AirHint found the following cheapest return flights from London (LHR) to Mombasa (MBA) in September 2025 (see full year).

Return flights

09 Sep - 22 Oct	Ethiopian Airlines
08 Sep - 17 Oct	Vueling Airlines
08 Sep - 21 Sep	Vueling Airlines
14 Sep - 29 Sep	Saudia
16 Sep - 30 Sep	Saudia
25 Sep - 29 Sep	Saudia
18 Sep - 25 Sep	Saudia
15 Sep - 29 Sep	EgyptAir
21 Sep - 03 Oct	Saudia
16 Sep - 01 Oct	Saudia
11 Sep - 22 Oct	Saudia
23 Sep - 13 Oct	Saudia
18 Sep - 24 Sep	EgyptAir
18 Sep - 08 Oct	Saudia
22 Sep - 29 Sep	EgyptAir
16 Sep - 23 Sep	EgyptAir
12 Sep - 29 Sep	EgyptAir
09 Sep - 07 Oct	Eurowings
28 Sep - 14 Oct	EgyptAir
18 Sep - 07 Oct	Saudia

Also check the deals for one-way flights from London to Mombasa 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 London to Mombasa in September from 502€

Return flights