The average bus between Fountain Valley and Diamond Bar takes 2h 34m and the fastest bus takes 2h 6m. There is a bus service every few hours from Fountain Valley to Diamond Bar. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between Fountain Valley and Diamond Bar. The earliest departure is at 4:38 AM at night, and the last departure from Fountain Valley is at 8:35 PM which arrives into Diamond Bar at 10:45 PM. All services require a transfer at Fullerton Trans Ctr Dock 4 and take an average of 2h 34m. The schedules shown below are for the next available departures.


2h 6m • 2 changes


2h 6m • 2 changes


2h 27m • 2 changes


2h 34m • 2 changes


2h 6m • 2 changes


2h 6m • 2 changes


2h 27m • 2 changes


2h 34m • 2 changes


2h 6m • 2 changes


2h 6m • 2 changes


2h 27m • 2 changes


2h 34m • 2 changes
Want to know about travelling from Fountain Valley to Diamond Bar? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Fountain Valley to Diamond Bar. However, there are services departing from Fountain Valley station and arriving at Diamond Bar station via Fullerton Trans Ctr Dock 2. The journey, including transfers, takes approximately 2h 34m.
Fountain Valley to Diamond Bar bus services, operated by OCTA, depart from Harbor-Macarthur station.
Fountain Valley to Diamond Bar bus services, operated by OCTA, arrive at Diamond Bar Blvd and Sunset Crossing Rd station.
The distance between Fountain Valley and Diamond Bar is 37.9 km. The road distance is 44 km.
You can take a bus from Harbor-Macarthur to Diamond Bar Blvd and Sunset Crossing Rd via Fullerton Trans Ctr Dock 4, Ring-Brea Mall, and Brea Mall in around 3h 22m.