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Portland

$224+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$349
(Delta)

One-way from

$224
(Delta)

Popular in

May

Cheapest in

August

Average price

$498
From Ontario to Portland
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One-way flight from Ontario to Portland
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Highest demand for flights based on searches. 20% potential increase in price ($108 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. 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 11/46:00 amYYZ - PWM
1 stop7h 52mDelta
Mon 11/105:59 pmPWM - YYZ
1 stop17h 03mDelta
Deal found 6/12$349
This Delta deal was found by Cheapflights users on 6/11. 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 7/156:00 amYUL - PWM
1 stop17h 29mDelta
Wed 7/232:00 pmPWM - YUL
1 stop7h 28mDelta
Deal found 6/11$378
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 9/117:15 amYYZ - PWM
1 stop25h 51mMultiple Airlines
Sun 9/145:33 pmPWM - YYZ
1 stop25h 03mMultiple Airlines
Deal found 6/12$388
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/227:15 amYYZ - PWM
1 stop13h 09mAmerican Airlines
Thu 7/247:00 amPWM - YYZ
1 stop16h 05mAmerican Airlines
Deal found 6/10$449
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/810:30 amYUL - PWM
1 stop9h 54mAmerican Airlines
Tue 7/157:00 amPWM - YUL
1 stop9h 45mAmerican Airlines
Deal found 6/10$457
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/86:05 pmYUL - PWM
2 stops20h 19mUnited Airlines
Tue 7/156:10 amPWM - YUL
2 stops15h 34mUnited Airlines
Deal found 6/10$464
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 7/147:47 pmYYZ - PWM
1 stop4h 12mUnited Airlines
Mon 7/286:20 pmPWM - YYZ
1 stop5h 38mUnited Airlines
Deal found 6/11$468
This Air Canada deal was found by Cheapflights users on 6/10. 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.
Tue 7/86:05 amYOW - PWM
1 stop12h 21mMultiple Airlines
Tue 7/157:28 amPWM - YOW
1 stop14h 37mMultiple Airlines
Deal found 6/10$483
This FlightHub deal was found by Cheapflights users on 6/12. 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 9/128:00 amYYZ - PWM
2 stops28h 54mWestJet
Mon 9/155:59 pmPWM - YYZ
1 stop24h 08mWestJet
Deal found 6/12$514
This United deal was found by Cheapflights users on 6/11. 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.
Wed 8/138:10 amYUL - PWM
1 stop5h 09mMultiple Airlines
Wed 8/133:50 pmPWM - YUL
1 stop6h 16mMultiple Airlines
Deal found 6/11$561
This Air Canada deal was found by Cheapflights users on 6/12. 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 7/32:00 pmYYZ - PWM
2 stops9h 14mAir Canada
Sun 7/66:00 amPWM - YYZ
1 stop7h 47mAir Canada
Deal found 6/12$646
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/267:29 pmYOW - PWM
1 stop4h 30mUnited Airlines
Sat 8/210:51 amPWM - YOW
1 stop5h 52mUnited Airlines
Deal found 6/11$825

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 June 12, 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

Tue 11/4

6:00 am-1:52 pm

1 stop7h 52m

Portland

Mon 11/10

5:59 pm-11:02 am

1 stop17h 03m

$349

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Tue 7/15

6:00 am-11:29 pm

1 stop17h 29m

Portland

Wed 7/23

2:00 pm-9:28 pm

1 stop7h 28m

$378

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 9/11

7:15 am-9:06 am

1 stop25h 51m

Portland

Sun 9/14

5:33 pm-6:36 pm

1 stop25h 03m

$388

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 7/22

7:15 am-8:24 pm

1 stop13h 09m

Portland

Thu 7/24

7:00 am-11:05 pm

1 stop16h 05m

$449

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Tue 7/8

10:30 am-8:24 pm

1 stop9h 54m

Portland

Tue 7/15

7:00 am-4:45 pm

1 stop9h 45m

$457

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Tue 7/8

6:05 pm-2:24 pm

2 stops20h 19m

Portland

Tue 7/15

6:10 am-9:44 pm

2 stops15h 34m

$464

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 7/14

7:47 pm-11:59 pm

1 stop4h 12m

Portland

Mon 7/28

6:20 pm-11:58 pm

1 stop5h 38m

$468

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 7/8

6:05 am-6:26 pm

1 stop12h 21m

Portland

Tue 7/15

7:28 am-10:05 pm

1 stop14h 37m

$483

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 9/12

8:00 am-12:54 pm

2 stops28h 54m

Portland

Mon 9/15

5:59 pm-6:07 pm

1 stop24h 08m

$514

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Wed 8/13

8:10 am-1:19 pm

1 stop5h 09m

Portland

Wed 8/13

3:50 pm-10:06 pm

1 stop6h 16m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 26 results
1
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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, 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 July is currently the most expensive (average of $394). 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 June 12, 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 June 12, 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
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $224. Users have also found prices from $247 and $255 on United Airlines and American 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 Montreal Pierre Elliott Trudeau Intl - Portland, Toronto Pearson 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, 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 July is currently the most expensive (average of $394). 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.
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