The average bus between Orange and Diamond Bar takes 1h 35m and the fastest bus takes 1h 21m. There is a bus service every few hours from Orange 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 Orange and Diamond Bar. The earliest departure is at 5:14 AM in the morning, and the last departure from Orange is at 9:16 PM which arrives into Diamond Bar at 10:45 PM. All services require a transfer at Ring-Brea Mall and take an average of 1h 35m. The schedules shown below are for the next available departures.

1h 23m • 1 change

1h 23m • 1 change

1h 25m • 1 change

1h 25m • 1 change

1h 30m • 1 change

1h 30m • 1 change

1h 23m • 1 change

1h 23m • 1 change

1h 30m • 1 change

1h 30m • 1 change

1h 23m • 1 change

1h 23m • 1 change
Want to know about travelling from Orange 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 Orange to Diamond Bar. However, there are services departing from Orange station and arriving at Diamond Bar station via Ring-Brea Mall. The journey, including transfers, takes approximately 1h 35m.
Orange to Diamond Bar bus services, operated by OCTA, depart from Glassell-Palm station.
Orange to Diamond Bar bus services, operated by OCTA, arrive at Diamond Bar Blvd and Sunset Crossing Rd station.
The distance between Orange and Diamond Bar is 27.1 km. The road distance is 32 km.
You can take a bus from Glassell-Palm to Diamond Bar Blvd and Sunset Crossing Rd via Ring-Brea Mall and Brea Mall in around 1h 56m.