Montri Transportation are the service provider for door-to-door routes to and from Harrow Bangkok. They are a well known and reputable company that provide transportation for many international schools in Bangkok.

The Wat Phoman (Rama III) shuttle service buses are operated by Harrow Bangkok's own buses.

The service is a safe, reliable and cost-effective way for children to travel to school. All children have an ID card that allows their departure and arrival times to be tracked. A text message can be sent to a parent/guardian's phone on request.