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Portland

$202+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$345
(Delta)

One-way from

$202
(Delta)

Popular in

May

Cheapest in

September

Average price

$459
From Ontario to Portland
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One-way flight from Ontario to Portland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($103 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 July 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 July 30, 2025.

This Delta deal was found by Cheapflights users on 7/29. 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.
Mon 10/136:45 pmYYZ - PWM
1 stop16h 04mDelta
Tue 10/216:50 amPWM - YYZ
2 stops10h 29mDelta
Deal found 7/29$345
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/1211:00 amYYZ - PWM
1 stop30h 38mMultiple Airlines
Fri 9/199:46 amPWM - YYZ
1 stop12h 54mMultiple Airlines
Deal found 7/28$363
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 9/610:34 amYUL - PWM
1 stop25h 57mAmerican Airlines
Sat 9/138:40 amPWM - YUL
1 stop25h 06mAmerican Airlines
Deal found 7/29$385
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 9/137:15 amYYZ - PWM
1 stop9h 35mAmerican Airlines
Sat 9/206:00 amPWM - YYZ
1 stop10h 33mAmerican Airlines
Deal found 7/30$440
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/137:00 amYYZ - PWM
1 stop7h 26mUnited Airlines
Sat 9/206:23 pmPWM - YYZ
1 stop5h 35mUnited Airlines
Deal found 7/30$518
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/26:33 amYOW - PWM
1 stop7h 53mUnited Airlines
Sun 9/77:30 amPWM - YOW
1 stop4h 15mUnited Airlines
Deal found 7/30$533
This FlightHub deal was found by Cheapflights users on 7/28. 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.
Mon 9/810:10 amYYZ - PWM
1 stop25h 58mWestJet
Thu 9/1111:34 amPWM - YYZ
2 stops19h 18mWestJet
Deal found 7/28$568
This FlightHub deal was found by Cheapflights users on 7/30. 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.
Thu 8/144:55 pmYUL - PWM
1 stop19h 13mWestJet
Fri 8/154:50 pmPWM - YUL
1 stop27h 14mWestJet
Deal found 7/30$655
This Air Canada deal was found by Cheapflights users on 7/30. 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 9/117:30 amYYZ - PWM
1 stop5h 52mAir Canada
Sun 9/147:30 amPWM - YYZ
2 stops10h 28mAir Canada
Deal found 7/30$673
This Delta deal was found by Cheapflights users on 7/29. 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.
Wed 8/66:00 amYUL - PWM
1 stop7h 20mDelta
Wed 8/136:00 amPWM - YUL
1 stop4h 07mDelta
Deal found 7/29$681
This Air Canada deal was found by Cheapflights users on 7/30. 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 8/142:48 pmYOW - PWM
1 stop8h 26mMultiple Airlines
Fri 8/157:28 amPWM - YOW
1 stop14h 37mMultiple Airlines
Deal found 7/30$682
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 8/62:20 pmYUL - PWM
1 stop9h 39mUnited Airlines
Wed 8/137:28 amPWM - YUL
2 stops10h 57mUnited Airlines
Deal found 7/29$682

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 July 30, 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

Mon 10/13

6:45 pm-10:49 am

1 stop16h 04m

Portland

Tue 10/21

6:50 am-5:19 pm

2 stops10h 29m

$345

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 9/12

11:00 am-5:38 pm

1 stop30h 38m

Portland

Fri 9/19

9:46 am-10:40 pm

1 stop12h 54m

$363

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Sat 9/6

10:34 am-12:31 pm

1 stop25h 57m

Portland

Sat 9/13

8:40 am-9:46 am

1 stop25h 06m

$385

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 9/13

7:15 am-4:50 pm

1 stop9h 35m

Portland

Sat 9/20

6:00 am-4:33 pm

1 stop10h 33m

$440

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 9/13

7:00 am-2:26 pm

1 stop7h 26m

Portland

Sat 9/20

6:23 pm-11:58 pm

1 stop5h 35m

$518

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Tue 9/2

6:33 am-2:26 pm

1 stop7h 53m

Portland

Sun 9/7

7:30 am-11:45 am

1 stop4h 15m

$533

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 9/8

10:10 am-12:08 pm

1 stop25h 58m

Portland

Thu 9/11

11:34 am-6:52 am

2 stops19h 18m

$568

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 8/14

4:55 pm-12:08 pm

1 stop19h 13m

Portland

Fri 8/15

4:50 pm-8:04 pm

1 stop27h 14m

$655

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Thu 9/11

7:30 am-1:22 pm

1 stop5h 52m

Portland

Sun 9/14

7:30 am-5:58 pm

2 stops10h 28m

$673

OttawaPortland

YOW - PWM

YOWPWM

Ottawa

Thu 8/14

2:48 pm-11:14 pm

1 stop8h 26m

Portland

Fri 8/15

7:28 am-10:05 pm

1 stop14h 37m

$682

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 22 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, 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 July 30, 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.

How much does it cost to fly round-trip from Region of Ontario to Portland, Maine?

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 July 30, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Ontario to Portland have to say. 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
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
WestJet
7.2
Good
2,975 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Canada
7.1
Good
9,837 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 $202. Users have also found prices from $278 and $289 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 Toronto Pearson Intl - Portland, Montreal Pierre Elliott Trudeau 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 Portland?

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