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

Return flights

30 Sep - 11 Oct	Thai VietJet Air
29 Sep - 15 Oct	Air India
24 Sep - 01 Oct	Thai VietJet Air
30 Sep - 16 Oct	Thai VietJet Air
28 Sep - 02 Oct	Thai VietJet Air
27 Sep - 01 Oct	Air India
25 Sep - 05 Oct	IndiGo
21 Sep - 24 Sep	Thai Lion Air
21 Sep - 28 Sep	Thai Lion Air
25 Sep - 02 Oct	Thai VietJet Air
20 Sep - 27 Sep	Air Arabia
20 Sep - 23 Sep	Nok Air
17 Sep - 23 Sep	Thai VietJet Air
19 Sep - 27 Sep	Etihad Airways
23 Sep - 27 Sep	Air Arabia
20 Sep - 23 Sep	China Eastern	direct
25 Sep - 02 Oct	Kenya Airways	direct
30 Sep - 16 Oct	Kenya Airways	direct

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 $649

Return flights