Next departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
FlixBus + Greyhound Lines, Inc. | Portland Curbside Bus Stop | Montclair (Ontario) | Cheapest | |||||
 | Portland Curbside Bus Stop | Montclair / Ontario / Claremont | Fastest | |||||
 | PDX Airport | Ontario Station | No tags | |||||
Greyhound Lines, Inc. + FlixBus | Portland Curbside Bus Stop | Montclair (Ontario) | No tags | |||||
| Portland Curbside Bus Stop | Montclair / Ontario / Claremont | No tags |
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Bus Portland, OR to Ontario, CA: Trip Overview
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Portland to Ontario Bus
Busbud shows you the best bus ticket fares and bus schedules so you can easily plan and book a trip by bus from Portland to Ontario.
We make it our job to connect you with the most dependable bus companies that cover bus service from Portland to Ontario.
Whether it is cheap bus tickets or more luxurious buses going to Ontario from Portland, we help you find what you're looking for based on how much of a budget you have.
Where are the popular stops in Portland and Ontario?
Frequently asked questions for your trip Portland, OR - Ontario, CA
Find cheapest prices for buses
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Portland, OR to Ontario, CA was searched and found on Aug 25, 2025 with a price of $104To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Portland, OR to Ontario, CA, as early as possible.
You can expect to pay from $104 to $669 for a bus ticket from Portland, OR to Ontario, CA based on the last 2 days. You can expect to find the cheapest price for the trip at $104 which is on 2025-08-25.
About Bus Travel
Bus Travel Tips
If you're abroad, study some local language. Not only could it get you out of a pickle during your bus trip from Portland to Ontario but it'll also be endearing to native speakers who will surely appreciate your effort.
From miles long of beauteous natural landscapes to impressive man-crafted sights, you're bound to be in for a visual treat on your bus trip from Portland to Ontario.
Buses are energy-efficient. Carrying a passenger over 100 kms by coach only takes 0.6-0.9 liters of gas. Compare that to the 2.6 liters required by high-speed train, 6.6 liters by airplane and 7.6 liters by gas-powered car, and it's clear that the bus is a more environmentally-conscious option for your bus transportation from Portland to Ontario.
Tune out to the fine sounds of your best music playlist on your bus trip from Portland to Ontario while indulging in miles on end of beautiful scenic views.
Did you know?
The average number of passengers on a coach bus is 32 meaning that a bus could replace a minimum of at least 30 cars!
The bus driver with the longest career in the world drove more than 2,000,000 miles and is a happy World Record holder.
Did you know some bus companies in Germany offer to their passenger low-costs snacks and regional beer based on their destination? Prosit!
Top traveled bus routes
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Busbud.com makes it easy for you to find, compare and book city-to-city bus tickets, all over the world. We save you the extra trip to the bus station. With several language and currency options available, Busbud seeks to cater to international bus travelers no matter where they are in the world. Busbud prides itself on its worldwide partnerships. We make it possible for you to buy tickets with its large network of trustworthy bus partners like Greyhound, Eurolines, ALSA, OUIBUS (BlaBlaBus), National Express and many others.