There are 4 ways to get from Denver to Ontario by plane, bus (Greyhound), bus, train, or car
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
4h 4m$120–610Bus (Greyhound)
cheapest- Take the bus from Denver Union Station to Las Vegas BusTerminalbus Greyhound US1200
- Take the bus from Las Vegas BusTerminal to Montclair Transcenterbus Greyhound US0900
22h 58m$110–210Bus, 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 43m$157–380Drive 981.4 mi
- Drive from Denver to Ontariocar 981.4 mi
15h 10m$180–259
Denver to Ontario by bus (Greyhound)
Questions & Answers
The cheapest way to get from Denver to Ontario is to bus which costs $110 - $210 and takes 22h 58m.
The fastest way to get from Denver to Ontario is to fly which takes 4h 4m and costs $120 - $650.
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 BusTerminal and Montclair Transit Center. The journey, including transfers, takes approximately 22h 58m.
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 22h 58m and costs $110 - $210.
It takes approximately 4h 4m 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 4h 4m and costs $120 - $650. Alternatively, you can bus, which costs $110 - $210 and takes 22h 58m.
Denver to Ontario bus services, operated by Greyhound USA, arrive at Las Vegas BusTerminal station.
Ontario is 1h behind Denver. It is currently 1:51 PM in Denver and 12:51 PM 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 2 hours. Alternatively, you can take a bus from Denver Union Station to Mountain @ D Street via Las Vegas BusTerminal, Montclair Transcenter, and Montclair Transit Center in around 22h 58m.
- Website
- southwest.com
Flights from Denver to Ontario International Airport
- Ave. Duration
- 2h 25m
- When
- Every day
- Estimated price
- $110–600
Flights from Denver to Ontario International Airport via Las Vegas
- Ave. Duration
- 4h 4m
- When
- Monday, Thursday, and Friday
- Estimated price
- $110–600
Flights from Denver to Ontario International Airport via Phoenix
- Ave. Duration
- 4h 15m
- When
- Monday to Saturday
- Estimated price
- $110–600
- Website
- united.com
Flights from Denver to Ontario International Airport
- Ave. Duration
- 2h 24m
- When
- Every day
- Estimated price
- $110–600
- Website
- flyfrontier.com
Flights from Denver to Ontario International Airport
- Ave. Duration
- 2h 27m
- When
- Every day
- Estimated price
- $110–600
- Website
- aa.com
Flights from Denver to Ontario International Airport via Phoenix
- Ave. Duration
- 4h 17m
- When
- Thursday, Friday, and Sunday
- Estimated price
- $110–600
Rome2Rio's guide to Amtrak
Contact Details
- Phone
- +1 800-872-7245
- Website
- amtrak.com
Train from Las Vegas Amtrak Station to Riverside
- Ave. Duration
- 19h 33m
- Frequency
- Twice daily
- Estimated price
- $85–290
- Website
- https://www.amtrak.com/home.html
- Coach Seat - Advance Purchase
- $85–240
- Coach Seat short notice purchase
- $120–290
- Business - advance purchase
- $170–700
- Business Class
- $250–650
Rome2Rio's guide to Greyhound USA
Contact Details
- Phone
- +1 214-849-8100
- ifsr@greyhound.com
- Website
- greyhound.com
Bus from Denver Union Station to Las Vegas BusTerminal
- Ave. Duration
- 15h 30m
- Frequency
- Once daily
- Estimated price
- $60–150
- Website
- https://www.greyhound.com/
Bus from Las Vegas BusTerminal to Montclair Transcenter
- Ave. Duration
- 5h 25m
- Frequency
- Once daily
- Estimated price
- $45–65
- Website
- https://www.greyhound.com/
- Phone
- +1 800-923-1799
- contactus@omexusa.net
- Website
- omnibusexpress.com
Bus from Denver to Las Vegas Transportation Center
- Ave. Duration
- 4h 45m
- Frequency
- 3 times a day
- Estimated price
- $70–90
- Schedules at
- omnibusexpress.com
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
Travelling to the US: What do I need to know?
Read the travel guide
Need to know: Greyhound
Read the travel guide
Why you should take the train in the US
Read the travel guide
More Questions & Answers
Yes, the driving distance between Denver to Ontario is 987 miles. It takes approximately 15h 10m to drive from Denver to Ontario.
There are 249+ hotels available in Ontario.









