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Cheap Flight Deals from Ontario to Portland

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Round TripOne Way
LAX Los Angeles
PDX Portland
From $133.90
Feb 14, 2026 - Feb 18, 2026
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*All fares above were last found on:
Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions.

When’s a good time to book a flight from Ontario to Portland?

What’s the cheapest day of the week to fly from Ontario to Portland?‡

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What is the cheapest month to fly from Ontario to Portland?‡

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‡This information is based on historical data from the last 365 days.

Finding Affordable Flights from Ontario to Portland
  • Plan Ahead - One of the keys to securing cheap flights from Ontario to Portland is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
  • Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
  • Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from Ontario to Portland drop, giving you the opportunity to grab cheap deals.
  • Consider Nearby Airports - If Portland has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
  • Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.

When is the Cheapest Time to Book Flights from Ontario to Portland?

‡

Got flexible travel dates? Use our flight data from the past year to discover ideal times to fly from Ontario to Portland. Find out which months and days typically offer lower fares and score our best savings.

CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip

‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.

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Ontario to Portland Flight Route Information

Travel Distance:839 Miles
Airlines Flying This Route: Alaska Airlines
Weekly Flights:24
Avg. Flight Duration:02.18 Hours

Insights About Flying from Ontario to Portland

Q. Which is the high season to travel from Ontario to Portland?

A. The month of November is considered the high season for flying from ONT to PDX. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.

Q. How many direct flights are available from ONT to PDX?

A. There are a total of 97 direct flights from Ontario to Portland. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.

Q. Which is the low season to travel from Ontario to Portland?

A. April is considered the low season for traveling from Ontario to Portland, Oregon. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.

Q. How many daily flights are there between Ontario to Portland?

A. There are as many as 3 daily flights available for travelers between ONT to PDX. This data offers flexibility in choosing departure times that best suit your schedule.

Q. Which is the busiest day for passengers flying between Ontario to Portland?

A. Friday are the busiest days for passengers flying between Ontario to Portland. Knowing the peak travel day can help you plan your trip to avoid overcrowded flights or airports.

Q. At what time does the last flight depart to Portland?

A. The last flight to Portland typically departs between 12:00AM - 1:00AM. Travelers who prefer late-night departures will find this information valuable for planning their journey.

Q. What percentage of travelers spent an average of 1 days in Portland, Oregon?

A. Approximately 26.23% of travelers spent an average of 1 days exploring Portland. This information can assist in planning the duration of your stay in Portland

Q. What percentage of ONT to PDX flyers traveled with kids under 14?

A. About 5% of passengers on flights from Ontario to Portland were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.

Q. What percentage of Ontario to Portland travelers were over 60 years old?

A. A notable 25% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.

Q. What percentage of ONT to PDX travelers were millennials?

A. Millennials make up a significant portion of travelers on this route, accounting for 26% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.

Q. What percentage of Ontario to Portland travelers were female?

A. Almost half of the passengers, approximately 65% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.

Q. At what time the earliest flight departs from Ontario?

A. The earliest flight departs at 6:00AM - 7:00AM.

Q. On which days one can have the most flight options in Portland?

A. Friday offer the most flight options in Portland.

§ All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.

Cheap Flights from Ontario to Portland

Flights from Ontario to Portland

Looking for flights from Ontario to Portland? Look no more, for you�re at the right place. Book cheap flights from Ontario to Portland on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab ONT to PDX flight deals, and save big!

Airports in Ontario

Ontario International Airport is the primary airport serving Ontario in California, US. It is located two miles away from downtown Ontario and 38 miles away from Downtown Los Angeles. The airport serves domestic and international flights. Passengers can avail seamless connectivity between the airport and the city through a network of Buses & Rails, Hotel Shuttles, app-based transportation services, ride shares, taxis, ONT Courtesy Shuttle and public transport.

Explore Portland

Portland is the largest city in the U.S. state of Oregon. It is situated between the Columbia and Willamette rivers, and is about 70 miles away from Pacific Coast. Nicknamed �the City of Roses� for its rose trees, Portland is famous for its natural beauty, microbreweries and some hundred year old bridges. Three such bridges are Hawthorne Bridge (built in 1910), Steel Bridge (built in 1912), and Broadway Bridge (built in 1913).

Things to do in Portland

Hawthorne Bridge

The Hawthorne Bridge is the oldest highway bridge in Portland, the busiest bicycle and Transit Bridge in Oregon and the oldest working vertical lift bridge in the United States. This 1382-feet-long bridge spans the Willamette River in Portland and was opened to public in 1910.

Oregon Museum of Science and Industry

The Oregon Museum of Science and Industry features several children-centric interactive activities and experiments related to technology and earth sciences. It features a planetarium and an IMAX theater and stands facing an old US Navy submarine (the USS Blueback).

Lan Su Chinese Garden

The Lan Su Chinese Garden (formerly called the Portland Classical Chinese Garden) is a Chinese garden located near Portland. It is a delightful sum of many traditional gardens and almost 90% of its plants are indigenous to China. Some plants here are even 100 years old.

Best Time to Fly to Portland

The best time to fly to Portland is the summer season from June to August. With its gardens are in full bloom, the city is busy celebrating Portland Rose Festival and Waterfront Blues Festival.

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