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$114+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Portland to Ontario

Keep the following information in mind while searching for Portland to Ontario flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$281
(Kiwi.com)

One-way from

$114
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$416
From Portland to Ontario
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One-way flight from Portland to Ontario
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Highest demand for flights based on searches. 14% potential increase in price ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 11, 2025.

This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/163:25 pmPDX - YYZ
2 stops12h 35mAir Canada
vie. 10/1710:25 amYYZ - PDX
2 stops11h 21mAir Canada
Deal found 9/9$289
This Flightnetwork deal was found by Cheapflights users on 9/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/31:45 pmPDX - YOW
1 stop7h 55mMultiple Airlines
sáb. 10/114:05 pmYOW - PDX
2 stops9h 56mMultiple Airlines
Deal found 9/10$292
This Flightnetwork deal was found by Cheapflights users on 9/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/36:15 amPDX - YOW
2 stops10h 14mAir Canada
sáb. 10/114:05 pmYOW - PDX
2 stops9h 56mAir Canada
Deal found 9/10$295
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/173:25 pmPDX - YYZ
2 stops12h 35mAir Canada
jue. 10/238:00 amYYZ - PDX
1 stop9h 46mAir Canada
Deal found 9/9$306
This Flightnetwork deal was found by Cheapflights users on 9/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/246:15 amPDX - YOW
1 stop6h 57mAir Canada
vie. 10/315:45 amYOW - PDX
2 stops12h 00mAir Canada
Deal found 9/9$308
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
sáb. 10/41:45 pmPDX - YYZ
1 stop7h 37mWestJet
vie. 10/1010:20 pmYYZ - PDX
2 stops17h 45mWestJet
Deal found 9/10$313
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/229:55 amPDX - YYZ
1 stop6h 57mAir Canada
dom. 10/267:00 amYYZ - PDX
1 stop10h 45mAir Canada
Deal found 9/10$319
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
vie. 10/31:45 pmPDX - YYZ
1 stop7h 37mMultiple Airlines
mar. 10/72:00 pmYYZ - PDX
2 stops22h 41mMultiple Airlines
Deal found 9/11$320
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
sáb. 10/111:45 pmPDX - YYZ
1 stop7h 37mMultiple Airlines
mié. 10/156:30 amYYZ - PDX
1 stop11h 18mMultiple Airlines
Deal found 9/10$321
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/237:40 pmPDX - YUL
2 stops11h 12mAir Canada
sáb. 9/277:30 amYUL - PDX
1 stop10h 16mAir Canada
Deal found 9/9$321
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
dom. 10/1911:07 amPDX - YYZ
1 stop10h 36mMultiple Airlines
lun. 10/202:00 pmYYZ - PDX
2 stops22h 41mMultiple Airlines
Deal found 9/9$322
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/153:25 pmPDX - YYZ
2 stops11h 45mAir Canada
dom. 10/1911:00 pmYYZ - PDX
2 stops13h 20mAir Canada
Deal found 9/11$323

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 septiembre 11, 2025.
Use the filters below to find and compare flights from Portland to Ontario that are best for you.

Fly from

Portland

Fly to

Ontario

Route

Depart

Return

Price

PortlandOttawa

PDX - YOW

PDXYOW

Portland

vie. 10/3

1:45 pm-12:40 am

1 stop7h 55m

Ottawa

sáb. 10/11

4:05 pm-11:01 pm

2 stops9h 56m

$292

PortlandOttawa

PDX - YOW

PDXYOW

Portland

vie. 10/3

6:15 am-7:29 pm

2 stops10h 14m

Ottawa

sáb. 10/11

4:05 pm-11:01 pm

2 stops9h 56m

$295

PortlandOttawa

PDX - YOW

PDXYOW

Portland

vie. 10/24

6:15 am-4:12 pm

1 stop6h 57m

Ottawa

vie. 10/31

5:45 am-2:45 pm

2 stops12h 00m

$308

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

jue. 10/23

9:55 am-9:11 pm

1 stop8h 16m

Toronto Pearson Intl

lun. 10/27

10:35 pm-9:15 am

1 stop13h 40m

$319

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

vie. 10/17

6:15 am-1:06 am

1 stop15h 51m

Toronto Pearson Intl

jue. 10/23

8:00 am-2:46 pm

1 stop9h 46m

$319

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

mar. 3/3

11:55 pm-1:21 pm

1 stop10h 26m

Toronto Pearson Intl

mié. 3/4

3:50 pm-10:44 pm

1 stop9h 54m

$328

PortlandMontreal

PDX - YUL

PDXYUL

Portland

mar. 9/23

7:40 pm-9:52 am

2 stops11h 12m

Montreal Pierre Elliott Trudeau Intl

mié. 10/1

10:15 am-6:46 pm

2 stops11h 31m

$333

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

jue. 10/16

3:25 pm-6:10 am

2 stops11h 45m

Toronto Pearson Intl

vie. 10/17

8:30 am-6:46 pm

1 stop13h 16m

$337

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

jue. 10/16

2:15 pm-11:58 pm

1 stop6h 43m

Toronto Pearson Intl

vie. 10/17

8:00 am-2:46 pm

1 stop9h 46m

$341

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

dom. 2/22

10:56 pm-5:54 pm

1 stop15h 58m

Toronto Pearson Intl

mié. 2/25

8:00 am-2:45 pm

1 stop9h 45m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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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, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $243). Flying from Portland to Region of Ontario in August is currently the most expensive (average of $348). 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.

What is the cheapest time of day to fly from PDX to ON?

Find hourly flight availability from Portland to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from Portland to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 septiembre 11, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United 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
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
WestJet
7.2
Good
3,091 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Air Canada
7.1
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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?

    Air Canada and Delta can get you from Portland to Region of Ontario in just under 10h 14m. Your travel time can differ by up to 4h 15m. There are 2240 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?

    $114 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and American Airlines, with prices starting from $132 and $133, 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, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $243). Flying from Portland to Region of Ontario in August is currently the most expensive (average of $348). 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.

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Alternative routes for Portland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Boise to Hamilton flights
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Portland to Kamloops flights
Eugene to Edmonton flights
Portland to Comox flights
Yakima to Edmonton flights
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Eugene to Ottawa flights
Medford to Ottawa flights
Portland to Williams Lake flights

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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$209Average$448FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$214Average$450FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$296Average$602FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$296Average$616FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$343Average$451FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$348Average$557FlexibilityNo cancel feeOn-time71%

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