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

Return flights

30 Sep - 09 Oct	Pegasus Airlines
11 Sep - 19 Sep	Pegasus Airlines
07 Sep - 19 Sep	Ryanair
11 Sep - 26 Sep	Pegasus Airlines
11 Sep - 28 Sep	Pegasus Airlines
12 Sep - 28 Sep	Pegasus Airlines
21 Sep - 05 Oct	Ryanair
16 Sep - 25 Sep	Ryanair
05 Sep - 21 Sep	Pegasus Airlines
07 Sep - 16 Sep	Ryanair
07 Sep - 20 Sep	Ryanair
07 Sep - 11 Sep	Ryanair
28 Sep - 05 Oct	Ryanair
28 Sep - 12 Oct	Ryanair
21 Sep - 21 Oct	Ryanair
22 Sep - 06 Oct	Ryanair
24 Sep - 01 Oct	AJet
05 Sep - 03 Oct	Pegasus Airlines
28 Sep - 23 Oct	Ryanair
05 Sep - 05 Oct	Pegasus Airlines

Also check the deals for one-way flights from London to Nairobi 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 Nairobi in September from 498€

Return flights