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

Return flights

15 Sep - 23 Sep	IndiGo
25 Sep - 28 Sep	IndiGo
10 Sep - 25 Sep	IndiGo
10 Sep - 09 Oct	IndiGo
29 Sep - 06 Oct	IndiGo
16 Sep - 23 Sep	IndiGo
18 Sep - 27 Sep	IndiGo
17 Sep - 26 Sep	IndiGo
14 Sep - 21 Sep	IndiGo
21 Sep - 29 Sep	Thai Lion Air
04 Sep - 18 Sep	IndiGo
25 Sep - 05 Oct	Thai VietJet Air
02 Sep - 11 Sep	IndiGo
30 Sep - 11 Oct	IndiGo
24 Sep - 02 Oct	IndiGo

Also check the deals for one-way flights from Bangkok 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 Bangkok to Nairobi in September from 439€

Return flights