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Portland

$208+ Cheap flights from Ontario to Portland, ME (PWM)

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
Apr 17 — Apr 241
Fri 4/17
Fri 4/24
1 adult, Economy
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Cheap flight deals from Ontario to Portland

Cheapest flights from Ontario to Portland
Explore the most affordable flight options available from Ontario to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.

This United Airlines deal was found by Cheapflights users on 3/15. 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.
Tue 6/22:52 pm
YOW
-
PWM
1 stop8h 59m
United Airlines
Sat 6/67:16 pm
PWM
-
YOW
1 stop4h 38m
United Airlines
Deal found 3/15$357
This Delta deal was found by Cheapflights users on 3/16. 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 4/206:00 am
YYZ
-
PWM
1 stop18h 46m
Delta
Sat 4/252:51 pm
PWM
-
YYZ
1 stop8h 16m
Delta
Deal found 3/16$363
This American Airlines deal was found by Cheapflights users on 3/13. 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.
Sat 4/187:15 am
YYZ
-
PWM
1 stop7h 52m
American Airlines
Sat 4/253:40 pm
PWM
-
YYZ
1 stop18h 39m
American Airlines
Deal found 3/13$381
This United Airlines deal was found by Cheapflights users on 3/15. 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 4/16:00 am
YOW
-
PWM
1 stop4h 22m
United Airlines
Wed 4/153:22 pm
PWM
-
YOW
1 stop6h 43m
United Airlines
Deal found 3/15$388
This Delta deal was found by Cheapflights users on 3/16. 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 4/206:00 am
YYZ
-
PWM
1 stop18h 46m
Delta
Mon 4/272:51 pm
PWM
-
YYZ
1 stop20h 35m
Delta
Deal found 3/16$402
This American Airlines deal was found by Cheapflights users on 3/15. 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.
Wed 4/297:15 am
YYZ
-
PWM
1 stop7h 54m
American Airlines
Wed 5/610:24 am
PWM
-
YYZ
1 stop8h 21m
American Airlines
Deal found 3/15$406
This Air Canada deal was found by Cheapflights users on 3/15. 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 6/29:05 am
YOW
-
PWM
2 stops9h 20m
Air Canada
Sat 6/610:55 am
PWM
-
YOW
1 stop5h 43m
Air Canada
Deal found 3/15$406
This American Airlines deal was found by Cheapflights users on 3/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:15 am
YYZ
-
PWM
1 stop7h 54m
American Airlines
Mon 4/273:39 pm
PWM
-
YYZ
1 stop7h 32m
American Airlines
Deal found 3/16$408
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Tue 4/146:25 am
YOW
-
PWM
1 stop15h 15m
United Airlines
Tue 4/216:04 am
PWM
-
YOW
2 stops9h 17m
United Airlines
Deal found 3/15$419
This Delta deal was found by Cheapflights users on 3/17. 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 3/3112:14 pm
YYZ
-
PWM
1 stop11h 45m
Delta
Sat 4/44:48 pm
PWM
-
YYZ
1 stop5h 51m
Delta
Deal found 3/17$428
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Tue 3/318:50 am
YYZ
-
PWM
1 stop12h 50m
United Airlines
Sat 4/46:00 am
PWM
-
YYZ
1 stop5h 43m
United Airlines
Deal found 3/15$447
This American Airlines deal was found by Cheapflights users on 3/17. 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.
Fri 4/35:22 pm
YYZ
-
PWM
1 stop6h 33m
American Airlines
Mon 4/67:00 am
PWM
-
YYZ
1 stop15h 55m
American Airlines
Deal found 3/17$454

Find flight deals from Ontario to Portland

Keep the following information in mind while searching for Ontario to Portland flight deals. Data was last updated March 18, 2026.

Round-trip from

$344
(United Airlines)

One-way from

$208
(United Airlines)

Popular in

May

Cheapest in

June

Average price

$432
From Ontario to Portland
Search Deals
One-way flight from Ontario to Portland
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Portland 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 18, 2026.
Use the filters below to find and compare flights from Ontario to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 4/14

6:25 am-9:40 pm

1 stop15h 15m

Portland

Tue 4/21

3:22 pm-10:05 pm

1 stop6h 43m

$357
Quickest round-trip

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 6/2

7:30 pm-11:51 pm

1 stop4h 21m

Portland

Sat 6/6

7:16 pm-11:54 pm

1 stop4h 38m

$357

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 4/21

12:09 pm-12:46 am

1 stop12h 37m

Portland

Mon 4/27

2:51 pm-11:26 am

1 stop20h 35m

$402

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 6/2

9:05 am-6:25 pm

2 stops9h 20m

Portland

Sat 6/6

10:55 am-4:38 pm

1 stop5h 43m

$406

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 4/21

7:25 pm-9:54 am

1 stop14h 29m

Portland

Mon 4/27

3:39 pm-11:11 pm

1 stop7h 32m

$408

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 3/31

12:14 pm-11:59 pm

1 stop11h 45m

Portland

Sat 4/4

4:48 pm-10:39 pm

1 stop5h 51m

$428

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 4/30

7:43 pm-11:59 pm

1 stop4h 16m

Portland

Thu 5/7

6:00 am-3:46 pm

1 stop9h 46m

$447

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 3/31

8:50 am-3:22 pm

1 stop6h 32m

Portland

Sat 4/4

6:00 am-11:43 am

1 stop5h 43m

$447

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 3/30

2:45 pm-9:40 pm

1 stop6h 55m

Portland

Thu 4/2

6:33 pm-9:54 am

1 stop15h 21m

$448

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 4/3

2:45 pm-9:40 pm

1 stop6h 55m

Portland

Mon 4/6

7:36 pm-10:04 am

1 stop14h 28m

$448

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/15

Showing 1-10 of 39 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Ontario 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 Ontario to Portland

What is the cheapest month to book a flight from Region of Ontario to Portland, Maine?

Currently, March is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of $177). Flying from Region of Ontario to Portland, Maine in June is currently the most expensive (average of $207). 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.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Portland. 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 into for flights to Portland from Ontario?

    Portland (PWM) is the airport you will fly into if you book a flight from Ontario to Portland. It is only a 2.9 mi journey from Portland (PWM) to Portland’s city center.

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

    Departing from Region of Ontario to Portland, Maine will take you 12h 37m. There are 465 mi between Region of Ontario and Portland, Maine. This flight may include one or multiple stops.

  • What are the most popular routes from Region of Ontario to Portland, Maine?

    The most popular flight routes from Region of Ontario to Portland, Maine are Montreal Pierre Elliott Trudeau Intl - Portland, Toronto Pearson Intl - Portland and Ottawa - Portland.

  • Can I find deals for flights from Ontario to Portland that include hotel bookings?

    Yes. In addition to deals on Ontario to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Portland.

  • Can I find deals for business class flights from Ontario to Portland?

    Yes. Cheapflights offers flight deals from Ontario to Portland 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 Region of Ontario to Portland, Maine?

    Currently, March is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of $177). Flying from Region of Ontario to Portland, Maine in June is currently the most expensive (average of $207). 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

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Brunswick
Auburn
Lewiston
Conway

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