Good news if you're in the UK and looking to do some domestic flights in Kenya: Fly540, the newest airline in East Africa (since November 2006), has just announced its first UK reservations number, 0871 644 3365 (daily 8am–8pm) as part of its appointment of Flight Directors in Horley, Surrey, as its general sales agent in the UK. Previously, you could only book Fly540 online, or through their East African offices. Presumably, for travellers outside Britain, the new UK res number is also another option.
The Kenyan hub of Fly540, which aims to become Africa's first no-frills airline, is JKI Airport in Nairobi. Its Kenyan network consists of: Mombasa, Maasai Mara, Malindi, Lamu, Eldoret, Kitale, Kisumu and Lodwar.
Other airlines are available: I like Safarilink (based at Wilson Airport in Nairobi) and Mombasa Air Safaris (based at Moi, Mombasa).
Fly540 also has an active regional network – and about to expand in Tanzania.