There are 5 ways to get from San Diego to Ontario by train (Amtrak), bus (Greyhound), car, train, bus, or bus (Flixbus)
Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.
Train (Amtrak)
best- Take the train from San Diego to Los Angelestrain Pacific Surfliner
- Take the train from Los Angeles to Ontario Amtraktrain Texas Eagle / ...
4h 50m$53–109Drive 112.7 mi
cheapest- Drive from San Diego to Ontariocar 112.7 mi
1h 55m$21–30Bus
- Take the bus from San Diego to Los Angeles Union Stationbus Tijuana
- Take the bus from Union Station Patsaouras Bus Plaza E to Pomona Transit Centerbus 707
4h 55m$27–46Train, line 59 bus
- Take the train from San Diego to Santa Anatrain Pacific Surfliner
- Take the bus from The Depot At Santa Ana Dock 3 to Ring-Brea Mallbus 59
5h 38m$35–71Bus, line 61 bus
- Take the bus from San Diego to San Bernardino Downtown Transit Centerbus FlixBus 2015 / ...
- Take the bus from Fontana Metrolink Transit Center to Holt @ Lemonbus 61
6h 17m$22–47
San Diego to Ontario by train (Amtrak)
Questions & Answers
The cheapest way to get from San Diego to Ontario is to drive which costs $20 - $30 and takes 1h 55m.
The fastest way to get from San Diego to Ontario is to drive which takes 1h 55m and costs $20 - $30.
No, there is no direct bus from San Diego to Ontario. However, there are services departing from San Diego and arriving at Holt @ Palm via Union Station Patsaouras Bus Plaza E and Pomona Transit Center. The journey, including transfers, takes approximately 4h 55m.
No, there is no direct train from San Diego to Ontario. However, there are services departing from San Diego and arriving at Ontario Amtrak via Los Angeles. The journey, including transfers, takes approximately 4h 50m.
The distance between San Diego and Ontario is 165 miles. The road distance is 113.4 miles.
The best way to get from San Diego to Ontario without a car is to train which takes 4h 50m and costs $50 - $110.
It takes approximately 4h 50m to get from San Diego to Ontario, including transfers.
San Diego to Ontario bus services, operated by Greyhound Mexico, depart from San Diego station.
San Diego to Ontario train services, operated by Amtrak, depart from San Diego station.
The best way to get from San Diego to Ontario is to train which takes 4h 50m and costs $50 - $110. Alternatively, you can bus, which costs $26 - $50 and takes 4h 55m.
What companies run services between San Diego, CA, USA and Ontario, CA, USA?
You can take a train from San Diego to Ontario Amtrak via Los Angeles in around 4h 50m. Alternatively, you can take a bus from San Diego to Holt @ Palm via Los Angeles Union Station, Union Station Patsaouras Bus Plaza E, and Pomona Transit Center in around 4h 55m.
Rome2Rio's guide to Amtrak
Contact DetailsContact Details
- Phone
- +1 800-872-7245
- Website
- amtrak.com
Train from San Diego to Los Angeles
- Ave. Duration
- 2h 56m
- Frequency
- Hourly
- Estimated price
- $40–85
- Website
- https://www.amtrak.com/home.html
Train from Los Angeles to Ontario Amtrak
- Ave. Duration
- 54 min
- Frequency
- 6 times a week
- Estimated price
- $12–25
- Website
- https://www.amtrak.com/home.html
Train from San Diego to Santa Ana
- Ave. Duration
- 2h 1m
- Frequency
- Hourly
- Estimated price
- $29–65
- Website
- https://www.amtrak.com/home.html
- Phone
- +1-800-231-2222
- [email protected]
- Website
- greyhound.com.mx
Bus from San Diego to Los Angeles Union Station
- Ave. Duration
- 2h 55m
- Frequency
- 3 times a day
- Estimated price
- $23–40
- Schedules at
- greyhound.com.mx
- Phone
- +1 800-743-3463
- [email protected]
- Website
- foothilltransit.org
Bus from Union Station Patsaouras Bus Plaza E to Pomona Transit Center
- Ave. Duration
- 1h 7m
- Frequency
- Every 30 minutes
- Estimated price
- $1–6
- Website
- https://www.foothilltransit.org
- Phone
- +1 714-560-6282
- Website
- octa.net
Bus from The Depot At Santa Ana Dock 3 to Ring-Brea Mall
- Ave. Duration
- 1h 4m
- Frequency
- Hourly
- Estimated price
- $2
- Schedules at
- octa.net
- Phone
- +1 (855) 626-8585
- Website
- https://www.flixbus.com
Bus from San Diego to San Bernardino Downtown Transit Center
- Ave. Duration
- 2h 30m
- Frequency
- Twice daily
- Estimated price
- $16–28
- Schedules at
- flixbus.com
- Phone
- +1 (909) 379-7100
- Website
- omnitrans.org
Bus from Fontana Metrolink Transit Center to Holt @ Lemon
- Ave. Duration
- 1h 10m
- Frequency
- Every 30 minutes
- Estimated price
- $2
- Website
- https://omnitrans.org/
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
Why you should take the train in the US
Read the travel guide
More Questions & Answers
San Diego to Ontario bus services, operated by Greyhound Mexico, arrive at Los Angeles Union Station.
San Diego to Ontario train services, operated by Amtrak, arrive at Los Angeles station.
Yes, the driving distance between San Diego to Ontario is 113 miles. It takes approximately 1h 55m to drive from San Diego to Ontario.
Book your San Diego to Ontario train tickets online with Omio.
Book your San Diego to Ontario bus tickets online with Omio.
There are 241+ hotels available in Ontario.


















