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

Return flights

04 Dec - 14 Dec	RwandAir
06 Dec - 14 Dec	RwandAir
01 Dec - 22 Dec	Air France
01 Dec - 14 Dec	Brussels Airlines
05 Dec - 21 Dec	Brussels Airlines
05 Dec - 10 Dec	EgyptAir
03 Dec - 14 Jan	EgyptAir
08 Dec - 17 Jan	EgyptAir
08 Dec - 17 Dec	Brussels Airlines
07 Dec - 12 Jan	EgyptAir
01 Dec - 18 Dec	Kenya Airways
01 Dec - 13 Dec	Kenya Airways
01 Dec - 14 Jan	Kenya Airways
31 Dec - 31 Jan	Kenya Airways
09 Dec - 12 Jan	EgyptAir
02 Dec - 11 Dec	Kenya Airways
03 Dec - 28 Jan	Kenya Airways
08 Dec - 11 Jan	EgyptAir
25 Dec - 20 Jan	Qatar Airways
25 Dec - 19 Jan	RwandAir

Also check the deals for one-way flights from London to Mombasa in December.

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 December from 509€

Return flights