Cheap Flights from Portland (PDX) to Ontario (ONO)

Popular airlines from Portland International Airport (PDX) to Ontario, OR (ONO-Ontario Municipal)

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal) cost?
Snag a cheap one-way flight or cheap return flight from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal)?
Flying in can help you save, as it's the cheapest month for flights between PDX and ONO. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest PDX to ONO flight.
How many flights per day from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal)?
Nonstop flights from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDX to ONO?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on various factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal)?
To avoid possible delays on the Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal) route, aim to travel before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Ontario from Portland Intl. Airport (PDX)?
Boise Airport (BOI) is the only airport in Ontario with direct flights from Portland Intl. Airport (PDX). Browse the available options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal) last-minute?
Booking your plane ticket from PDX to ONO just before your getaway is typically more expensive. However, if there's some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a PDX to ONO flight and hotel package?
Opting for a PDX to ONO flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Ontario, OR (ONO-Ontario Municipal)?
Typically, you can reschedule or cancel your PDX to ONO flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want more information, head to our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Ontario Municipal
Distance
291 mi

Book with confidence

Portland to Ontario Flights

The cheapest times to fly from Portland to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Ontario are during the month of . You can find some of the cheapest flights from Portland to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Ontario

Sunday is one of the best days to book for cheap flights from Portland to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Ontario Flights

Explore a world of travel with Expedia

*Available to One Key members.