The average bus between Santa Ana and Diamond Bar takes 2h 39m and the fastest bus takes 1h 42m. The bus service runs several times per day from Santa Ana 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 twice daily between Santa Ana and Diamond Bar. The earliest departure is at 8:58 AM in the morning, and the last departure from Santa Ana is at 9:34 PM which arrives into Diamond Bar at 8:04 AM. All services require a transfer at Ring-Brea Mall and take an average of 2h 39m. The schedules shown below are for the next available departures.

2h 6m • 1 change

2h 12m • 1 change

2h 18m • 1 change

2h 24m • 1 change
Want to know about travelling from Santa Ana 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 Santa Ana to Diamond Bar. However, there are services departing from Santa Ana station and arriving at Diamond Bar station via Ring-Brea Mall. The journey, including transfers, takes approximately 2h 39m.
Santa Ana to Diamond Bar bus services, operated by OCTA, depart from Santa Ana-Santiago station.
Santa Ana to Diamond Bar bus services, operated by OCTA, arrive at Diamond Bar Blvd and Sunset Crossing Rd station.
The distance between Santa Ana and Diamond Bar is 31.9 km. The road distance is 38 km.
You can take a bus from Santa Ana-Santiago to Diamond Bar Blvd and Sunset Crossing Rd via Ring-Brea Mall and Brea Mall in around 2h 16m.