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Irvine to Diamond Bar buses

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Trip Overview

The average bus between Irvine and Diamond Bar takes 2h 40m and the fastest bus takes 2h 13m. The bus service runs several times per day from Irvine 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.

2h 40m
Duration
33 mi
Distance
$8
Average price
4 times a day
Frequency

Line 59 bus, line 286 bus

best
  1. Take the bus from University-Ent 3773 Mariposa Villa to Ring-Brea Mallbus bus 59
  2. Take the bus from Brea Mall to Diamond Bar Blvd and Sunset Crossing Rdbus bus 286
3h 1m
$3–8

Irvine to Diamond Bar bus times

Buses run 4 times a day between Irvine and Diamond Bar. The earliest departure is at 5:42 AM in the morning, and the last departure from Irvine is at 8:22 PM which arrives into Diamond Bar at 10:45 PM. All services require a transfer at Ring-Brea Mall and take an average of 2h 40m. The schedules shown below are for the next available departures.

Departing Friday, October 30, 2026

  •  → 

    OCTAFoothill Transit2h 48m • 1 change

  •  → 

    OCTAFoothill Transit2h 32m • 1 change

  •  → 

    OCTAFoothill Transit2h 26m • 1 change

  •  → 

    OCTAFoothill Transit2h 23m • 1 change

Departing Saturday, October 31, 2026

  •  → 

    OCTAFoothill Transit2h 22m • 1 change

  •  → 

    OCTAFoothill Transit2h 31m • 1 change

  •  → 

    OCTAFoothill Transit2h 37m • 1 change

  •  → 

    OCTAFoothill Transit2h 45m • 1 change
  • Show more

Frequently asked questions

Want to know about travelling from Irvine 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.

Map of how to get from Irvine to Diamond Bar.ExpandLaunch map view
  • Distance: 33.3 mi
  • Duration: 2h 40m

What companies run services between Irvine, CA, USA and Diamond Bar, CA, USA?

You can take a bus from University-Ent 3773 Mariposa Villa to Diamond Bar Blvd and Sunset Crossing Rd via Ring-Brea Mall and Brea Mall in around 3h 1m.

Operators