oct	IndiGo
14 Sep - 29 Sep	IndiGo
22 Sep - 22 Oct	IndiGo
23 Sep - 22 Oct	IndiGo
20 Sep - 22 Oct	IndiGo
27 Sep - 12 Oct	IndiGo
24 Sep - 22 Oct	Garuda Indonesia
25 Sep - 22 Oct	IndiGo

Also check the deals for one-way flights from Sydney to Nairobi 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 Sydney to Nairobi in September from 999€

Return flights