Rome2Rio

How to get fromChicago to Diamond Barby plane, train (Amtrak), bus (Flixbus, Greyhound), car, bus, or tram

Find Transport to Diamond Bar

See all options
QR code to download the Rome2Rio app

Download the Rome2Rio travel app

Scan QR code with your phone to download the app

Download on the App StoreGet it on Google Play

There are 10 ways to get from Chicago to Diamond Bar by plane, train (Amtrak), bus (Flixbus, Greyhound), car, bus, or tram

Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.

  1. Fly Chicago Midway International Airport to Ontario International Airport

    best
    1. Fly from Chicago Midway International Airport (MDW) to Ontario International Airport (ONT)plane plane MDW - ONT
    7h 38m
    $166–713

  2. Fly Chicago O'Hare International Airport to Ontario International Airport

    cheapest
    1. Fly from Chicago O'Hare International Airport (ORD) to Ontario International Airport (ONT)plane plane ORD - ONT
    7h 57m
    $100–433

  3. Train via Riverside

    1. Take the train from Chicago Union Station to Riversidetrain train Southwest Chief
    2. Take the train from Riverside - Downtown to Pomona - Downtowntrain train RIV Line
    43h 48m
    $1,201–1,847

  4. Bus

    1. Take the bus from Chicago Bus Station to St Louis Bus Stationbus bus FlixBus 2510 / ...
    2. Take the bus from St Louis Bus Station to Montclair Transcenterbus bus Greyhound US1210
    47h 43m
    $383–587

  5. Drive  1,989.7 mi

    1. Drive from Chicago to Diamond Barcar car 1,989.7 mi
    31h 11m
    $329–475

  6. Fly Chicago Midway International Airport to Los Angeles International Airport, bus

    1. Fly from Chicago Midway International Airport (MDW) to Los Angeles International Airport (LAX)plane plane MDW - LAX
    2. Take the bus from Union Station Patsaouras Bus Plaza E to Cal Poly Pomona Adminbus bus
    8h 4m
    $150–504

  7. Fly Chicago O'Hare International Airport to Los Angeles International Airport, bus

    1. Fly from Chicago O'Hare International Airport (ORD) to Los Angeles International Airport (LAX)plane plane ORD - LAX
    2. Take the bus from Union Station Patsaouras Bus Plaza E to Cal Poly Pomona Adminbus bus
    8h 19m
    $106–284

  8. Fly Chicago O'Hare International Airport to John Wayne Airport Orange County, line 286 bus

    1. Fly from Chicago O'Hare International Airport (ORD) to John Wayne Airport Orange County (SNA)plane plane ORD - SNA
    2. Take the bus from Brea Mall to Diamond Bar Blvd and Sunset Crossing Rdbus bus
    9h 50m
    $116–513

  9. Fly Chicago Midway International Airport to Long Beach Airport, tram

    1. Fly from Chicago Midway International Airport (MDW) to Long Beach Airport (LGB)plane plane MDW - LGB
    2. Take the tram from Del Amo Station to San Dimas Stationtram tram
    10h 18m
    $180–817

  10. Train (Amtrak)

    1. Take the train from Chicago Union Station to Pomona Amtraktrain train Texas Eagle
    2d 16h
    $1,477–2,270

Chicago to Diamond Bar by train and bus

Calendar7Weekly Services
Duration43h 48mAverage Duration
Ticket$1,201Cheapest Price
See schedules

Comparing Your Travel Options

Map of how to get from Chicago to Diamond Bar.ExpandLaunch map view
  • Distance: 1,731.9 mi
  • Duration: 7h 38m

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

Southwest Airlines flies from Chicago Midway International Airport (MDW) to Ontario International Airport (ONT) every 4 hours. Alternatively, you can take a train from Chicago Union Station to Mission Blvd and Mission West Business P via Riverside - Downtown, Pomona - Downtown, and Pomona Transit Center in around 43h 48m.

Airlines
Train operators
Bus operators

Want to know more about travelling around United States

Rome2Rio's Travel Guide series provide vital information for the global traveller. Filled with useful and timely travel information, the guides answer all the hard questions - such as 'How do I buy a ticket?', 'Should I book online before I travel? ', 'How much should I expect to pay?', 'Do the trains and buses have Wifi?' - to help you get the most out of your next trip.

Related travel guides

Need to know: Greyhound

Read the travel guideNeed to know: Greyhound

Booking & Getting There