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Cheap flights from Ontario to Portland, ME from C$ 333

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — PWM
4 Jun — 11 Jun1
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 5 May 2026.

Wed 27/512:05 p.m.
YYZ
-
PWM
1 stop12h 38m
Delta
Sat 30/56:02 a.m.
PWM
-
YYZ
1 stop7h 38m
Delta
Deal found 30/4C$ 528
Tue 9/63:18 p.m.
YYZ
-
PWM
1 stop17h 35m
American Airlines
Sat 13/610:24 a.m.
PWM
-
YYZ
1 stop8h 24m
American Airlines
Deal found 1/5C$ 533
Sat 6/62:29 p.m.
YUL
-
PWM
1 stop20h 04m
Delta
Tue 9/66:00 a.m.
PWM
-
YUL
1 stop12h 54m
Delta
Deal found 3/5C$ 574
Fri 22/57:44 p.m.
YUL
-
PWM
1 stop25h 04m
Delta
Tue 26/55:51 p.m.
PWM
-
YUL
1 stop14h 48m
Delta
Deal found 2/5C$ 580
Thu 21/510:30 a.m.
YUL
-
PWM
1 stop22h 23m
American Airlines
Sat 23/510:24 a.m.
PWM
-
YUL
1 stop23h 32m
American Airlines
Deal found 1/5C$ 581
Sat 23/55:29 p.m.
YYZ
-
PWM
1 stop16h 09m
American Airlines
Sat 30/510:24 a.m.
PWM
-
YYZ
1 stop8h 24m
American Airlines
Deal found 3/5C$ 585
Sat 13/67:55 a.m.
YYZ
-
PWM
1 stop13h 40m
Delta
Tue 16/612:40 p.m.
PWM
-
YYZ
1 stop4h 44m
Delta
Deal found 3/5C$ 586
Wed 17/68:10 a.m.
YYZ
-
PWM
1 stop13h 36m
American Airlines
Wed 24/61:36 p.m.
PWM
-
YYZ
1 stop5h 09m
American Airlines
Deal found 3/5C$ 605
Fri 15/53:25 p.m.
YUL
-
PWM
1 stop7h 58m
United Airlines
Mon 18/57:10 p.m.
PWM
-
YUL
1 stop5h 03m
United Airlines
Deal found 30/4C$ 611
Mon 18/511:23 a.m.
YUL
-
PWM
1 stop7h 00m
United Airlines
Thu 28/510:55 a.m.
PWM
-
YUL
1 stop5h 15m
United Airlines
Deal found 1/5C$ 614
Fri 5/62:45 p.m.
YYZ
-
PWM
1 stop7h 06m
United Airlines
Sun 7/65:15 a.m.
PWM
-
YYZ
1 stop4h 49m
United Airlines
Deal found 3/5C$ 631
Mon 18/56:00 a.m.
YUL
-
PWM
1 stop5h 55m
Delta
Thu 28/52:38 p.m.
PWM
-
YUL
2 stops25h 37m
Delta
Deal found 1/5C$ 639

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 5 May 2026.

Round-trip from

C$ 527

One-way from

C$ 333
Delta
  • Delta
  • 7/7-15/7
  • 2 total stops
  • 28h 09m total
  • Ontario to Portland
Search Deals
Delta
  • Delta
  • 8/6
  • 1 total stop
  • 8h 54m 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 5 May 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

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 27/5

12:05 p.m.-12:43 a.m.

1 stop12h 38m

Portland

Sat 30/5

6:02 a.m.-1:40 p.m.

1 stop7h 38m

C$ 528

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

2:29 p.m.-10:33 a.m.

1 stop20h 04m

Portland

Tue 9/6

6:00 a.m.-6:54 p.m.

1 stop12h 54m

C$ 574

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 3/6

12:05 p.m.-12:43 a.m.

1 stop12h 38m

Portland

Wed 10/6

6:00 a.m.-1:42 p.m.

1 stop7h 42m

C$ 585

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 30/5

2:30 p.m.-10:17 a.m.

1 stop19h 47m

Portland

Sat 6/6

6:02 a.m.-5:59 p.m.

1 stop11h 57m

C$ 585

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Sat 13/6

7:55 a.m.-9:35 p.m.

1 stop13h 40m

Portland

Tue 16/6

12:40 p.m.-5:24 p.m.

1 stop4h 44m

C$ 586

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Thu 21/5

10:30 a.m.-8:53 a.m.

1 stop22h 23m

Portland

Sat 23/5

10:24 a.m.-9:56 a.m.

1 stop23h 32m

C$ 603

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Fri 15/5

3:25 p.m.-11:23 p.m.

1 stop7h 58m

Portland

Mon 18/5

7:10 p.m.-12:13 a.m.

1 stop5h 03m

C$ 611

MontrealPortland

YUL - PWM

YULPWM

Montreal Pierre Elliott Trudeau Intl

Mon 18/5

11:23 a.m.-6:23 p.m.

1 stop7h 00m

Portland

Thu 28/5

10:55 a.m.-4:10 p.m.

1 stop5h 15m

C$ 614

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Fri 5/6

2:45 p.m.-9:51 p.m.

1 stop7h 06m

Portland

Sun 7/6

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

1 stop4h 49m

C$ 631
Quickest round-trip

TorontoPortland

YYZ - PWM

YYZPWM

Toronto Pearson Intl

Wed 30/9

6:15 a.m.-11:01 a.m.

1 stop4h 46m

Portland

Wed 7/10

5:59 p.m.-11:13 p.m.

1 stop5h 14m

C$ 644

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 37 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 12h 38m. Delta provides one of the quickest options available for as low as C$ 528. 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 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 549AverageC$ 843FlexibilityNo 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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