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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

Book the best Portland fare with no extra fees

Flight deals from Ontario International to Portland

Looking for a cheap last-minute deal or the best return flight from Ontario International to Portland? Find the lowest prices on one-way and return tickets right here.
Portland.$114 per passenger.Departing Thu, 14 Nov, returning Sat, 16 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Ontario International on Thu, 14 Nov, arriving in Portland.Inbound direct flight with Frontier Airlines departs from Portland on Sat, 16 Nov, arriving in Ontario International.Price includes taxes and charges.From $114, select.
Portland.$115 per passenger.Departing Wed, 19 Feb, returning Wed, 26 Feb.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Ontario International on Wed, 19 Feb, arriving in Portland.Inbound direct flight with Frontier Airlines departs from Portland on Wed, 26 Feb, arriving in Ontario International.Price includes taxes and charges.From $115, select.
Portland.$123 per passenger.Departing Wed, 18 Dec, returning Wed, 25 Dec.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Ontario International on Wed, 18 Dec, arriving in Portland.Inbound direct flight with Frontier Airlines departs from Portland on Wed, 25 Dec, arriving in Ontario International.Price includes taxes and charges.From $123, select.
Portland.$149 per passenger.Departing Mon, 6 Jan, returning Fri, 24 Jan.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Ontario International on Mon, 6 Jan, arriving in Portland.Inbound direct flight with Frontier Airlines departs from Portland on Fri, 24 Jan, arriving in Ontario International.Price includes taxes and charges.From $149, select.
Portland.$149 per passenger.Departing Fri, 31 Jan, returning Mon, 3 Feb.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Ontario International on Fri, 31 Jan, arriving in Portland.Inbound direct flight with Frontier Airlines departs from Portland on Mon, 3 Feb, arriving in Ontario International.Price includes taxes and charges.From $149, select.
Portland.$171 per passenger.Departing Mon, 9 Dec, returning Fri, 3 Jan.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Ontario International on Mon, 9 Dec, arriving in Portland.Inbound direct flight with Frontier Airlines departs from Portland on Fri, 3 Jan, arriving in Ontario International.Price includes taxes and charges.From $171, select.
Portland.$220 per passenger.Departing Thu, 28 Nov, returning Fri, 6 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 28 Nov, arriving in Portland.Inbound indirect flight with Frontier Airlines, departs from Portland on Fri, 6 Dec, arriving in Ontario International.Price includes taxes and charges.From $220, select.
Portland.$298 per passenger.Departing Tue, 4 Mar, returning Mon, 10 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Ontario International on Tue, 4 Mar, arriving in Portland.Inbound direct flight with Frontier Airlines departs from Portland on Mon, 10 Mar, arriving in Ontario International.Price includes taxes and charges.From $298, 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 November.
Nov
from $114
Dec
from $123
Jan
from $149
Feb
from $115
Mar
from $298
Apr
from $431
May
from $700
Jun
from $868
Jul
from $916
Aug
from $381
Sep
from $428
Oct
Find prices

Direct flights from Ontario International to Portland

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$114
Cheapest month to flyNovember
Average flight time2 hrs, 23 mins
Most popular airlineHawaiian Airlines
Average flights per week62

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

The best price we found for a return flight from Ontario International to Portland is $114. 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.
2 hours and 23 minutes is the average flight time from Ontario International to Portland.
Hawaiian Airlines, Alaska Airlines and Horizon Air fly direct from Ontario International to Portland.
As of November 2024, there are 62 flights per week flying from Ontario International to Portland.
The cheapest month to fly from Ontario International to Portland is usually November 2024.
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 Thursday, 14 November 2024.
Yes – the average flight time is 2 hours and 23 minutes.
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.
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.
Currently, Frontier Airlines offers the cheapest flight tickets to Portland.

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

  • On average, direct flights from Ontario International Airport to Portland International Airport take 2 hours 18 minutes. Portland and Ontario share the same timezone (UTC-7), so you won't need to adjust your watch after you arrive.

  • There are 26 flights from Ontario International Airport to Portland International Airport each week. Hop on the 06:00 flight if you want to set off as soon as possible. If you'd prefer to make the most of your day before leaving, the latest flight from ONT to PDX is at 20:55.

  • Heading off during a peak time like school or public holidays? Expect longer queues at security and check-in. Give yourself extra leeway and arrive up to four hours before international flights and two hours ahead of domestic departures.

  • We make it a cinch to book a flight with a stopover. To see all the options for flights from Ontario International Airport to Portland International Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Popular stopovers between ONT and PDX are:

    • San Francisco International Airport

    • Metropolitan Oakland International Airport

    • Norman Y. Mineta San Jose International Airport

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

  • The lowest price we've found for a one-way ticket from Ontario International Airport to Portland International Airport is $66. For a return flight on this route, the best price is $114. Depending on the availability when you book, these fares may change.

  • Score flight tickets from ONT to PDX by booking at least 10 months ahead. According to our research, that's the sweet spot for landing a bargain.

  • Plan your trip for June. That's the cheapest month for tickets from Ontario International Airport to Portland International Airport. If your travel dates are flexible, try out the 'Whole month' tool to see the cheapest airfare across every month.

  • Create a Price Alert for flight tickets from ONT to PDX. There's no need to check every day to find out if fares have fallen. We'll update you the moment there's a change in price.

  • Tailor your trip with filters. Select your ideal departure and arrival times, airlines and total journey duration. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from Ontario International Airport to Portland International Airport.

Handy information about Ontario International Airport (ONT)

Arriving at Portland International Airport (PDX)

Getting from Portland International Airport (PDX) to central Portland

  • From Portland International Airport, Portland is approximately 19 kilometres away. It takes around 19 minutes to reach the centre driving.

  • If you're taking public transport, expect a journey time of about 45 minutes.

When to fly to Portland International Airport (PDX)

  • The quietest month for a flight from Ontario International Airport to Portland International Airport is May, while July is the busiest. Pick the ideal time to visit Portland based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • The warmest month in Portland is August, with temperatures ranging between 12 ºC and 31 ºC. Lock in your flights from Ontario International Airport to Portland International Airport in this month if this is the kind of weather you like.

  • Search for flight tickets from ONT to PDX in December if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between 0 ºC and 9 ºC on average.

More about Portland

  • After locking in your flights from ONT to PDX, you'll want to find a place to stay in Portland. Make one of these options your base for exploring this exciting destination:

  • There are so many things to explore in this city it can be tricky to know where to start. Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion are popular attractions which should feature on any well-planned Portland itinerary.

Complete your Portland trip with hotels and a car rental

  • You've got your cheap ticket to Portland International Airport — next up is finding a great place to stay, and maybe even a set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in Portland.

Plan the rest of your trip from Ontario to Portland

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.