Cheap Flights from Ontario International to Portland

Compare Ontario International to Portland flight deals

Find the cheapest month or even day of the year to fly to Portland

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Flight deals from Ontario International to Portland

Looking for a cheap last-minute deal or the best round-trip flight from Ontario International Airport to Portland Airport? If you want to travel next month, round-trip fares start from AED 1,465. Find the lowest prices on one-way and round-trip tickets right here.

Portland.AED 616 per passenger.Departing Tue, Jul 28.One-way flight with jetBlue.Outbound indirect flight with jetBlue, departing from Ontario International on Tue, Jul 28, arriving in Portland.Price includes taxes and charges.From AED 616, select.

Portland.AED 693 per passenger.Departing Tue, Aug 25.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Tue, Aug 25, arriving in Portland.Price includes taxes and charges.From AED 693, select.

Portland.AED 693 per passenger.Departing Wed, Sep 9.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Wed, Sep 9, arriving in Portland.Price includes taxes and charges.From AED 693, select.

Portland.AED 823 per passenger.Departing Wed, Nov 18.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Wed, Nov 18, arriving in Portland.Price includes taxes and charges.From AED 823, select.

Portland.AED 840 per passenger.Departing Thu, May 28.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Thu, May 28, arriving in Portland.Price includes taxes and charges.From AED 840, select.

Portland.AED 952 per passenger.Departing Sat, Jun 13.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Sat, Jun 13, arriving in Portland.Price includes taxes and charges.From AED 952, select.

Portland.AED 987 per passenger.Departing Thu, Oct 15.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Thu, Oct 15, arriving in Portland.Price includes taxes and charges.From AED 987, select.

Find the cheapest month to fly from Ontario International to Portland

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Portland flights are currently cheapest in July.

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Ontario International to Portland: Alternative routes

Compare routes from Ontario International to Portland below. You may find an airport to fly into that's cheaper, faster, or easier than Portland.

Ontario to Portland: Flight information

The things to know before you go.

Cheapest flight found	AED 616
Cheapest month to fly	July

Finding cheap flights from Ontario International to Portland: Frequently asked questions

How much are round-trip flights from Ontario International to Portland?

The best price we found for a round-trip flight from Ontario International to Portland is AED 1,203. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Ontario International to Portland?

Currently, there are no airlines that fly direct from Ontario International to Portland. But we found flights with one or more stops from AED 1,203.

How many flights are there a week from Ontario International to Portland?

There are no flights flying from Ontario International to Portland, as of May 2026.

When is the cheapest time to fly from Ontario International to Portland?

The cheapest month to fly from Ontario International to Portland is usually August.

Which upcoming date is cheapest to fly from Ontario International Airport to Portland Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Portland Airport on Saturday, August 15, 2026.

Can I get a direct flight from Ontario International Airport to Portland Airport?

No airlines currently offer direct flights between Ontario International Airport and Portland Airport. Most routes have one or more stops.

How can I find the best flight deal to Portland?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Portland but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Portland?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Portland is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Ontario International Airport to Portland?

Currently, jetBlue offers the cheapest flight tickets to Portland.

Flying from Ontario International Airport (ONT) to Portland International Jetport Airport (PWM): what you need to know

To ensure you catch your ONT to PWM flight, leave enough time for things like check-in and baggage drop. Turning up two hours ahead of international departures and an hour before domestic flights is the standard rule.
Traveling during a peak time such as August? Public holidays and other popular periods can lead to longer lines at airport checkpoints. Be extra cautious and get there up to four hours ahead of international flights and two hours before a domestic departure.
If you want to explore another city along the way, simply deselect 'Direct flights only' when searching for your ticket from Ontario International Airport to Portland International Jetport Airport. Here are the most popular stopovers between ONT and PWM:
- Chicago Midway International Airport
- Denver International Airport
- Dallas/Fort Worth International Airport

How to find the cheapest flights from Ontario International Airport (ONT) to Portland International Jetport Airport (PWM)

The cheapest price we've seen for a one-way Ontario International Airport to Portland International Jetport Airport flight is AED 616. A round-trip plane ticket is currently AED 1,203. Depending on the availability when you book, these fares could change.
To score cheap tickets from ONT to PWM, book ahead. Airlines tend to offer lower prices when flights are first released.
The 'Whole month' tool shows you the cheapest flights from Ontario International Airport to Portland International Jetport Airport across each month. It's a great way to snap up a bargain if your dates aren't set in stone.
Snapping up cheap flights from ONT to PWM is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know as soon as a new deal comes up.
Secure the perfect flight for you by using the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Ontario International Airport to Portland International Jetport Airport, use the 'Sort by' tool. You can also filter results by arrival and departure times, airline, and journey duration.

Handy information about Ontario International Airport (ONT)

ONT is located at 2900 E. Airport Drive.
83.6% of flights leaving Ontario International Airport touch down at their destination according to schedule. With its solid on-time performance, you're unlikely to experience delays when flying out of ONT.
To reach Ontario International Airport from central Ontario, it takes about 10 minutes if you're planning to drive. This depends on traffic, however. It's approximately 6 kilometers from the airport to the city center.
Expect a trip time of roughly 1 hour 30 minutes on public transport.
Get your break off to a leisurely start by staying near ONT. Whether you're catching an early flight from Ontario International Airport to Portland International Jetport Airport or just don't want to be rushed, these stays are perfect:

Arriving at Portland International Jetport Airport (PWM)

The last thing you need is a long trip to your hotel if you're landing late on an Ontario International Airport to Portland International Jetport Airport flight. Reserve one of these accommodation options near PWM instead:
Go where the road takes you with a Portland International Jetport Airport rental car. Pick up your wheels from Dollar, Budget or Hertz and discover more of Portland and beyond.
Reserving your ride from Portland International Jetport Airport about one week in advance can help you get the lowest rate.

Getting from Portland International Jetport Airport (PWM) to central Portland

The address for PWM is 1001 Westbrook Street.
From Portland International Jetport Airport, Portland is approximately 8 kilometers away. It takes around 15 minutes to reach the center by car.
If you're using public transport, expect a journey time of around 40 minutes.

When to fly to Portland International Jetport Airport (PWM)

The quietest month for a flight from Ontario International Airport to Portland International Jetport Airport is March, while August is the most popular. Choose the best time to go to Portland based on whether you prefer a more fast-paced or easygoing experience.
The warmest month in Portland is July, with temperatures ranging between 14ºC (57ºF) and 25ºC (77ºF). Book your flights from Ontario International Airport to Portland International Jetport Airport in this month if you like this kind of weather.
If you want to travel in cooler conditions, look for a cheap ticket from ONT to PWM in January. Average temperatures are between -10ºC (14ºF) and 3ºC (37ºF) then.

Explore more of United States

Portland is easy to fall in love with, but there are so many other corners of United States you should also see. Around 451 kilometers south-west of Portland, a visit to New York will keep you on the move. Start with leading sights like Statue of Liberty, Central Park and Empire State Building.
If you're looking to explore another side of United States, head for Boston, roughly 161 kilometers south-west of Portland. Freedom Trail, Museum of Fine Arts Boston and Boston Tea Party Ships & Museum are highlights.