Find flights
When to book
FAQs

Cheap flights from Ontario to Portland, ME from C$ 362

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
5 Mar — 12 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Portland

Enter your travel dates to find the best prices.

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 3 February 2026.

Fri 18/97:45 p.m.
YUL
-
PWM
1 stop15h 16m
Delta
Mon 21/95:59 p.m.
PWM
-
YUL
1 stop14h 44m
Delta
Deal found 1/2C$ 615
Tue 10/32:26 p.m.
YYZ
-
PWM
1 stop8h 46m
Delta
Mon 16/35:48 p.m.
PWM
-
YYZ
2 stops17h 35m
Delta
Deal found 2/2C$ 619
Mon 2/36:45 p.m.
YYZ
-
PWM
1 stop4h 35m
Delta
Mon 9/36:03 a.m.
PWM
-
YYZ
1 stop7h 33m
Delta
Deal found 2/2C$ 649
Fri 20/25:10 p.m.
YYZ
-
PWM
1 stop6h 10m
Delta
Mon 23/25:59 p.m.
PWM
-
YYZ
1 stop4h 52m
Delta
Deal found 2/2C$ 680
Wed 18/26:00 a.m.
YUL
-
PWM
1 stop6h 00m
Delta
Sun 22/26:00 a.m.
PWM
-
YUL
1 stop12h 35m
Delta
Deal found 1/2C$ 684
Mon 2/36:15 p.m.
YYZ
-
PWM
1 stop4h 44m
American Airlines
Mon 9/36:00 a.m.
PWM
-
YYZ
1 stop5h 55m
American Airlines
Deal found 2/2C$ 692
Wed 4/37:30 a.m.
YUL
-
PWM
2 stops16h 20m
American Airlines
Wed 11/36:00 a.m.
PWM
-
YUL
2 stops16h 56m
American Airlines
Deal found 2/2C$ 706
Mon 2/36:10 a.m.
YYZ
-
PWM
1 stop5h 50m
WestJet
Mon 9/36:03 a.m.
PWM
-
YYZ
2 stops24h 10m
WestJet
Deal found 2/2C$ 742
Fri 18/97:45 p.m.
YUL
-
PWM
1 stop15h 16m
WestJet
Mon 21/912:50 p.m.
PWM
-
YUL
2 stops29h 35m
WestJet
Deal found 1/2C$ 748
Thu 21/52:20 p.m.
YUL
-
PWM
1 stop4h 57m
United Airlines
Sat 23/56:00 a.m.
PWM
-
YUL
1 stop7h 10m
United Airlines
Deal found 1/2C$ 752
Mon 2/32:15 p.m.
YYZ
-
PWM
2 stops9h 05m
United Airlines
Mon 9/33:44 p.m.
PWM
-
YYZ
1 stop5h 40m
United Airlines
Deal found 2/2C$ 754
Wed 18/23:35 p.m.
YUL
-
PWM
2 stops7h 45m
Air Canada
Sun 22/26:00 a.m.
PWM
-
YUL
2 stops13h 14m
Air Canada
Deal found 2/2C$ 769

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 3 February 2026.

Round-trip from

C$ 619

One-way from

C$ 362

Popular in

May

Cheapest in

March

Average price

C$ 688
Delta
  • Delta
  • 10/3-16/3
  • 3 total stops
  • 26h 21m total
  • Ontario to Portland
Search Deals
Delta
  • Delta
  • 18/3
  • 1 total stop
  • 13h 52m total
  • Ontario to Portland
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 629,999 searches. Data last updated 3 February 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 10/3

2:26 p.m.-11:12 p.m.

1 stop8h 46m

Portland

Mon 16/3

5:48 p.m.-11:23 a.m.

2 stops17h 35m

C$ 619

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 19/3

6:40 p.m.-10:51 p.m.

1 stop4h 11m

Portland

Thu 26/3

6:00 a.m.-11:48 a.m.

