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Lake Forest to Diamond Bar buses

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Trip Overview

The average bus between Lake Forest and Diamond Bar takes 2h 39m and the fastest bus takes 2h 14m. There is a bus service every few hours from Lake Forest 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 39m
Duration
39 mi
Distance
$10
Average price
Hourly
Frequency

Line 83 bus, line 59 bus, line 286 bus

best
  1. Take the bus from Laguna Hills Trans Ctr Dock 5 to Santa Ana-Santiagobus bus 83
  2. Take the bus from The Depot At Santa Ana Dock 3 to Ring-Brea Mallbus bus 59
  3. Take the bus from Brea Mall to Diamond Bar Blvd and Sunset Crossing Rdbus bus 286
3h 4m
$5–10

Lake Forest to Diamond Bar bus times

Buses run hourly between Lake Forest and Diamond Bar. The earliest departure is at 4:30 AM at night, and the last departure from Lake Forest is at 9:00 PM which arrives into Diamond Bar at 8:04 AM. All services require a transfer at Santa Ana-Santiago and take an average of 2h 39m. The schedules shown below are for the next available departures.

Departing Saturday, October 10, 2026

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    Arrives next day

    OCTAOCTAFoothill Transit11h 4m • 2 changes

Departing Monday, October 12, 2026

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes
  • Show more

Departing Tuesday, October 13, 2026

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes
  • Show more

Departing Wednesday, October 14, 2026

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes

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    OCTAOCTAFoothill Transit2h 14m • 2 changes
  • Show more

Frequently asked questions

Want to know about travelling from Lake Forest 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 Lake Forest to Diamond Bar.ExpandLaunch map view
  • Distance: 38.7 mi
  • Duration: 2h 39m

What companies run services between Lake Forest, Orange County, CA, USA and Diamond Bar, CA, USA?

You can take a bus from Laguna Hills Trans Ctr Dock 5 to Diamond Bar Blvd and Sunset Crossing Rd via Santa Ana-Santiago, The Depot At Santa Ana Dock 3, Ring-Brea Mall, and Brea Mall in around 3h 4m.

Operators