The average bus between Orange County Fairgrounds and Diamond Bar takes 3h 10m and the fastest bus takes 2h 15m. There is a bus service every few hours from Orange County Fairgrounds 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 County Fairgrounds and Diamond Bar. The earliest departure is at 5:22 AM in the morning, and the last departure from Orange County Fairgrounds is at 10:34 PM which arrives into Diamond Bar at 6:44 AM. All services require a transfer at Fairview-Fair and take an average of 3h 10m. The schedules shown below are for the next available departures.


2h 22m • 2 changes


2h 52m • 2 changes


2h 21m • 2 changes


2h 53m • 2 changes


2h 22m • 2 changes


2h 52m • 2 changes


2h 21m • 2 changes


2h 53m • 2 changes


2h 22m • 2 changes


2h 52m • 2 changes


2h 21m • 2 changes


2h 53m • 2 changes
Want to know about travelling from Orange County Fairgrounds 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 County Fairgrounds to Diamond Bar. However, there are services departing from Orange County Fairgrounds station and arriving at Diamond Bar station via Ring-Brea Mall. The journey, including transfers, takes approximately 3h 10m.
Orange County Fairgrounds to Diamond Bar bus services, operated by OCTA, depart from Bristol-Sunflower station.
Orange County Fairgrounds to Diamond Bar bus services, operated by OCTA, arrive at Diamond Bar Blvd and Sunset Crossing Rd station.
The distance between Orange County Fairgrounds and Diamond Bar is 41.2 km. The road distance is 49 km.
You can take a vehicle from Orange County Fairgrounds to Diamond Bar Blvd and Sunset Crossing Rd via Fairview-Fair, Bristol-Sunflower, Ring-Brea Mall, and Brea Mall in around 3h 20m.