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$123+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
Jul 23 — Jul 301
Wed 7/23
Wed 7/30
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 July 18, 2025.

Round-trip from

$241
(Gotogate)

One-way from

$123
(SmartFares)

Popular in

March

Cheapest in

August

Average price

$386
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. 16% potential increase in price ($84 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 18, 2025.

This Gotogate deal was found by Cheapflights users on 7/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/293:25 pmPDX - YYZ
2 stops12h 15mAir Canada
Fri 9/56:15 amYYZ - PDX
2 stops11h 31mAir Canada
Deal found 7/15$241
This FlightHub deal was found by Cheapflights users on 7/14. 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.
Tue 8/121:45 pmPDX - YYZ
1 stop7h 39mWestJet
Tue 8/198:00 amYYZ - PDX
1 stop8h 04mWestJet
Deal found 7/14$278
This Kiwi.com deal was found by Cheapflights users on 7/14. 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 8/1210:23 amPDX - YYZ
2 stops16h 49mMultiple Airlines
Tue 8/197:00 amYYZ - PDX
1 stop14h 57mMultiple Airlines
Deal found 7/14$292
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Fri 9/129:56 pmPDX - YYZ
2 stops11h 03mAmerican Airlines
Sat 9/133:11 pmYYZ - PDX
1 stop11h 54mAmerican Airlines
Deal found 7/15$295
This Flightnetwork deal was found by Cheapflights users on 7/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/113:25 pmPDX - YUL
2 stops12h 45mAir Canada
Tue 8/195:30 pmYUL - PDX
1 stop8h 31mAir Canada
Deal found 7/16$320
This Priceline deal was found by Cheapflights users on 7/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/121:45 pmPDX - YOW
1 stop7h 56mWestJet
Wed 8/277:50 amYOW - PDX
1 stop8h 14mWestJet
Deal found 7/16$329
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Thu 9/116:27 pmPDX - YYZ
2 stops11h 52mUnited Airlines
Sat 9/137:00 amYYZ - PDX
1 stop14h 31mUnited Airlines
Deal found 7/15$331
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 10/112:15 pmPDX - YUL
1 stop17h 25mUnited Airlines
Sun 10/196:30 pmYUL - PDX
1 stop17h 30mUnited Airlines
Deal found 7/15$336
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1112:45 amPDX - YYZ
1 stop7h 52mDelta
Sat 9/1312:14 pmYYZ - PDX
1 stop10h 26mDelta
Deal found 7/15$341
This Air Canada deal was found by Cheapflights users on 7/17. 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.
Sat 8/27:40 pmPDX - YTZ
2 stops12h 51mAir Canada
Thu 8/74:10 pmYTZ - PDX
2 stops9h 51mAir Canada
Deal found 7/17$341
This Flightnetwork deal was found by Cheapflights users on 7/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:40 pmPDX - YOW
1 stop9h 39mAir Canada
Sat 9/64:05 pmYOW - PDX
2 stops9h 56mAir Canada
Deal found 7/16$355
This American Airlines deal was found by Cheapflights users on 7/17. 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 8/1111:59 pmPDX - YUL
1 stop10h 45mAmerican Airlines
Tue 8/125:29 pmYUL - PDX
1 stop8h 35mAmerican Airlines
Deal found 7/17$358

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 July 18, 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

Fri 8/29

3:25 pm-6:40 am

2 stops12h 15m

Toronto Pearson Intl

Fri 9/5

6:15 am-2:46 pm

2 stops11h 31m

$241

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 8/12

1:45 pm-12:24 am

1 stop7h 39m

Toronto Pearson Intl

Tue 8/19

8:00 am-1:04 pm

1 stop8h 04m

$278

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 8/12

10:23 am-6:12 am

2 stops16h 49m

Toronto Pearson Intl

Tue 8/19

7:00 am-6:57 pm

1 stop14h 57m

$292

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 9/12

9:56 pm-11:59 am

2 stops11h 03m

Toronto Pearson Intl

Sat 9/13

3:11 pm-12:05 am

1 stop11h 54m

$295

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 8/11

3:25 pm-7:10 am

2 stops12h 45m

Montreal Pierre Elliott Trudeau Intl

Tue 8/19

5:30 pm-11:01 pm

1 stop8h 31m

$320

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Tue 8/12

1:45 pm-12:41 am

1 stop7h 56m

Ottawa

Wed 8/27

7:50 am-1:04 pm

1 stop8h 14m

$329

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 9/11

6:27 pm-9:19 am

2 stops11h 52m

Toronto Pearson Intl

Sat 9/13

7:00 am-6:31 pm

1 stop14h 31m

$331

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sat 10/11

2:15 pm-10:40 am

1 stop17h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 10/19

6:30 pm-9:00 am

1 stop17h 30m

$336

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 9/11

12:45 am-11:37 am

1 stop7h 52m

Toronto Pearson Intl

Sat 9/13

12:14 pm-7:40 pm

1 stop10h 26m

$341

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Sat 8/2

7:40 pm-11:31 am

2 stops12h 51m

Toronto Island

Tue 8/12

4:10 pm-11:01 pm

2 stops9h 51m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 35 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 $350). 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 July 18, 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 July 18, 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

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,959 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,864 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
WestJet
7.2
Good
2,948 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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?

    $123 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 United Airlines, with prices starting from $134 and $147, 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 $350). 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 Calgary flights
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Portland to Pearson Intl flights
Portland to Pierre Elliott Trudeau Intl flights
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Portland to Toronto Island flights
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Boise to Pearson Intl flights
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Medford to Pearson Intl flights
Portland to Regina flights
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Portland to St. John's flights
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Medford to Pierre Elliott Trudeau Intl flights
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Yakima to Vancouver Intl flights
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Portland to Saskatoon flights
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Portland to Fredericton flights
Portland to Yellowknife flights
Redmond to Halifax flights
Medford to Hamilton flights
Eugene to Pierre Elliott Trudeau Intl flights
Eugene to Ottawa flights
Eugene to Edmonton 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 July 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$152Average$591FlexibilityNo cancel feeOn-time67%
WestJetCheapest$214Average$390FlexibilityNo cancel feeOn-time60%
DeltaCheapest$229Average$442FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$296Average$556FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$298Average$427FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$352Average$461FlexibilityNo cancel feeOn-time75%

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