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$212+ Cheap flights from Portland, ME (PWM) 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 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — YYZ
Jul 21 — Jul 281
Tue 7/21
Tue 7/28
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 June 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:31 pm
PWM
-
YYZ
1 stop23h 09m
Multiple Airlines
Thu 11/195:15 pm
YYZ
-
PWM
1 stop15h 53m
Multiple Airlines
Deal found 6/17$438
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:35 pm
PWM
-
YYZ
1 stop8h 16m
Delta
Mon 11/166:00 am
YYZ
-
PWM
1 stop7h 53m
Delta
Deal found 6/17$452
This Delta deal was found by Cheapflights users on 6/16. 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.
Thu 10/296:00 am
PWM
-
YYZ
1 stop7h 39m
Delta
Sat 11/712:10 pm
YYZ
-
PWM
1 stop11h 39m
Delta
Deal found 6/16$463
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/102:35 pm
PWM
-
YYZ
1 stop8h 16m
Delta
Thu 11/1912:05 pm
YYZ
-
PWM
1 stop7h 24m
Delta
Deal found 6/17$470
This Delta deal was found by Cheapflights users on 6/16. 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.
Mon 11/25:59 pm
PWM
-
YYZ
1 stop15h 32m
Delta
Sat 11/712:10 pm
YYZ
-
PWM
1 stop11h 39m
Delta
Deal found 6/16$481
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:16 pm
PWM
-
YYZ
1 stop4h 38m
United Airlines
Wed 7/227:43 pm
YYZ
-
PWM
1 stop4h 08m
United Airlines
Deal found 6/17$485
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:25 am
PWM
-
YYZ
1 stop9h 03m
Delta
Fri 11/2012:05 pm
YYZ
-
PWM
1 stop11h 01m
Delta
Deal found 6/17$488
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:35 pm
PWM
-
YYZ
1 stop4h 19m
United Airlines
Mon 8/247:43 pm
YYZ
-
PWM
1 stop4h 16m
United Airlines
Deal found 6/16$496
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:00 am
PWM
-
YYZ
1 stop12h 51m
Delta
Thu 11/196:15 am
YYZ
-
PWM
1 stop10h 44m
Delta
Deal found 6/17$500
This Delta deal was found by Cheapflights users on 6/16. 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.
Tue 11/32:35 pm
PWM
-
YYZ
1 stop8h 16m
Delta
Thu 11/56:00 am
YYZ
-
PWM
1 stop7h 53m
Delta
Deal found 6/16$502
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:00 am
PWM
-
YYZ
1 stop15h 13m
Delta
Tue 11/176:00 am
YYZ
-
PWM
1 stop7h 53m
Delta
Deal found 6/17$504
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:30 am
PWM
-
YYZ
1 stop4h 44m
Delta
Tue 11/176:00 am
YYZ
-
PWM
1 stop7h 53m
Delta
Deal found 6/17$510

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 June 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$438
(Kiwi.com)

One-way from

$212
(American Airlines)
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

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 June 21, 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

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 10/31

3:00 pm-10:31 am

1 stop19h 31m

Toronto Pearson Intl

Wed 11/4

6:00 am-1:53 pm

1 stop7h 53m

$463

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Thu 10/29

6:00 am-1:39 pm

1 stop7h 39m

Toronto Pearson Intl

Fri 11/6

2:30 pm-11:49 pm

1 stop9h 19m

$463

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 8/29

6:00 am-1:47 pm

1 stop7h 47m

Toronto Pearson Intl

Tue 9/1

7:30 am-6:29 pm

1 stop10h 59m

$496

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 8/5

6:00 am-1:42 pm

1 stop7h 42m

Toronto Pearson Intl

Wed 8/12

7:00 am-2:34 pm

1 stop7h 34m

$496

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Tue 7/14

6:00 am-11:49 am

1 stop5h 49m

Toronto Pearson Intl

Tue 7/21

7:43 pm-11:51 pm

1 stop4h 08m

$496

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sun 11/8

6:30 am-11:14 am

1 stop4h 44m

Toronto Pearson Intl

Tue 11/17

6:00 am-1:53 pm

1 stop7h 53m

$510
Quickest round-trip

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Fri 7/17

5:15 am-10:04 am

1 stop4h 49m

Toronto Pearson Intl

Fri 7/24

7:43 pm-11:51 pm

1 stop4h 08m

$527

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Fri 8/14

1:30 pm-9:46 am

1 stop20h 16m

Montreal Pierre Elliott Trudeau Intl

Mon 8/17

10:31 am-11:59 pm

2 stops13h 28m

$541

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Fri 7/24

12:51 pm-9:48 am

2 stops20h 57m

Montreal Pierre Elliott Trudeau Intl

Tue 7/28

10:30 am-12:11 pm

2 stops25h 41m

$569

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Thu 7/16

6:00 am-11:49 am

1 stop5h 49m

Toronto Pearson Intl

Fri 7/17

2:00 pm-9:41 pm

1 stop7h 41m

$582

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/19

Showing 1-10 of 36 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 June 21, 2026.
Read reviews from past customers who have flown American Airlines from Portland to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,726 reviews

Food

6.4

Comfort

7.2

Entertainment

6.8

Overall

7.1

Crew

7.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2026

DFW - BDL

They keep changing the gate, delaying the hours and then finally canceled it. No accomodation, no food, nothing!
American Airlines
7.1
Good
11,726 reviews
American Airlines
7.1
Good
11,726 reviews

Food

6.4

Comfort

7.2

Entertainment

6.8

Overall

7.1

Crew

7.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2026

DFW - BDL

They keep changing the gate, delaying the hours and then finally canceled it. No accomodation, no food, nothing!

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?

    For a flight from Portland to Ontario, you will be flying from Portland. Portland (PWM) is just 2.9 mi from the center of the city.

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

    Departing from Portland, Maine to Region of Ontario will take you 7h 47m. The distance from Portland, Maine to Region of Ontario is about 465 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

See more FAQs

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