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Cheap flights from Ontario to Portland, ME from C$ 301

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
21 Jul — 28 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap 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 21 June 2026.

Mon 20/77:43 p.m.
YYZ
-
PWM
1 stop4h 08m
United Airlines
Mon 27/75:15 a.m.
PWM
-
YYZ
1 stop4h 49m
United Airlines
Deal found 20/6C$ 555
Sat 4/78:45 a.m.
YYZ
-
PWM
1 stop5h 46m
United Airlines
Fri 10/76:00 a.m.
PWM
-
YYZ
1 stop13h 37m
United Airlines
Deal found 18/6C$ 559
Thu 2/72:45 p.m.
YYZ
-
PWM
1 stop6h 56m
United Airlines
Wed 8/76:00 a.m.
PWM
-
YYZ
1 stop5h 49m
United Airlines
Deal found 17/6C$ 560
Sun 23/87:29 a.m.
YYZ
-
PWM
1 stop5h 11m
American Airlines
Fri 28/86:46 p.m.
PWM
-
YYZ
1 stop5h 00m
American Airlines
Deal found 19/6C$ 563
Wed 15/77:43 p.m.
YYZ
-
PWM
1 stop4h 08m
United Airlines
Wed 22/76:00 a.m.
PWM
-
YYZ
1 stop5h 49m
United Airlines
Deal found 16/6C$ 601
Tue 14/72:30 p.m.
YYZ
-
PWM
1 stop4h 57m
United Airlines
Tue 21/76:00 a.m.
PWM
-
YYZ
1 stop5h 49m
United Airlines
Deal found 16/6C$ 603
Sat 4/74:18 p.m.
YYZ
-
PWM
1 stop18h 13m
American Airlines
Fri 10/76:59 p.m.
PWM
-
YYZ
1 stop4h 51m
American Airlines
Deal found 16/6C$ 610
Wed 15/712:39 p.m.
YYZ
-
PWM
1 stop9h 54m
American Airlines
Wed 22/71:25 p.m.
PWM
-
YYZ
1 stop5h 20m
American Airlines
Deal found 16/6C$ 614
Tue 8/126:10 p.m.
YYZ
-
PWM
1 stop5h 39m
Delta
Fri 11/125:59 p.m.
PWM
-
YYZ
1 stop15h 32m
Delta
Deal found 16/6C$ 617
Wed 23/911:00 a.m.
YYZ
-
PWM
1 stop10h 23m
United Airlines
Sun 27/96:00 a.m.
PWM
-
YYZ
1 stop5h 49m
United Airlines
Deal found 17/6C$ 623
Sat 18/74:05 p.m.
YYZ
-
PWM
2 stops7h 46m
United Airlines
Sat 25/75:15 a.m.
PWM
-
YYZ
1 stop12h 35m
United Airlines
Deal found 20/6C$ 638
Sat 5/129:28 a.m.
YUL
-
PWM
1 stop10h 01m
Delta
Tue 8/128:00 a.m.
PWM
-
YUL
1 stop8h 05m
Delta
Deal found 16/6C$ 688

Find flight deals from Ontario to Portland

Keep the following information in mind while searching for Ontario to Portland flight deals. Data was last updated 21 June 2026.

Round-trip from

C$ 555

One-way from

C$ 301
United Airlines
  • United Airlines
  • 20/7-27/7
  • 2 total stops
  • 8h 57m total
  • Ontario to Portland
Search Deals
18/8
  • 18/8
  • 2 total stops
  • 14h 49m total
  • Ontario to Portland
Search Deals

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 21 June 2026.
Use the filters below to find and compare flights from Ontario to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Mon 20/7

7:43 p.m.-11:51 p.m.

1 stop4h 08m

Portland

Mon 27/7

5:15 a.m.-10:04 a.m.

1 stop4h 49m

C$ 555

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 4/7

8:45 a.m.-2:31 p.m.

1 stop5h 46m

Portland

Fri 10/7

6:00 a.m.-7:37 p.m.

1 stop13h 37m

C$ 559

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 14/7

2:30 p.m.-7:27 p.m.

1 stop4h 57m

Portland

Tue 21/7

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

1 stop5h 49m

C$ 603

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Tue 8/12

7:59 a.m.-4:59 p.m.

1 stop9h 00m

Portland

Fri 11/12

8:00 a.m.-1:39 p.m.

1 stop5h 39m

C$ 618

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 23/9

11:00 a.m.-9:23 p.m.

1 stop10h 23m

Portland

Sun 27/9

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

1 stop5h 49m

C$ 623

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 18/7

4:05 p.m.-11:51 p.m.

2 stops7h 46m

Portland

Sat 25/7

5:15 a.m.-5:50 p.m.

1 stop12h 35m

C$ 638

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 12/8

4:05 p.m.-11:59 p.m.

2 stops7h 54m

Portland

Wed 19/8

5:15 a.m.-1:08 p.m.

2 stops7h 53m

C$ 638

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 18/9

7:00 p.m.-9:08 a.m.

1 stop14h 08m

Portland

Mon 21/9

4:57 p.m.-12:13 a.m.

1 stop7h 16m

C$ 640

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 29/8

4:05 p.m.-10:04 a.m.

2 stops17h 59m

Portland

Mon 31/8

6:03 a.m.-12:35 p.m.

1 stop6h 32m

C$ 645

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Sat 5/12

9:28 a.m.-7:29 p.m.

1 stop10h 01m

Portland

Tue 8/12

8:00 a.m.-4:05 p.m.

1 stop8h 05m

C$ 688

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/6

Showing 1-10 of 35 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 4h 08m. United Airlines provides one of the quickest options available for as low as C$ 555. The distance between Region of Ontario and Portland, Maine is about 748 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.

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

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Top airline flying from Ontario to Portland

Discover the top airline 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 21 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 571AverageC$ 917FlexibilityNo cancel feeOn-time69%
Search United Airlines 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!

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