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

Return flights

25 Sep - 02 Oct	RwandAir	direct
22 Sep - 24 Sep	RwandAir	direct
24 Sep - 25 Sep	Kenya Airways
24 Sep - 25 Sep	RwandAir	direct
26 Sep - 03 Oct	RwandAir
24 Sep - 28 Sep	Kenya Airways
25 Sep - 28 Sep	RwandAir
24 Sep - 26 Sep	Kenya Airways
24 Sep - 27 Sep	Kenya Airways

Also check the deals for one-way flights from Kigali 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 Kigali to Bujumbura in September from 449€

Return flights