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

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

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 O'Hare International Airport to Ontario International Airport

    best
    1. Fly from Chicago O'Hare International Airport (ORD) to Ontario International Airport (ONT)plane plane ORD - ONT
    7h 57m
    $166–713

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

    cheapest
    1. Fly from Chicago O'Hare International Airport (ORD) to Los Angeles International Airport (LAX)plane plane ORD - LAX
    2. Take the bus from Harbor Transitway / Harbor Fwy Station to El Monte Station - Upper Levelbus bus
    8h 46m
    $106–447

  3. Train via San Bernardino (Amtrak)

    1. Take the train from Chicago Union Station to San Bernardinotrain train Southwest Chief
    43h 38m
    $246–495

  4. Bus

    1. Take the bus from Chicago Bus Station to St Louis Bus Stationbus bus FlixBus N2521 / ...
    2. Take the bus from St Louis Bus Station to Montclair Transcenterbus bus Greyhound US1210
    47h 58m
    $170–404

  5. Drive 1,989.7 mi

    1. Drive from Chicago to Diamond Barcar car 1,989.7 mi
    31h 8m
    $364–525

  6. Fly Chicago Midway International Airport to Ontario International Airport

    1. Fly from Chicago Midway International Airport (MDW) to Ontario International Airport (ONT)plane plane MDW - ONT
    7h 45m
    $236–1,113

  7. 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 Harbor Transitway / Harbor Fwy Station to El Monte Station - Upper Levelbus bus
    8h 38m
    $126–567

  8. Fly Chicago Midway International Airport to Burbank Bob Hope Airport

    1. Fly from Chicago Midway International Airport (MDW) to Burbank Bob Hope Airport (BUR)plane plane MDW - BUR
    9h 38m
    $190–823

  9. Fly Chicago O'Hare International Airport to John Wayne Airport Orange County, line 43 bus, line 143 bus, 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 Harbor-Macarthur to Fullerton Trans Ctr Dock 2bus bus
    3. Take the bus from Fullerton Trans Ctr Dock 4 to Ring-Brea Mallbus bus
    4. Take the bus from Brea Mall to Diamond Bar Blvd and Sunset Crossing Rdbus bus
    11h 16m
    $150–767

  10. Train (Amtrak)

    1. Take the train from Chicago Union Station to Pomona Amtraktrain train Texas Eagle
    2d 16h
    $289–1,515

Chicago to Diamond Bar by train and bus (Amtrak)

Calendar13Weekly Services
Duration43h 38mAverage Duration
Ticket$246Cheapest Price
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Questions & Answers

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

United Airlines, Southwest Airlines, and two other airlines fly from Chicago O'Hare International Airport (ORD) to Ontario International Airport (ONT) every 2 hours. Alternatively, Amtrak operates a train from Chicago Union Station to San Bernardino twice daily. Tickets cost $230–480 and the journey takes 41h 21m.

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