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$84+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$276
(Kiwi.com)

One-way from

$84
(Kiwi.com)

Popular in

March

Cheapest in

May

Average price

$591
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. 19% potential increase in price ($103 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/297:01 pmPDX - YYZ
2 stops26h 23mMultiple Airlines
Sat 5/38:00 amYYZ - PDX
1 stop7h 52mMultiple Airlines
Deal found 3/24$276
This Trip.com deal was found by Cheapflights users on 3/24. 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 7/251:45 pmPDX - YYZ
1 stop7h 39mWestJet
Thu 7/318:00 amYYZ - PDX
1 stop7h 52mWestJet
Deal found 3/24$311
This Mytrip deal was found by Cheapflights users on 3/23. 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.
Tue 4/227:01 pmPDX - YUL
3 stops24h 46mMultiple Airlines
Tue 4/296:45 amYUL - PDX
3 stops33h 52mMultiple Airlines
Deal found 3/23$328
This Justfly.com deal was found by Cheapflights users on 3/24. 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.
Thu 7/241:45 pmPDX - YUL
1 stop7h 58mWestJet
Tue 7/297:00 amYUL - PDX
1 stop8h 52mWestJet
Deal found 3/24$335
This Justfly.com deal was found by Cheapflights users on 3/24. 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.
Sat 6/281:45 pmPDX - YOW
1 stop7h 56mWestJet
Sat 7/56:10 amYOW - PDX
2 stops9h 42mWestJet
Deal found 3/24$336
This Delta deal was found by Cheapflights users on 3/24. 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.
Mon 5/512:59 amPDX - YYZ
1 stop8h 00mDelta
Sat 5/175:50 pmYYZ - PDX
1 stop7h 11mDelta
Deal found 3/24$339
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/297:01 pmPDX - YTZ
2 stops20h 52mMultiple Airlines
Sat 5/32:00 pmYTZ - PDX
1 stop9h 34mMultiple Airlines
Deal found 3/24$347
This American Airlines deal was found by Cheapflights users on 3/23. 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 4/2111:52 pmPDX - YYZ
1 stop9h 43mAmerican Airlines
Mon 4/283:14 pmYYZ - PDX
1 stop10h 48mAmerican Airlines
Deal found 3/23$367
This Flightnetwork deal was found by Cheapflights users on 3/23. 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.
Thu 5/13:25 pmPDX - YUL
2 stops12h 45mAir Canada
Thu 5/81:30 pmYUL - PDX
2 stops12h 25mAir Canada
Deal found 3/23$375
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Mon 8/1811:59 pmPDX - YYZ
1 stop6h 59mUnited Airlines
Tue 9/212:40 pmYYZ - PDX
1 stop8h 56mUnited Airlines
Deal found 3/24$381
This Delta deal was found by Cheapflights users on 3/23. 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.
Thu 6/269:50 pmPDX - YUL
1 stop10h 50mDelta
Thu 7/312:47 pmYUL - PDX
1 stop12h 16mDelta
Deal found 3/23$387
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Thu 5/16:00 amPDX - YUL
1 stop11h 05mUnited Airlines
Sat 5/109:15 amYUL - PDX
1 stop13h 47mUnited Airlines
Deal found 3/24$409

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 March 25, 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

Tue 4/29

7:01 pm-12:24 am

2 stops26h 23m

Toronto Pearson Intl

Sat 5/3

8:00 am-12:52 pm

1 stop7h 52m

$276

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 6/5

1:45 pm-12:24 am

1 stop7h 39m

Toronto Pearson Intl

Tue 6/10

6:30 am-12:52 pm

1 stop9h 22m

$320

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Tue 4/22

7:01 pm-10:47 pm

3 stops24h 46m

Montreal Pierre Elliott Trudeau Intl

Tue 4/29

6:45 am-1:37 pm

3 stops33h 52m

$328

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Thu 7/24

1:45 pm-12:43 am

1 stop7h 58m

Montreal Pierre Elliott Trudeau Intl

Tue 7/29

7:00 am-12:52 pm

1 stop8h 52m

$335

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 6/28

1:45 pm-12:41 am

1 stop7h 56m

Ottawa

Sat 7/5

6:10 am-12:52 pm

2 stops9h 42m

$336

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 5/5

12:59 am-11:59 am

1 stop8h 00m

Toronto Pearson Intl

Sat 5/17

5:50 pm-10:01 pm

1 stop7h 11m

$339

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Tue 4/29

7:01 pm-6:53 pm

2 stops20h 52m

Toronto Island

Sat 5/3

2:00 pm-8:34 pm

1 stop9h 34m

$347

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 4/21

11:52 pm-12:35 pm

1 stop9h 43m

Toronto Pearson Intl

Mon 4/28

3:14 pm-11:02 pm

1 stop10h 48m

$367

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Thu 5/1

3:25 pm-7:10 am

2 stops12h 45m

Montreal Pierre Elliott Trudeau Intl

Thu 5/8

1:30 pm-10:55 pm

2 stops12h 25m

$375

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Thu 6/26

9:50 pm-11:40 am

1 stop10h 50m

Montreal Pierre Elliott Trudeau Intl

Thu 7/3

12:47 pm-10:03 pm

1 stop12h 16m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 32 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 March 25, 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 March 25, 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
9,782 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,785 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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?

    $143 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on WestJet and Delta, with prices starting from $149 and $165, 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 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
Portland to Edmonton flights
Boise to Calgary flights
Boise to Pearson Intl flights
Portland to Québec City flights
Portland to Ottawa flights
Portland to Toronto Island flights
Redmond to Vancouver Intl flights
Portland to Halifax flights
Eugene to Pearson Intl flights
Portland to Kelowna flights
Boise to Pierre Elliott Trudeau Intl flights
Eugene to Vancouver Intl flights
Boise to Halifax flights
Redmond to Calgary flights
Portland to St. John's flights
Medford to Vancouver Intl flights
Boise to Victoria flights
Redmond to Halifax flights
Boise to Québec City flights
Boise to Hamilton flights
Portland to Winnipeg flights
Yakima to Vancouver Intl flights
Medford to Pierre Elliott Trudeau Intl flights
Portland to Comox flights
Eugene to Pierre Elliott Trudeau Intl flights
Medford to Pearson Intl flights
Portland to Yellowknife flights
Portland to Whitehorse flights
Eugene to Edmonton flights
Eugene to Ottawa flights
Medford to Hamilton flights
Portland to Regina flights
Portland to Saskatoon flights
Portland to Williams Lake flights
Medford to Ottawa flights
Portland to Kamloops flights
Redmond to Pearson Intl flights
Yakima to Edmonton flights
Portland to Fredericton 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$546FlexibilityNo cancel feeOn-time67%
WestJetCheapest$213Average$369FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$296Average$642FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$317Average$465FlexibilityNo cancel feeOn-time75%
DeltaCheapest$317Average$485FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$348Average$536FlexibilityNo cancel feeOn-time71%
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