RM370 Cheap Flights from Portland (PDX) to Ontario (ONT)

View RM370 flight on Tue, 13 Jan 2026Opens in a new window

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

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Cheap Flights from Portland to Ontario (PDX-ONT)

Prices were available within the past 7 days and start at RM370 for one-way flights and RM739 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM739 Return, found 1 day ago
RM739
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM739 found 1 day ago
Delta
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM845 Return, found 1 day ago
RM845
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM845 found 1 day ago
Delta
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM864 Return, found 1 day ago
RM864
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM864 found 1 day ago
United
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM970 Return, found 1 day ago
RM970
Return
found 1 day ago
Select United flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM970 found 1 day ago
United
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM989 Return, found 1 day ago
RM989
Return
found 1 day ago
Select United flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM989 found 1 day ago
Delta
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM991 Return, found 1 day ago
RM991
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM991 found 1 day ago
Delta
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM992 Return, found 1 day ago
RM992
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM992 found 1 day ago
Delta
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM1,010 Return, found 1 day ago
RM1,010
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM1,010 found 1 day ago
Delta
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM1,011 Return, found 1 day ago
RM1,011
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM1,011 found 1 day ago
American Airlines
Tue, 6 Jan - Tue, 13 Jan
PDX
Portland
ONT
Ontario
RM1,091 Return, found 1 day ago
RM1,091
Return
found 1 day ago
Select American Airlines flight, departing Tue, 6 Jan from Portland to Ontario, returning Tue, 13 Jan, priced at RM1,091 found 1 day ago

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

October is typically the cheapest month to fly

From RM 323 - RM 635 per traveller.
Portland to Ontario route information
Origin airport
Portland Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Delta, United
Return price
RM739
Distance
1342 km
Average flight time
2 hours 43 mins

Perfect flights from Portland to Ontario

Your Journey from Portland to Ontario

Start your unforgettable journey with Expedia. Our broad selection of flights from Portland to Ontario caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, American Airlines, United. Our selection of flights from Portland Intl. to Los Angeles - Ontario 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 Portland to Ontario Flights

Experience the joy of finding cheap flights from Portland Intl. to Los Angeles - Ontario Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM370 and roundtrip prices from RM739*.
 

Pre-Flight Essentials

Ensure a smooth journey from Portland to Ontario with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Ontario

Picture yourself stepping off the plane in Ontario 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 Portland to Ontario 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 Portland to Ontario.
 

Beyond the Flight – Exploring Ontario

With Expedia, your adventure extends beyond the flight. Explore Ontario 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 Portland to Ontario 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 Portland to Ontario with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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