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

Return flights

21 Sep - 01 Oct	Air Tanzania
22 Sep - 29 Sep	Uganda Airlines
30 Sep - 05 Oct	Air Tanzania
24 Sep - 28 Sep	RwandAir
30 Sep - 05 Oct	Kenya Airways	direct
22 Sep - 29 Sep	Kenya Airways	direct
23 Sep - 30 Sep	Kenya Airways	direct
21 Sep - 01 Oct	Kenya Airways	direct
24 Sep - 28 Sep	Kenya Airways	direct
21 Sep - 28 Sep	Kenya Airways	direct
19 Sep - 26 Sep	Kenya Airways	direct
22 Sep - 26 Sep	Kenya Airways	direct
21 Sep - 26 Sep	Kenya Airways	direct

Also check the deals for one-way flights from Nairobi to Bujumbura 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 Bujumbura in September from 399€

Return flights