The average bus between Diamond Bar and Seal Beach takes 4h 10m and the fastest bus takes 2h 12m. The bus service runs several times per day from Diamond Bar to Seal Beach. 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 every 3 hours between Diamond Bar and Seal Beach. The earliest departure is at 7:22 AM in the morning, and the last departure from Diamond Bar is at 9:29 PM which arrives into Seal Beach at 6:08 AM. All services require a transfer at El Monte Station Upper Level and take an average of 4h 10m. The schedules shown below are for the next available departures.


2h 43m • 2 changes


2h 36m • 2 changes


3h 2m • 2 changes


2h 27m • 2 changes


2h 40m • 2 changes


2h 14m • 2 changes


2h 31m • 2 changes


2h 45m • 2 changes


2h 40m • 2 changes


2h 14m • 2 changes


2h 31m • 2 changes


2h 45m • 2 changes


2h 40m • 2 changes


2h 14m • 2 changes


2h 31m • 2 changes


2h 45m • 2 changes


2h 40m • 2 changes


2h 14m • 2 changes


2h 31m • 2 changes


2h 45m • 2 changes
Want to know about travelling from Diamond Bar to Seal Beach? 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 Seal Beach. However, there are services departing from Diamond Bar station and arriving at Seal Beach station via El Monte Station Upper Level station. The journey, including transfers, takes approximately 4h 10m.
Diamond Bar to Seal Beach bus services, operated by Foothill Transit, depart from Cal Poly Pomona Admin station.
Diamond Bar to Seal Beach bus services, operated by Foothill Transit, arrive at 7th / Channel station.
The distance between Diamond Bar and Seal Beach is 41.9 km. The road distance is 73 km.
You can take a bus from Cal Poly Pomona Admin to Pacific Coast-10Th via El Monte Station Upper Level, El Monte Station - Lower Level, 7th / Channel, and 7Th-Channel in around 3h 17m.