1 stop5h 48m

C$ 680

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 20/2

5:10 p.m.-11:20 p.m.

1 stop6h 10m

Portland

Mon 23/2

5:59 p.m.-10:51 p.m.

1 stop4h 52m

C$ 680

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

12:52 p.m.-12:18 a.m.

2 stops11h 26m

Portland

Sun 22/2

6:00 a.m.-1:36 p.m.

1 stop7h 36m

C$ 684

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 19/3

7:30 a.m.-11:55 p.m.

2 stops16h 25m

Portland

Thu 26/3

6:00 a.m.-10:56 p.m.

2 stops16h 56m

C$ 706

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

7:30 a.m.-11:50 p.m.

2 stops16h 20m

Portland

Wed 11/3

6:00 a.m.-10:56 p.m.

2 stops16h 56m

C$ 706

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

6:00 a.m.-3:14 p.m.

1 stop9h 14m

Portland

Wed 11/3

9:40 a.m.-3:16 p.m.

1 stop5h 36m

C$ 731

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 19/3

6:00 a.m.-3:14 p.m.

1 stop9h 14m

Portland

Thu 26/3

2:32 p.m.-7:48 p.m.

1 stop5h 16m

C$ 731

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 2/3

6:10 a.m.-12:00 p.m.

1 stop5h 50m

Portland

Mon 9/3

6:03 a.m.-6:13 a.m.

2 stops24h 10m

C$ 742

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 21/5

2:20 p.m.-7:17 p.m.

1 stop4h 57m

Portland

Sat 23/5

6:00 a.m.-1:10 p.m.

1 stop7h 10m

C$ 752

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/2

Showing 1-10 of 24 results
1
2
3

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 C$ 242). Flying from Region of Ontario to Portland, Maine in June is currently the most expensive (average of C$ 283). 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?

    For a flight from Ontario to Portland, you will be flying into Portland. Portland (PWM) is just 4.7 km from the centre of the city.

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

    A quick flight from Region of Ontario to Portland, Maine can take about 4h 11m. Delta provides one of the quickest options available for as low as C$ 680. The distance between Region of Ontario and Portland, Maine is about 748 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 C$ 242). Flying from Region of Ontario to Portland, Maine in June is currently the most expensive (average of C$ 283). 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

Travelling to a place near Portland?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Boston flights
Toronto Island to Boston flights
Pierre Elliott Trudeau Intl to Boston flights
Vancouver Intl to Boston flights
Halifax to Boston flights
Calgary to Boston flights
Ottawa to Boston flights
Abbotsford to Boston flights
Hamilton to Boston flights
Edmonton to Boston flights
Vancouver Intl to Portland flights
Winnipeg to Boston flights
Québec City to Boston flights
Saskatoon to Boston flights
Pearson Intl to Portland flights
Charlottetown to Boston flights
Pierre Elliott Trudeau Intl to Portland flights
Moncton to Boston flights
Kelowna to Boston flights
Regina to Boston flights
Victoria to Boston flights
Sydney to Boston flights
Kamloops to Boston flights
Vancouver Intl to Bangor flights
Pierre Elliott Trudeau Intl to Bangor flights
Halifax to Bangor flights
Pearson Intl to Bangor flights
London to Boston flights
St John to Boston flights
Thunder Bay to Boston flights
St. John's to Boston flights
Québec City to Bangor flights
Calgary to Portland flights
Timmins to Boston flights
Edmonton to Portland flights
Winnipeg to Portland flights
Pearson Intl to Bar Harbor flights
Pearson Intl to Augusta flights

Top 2 airlines flying from Ontario to Portland

Discover the top 2 airlines that operate flights from Ontario to Portland. 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 629,999 searches. Data last updated 3 February 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 376AverageC$ 651FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 489AverageC$ 698FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Portland?

When you search for this flight from Ontario to Portland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Portland?

Cheapflights simply makes it quick and affordable to book flights from Ontario to Portland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to Portland with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to Portland with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Portland become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.