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$118+ Cheap flights from Portland (PDX) to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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Cheap flight deals from Portland to Ontario

Cheapest flights from Portland to Ontario
Explore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.

This Trip.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/152:30 pm
PDX
-
YYZ
1 stop7h 35m
WestJet
Wed 7/227:00 am
YYZ
-
PDX
1 stop9h 50m
WestJet
Deal found 4/22$222
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/102:30 pm
PDX
-
YYZ
1 stop7h 35m
WestJet
Wed 7/229:00 am
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 4/22$229
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/22:30 pm
PDX
-
YYZ
1 stop7h 35m
WestJet
Wed 8/129:00 am
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 4/22$239
This FlightHub deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/312:30 pm
PDX
-
YYZ
2 stops11h 40m
WestJet
Wed 8/129:00 am
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 4/21$243
This FlightHub deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:30 pm
PDX
-
YYZ
1 stop7h 35m
WestJet
Mon 8/317:00 am
YYZ
-
PDX
1 stop9h 50m
WestJet
Deal found 4/22$247
This Justfly.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/312:30 pm
PDX
-
YYZ
2 stops11h 40m
WestJet
Fri 8/76:10 am
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 4/21$248
This FlightHub deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/112:30 pm
PDX
-
YYZ
2 stops11h 40m
WestJet
Wed 7/226:10 am
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 4/22$249
This Booking.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:30 pm
PDX
-
YYZ
2 stops11h 40m
WestJet
Tue 9/16:10 am
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 4/22$251
This Justfly.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/132:30 pm
PDX
-
YYZ
2 stops11h 40m
WestJet
Wed 7/226:10 am
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 4/22$254
This Trip.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:30 pm
PDX
-
YYZ
1 stop7h 35m
WestJet
Fri 8/148:00 pm
YYZ
-
PDX
1 stop20h 50m
WestJet
Deal found 4/22$256
This Trip.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:30 pm
PDX
-
YYZ
1 stop7h 35m
WestJet
Fri 6/127:00 am
YYZ
-
PDX
1 stop9h 50m
WestJet
Deal found 4/21$262
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:30 pm
PDX
-
YUL
1 stop13h 35m
WestJet
Wed 9/167:15 am
YUL
-
PDX
1 stop9h 35m
WestJet
Deal found 4/22$306

Find flight deals from Portland to Ontario

Keep the following information in mind while searching for Portland to Ontario flight deals. Data was last updated April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$222
(Trip.com)

One-way from

$118
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$413
Provider with most accurate pricing for Portland-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Toronto (YTO) flights.
Search Deals
From Portland to Ontario
Search Deals
One-way flight from Portland to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
Use the filters below to find and compare flights from Portland to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 6/6

2:30 pm-1:05 am

1 stop7h 35m

Toronto Pearson Intl

Fri 6/19

9:00 am-1:50 pm

1 stop7h 50m

$267

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 6/6

2:30 pm-1:05 am

1 stop7h 35m

Toronto Pearson Intl

Wed 6/10

6:10 am-1:50 pm

2 stops10h 40m

$329

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 6/26

5:00 pm-9:54 am

1 stop13h 54m

Toronto Pearson Intl

Fri 9/18

1:00 pm-11:09 pm

1 stop13h 09m

$354

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 5/6

11:15 pm-11:19 am

1 stop9h 04m

Toronto Pearson Intl

Tue 5/19

2:20 pm-10:02 pm

1 stop10h 42m

$361

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 5/25

11:30 pm-10:04 am

1 stop7h 34m

Toronto Pearson Intl

Wed 5/27

5:16 pm-11:03 pm

1 stop8h 47m

$361

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 7/20

11:15 pm-1:34 pm

1 stop11h 19m

Toronto Pearson Intl

Mon 7/27

2:24 pm-9:48 pm

1 stop10h 24m

$361

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 5/13

10:55 pm-9:54 am

1 stop7h 59m

Toronto Pearson Intl

Sat 5/23

2:35 pm-9:24 pm

1 stop9h 49m

$361

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 5/4

11:15 pm-1:24 pm

1 stop11h 09m

Toronto Pearson Intl

Mon 6/1

5:45 pm-11:44 pm

1 stop8h 59m

$361

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 5/4

11:15 pm-1:24 pm

1 stop11h 09m

Toronto Pearson Intl

Sun 5/24

6:30 am-10:53 am

1 stop7h 23m

$361

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Wed 6/3

11:58 am-11:41 pm

1 stop8h 43m

Montreal Pierre Elliott Trudeau Intl

Mon 6/8

12:48 pm-6:49 pm

1 stop9h 01m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Portland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Ontario

What is the cheapest month to book a flight from Portland to Region of Ontario?

Currently, October is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $103). Flying from Portland to Region of Ontario in June is currently the most expensive (average of $149). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Portland to Region of Ontario?

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated April 23, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Portland to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,273 reviews

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,273 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Delta
7.9
Good
8,435 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
United Airlines
7.4
Good
9,635 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
American Airlines
7.1
Good
11,655 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Air Canada
7.1
Good
10,955 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Related info for your journey

Find useful and relevant information for your journey from Portland to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Ontario?

    Located just 6.0 mi from the city center, Portland (PDX) is the airport most travelers will use when flying to Ontario from Portland.

  • How long is the flight from Portland to Region of Ontario?

    WestJet, United Airlines, and Delta can get you from Portland to Region of Ontario in just under 7h 35m. Your travel time can differ by up to 6h 19m. There are 2090 mi between Portland and Region of Ontario. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Portland to Region of Ontario one-way?

    $90 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on WestJet and United Airlines, with prices starting from $105 and $117, respectively.

  • What are the most popular routes from Portland to Region of Ontario?

    While some choose either Portland - Montreal Pierre Elliott Trudeau Intl or Portland - Toronto Island, Portland - Toronto Pearson Intl is the most popular route from Portland to Region of Ontario.

  • Can I find deals for flights from Portland to Ontario that include hotel bookings?

    Yes. In addition to deals on Portland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Ontario.

  • Can I find deals for business class flights from Portland to Ontario?

    Yes. Cheapflights offers flight deals from Portland to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Region of Ontario?

    Currently, October is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $103). Flying from Portland to Region of Ontario in June is currently the most expensive (average of $149). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 6 airlines flying from Portland to Ontario

Discover the top 6 airlines that operate flights from Portland to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$113Average$276FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$140Average$592FlexibilityNo cancel feeOn-time67%
DeltaCheapest$144Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$148Average$572FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$343Average$504FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$344Average$573FlexibilityNo cancel feeOn-time75%

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