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Portland

$212+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Round-trip from

$282
(American Airlines)

One-way from

$212
(Delta)

Popular in

February

Cheapest in

September

Average price

$497
From Ontario to Portland
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One-way flight from Ontario to Portland
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 2025.

This American Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 5/912:35 pmYYZ - PWM
1 stop10h 10mAmerican Airlines
Sun 5/257:49 amPWM - YYZ
1 stop9h 31mAmerican Airlines
Deal found 4/1$282
This Delta deal was found by Cheapflights users on 4/1. 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.
Sat 5/176:15 amYYZ - PWM
1 stop5h 09mDelta
Sat 5/242:30 pmPWM - YYZ
1 stop8h 36mDelta
Deal found 4/1$284
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Sat 5/1712:05 pmYYZ - PWM
2 stops11h 54mUnited Airlines
Sat 5/245:40 amPWM - YYZ
1 stop6h 19mUnited Airlines
Deal found 4/1$324
This FlightHub deal was found by Cheapflights users on 4/1. 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.
Tue 7/226:00 amYYZ - PWM
1 stop6h 01mWestJet
Thu 7/2411:59 amPWM - YYZ
1 stop6h 28mWestJet
Deal found 4/1$420
This Delta deal was found by Cheapflights users on 4/1. 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 5/25:00 pmYUL - PWM
1 stop17h 59mDelta
Sun 5/44:40 pmPWM - YUL
1 stop17h 49mDelta
Deal found 4/1$443
This Air Canada deal was found by Cheapflights users on 4/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/121:00 pmYUL - PWM
1 stop10h 28mMultiple Airlines
Thu 6/196:10 amPWM - YUL
1 stop6h 59mMultiple Airlines
Deal found 4/1$460
This American Airlines deal was found by Cheapflights users on 4/1. 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 5/110:39 amYUL - PWM
2 stops13h 15mAmerican Airlines
Thu 5/82:05 pmPWM - YUL
2 stops19h 45mAmerican Airlines
Deal found 4/1$468
This United deal was found by Cheapflights users on 4/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1010:37 amYOW - PWM
1 stop11h 19mMultiple Airlines
Tue 6/176:10 amPWM - YOW
1 stop15h 55mMultiple Airlines
Deal found 4/1$529
This Kiwi.com deal was found by Cheapflights users on 4/1. 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.
Fri 5/166:00 amYUL - PWM
1 stop10h 03mWestJet
Fri 5/235:00 pmPWM - YUL
1 stop6h 16mWestJet
Deal found 4/1$559
This EaseMyTrip deal was found by Cheapflights users on 4/1. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:15 pmYOW - PWM
1 stop5h 12mAir Canada
Tue 5/133:43 pmPWM - YOW
1 stop6h 22mAir Canada
Deal found 4/1$568
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Tue 6/105:15 amYOW - PWM
2 stops9h 38mUnited Airlines
Tue 6/1712:15 pmPWM - YOW
2 stops8h 54mUnited Airlines
Deal found 4/1$585
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 4/187:00 pmYUL - PWM
1 stop4h 27mUnited Airlines
Sat 4/196:15 amPWM - YUL
1 stop5h 48mUnited Airlines
Deal found 4/1$593

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 April 2, 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

Fri 5/9

12:35 pm-10:45 pm

1 stop10h 10m

Portland

Sun 5/25

7:49 am-5:20 pm

1 stop9h 31m

$282

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 5/17

6:15 am-11:24 am

1 stop5h 09m

Portland

Sat 5/24

2:30 pm-11:06 pm

1 stop8h 36m

$284

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 5/17

12:05 pm-11:59 pm

2 stops11h 54m

Portland

Sat 5/24

5:40 am-11:59 am

1 stop6h 19m

$324

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Fri 5/2

5:00 pm-10:59 am

1 stop17h 59m

Portland

Sun 5/4

4:40 pm-10:29 am

1 stop17h 49m

$443

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 6/12

1:00 pm-11:28 pm

1 stop10h 28m

Portland

Thu 6/19

6:10 am-1:09 pm

1 stop6h 59m

$460

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 5/1

10:39 am-11:54 pm

2 stops13h 15m

Portland

Thu 5/8

2:05 pm-9:50 am

2 stops19h 45m

$468

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 6/10

10:37 am-9:56 pm

1 stop11h 19m

Portland

Tue 6/17

6:10 am-10:05 pm

1 stop15h 55m

$529

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Fri 5/16

6:00 am-4:03 pm

1 stop10h 03m

Portland

Fri 5/23

5:00 pm-11:16 pm

1 stop6h 16m

$559

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Fri 5/9

6:15 pm-11:27 pm

1 stop5h 12m

Portland

Tue 5/13

3:43 pm-10:05 pm

1 stop6h 22m

$568

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Thu 7/3

5:50 pm-11:14 pm

1 stop5h 24m

Portland

Sun 7/6

5:35 am-1:10 pm

2 stops7h 35m

$579

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 17 results
1
2

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 May is currently the most expensive (average of $416). 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 April 2, 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.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated April 2, 2025.
To help decide which airline to fly from Ontario to Portland, see what other customers have to say about Delta, United Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,615 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,789 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
9,022 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines to fly from Region of Ontario to Portland, Maine one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $212. Users have also found prices from $267 and $361 on Air Canada and United Airlines, respectively.

  • 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, Ottawa - Portland and Montreal Pierre Elliott Trudeau Intl - 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 May is currently the most expensive (average of $416). 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
North Conway
Bath
Brunswick
Auburn
Conway
Lewiston

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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.
Pearson Intl to Boston flights
Toronto Island to Boston flights
Pierre Elliott Trudeau Intl to Boston flights
Vancouver Intl to Boston flights
Ottawa to Boston flights
Halifax to Boston flights
Calgary to Boston flights
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Québec City to Boston flights
Pearson Intl to Portland flights
St. John's to Boston flights
London to Boston flights
Vancouver Intl to Portland flights
Winnipeg to Boston flights
Hamilton to Boston flights
Pearson Intl to Bangor flights
Moncton to Boston flights
St John to Boston flights
Pierre Elliott Trudeau Intl to Portland flights
Victoria to Boston flights
Ottawa to Portland flights
Saskatoon to Boston flights
Kamloops to Boston flights
Pierre Elliott Trudeau Intl to Bangor flights
Calgary to Portland flights
Thunder Bay to Boston flights
Regina to Boston flights
Halifax to Portland flights
Edmonton to Portland flights
Timmins to Boston flights
Québec City to Bangor 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 2,558,603 searches. Data last updated April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$243Average$482FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$395Average$617FlexibilityNo cancel feeOn-time69%

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