S$164 Cheap Flights from Ontario to Portland

View S$164 flight on Thu, 30 Apr, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Portland International Airport (PDX)

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Cheap Flights from Ontario to Portland (ONT-PDX)

Prices were available within the past 7 days and start at S$164 for one-way flights and S$301 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$301 Return, found 1 day ago
S$301
Return
found 1 day ago
Select United flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$301 found 1 day ago
Delta
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$319 Return, found 1 day ago
S$319
Return
found 1 day ago
Select Delta flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$319 found 1 day ago
United
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$326 Return, found 1 day ago
S$326
Return
found 1 day ago
Select United flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$326 found 1 day ago
United
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$333 Return, found 1 day ago
S$333
Return
found 1 day ago
Select United flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$333 found 1 day ago
Delta
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$345 Return, found 1 day ago
S$345
Return
found 1 day ago
Select Delta flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$345 found 1 day ago
United
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$346 Return, found 1 day ago
S$346
Return
found 1 day ago
Select United flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$346 found 1 day ago
United
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$358 Return, found 1 day ago
S$358
Return
found 1 day ago
Select United flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$358 found 1 day ago
Delta
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$364 Return, found 1 day ago
S$364
Return
found 1 day ago
Select Delta flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$364 found 1 day ago
United
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$370 Return, found 1 day ago
S$370
Return
found 1 day ago
Select United flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$370 found 1 day ago
American Airlines
Thu, 30 Apr - Sun, 10 May
ONT
Ontario
PDX
Portland
S$701 Return, found 1 day ago
S$701
Return
found 1 day ago
Select American Airlines flight, departing Thu, 30 Apr from Ontario to Portland, returning Sun, 10 May, priced at S$701 found 1 day ago

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Find the cheapest month to fly from Ontario (ONT) to Portland (PDX)

October is typically the cheapest month to fly

From S$104 - S$308 per traveller.

Frequently asked questions

How much is a flight from Los Angeles - Ontario Intl. Airport (ONT) to PDX?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip journey from ONT to PDX was S$301. Cheap tickets don't hang around forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from ONT to Portland Airport?
This varies between air carriers, as each one has its own set of terms and conditions. Visit the Customer Service Portal, where you'll find instructions on how to cancel online.
How do I find cheap flights from ONT to PDX that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Los Angeles - Ontario Intl. Airport (ONT) to PDX Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from ONT to Portland Intl. Airport (PDX)?
That new movie you've been eager to see will have to wait — the flight distance between Los Angeles - Ontario Intl. Airport (ONT) (ONT) and Portland Airport (PDX) is only 1,350 kilometres. The captain will be instructing you to buckle up for landing before you know it.
Which airlines fly direct from ONT to PDX Airport?
Check out the deals on offer with Alaska Airlines (AS) if you want to fly straight from Los Angeles - Ontario Intl. Airport (ONT) to Portland Airport. This popular carrier offers 26 flights monthly, so you're sure to find one that fits your travel schedule.
Are Ontario Airport to PDX flight tickets cheaper when they're purchased at the last minute?
Booking your trip from ONT to Portland Intl. Airport (PDX) at the last minute could be your ticket to a cheap deal. However, it could end up costing you a whole lot more! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated all the time on Expedia.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Portland Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$300
Distance
1342 km
Average flight time
3 hours 23 mins

Book with confidence

Perfect flights from Ontario to Portland

Your Journey from Ontario to Portland

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, Delta, American Airlines. Our selection of flights from Los Angeles - Ontario Intl. to Portland Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Ontario to Portland Flights

Experience the joy of finding cheap flights from Los Angeles - Ontario Intl. to Portland Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$164 and roundtrip prices from S$301*.
 

Pre-Flight Essentials

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Experience the Vibrant Portland

Picture yourself stepping off the plane in Portland and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Ontario to Portland Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Ontario to Portland.
 

Beyond the Flight – Exploring Portland

With Expedia, your adventure extends beyond the flight. Explore Portland at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Ontario to Portland with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Ontario to Portland with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Ontario to Portland

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