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Cheap flights from Ontario to Portland, ME from C$ 262

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 13/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
17 Jan — 24 Jan1
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 18 December 2025.

Thu 25/1212:34 p.m.YYZ - PWM
1 stop5h 37mAmerican Airlines
Sun 28/125:45 a.m.PWM - YYZ
1 stop9h 45mAmerican Airlines
Deal found 17/12C$ 1,186
Thu 25/1212:10 p.m.YYZ - PWM
2 stops6h 41mUnited Airlines
Sun 28/126:00 a.m.PWM - YYZ
1 stop6h 49mUnited Airlines
Deal found 17/12C$ 1,210

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 18 December 2025.

Round-trip from

C$ 528

One-way from

C$ 262

Popular in

December

Cheapest in

March

Average price

C$ 409
American Airlines
  • American Airlines
  • 31/1-7/2
  • 3 total stops
  • 22h 12m total
  • Ontario to Portland
Search Deals
13/1
  • 13/1
  • 1 total stop
  • 27h 07m total
  • Ontario to Portland
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 18 December 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

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 31/1

10:30 a.m.-9:37 p.m.

2 stops11h 07m

Portland

Sat 7/2

5:30 a.m.-5:28 p.m.

2 stops11h 58m

C$ 535

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 30/1

5:15 p.m.-12:06 p.m.

1 stop18h 51m

Portland

Fri 6/2

5:20 a.m.-4:35 p.m.

1 stop11h 15m

C$ 544

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 13/1

12:10 p.m.-11:22 p.m.

2 stops11h 12m

Portland

Tue 20/1

2:35 p.m.-10:56 p.m.

1 stop8h 21m

C$ 564

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 30/1

7:10 a.m.-10:22 a.m.

1 stop27h 12m

Portland

Fri 6/2

11:29 a.m.-11:28 a.m.

2 stops23h 59m

C$ 573

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 26/1

2:25 p.m.-11:22 p.m.

1 stop8h 57m

Portland

Thu 29/1

6:00 a.m.-5:53 p.m.

1 stop11h 53m

C$ 617

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 11/2

12:54 p.m.-12:20 a.m.

2 stops11h 26m

Portland

Tue 10/3

2:30 p.m.-11:57 a.m.

2 stops21h 27m

C$ 620

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

12:52 p.m.-1:43 p.m.

2 stops24h 51m

Portland

Tue 31/3

5:45 p.m.-8:30 a.m.

1 stop14h 45m

C$ 620

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

9:29 a.m.-11:18 a.m.

1 stop25h 49m

Portland

Mon 30/3

6:03 a.m.-8:30 a.m.

1 stop26h 27m

C$ 620

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

12:52 p.m.-1:43 p.m.

2 stops24h 51m

Portland

Sun 29/3

6:03 a.m.-1:37 p.m.

1 stop7h 34m

C$ 620

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

12:52 p.m.-1:43 p.m.

2 stops24h 51m

Portland

Thu 26/3

6:03 a.m.-8:30 a.m.

1 stop26h 27m

C$ 620

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/12

Showing 1-10 of 23 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, December is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of C$ 231). Flying from Region of Ontario to Portland, Maine in February is currently the most expensive (average of C$ 293). 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 18 December 2025.

A simple way to save on the total cost of your ticket is to fly from Region of Ontario to Portland, Maine in the afternoon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the morning.

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 11h 07m. American Airlines provides one of the quickest options available for as low as C$ 535. 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, December is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of C$ 231). Flying from Region of Ontario to Portland, Maine in February is currently the most expensive (average of C$ 293). 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

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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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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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 361AverageC$ 621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 539AverageC$ 672FlexibilityNo 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!

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