There are 5 ways to get from Denver to Ontario by plane, bus (Greyhound), bus, train, car, or bus (Greyhound, Flixbus)
Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.
Fly
best- Fly from Denver (DEN) to Ontario International Airport (ONT)plane DEN - ONT
3h 58m$95–320Bus (Greyhound)
- Take the bus from Denver Union Station to Las Vegas Bus Terminalbus Greyhound US1200
- Take the bus from Las Vegas Bus Terminal to Montclair Transcenterbus Greyhound US0901
21h 59m$183–275Bus, train
- Take the bus from Denver to Las Vegas Transportation Centerbus Denver / ...
- Take the train from Las Vegas Amtrak Station to Riversidetrain Southwest Chief
26h 44m$573–941Drive 981.4 mi
- Drive from Denver to Ontariocar 981.4 mi
15h 16m$168–243Bus via San Bernardino
- Take the bus from Denver Union Station to Las Vegas Bus Terminalbus Greyhound US1200
- Take the bus from Las Vegas Strip to San Bernardino Downtown Transit Centerbus FlixBus 2030 / ...
23h 46m$181–269
Denver to Ontario by bus (Greyhound)
Comparing Your Travel Options
The cheapest way to get from Denver to Ontario is to fly which costs $95 - $320 and takes 3h 58m.
The fastest way to get from Denver to Ontario is to fly which takes 3h 58m and costs $95 - $320.
No, there is no direct bus from Denver station to Ontario. However, there are services departing from Denver Union Station and arriving at Mountain @ D Street via Las Vegas Bus Terminal and Montclair Transit Center. The journey, including transfers, takes approximately 21h 59m.
The distance between Denver and Ontario is 845 miles. The road distance is 987.1 miles.
The best way to get from Denver to Ontario without a car is to bus which takes 21h 59m and costs $180 - $280.
It takes approximately 3h 58m to get from Denver to Ontario, including transfers.
Denver to Ontario bus services, operated by Greyhound USA, depart from Denver Union Station.
The best way to get from Denver to Ontario is to fly which takes 3h 58m and costs $95 - $320. Alternatively, you can bus, which costs $180 - $280 and takes 21h 59m.
Denver to Ontario bus services, operated by Greyhound USA, arrive at Las Vegas Bus Terminal station.
Ontario is 1h behind Denver. It is currently 10:01 AM in Denver and 9:01 AM in Ontario.
What companies run services between Denver, CO, USA and Ontario, CA, USA?
Frontier Airlines, United Airlines, and two other airlines fly from Denver (DEN) to Ontario International Airport (ONT) every 3 hours. Alternatively, you can take a bus from Denver Union Station to Mountain @ D Street via Las Vegas Bus Terminal, Montclair Transcenter, and Montclair Transit Center in around 21h 59m.
- Website
- southwest.com
Flights from Denver to Ontario International Airport
- Ave. Duration
- 2h 22m
- When
- Every day
- Estimated price
- $65–350
Flights from Denver to Ontario International Airport via Las Vegas
- Ave. Duration
- 4h 10m
- When
- Every day
- Estimated price
- $65–350
Flights from Denver to Ontario International Airport via Phoenix
- Ave. Duration
- 4h 10m
- When
- Tuesday and Wednesday
- Estimated price
- $70–370
- Website
- flyfrontier.com
Flights from Denver to Ontario International Airport
- Ave. Duration
- 2h 23m
- When
- Every day
- Estimated price
- $95–320
Flights from Denver to Ontario International Airport via Las Vegas
- Ave. Duration
- 4h 16m
- When
- Every day
- Estimated price
- $95–320
- Website
- united.com
Flights from Denver to Ontario International Airport
- Ave. Duration
- 2h 22m
- When
- Every day
- Estimated price
- $65–350
- Website
- aa.com
Flights from Denver to Ontario International Airport via Phoenix
- Ave. Duration
- 4h 10m
- When
- Thursday and Sunday
- Estimated price
- $70–370
Rome2Rio's guide to Amtrak
Contact Details
- Phone
- +1 800-872-7245
- Website
- Amtrak
Train from Las Vegas Amtrak Station to Riverside
- Ave. Duration
- 19h 33m
- Frequency
- Once daily
- Estimated price
- $500–850
- Website
- Amtrak
Rome2Rio's guide to Greyhound USA
Contact Details
- Phone
- +1 214-849-8100
- ifsr@greyhound.com
- Website
- Greyhound
Bus from Denver Union Station to Las Vegas Bus Terminal
- Ave. Duration
- 15h 25m
- Frequency
- Twice daily
- Estimated price
- $140–210
- Website
- Greyhound
Bus from Las Vegas Bus Terminal to Montclair Transcenter
- Ave. Duration
- 4h 30m
- Frequency
- Twice daily
- Estimated price
- $40–65
- Website
- Greyhound
Bus from Denver Union Station to Las Vegas Bus Terminal
- Ave. Duration
- 15h 25m
- Frequency
- Twice daily
- Estimated price
- $140–210
- Website
- Greyhound
- Phone
- +1 800-923-1799
- contactus@omexusa.net
- Website
- Omnibus Express
Bus from Denver to Las Vegas Transportation Center
- Ave. Duration
- 4h 46m
- Frequency
- 4 times a day
- Estimated price
- $70–95
- Schedules at
- Omnibus Express
- Phone
- +1 (855) 626-8585
- Website
- Flixbus USA
Bus from Las Vegas Strip to San Bernardino Downtown Transit Center
- Ave. Duration
- 4h
- Frequency
- 3 times a day
- Estimated price
- $35–55
- Schedules at
- Flixbus USA
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.
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Booking & Getting There
Yes, the driving distance between Denver to Ontario is 987 miles. It takes approximately 15h 16m to drive from Denver to Ontario.
Book your Denver to Ontario bus tickets online with Omio.
There are 252+ hotels available in Ontario.











