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Portland

$185+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Ontario to Portland

Keep the following information in mind while searching for Ontario to Portland flight deals. Data was last updated September 11, 2025.

Round-trip from

$333
(Delta)

One-way from

$185
(Kiwi.com)

Popular in

May

Cheapest in

September

Average price

$287
From Ontario to Portland
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One-way flight from Ontario to Portland
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Highest demand for flights based on searches. 14% potential increase in price ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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 10/16:03 amYYZ - PWM
1 stop18h 31mDelta
Wed 10/85:42 amPWM - YYZ
1 stop12h 12mDelta
Deal found 9/10$333
This Delta deal was found by Cheapflights users on 9/10. 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 10/26:03 amYYZ - PWM
1 stop18h 31mDelta
Wed 10/85:42 amPWM - YYZ
1 stop12h 12mDelta
Deal found 9/10$343
This Delta deal was found by Cheapflights users on 9/10. 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 9/306:03 amYYZ - PWM
1 stop7h 58mDelta
Wed 10/85:42 amPWM - YYZ
1 stop12h 12mDelta
Deal found 9/10$369
This Trip.com deal was found by Cheapflights users on 9/11. 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.
Mon 10/2710:15 amYUL - PWM
2 stops13h 02mMultiple Airlines
Mon 11/36:00 amPWM - YUL
2 stops10h 30mMultiple Airlines
Deal found 9/11$380
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/2510:30 amYUL - PWM
1 stop7h 08mAmerican Airlines
Sat 11/15:46 amPWM - YUL
2 stops17h 09mAmerican Airlines
Deal found 9/10$391
This Delta deal was found by Cheapflights users on 9/10. 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 10/16:03 amYYZ - PWM
1 stop18h 31mDelta
Tue 10/72:38 pmPWM - YYZ
1 stop8h 27mDelta
Deal found 9/10$394
This Delta deal was found by Cheapflights users on 9/10. 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 10/86:00 amYYZ - PWM
1 stop18h 05mDelta
Thu 10/166:50 amPWM - YYZ
1 stop10h 33mDelta
Deal found 9/10$402
This Delta deal was found by Cheapflights users on 9/10. 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 10/36:03 amYYZ - PWM
1 stop18h 31mDelta
Sat 10/112:38 pmPWM - YYZ
1 stop20h 43mDelta
Deal found 9/10$403
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/237:50 amYUL - PWM
2 stops16h 01mAmerican Airlines
Thu 10/301:05 pmPWM - YUL
1 stop20h 45mAmerican Airlines
Deal found 9/10$404
This Delta deal was found by Cheapflights users on 9/10. 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 9/296:03 amYYZ - PWM
1 stop7h 58mDelta
Tue 10/72:38 pmPWM - YYZ
1 stop8h 27mDelta
Deal found 9/10$430
This Delta deal was found by Cheapflights users on 9/10. 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 10/56:15 amYYZ - PWM
1 stop16h 48mDelta
Sun 10/126:50 amPWM - YYZ
1 stop4h 31mDelta
Deal found 9/10$441
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/97:29 amYYZ - PWM
1 stop12h 45mAmerican Airlines
Thu 10/167:00 amPWM - YYZ
1 stop11h 35mAmerican Airlines
Deal found 9/10$451

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 September 11, 2025.
Use the filters below to find and compare flights from Ontario to Portland that are best for you.

Fly from

Ontario

Fly to

Portland

Route

Depart

Return

Price

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Mon 10/27

10:15 am-11:17 pm

2 stops13h 02m

Portland

Mon 11/3

6:00 am-4:30 pm

2 stops10h 30m

$380

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Sat 10/25

10:30 am-5:38 pm

1 stop7h 08m

Portland

Sat 11/1

5:46 am-10:55 pm

2 stops17h 09m

$391

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 10/8

6:00 am-12:05 am

1 stop18h 05m

Portland

Thu 10/16

6:50 am-5:23 pm

1 stop10h 33m

$402

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 10/3

6:03 am-12:34 am

1 stop18h 31m

Portland

Sat 10/11

2:38 pm-11:21 am

1 stop20h 43m

$403

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 10/23

7:50 am-11:51 pm

2 stops16h 01m

Portland

Thu 10/30

1:05 pm-9:50 am

1 stop20h 45m

$404

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 9/30

6:03 am-2:01 pm

1 stop7h 58m

Portland

Tue 10/7

2:38 pm-11:05 pm

1 stop8h 27m

$430

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 9/29

6:03 am-2:01 pm

1 stop7h 58m

Portland

Tue 10/7

2:38 pm-11:05 pm

1 stop8h 27m

$430

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sun 10/12

6:00 am-12:05 am

1 stop18h 05m

Portland

Sat 10/18

6:50 am-5:23 pm

1 stop10h 33m

$430

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 10/8

6:00 am-12:05 am

1 stop18h 05m

Portland

Wed 10/15

6:50 am-11:21 am

1 stop4h 31m

$441

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sun 10/5

6:15 am-11:03 pm

1 stop16h 48m

Portland

Sun 10/12

6:50 am-11:21 am

1 stop4h 31m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 41 results
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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, January is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of $296). Flying from Region of Ontario to Portland, Maine in July is currently the most expensive (average of $394). 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 ON to PWM?

Find hourly flight availability from Ontario to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Portland, Maine as you normally would.

How much does it cost to fly round-trip from Region of Ontario to Portland, Maine?

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 4h 14m. There are 288 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 Toronto Pearson Intl - Portland, Montreal Pierre Elliott Trudeau 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, January is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of $296). Flying from Region of Ontario to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway
Lewiston

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