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

Return flights

23 Sep - 30 Sep	IndiGo
16 Sep - 30 Sep	IndiGo
25 Sep - 09 Oct	IndiGo
22 Sep - 27 Sep	IndiGo
15 Sep - 01 Oct	IndiGo
25 Sep - 01 Oct	IndiGo
20 Sep - 27 Sep	IndiGo
11 Sep - 17 Sep	IndiGo
21 Sep - 26 Sep	Air Arabia
08 Sep - 24 Sep	IndiGo
06 Sep - 16 Sep	IndiGo
07 Sep - 16 Sep	IndiGo
02 Sep - 09 Sep	Air Tanzania

Also check the deals for one-way flights from Nairobi to Bangkok 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 Nairobi to Bangkok in September from $575

Return flights