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Cheap flights from Ontario to Portland, ME from C$ 304

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 16/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
7 Apr — 14 Apr1
1 adult

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 2 April 2025.

Round-trip from

C$ 405

One-way from

C$ 304

Popular in

February

Cheapest in

September

Average price

C$ 714
American Airlines
  • American Airlines
  • 9/5-25/5
  • 2 total stops
  • 19h 41m total
  • Ontario to Portland
Delta
  • Delta
  • 16/5
  • 1 total stop
  • 18h 11m total
  • Ontario to Portland
Highest demand for flights based on searches. 9% potential increase in price (C$ 89 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease (C$ 26 potential savings vs. average RT price).
Average for round-trip flights in April 2025

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 2 April 2025.

Fri 9/512:35 p.m.YYZ - PWM
1 stop10h 10mAmerican Airlines
Sun 25/57:49 a.m.PWM - YYZ
1 stop9h 31mAmerican Airlines
Deal found 1/4C$ 405
Sat 17/56:15 a.m.YYZ - PWM
1 stop5h 09mDelta
Sat 24/52:30 p.m.PWM - YYZ
1 stop8h 36mDelta
Deal found 1/4C$ 408
Sat 17/512:05 p.m.YYZ - PWM
2 stops11h 54mUnited Airlines
Sat 24/55:40 a.m.PWM - YYZ
1 stop6h 19mUnited Airlines
Deal found 1/4C$ 465
Tue 17/66:15 a.m.YYZ - PWM
1 stop4h 35mWestJet
Thu 19/611:44 a.m.PWM - YYZ
1 stop11h 37mWestJet
Deal found 31/3C$ 484
Fri 2/55:00 p.m.YUL - PWM
1 stop17h 59mDelta
Sun 4/54:40 p.m.PWM - YUL
1 stop17h 49mDelta
Deal found 1/4C$ 636
Thu 12/61:00 p.m.YUL - PWM
1 stop10h 28mMultiple Airlines
Thu 19/66:10 a.m.PWM - YUL
1 stop6h 59mMultiple Airlines
Deal found 1/4C$ 661
Thu 1/510:39 a.m.YUL - PWM
2 stops13h 15mAmerican Airlines
Thu 8/52:05 p.m.PWM - YUL
2 stops19h 45mAmerican Airlines
Deal found 1/4C$ 672
Fri 16/56:00 a.m.YUL - PWM
1 stop10h 03mWestJet
Fri 23/55:00 p.m.PWM - YUL
1 stop6h 16mWestJet
Deal found 1/4C$ 803
Fri 18/47:00 p.m.YUL - PWM
1 stop4h 27mUnited Airlines
Sat 19/46:15 a.m.PWM - YUL
1 stop5h 48mUnited Airlines
Deal found 1/4C$ 851
Fri 9/511:15 p.m.YYZ - PWM
2 stops12h 09mMultiple Airlines
Sun 25/53:30 p.m.PWM - YYZ
2 stops31h 14mMultiple Airlines
Deal found 30/3C$ 854

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 2 April 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 9/5

12:35 p.m.-10:45 p.m.

1 stop10h 10m

Portland

Sun 25/5

7:49 a.m.-5:20 p.m.

1 stop9h 31m

C$ 405

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 17/5

6:15 a.m.-11:24 a.m.

1 stop5h 09m

Portland

Sat 24/5

2:30 p.m.-11:06 p.m.

1 stop8h 36m

C$ 408

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 17/5

12:05 p.m.-11:59 p.m.

2 stops11h 54m

Portland

Sat 24/5

5:40 a.m.-11:59 a.m.

1 stop6h 19m

C$ 465

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 17/6

6:15 a.m.-10:50 a.m.

1 stop4h 35m

Portland

Thu 19/6

11:44 a.m.-11:21 p.m.

1 stop11h 37m

C$ 484

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Fri 2/5

5:00 p.m.-10:59 a.m.

1 stop17h 59m

Portland

Sun 4/5

4:40 p.m.-10:29 a.m.

1 stop17h 49m

C$ 636

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 12/6

1:00 p.m.-11:28 p.m.

1 stop10h 28m

Portland

Thu 19/6

6:10 a.m.-1:09 p.m.

1 stop6h 59m

C$ 661

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 1/5

10:39 a.m.-11:54 p.m.

2 stops13h 15m

Portland

Thu 8/5

2:05 p.m.-9:50 a.m.

2 stops19h 45m

C$ 672

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Fri 16/5

6:00 a.m.-4:03 p.m.

1 stop10h 03m

Portland

Fri 23/5

5:00 p.m.-11:16 p.m.

1 stop6h 16m

C$ 803

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Fri 18/4

7:00 p.m.-11:27 p.m.

1 stop4h 27m

Portland

Sat 19/4

6:15 a.m.-12:03 p.m.

1 stop5h 48m

C$ 851

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 9/5

11:15 p.m.-11:24 a.m.

2 stops12h 09m

Portland

Sun 25/5

3:30 p.m.-10:44 p.m.

2 stops31h 14m

C$ 854

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 17 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 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 2 April 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 73.0 - 115.0 mm per month. November is typically the wettest month, when rainfall can reach 115.0 mm. August is typically the driest time to visit Portland, Maine when rainfall is around 73.0 mm.

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 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 2 April 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.

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
8.0
Very good

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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?

    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.

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

    The cheapest airlines for a one-way flight from Region of Ontario to Portland, Maine are Delta (C$ 304), WestJet (C$ 366), and Air Canada (C$ 383).

  • 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.

See more FAQs

Travelling to a place near Ontario?

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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Ontario to Portland

Discover the top 3 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 2 April 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 339AverageC$ 692FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 397AverageC$ 527FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 519AverageC$ 690FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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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?

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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.

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