Cheap Flights from Ontario Intl. Airport (ONT) to Portland (PDX)

View AU$144 flight on Wed, 20 May 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 Intl. Airport (ONT) to Portland (PDX)

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

Alaska Airlines
Wed, 20 May - Wed, 3 June
ONT
Ontario
PDX
Portland
AU$275 Return, found 1 day ago
AU$275
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Ontario to Portland, returning Wed, 3 June, priced at AU$275 found 1 day ago
Delta
Wed, 20 May - Wed, 3 June
ONT
Ontario
PDX
Portland
AU$288 Return, found 1 day ago
AU$288
Return
found 1 day ago
Select Delta flight, departing Wed, 20 May from Ontario to Portland, returning Wed, 3 June, priced at AU$288 found 1 day ago
Delta
Wed, 20 May - Wed, 3 June
ONT
Ontario
PDX
Portland
AU$289 Return, found 1 day ago
AU$289
Return
found 1 day ago
Select Delta flight, departing Wed, 20 May from Ontario to Portland, returning Wed, 3 June, priced at AU$289 found 1 day ago
Delta
Wed, 20 May - Wed, 3 June
ONT
Ontario
PDX
Portland
AU$310 Return, found 1 day ago
AU$310
Return
found 1 day ago
Select Delta flight, departing Wed, 20 May from Ontario to Portland, returning Wed, 3 June, priced at AU$310 found 1 day ago
Alaska Airlines
Thu, 28 May - Sat, 6 June
ONT
Ontario
PDX
Portland
AU$317 Return, found 1 day ago
AU$317
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 28 May from Ontario to Portland, returning Sat, 6 June, priced at AU$317 found 1 day ago
Delta
Wed, 20 May - Wed, 3 June
ONT
Ontario
PDX
Portland
AU$324 Return, found 1 day ago
AU$324
Return
found 1 day ago
Select Delta flight, departing Wed, 20 May from Ontario to Portland, returning Wed, 3 June, priced at AU$324 found 1 day ago
Delta
Thu, 28 May - Sat, 6 June
ONT
Ontario
PDX
Portland
AU$344 Return, found 1 day ago
AU$344
Return
found 1 day ago
Select Delta flight, departing Thu, 28 May from Ontario to Portland, returning Sat, 6 June, priced at AU$344 found 1 day ago
Delta
Thu, 28 May - Sat, 6 June
ONT
Ontario
PDX
Portland
AU$345 Return, found 1 day ago
AU$345
Return
found 1 day ago
Select Delta flight, departing Thu, 28 May from Ontario to Portland, returning Sat, 6 June, priced at AU$345 found 1 day ago
United
Thu, 28 May - Sat, 6 June
ONT
Ontario
PDX
Portland
AU$428 Return, found 1 day ago
AU$428
Return
found 1 day ago
Select United flight, departing Thu, 28 May from Ontario to Portland, returning Sat, 6 June, priced at AU$428 found 1 day ago
American Airlines
Thu, 28 May - Sat, 6 June
ONT
Ontario
PDX
Portland
AU$502 Return, found 1 day ago
AU$502
Return
found 1 day ago
Select American Airlines flight, departing Thu, 28 May from Ontario to Portland, returning Sat, 6 June, priced at AU$502 found 1 day ago

Frequently asked questions

How much does a flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Portland, OR (PDX-Portland Intl.) cost?
One-way flights typically cost between $360 and $1,338 and return flights often range between $1,467 and $3,920. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to PDX ticket fares go up or down.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Portland, OR (PDX-Portland Intl.)?
Enter ONT to PDX and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Portland, OR (PDX-Portland Intl.)?
Flying nonstop from ONT to PDX takes around 2 hours 30 minutes, with the route covering approximately 839 miles. Flights with a layover typically take 4 hours longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Portland, OR (PDX-Portland Intl.)?
Select the "Business class" and "First class" filters when looking for ONT to PDX flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
What airports do you fly into for Portland from Los Angeles - Ontario Intl. (ONT)?
When traveling from Los Angeles - Ontario Intl. (ONT) to Portland, you can fly into Portland Intl. Jetport (PWM) and Portland Intl. (PDX). Some flights may connect through major hubs like Denver Intl. (DEN), Sky Harbor Intl. (PHX), Dallas-Fort Worth Intl. (DFW) before reaching Portland. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Portland Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
AU$274
Distance
1342 km
Average flight time
2 hours 25 mins

Book with confidence

Your quick guide to flights from Ontario Intl. Airport to Portland

Pick up great flights from Ontario Intl. Airport to Portland

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Ontario Intl. Airport to Portland. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Ontario Intl. Airport to Portland that take around hours.

Find cheap flights from Ontario Intl. Airport to Portland

From the great flight deals with prices currently ranging from AU$275 to AU$502, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Ontario Intl. Airport to Portland around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Portland is normally in May.

Reasons to book your flight from Ontario Intl. Airport to Portland with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Ontario Intl. Airport to Portland across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Portland right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Ontario Intl. Airport to Portland

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