The average bus between Fontana and Diamond Bar takes 2h 10m and the fastest bus takes 1h 43m. The bus service runs several times per day from Fontana 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 5 times a day between Fontana and Diamond Bar. The earliest departure is at 4:41 AM at night, and the last departure from Fontana is at 8:36 PM which arrives into Diamond Bar at 10:55 PM. All services require a transfer, and take on average 2h 10m. The schedules shown below are for the next available departures.

2h 14m • 1 change
2h 12m • 1 change
1h 43m • 1 change
2h • 1 changeWant to know about travelling from Fontana 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 Fontana to Diamond Bar. However, there are services departing from Sierra Avenue @ Merrill station and arriving at Diamond Bar Blvd and Sunset Crossing Rd station via Pomona Transit Center station. The journey, including transfers, takes approximately 2h 10m.
Fontana to Diamond Bar bus services, operated by Omnitrans, depart from Sierra Avenue @ Merrill station.
Fontana to Diamond Bar bus services, operated by Foothill Transit, arrive at Diamond Bar Blvd and Sunset Crossing Rd station.
The distance between Fontana and Diamond Bar is 35.3 km. The road distance is 39 km.
You can take a bus from Sierra Avenue @ Merrill to Diamond Bar Blvd and Sunset Crossing Rd via Pomona Transit Center in around 2h 21m.