The average bus between Diamond Bar and Oceanside takes 4h 59m and the fastest bus takes 2h 31m. The bus service runs several times per day from Diamond Bar to Oceanside. 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 3 times a day between Diamond Bar and Oceanside. The earliest departure is at 6:34 AM in the morning, and the last departure from Diamond Bar is at 10:33 PM which arrives into Oceanside at 8:40 AM. All services require a transfer at Brea Mall and take an average of 4h 59m. The schedules shown below are for the next available departures.


3h 55m • 2 changes


3h 20m • 2 changes


2h 31m • 2 changes
Arrives next day


10h 6m • 2 changes


3h 55m • 2 changes


3h 20m • 2 changes


2h 31m • 2 changes
Arrives next day


10h 6m • 2 changes


3h 55m • 2 changes


3h 20m • 2 changes


2h 31m • 2 changes
Arrives next day


10h 6m • 2 changes
Want to know about travelling from Diamond Bar to Oceanside? 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 Diamond Bar to Oceanside. However, there are services departing from Diamond Bar station and arriving at Oceanside station via The Depot At Santa Ana Dock 3. The journey, including transfers, takes approximately 4h 59m.
Diamond Bar to Oceanside bus services, operated by Foothill Transit, depart from Ring-Brea Mall station.
Diamond Bar to Oceanside bus services, operated by Foothill Transit, arrive at Oceanside Transportation Center station.
The distance between Diamond Bar and Oceanside is 100.8 km. The road distance is 124 km.
You can take a bus from Diamond Bar Blvd and Sunset Crossing Rd to Oceanside Transportation Center via Brea Mall, Ring-Brea Mall, and Santa Ana Bus Stop in around 3h 55m.