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$79+ 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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
Apr 21 — Apr 281
Mon 4/21
Mon 4/28
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 April 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$223
(Kiwi.com)

One-way from

$79
(Kiwi.com)

Popular in

March

Cheapest in

May

Average price

$531
Provider with most accurate pricing for Portland-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Portland-Toronto (YTO) flights.
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From Portland to Ontario
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One-way flight from Portland to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($100 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 April 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 April 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Wed 5/281:37 pmPDX - YYZ
2 stops13h 37mMultiple Airlines
Wed 6/49:45 amYYZ - PDX
1 stop10h 00mMultiple Airlines
Deal found 4/15$223
This Trip.com deal was found by Cheapflights users on 4/16. 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 7/81:45 pmPDX - YYZ
1 stop7h 39mWestJet
Fri 8/88:00 amYYZ - PDX
1 stop7h 52mWestJet
Deal found 4/16$235
This Gotogate deal was found by Cheapflights users on 4/16. 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.
Sun 6/13:25 pmPDX - YUL
2 stops12h 45mMultiple Airlines
Tue 6/107:00 amYUL - PDX
1 stop8h 52mMultiple Airlines
Deal found 4/16$246
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/11:45 pmPDX - YUL
1 stop7h 58mWestJet
Tue 6/107:00 amYUL - PDX
1 stop8h 52mWestJet
Deal found 4/16$248
This Trip.com deal was found by Cheapflights users on 4/16. 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.
Sat 5/311:45 pmPDX - YOW
1 stop7h 57mWestJet
Sat 6/76:10 amYOW - PDX
2 stops9h 42mWestJet
Deal found 4/16$268
This Air Canada deal was found by Cheapflights users on 4/15. 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.
Tue 8/193:25 pmPDX - YUL
2 stops12h 45mAir Canada
Wed 8/2010:15 amYUL - PDX
2 stops11h 31mAir Canada
Deal found 4/15$285
This Air Canada deal was found by Cheapflights users on 4/15. 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.
Mon 6/237:40 pmPDX - YYZ
2 stops11h 49mAir Canada
Tue 7/17:00 pmYYZ - PDX
1 stop8h 45mAir Canada
Deal found 4/15$292
This American Airlines deal was found by Cheapflights users on 4/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/53:24 pmPDX - YYZ
1 stop18h 06mAmerican Airlines
Fri 5/96:30 amYYZ - PDX
1 stop6h 54mAmerican Airlines
Deal found 4/15$317
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/410:47 pmPDX - YYZ
1 stop10h 59mUnited Airlines
Wed 5/76:20 pmYYZ - PDX
1 stop7h 33mUnited Airlines
Deal found 4/15$341
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/311:37 pmPDX - YOW
3 stops23h 43mMultiple Airlines
Sat 6/76:10 amYOW - PDX
2 stops9h 42mMultiple Airlines
Deal found 4/16$356
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/159:30 pmPDX - YYZ
1 stop11h 43mDelta
Sat 6/211:04 pmYYZ - PDX
1 stop10h 19mDelta
Deal found 4/16$363
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/215:00 amPDX - YUL
1 stop15h 26mUnited Airlines
Tue 5/274:45 pmYUL - PDX
1 stop10h 45mUnited Airlines
Deal found 4/15$365

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 16, 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

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 5/28

1:37 pm-6:14 am

2 stops13h 37m

Toronto Pearson Intl

Wed 6/4

9:45 am-4:45 pm

1 stop10h 00m

$223

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 7/8

1:45 pm-12:24 am

1 stop7h 39m

Toronto Pearson Intl

Fri 8/8

8:00 am-12:52 pm

1 stop7h 52m

$235

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sun 6/1

3:25 pm-7:10 am

2 stops12h 45m

Montreal Pierre Elliott Trudeau Intl

Tue 6/10

7:00 am-12:52 pm

1 stop8h 52m

$246

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sun 6/1

1:45 pm-12:43 am

1 stop7h 58m

Montreal Pierre Elliott Trudeau Intl

Tue 6/10

7:00 am-12:52 pm

1 stop8h 52m

$248

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 5/31

1:45 pm-12:42 am

1 stop7h 57m

Ottawa

Sat 6/7

6:10 am-12:52 pm

2 stops9h 42m

$268

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Tue 8/19

3:25 pm-7:10 am

2 stops12h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 8/20

10:15 am-6:46 pm

2 stops11h 31m

$285

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 6/23

7:40 pm-10:29 am

2 stops11h 49m

Toronto Pearson Intl

Tue 7/1

7:00 pm-12:45 am

1 stop8h 45m

$292

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 5/5

3:24 pm-12:30 pm

1 stop18h 06m

Toronto Pearson Intl

Fri 5/9

6:30 am-10:24 am

1 stop6h 54m

$317

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sun 5/4

10:47 pm-12:46 pm

1 stop10h 59m

Toronto Pearson Intl

Wed 5/7

6:20 pm-10:53 pm

1 stop7h 33m

$341

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 5/31

1:37 pm-4:20 pm

3 stops23h 43m

Ottawa

Sat 6/7

6:10 am-12:52 pm

2 stops9h 42m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 33 results
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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 July is currently the most expensive (average of $359). 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 April 16, 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 16, 2025.
See what other customers who have flown with Alaska Airlines, Delta and United Airlines from Portland to Ontario have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,665 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
WestJet
7.2
Good
2,806 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    $101 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on American Airlines and Air Canada, with prices starting from $118 and $138, 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 - Ottawa, 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 July is currently the most expensive (average of $359). 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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Alternative routes for Portland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Vancouver Intl flights
Portland to Pearson Intl flights
Portland to Calgary flights
Portland to Pierre Elliott Trudeau Intl flights
Boise to Vancouver Intl flights
Portland to Victoria flights
Boise to Calgary flights
Portland to Edmonton flights
Portland to Ottawa flights
Portland to Halifax flights
Medford to Vancouver Intl flights
Portland to Winnipeg flights
Redmond to Vancouver Intl flights
Portland to Québec City flights
Portland to Saskatoon flights
Portland to Kelowna flights
Boise to Pierre Elliott Trudeau Intl flights
Portland to Toronto Island flights
Boise to Victoria flights
Eugene to Pearson Intl flights
Eugene to Vancouver Intl flights
Redmond to Halifax flights
Boise to Pearson Intl flights
Redmond to Calgary flights
Medford to Pearson Intl flights
Boise to Halifax flights
Portland to Comox flights
Medford to Hamilton flights
Yakima to Vancouver Intl flights
Redmond to Pearson Intl flights
Boise to Québec City flights
Medford to Pierre Elliott Trudeau Intl flights
Portland to St. John's flights
Portland to Regina flights
Portland to Williams Lake flights
Medford to Ottawa flights
Portland to Whitehorse flights
Eugene to Pierre Elliott Trudeau Intl flights
Eugene to Ottawa flights
Portland to Yellowknife flights
Eugene to Edmonton flights
Portland to Fredericton flights
Boise to Hamilton flights
Portland to Kamloops flights
Yakima to Edmonton 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 April 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$548FlexibilityNo cancel feeOn-time67%
WestJetCheapest$207Average$353FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$296Average$620FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$317Average$466FlexibilityNo cancel feeOn-time75%
DeltaCheapest$317Average$473FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$348Average$598FlexibilityNo cancel feeOn-time71%

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