Find flights
When to book
FAQs

Cheap flights from Ontario to Portland, ME from C$ 330

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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

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 30 October 2025.

Round-trip from

C$ 640

One-way from

C$ 330

Popular in

May

Cheapest in

November

Average price

C$ 817
27/11-4/12
  • 27/11-4/12
  • 3 total stops
  • 40h 23m total
  • Ontario to Portland
Search Deals
Delta
  • Delta
  • 13/12
  • 1 total stop
  • 11h 16m total
  • Ontario to Portland
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 30 October 2025.

Thu 27/117:35 a.m.YYZ - PWM
1 stop9h 25mMultiple Airlines
Thu 4/1211:58 a.m.PWM - YYZ
2 stops30h 58mMultiple Airlines
Deal found 29/10C$ 640
Sat 13/1210:58 a.m.YYZ - PWM
1 stop10h 44mAmerican Airlines
Sat 20/125:20 p.m.PWM - YYZ
1 stop18h 25mAmerican Airlines
Deal found 29/10C$ 697
Fri 7/1112:50 p.m.YYZ - PWM
1 stop21h 46mMultiple Airlines
Sun 9/115:40 p.m.PWM - YYZ
1 stop24h 04mMultiple Airlines
Deal found 27/10C$ 714
Tue 25/116:00 p.m.YYZ - PWM
1 stop5h 54mDelta
Tue 2/124:53 p.m.PWM - YYZ
1 stop6h 18mDelta
Deal found 27/10C$ 747
Mon 8/129:35 a.m.YUL - PWM
1 stop6h 28mDelta
Mon 15/126:00 a.m.PWM - YUL
1 stop7h 47mDelta
Deal found 30/10C$ 748
Sat 13/128:20 p.m.YYZ - PWM
2 stops38h 21mMultiple Airlines
Sat 20/126:18 p.m.PWM - YYZ
1 stop27h 01mMultiple Airlines
Deal found 29/10C$ 750
Sat 6/1210:00 a.m.YYZ - PWM
1 stop4h 19mUnited Airlines
Sat 6/124:25 p.m.PWM - YYZ
1 stop7h 34mUnited Airlines
Deal found 28/10C$ 761
Tue 25/112:15 p.m.YYZ - PWM
2 stops8h 46mUnited Airlines
Tue 2/123:00 p.m.PWM - YYZ
1 stop4h 17mUnited Airlines
Deal found 27/10C$ 821
Mon 8/127:00 a.m.YUL - PWM
1 stop6h 38mUnited Airlines
Mon 15/129:45 a.m.PWM - YUL
2 stops21h 47mUnited Airlines
Deal found 30/10C$ 824
Sat 6/126:50 a.m.YYZ - PWM
1 stop7h 32mMultiple Airlines
Sat 6/127:46 p.m.PWM - YYZ
2 stops16h 54mMultiple Airlines
Deal found 28/10C$ 842
Fri 12/127:30 a.m.YYZ - PWM
1 stop6h 08mUnited Airlines
Fri 19/126:00 a.m.PWM - YYZ
1 stop5h 48mUnited Airlines
Deal found 28/10C$ 846
Mon 8/127:30 a.m.YUL - PWM
2 stops16h 07mAmerican Airlines
Mon 15/125:34 a.m.PWM - YUL
2 stops17h 25mAmerican Airlines
Deal found 30/10C$ 860

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 30 October 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

Thu 27/11

7:35 a.m.-5:00 p.m.

1 stop9h 25m

Portland

Thu 4/12

11:58 a.m.-2:54 p.m.

1 stop26h 56m

C$ 645

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sun 5/4

6:00 a.m.-11:49 p.m.

1 stop17h 49m

Portland

Wed 8/4

11:25 a.m.-5:54 p.m.

1 stop6h 29m

C$ 676

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sun 8/2

10:59 a.m.-11:43 p.m.

1 stop12h 44m

Portland

Sun 15/2

5:10 a.m.-4:34 p.m.

1 stop11h 24m

C$ 686

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 13/12

10:58 a.m.-9:42 p.m.

1 stop10h 44m

Portland

Sat 20/12

5:20 p.m.-11:45 a.m.

1 stop18h 25m

C$ 697

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 25/11

6:00 p.m.-11:54 p.m.

1 stop5h 54m

Portland

Tue 2/12

4:53 p.m.-11:11 p.m.

1 stop6h 18m

C$ 747

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Mon 8/12

9:35 a.m.-4:03 p.m.

1 stop6h 28m

Portland

Mon 15/12

6:00 a.m.-1:47 p.m.

1 stop7h 47m

C$ 748

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 13/12

8:20 p.m.-10:41 a.m.

2 stops38h 21m

Portland

Sat 20/12

6:18 p.m.-9:19 p.m.

1 stop27h 01m

C$ 750

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 6/12

10:00 a.m.-2:19 p.m.

1 stop4h 19m

Portland

Sat 6/12

4:25 p.m.-11:59 p.m.

1 stop7h 34m

C$ 761

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Mon 30/3

9:30 a.m.-2:34 p.m.

1 stop5h 04m

Portland

Wed 1/4

11:50 a.m.-5:51 p.m.

1 stop6h 01m

C$ 774

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Mon 30/3

6:00 a.m.-11:57 a.m.

1 stop5h 57m

Portland

Wed 1/4

4:50 p.m.-11:12 p.m.

1 stop6h 22m

C$ 774

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

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, September is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of C$ 186). Flying from Region of Ontario to Portland, Maine in February is currently the most expensive (average of C$ 318). 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 30 October 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 evening. If you’re flexible enough to do this you can expect to save up to 17% 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 5h 04m. Delta provides one of the quickest options available for as low as C$ 774. The distance between Region of Ontario and Portland, Maine is about 340 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, September is the cheapest month in which you can book a flight from Region of Ontario to Portland, Maine (average of C$ 186). Flying from Region of Ontario to Portland, Maine in February is currently the most expensive (average of C$ 318). 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
Pierre Elliott Trudeau Intl to Boston flights
Toronto Island to Boston flights
Vancouver Intl to Boston flights
Halifax to Boston flights
Ottawa to Boston flights
Abbotsford to Boston flights
Calgary to Boston flights
Hamilton to Boston flights
Québec City to Boston flights
Edmonton to Boston flights
Moncton to Boston flights
Pearson Intl to Portland flights
St. John's to Boston flights
Pearson Intl to Bangor flights
Victoria to Boston flights
Winnipeg to Boston flights
Vancouver Intl to Portland flights
St John to Boston flights
Charlottetown to Boston flights
Vancouver Intl to Bangor flights
London to Boston flights
Pierre Elliott Trudeau Intl to Portland flights
Saskatoon to Boston flights
Halifax to Bangor flights
Thunder Bay to Boston flights
Timmins to Boston flights
Kelowna to Boston flights
Edmonton to Portland flights
Pierre Elliott Trudeau Intl to Bangor flights
Québec City to Bangor flights
Winnipeg to Portland flights
Calgary to Portland flights
Sydney to Boston flights
Regina to Boston flights
Kamloops to Boston 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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 353AverageC$ 629FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 546AverageC$ 645FlexibilityNo 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.