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Portland

$189+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
Mar 2 — Mar 91
Mon 3/2
Mon 3/9
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 January 31, 2026.

This Delta deal was found by Cheapflights users on 1/29. 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 6/26:00 am
YYZ
-
PWM
1 stop7h 54m
Delta
Fri 6/55:59 pm
PWM
-
YYZ
1 stop15h 30m
Delta
Deal found 1/29$381
This American Airlines deal was found by Cheapflights users on 1/28. 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 2/187:30 am
YUL
-
PWM
2 stops16h 20m
American Airlines
Tue 2/246:00 am
PWM
-
YUL
2 stops16h 56m
American Airlines
Deal found 1/28$454
This Delta deal was found by Cheapflights users on 1/29. 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 2/265:15 pm
YYZ
-
PWM
2 stops18h 03m
Delta
Thu 3/52:35 pm
PWM
-
YYZ
1 stop8h 19m
Delta
Deal found 1/29$463
This Delta deal was found by Cheapflights users on 1/30. 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 3/162:29 pm
YUL
-
PWM
1 stop8h 43m
Delta
Mon 3/2311:45 am
PWM
-
YUL
1 stop6h 50m
Delta
Deal found 1/30$476
This Delta deal was found by Cheapflights users on 1/29. 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 6/16:00 am
YYZ
-
PWM
1 stop17h 59m
Delta
Thu 6/42:35 pm
PWM
-
YYZ
1 stop8h 22m
Delta
Deal found 1/29$478
This Delta deal was found by Cheapflights users on 1/28. 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 2/182:29 pm
YUL
-
PWM
1 stop8h 51m
Delta
Tue 2/246:00 am
PWM
-
YUL
1 stop7h 36m
Delta
Deal found 1/28$510
This United Airlines deal was found by Cheapflights users on 1/30. 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 5/216:30 pm
YUL
-
PWM
1 stop5h 20m
United Airlines
Sat 5/236:00 am
PWM
-
YUL
1 stop15h 34m
United Airlines
Deal found 1/30$524
This FlightHub deal was found by Cheapflights users on 1/29. 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.
Mon 6/112:15 pm
YYZ
-
PWM
1 stop23h 40m
WestJet
Thu 6/412:50 pm
PWM
-
YYZ
1 stop20h 05m
WestJet
Deal found 1/29$528
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 3/177:30 pm
YUL
-
PWM
1 stop15h 34m
WestJet
Tue 3/244:48 pm
PWM
-
YUL
1 stop19h 11m
WestJet
Deal found 1/31$543
This FlightHub deal was found by Cheapflights users on 1/29. 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.
Fri 8/2112:45 pm
YUL
-
PWM
1 stop23h 10m
WestJet
Fri 8/2811:38 am
PWM
-
YUL
1 stop11h 56m
WestJet
Deal found 1/29$548
This WestJet deal was found by Cheapflights users on 1/30. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1610:19 am
YYZ
-
PWM
1 stop12h 53m
WestJet
Mon 3/234:48 pm
PWM
-
YYZ
1 stop16h 17m
WestJet
Deal found 1/30$559
This Delta deal was found by Cheapflights users on 1/29. 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 6/126:10 pm
YYZ
-
PWM
1 stop5h 49m
Delta
Tue 6/163:00 pm
PWM
-
YYZ
1 stop5h 30m
Delta
Deal found 1/29$565

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 January 31, 2026.

Round-trip from

$381
(Delta)

One-way from

$189
(United Airlines)

Popular in

May

Cheapest in

March

Average price

$460
From Ontario to Portland
Search Deals
One-way flight from Ontario to Portland
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 31, 2026.
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

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 6/2

6:00 am-1:54 pm

1 stop7h 54m

Portland

Fri 6/5

5:59 pm-9:29 am

1 stop15h 30m

$381

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 2/18

7:30 am-11:50 pm

2 stops16h 20m

Portland

Tue 2/24

6:00 am-10:56 pm

2 stops16h 56m

$454

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 2/26

5:15 pm-11:18 am

2 stops18h 03m

Portland

Thu 3/5

2:35 pm-10:54 pm

1 stop8h 19m

$463

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Mon 3/16

2:29 pm-11:12 pm

1 stop8h 43m

Portland

Mon 3/23

11:45 am-6:35 pm

1 stop6h 50m

$476

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 6/1

6:00 am-11:59 pm

1 stop17h 59m

Portland

Thu 6/4

2:35 pm-10:57 pm

1 stop8h 22m

$478

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 2/18

2:29 pm-11:20 pm

1 stop8h 51m

Portland

Tue 2/24

6:00 am-1:36 pm

1 stop7h 36m

$510

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 5/21

6:30 pm-11:50 pm

1 stop5h 20m

Portland

Sat 5/23

6:00 am-9:34 pm

1 stop15h 34m

$524

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 6/1

12:15 pm-11:55 am

1 stop23h 40m

Portland

Thu 6/4

12:50 pm-8:55 am

1 stop20h 05m

$528

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Tue 3/17

7:30 pm-11:04 am

1 stop15h 34m

Portland

Tue 3/24

4:48 pm-11:59 am

1 stop19h 11m

$543

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 3/16

10:19 am-11:12 pm

1 stop12h 53m

Portland

Mon 3/23

4:48 pm-9:05 am

1 stop16h 17m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 33 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, 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 5h 20m. There are 211 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, 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
Conway

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Portland

See prices for flight routes from nearby airports that may be better suited for you.
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