A Nairobi-to-Mombasa one-way car hire is one of Kenya’s most practical self-drive formats for visitors who arrive by air at Nairobi (Jomo Kenyatta International Airport) and depart by air from Mombasa (Moi International Airport) — or vice versa. The one-way hire eliminates the need to drive the return leg (480km each way) and allows the full circuit to be used for new destinations rather than retracing. Not all Kenya hire companies offer one-way hire, and those that do charge a drop fee to cover the vehicle repositioning cost. This guide covers which companies allow one-way hire, the typical drop fee range, the A109 route between the two cities, and how to combine a Tsavo stop on the one-way drive.
One-Way Hire Drop Fees
Kenya hire companies that allow Nairobi-Mombasa one-way hire typically charge a drop fee of USD 100 to 250 per vehicle. The fee covers the cost of a driver repositioning the vehicle from Mombasa back to Nairobi after drop-off. Larger companies with Mombasa branch offices (Avis, Budget, Europcar) sometimes waive or reduce the drop fee when demand is balanced between the two locations. Smaller specialist Nairobi operators typically charge the full repositioning fee. Confirm the one-way fee at booking — some companies advertise the daily hire rate without mentioning the one-way surcharge, which then appears on the invoice at pickup.
The A109 Nairobi to Mombasa Drive
The A109 highway between Nairobi and Mombasa is 480km and takes 6 to 7 hours of continuous driving. The road is mostly dual-lane tarmac in good condition, though some sections through Kibwezi and around Voi have single-lane sections with heavy truck traffic. Key points on the drive:
- Machakos junction (50km from Nairobi): Good fuel stop, avoid high-traffic Nairobi petrol stations if departing early
- Mtito Andei (240km from Nairobi): The Tsavo West gate turn-off, midway fuel stop (Kenya Total station at the main junction)
- Voi (320km from Nairobi): The Tsavo East gate turn-off, last major town before the coast descent
- Mariakani (430km from Nairobi): The road descends to the coastal plain, temperature and humidity increase noticeably
- Mombasa (480km): The Makupa Causeway into Mombasa island — heavy traffic at peak times (morning and evening rush)
Adding a Tsavo Stop on the One-Way Drive
The most natural addition to a Nairobi-Mombasa one-way drive is an overnight at Tsavo East or Tsavo West. The Voi gate (Tsavo East) is 320km from Nairobi — a 4-hour drive, leaving sufficient time to enter the park by midday, complete an afternoon game drive, overnight at the KWS campsite or a mid-range lodge, do a morning game drive, and exit for Mombasa by 10am (arriving Mombasa by noon). This structure gives a 2-day itinerary out of the one-way transit drive and adds significant wildlife value to what would otherwise be a transit-only day.
One-Way Hire from Mombasa to Nairobi
The reverse direction (Mombasa pickup, Nairobi drop) is offered by the same companies but may carry the same or a higher repositioning fee depending on fleet demand. Mombasa’s hire vehicle market is smaller than Nairobi — fewer companies, fewer vehicle types, and potentially less availability for specialist safari vehicles (Land Cruiser Prado, Land Cruiser 76). If you need a specific safari-capable 4×4, booking the Mombasa pickup from a Nairobi-headquartered company that allows Mombasa pickup is safer than relying on a Mombasa-only operator for vehicle selection.
