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Cheap flights from Portland, ME to Ontario from C$ 210

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — YYZ
6 Apr — 13 Apr1
1 adult

Cheap flight deals from Portland to Ontario

Keep the following information in mind while searching for Portland to Ontario flight deals. Data was last updated 1 April 2025.

Round-trip from

C$ 497

One-way from

C$ 210

Popular in

November

Cheapest in

September

Average price

C$ 772
Delta
  • Delta
  • 30/4-4/5
  • 2 total stops
  • 12h 25m total
  • Portland to Ontario
Search Deals
American Airlines
  • American Airlines
  • 10/6
  • 1 total stop
  • 15h 14m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from Portland to Ontario

Cheapest flights from Portland to Ontario
Explore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 April 2025.

Wed 30/45:32 a.m.PWM - YYZ
1 stop5h 48mDelta
Sun 4/56:05 p.m.YYZ - PWM
1 stop6h 37mDelta
Deal found 31/3C$ 497
Wed 30/46:00 a.m.PWM - YYZ
2 stops8h 35mAmerican Airlines
Sun 4/57:30 a.m.YYZ - PWM
1 stop15h 19mAmerican Airlines
Deal found 31/3C$ 510
Thu 15/56:55 p.m.PWM - YYZ
2 stops12h 55mUnited Airlines
Thu 22/57:47 p.m.YYZ - PWM
1 stop4h 10mUnited Airlines
Deal found 31/3C$ 544
Fri 16/56:05 a.m.PWM - YUL
1 stop4h 00mDelta
Fri 23/55:00 p.m.YUL - PWM
1 stop6h 21mDelta
Deal found 31/3C$ 577
Fri 16/55:00 p.m.PWM - YYZ
1 stop5h 58mWestJet
Mon 19/512:15 p.m.YYZ - PWM
1 stop3h 48mWestJet
Deal found 30/3C$ 622
Fri 16/52:05 p.m.PWM - YUL
2 stops22h 16mAmerican Airlines
Fri 23/54:00 p.m.YUL - PWM
2 stops21h 22mAmerican Airlines
Deal found 31/3C$ 797
Sat 7/66:10 a.m.PWM - YYZ
2 stops9h 24mAir Canada
Sun 8/612:05 p.m.YYZ - PWM
2 stops11h 23mAir Canada
Deal found 31/3C$ 818
Thu 3/410:17 a.m.PWM - YYZ
1 stop9h 13mMultiple Airlines
Sat 5/46:15 a.m.YYZ - PWM
2 stops11h 50mMultiple Airlines
Deal found 30/3C$ 851
Wed 2/78:00 a.m.PWM - YUL
1 stop5h 09mMultiple Airlines
Wed 2/73:41 p.m.YUL - PWM
1 stop7h 33mMultiple Airlines
Deal found 1/4C$ 866
Fri 16/56:05 a.m.PWM - YUL
2 stops18h 32mWestJet
Fri 23/55:05 p.m.YUL - PWM
1 stop22h 58mWestJet
Deal found 31/3C$ 894
Fri 18/46:15 a.m.PWM - YUL
1 stop6h 54mUnited Airlines
Mon 21/46:15 a.m.YUL - PWM
1 stop8h 38mUnited Airlines
Deal found 30/3C$ 1,259

Cheapflights Fare Finder

Customize your flight search to find flights from Portland to Ontario 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 1 April 2025.
Use the filters below to find and compare flights from Portland to Ontario that are best for you.

Fly from

Portland

Fly to

Ontario

Route

Depart

Return

Price

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 30/4

5:32 a.m.-11:20 a.m.

1 stop5h 48m

Toronto Pearson Intl

Sun 4/5

6:05 p.m.-12:42 a.m.

1 stop6h 37m

C$ 497

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 30/4

6:00 a.m.-2:35 p.m.

2 stops8h 35m

Toronto Pearson Intl

Sun 4/5

7:30 a.m.-10:49 p.m.

1 stop15h 19m

C$ 510

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Thu 15/5

6:55 p.m.-7:50 a.m.

2 stops12h 55m

Toronto Pearson Intl

Thu 22/5

7:47 p.m.-11:57 p.m.

1 stop4h 10m

C$ 544

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Fri 16/5

6:05 a.m.-10:05 a.m.

1 stop4h 00m

Montreal Pierre Elliott Trudeau Intl

Fri 23/5

5:00 p.m.-11:21 p.m.

1 stop6h 21m

C$ 577

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Fri 16/5

5:00 p.m.-10:58 p.m.

1 stop5h 58m

Toronto Pearson Intl

Mon 19/5

12:15 p.m.-4:03 p.m.

1 stop3h 48m

C$ 622

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Fri 16/5

2:05 p.m.-12:21 p.m.

2 stops22h 16m

Montreal Pierre Elliott Trudeau Intl

Fri 23/5

4:00 p.m.-1:22 p.m.

2 stops21h 22m

C$ 797

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 7/6

6:10 a.m.-3:34 p.m.

2 stops9h 24m

Toronto Pearson Intl

Sun 8/6

12:05 p.m.-11:28 p.m.

2 stops11h 23m

C$ 818

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Wed 2/7

8:00 a.m.-1:09 p.m.

1 stop5h 09m

Montreal Pierre Elliott Trudeau Intl

Wed 2/7

3:41 p.m.-11:14 p.m.

1 stop7h 33m

C$ 866

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Fri 16/5

6:05 a.m.-12:37 a.m.

2 stops18h 32m

Montreal Pierre Elliott Trudeau Intl

Fri 23/5

5:05 p.m.-4:03 p.m.

1 stop22h 58m

C$ 894

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sun 15/6

12:40 p.m.-6:12 a.m.

3 stops41h 32m

Toronto Pearson Intl

Sun 29/6

6:00 p.m.-11:23 a.m.

1 stop17h 23m

C$ 924

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 14 results
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Best time to book a flight from Portland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Portland 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 Portland to Ontario

What is the cheapest month to book a flight from Portland, Maine to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Region of Ontario (average of C$ 167). Flying from Portland, Maine to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 PWM to ON?

Find hourly flight availability from Portland to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland, Maine to Region of Ontario as you normally would.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 1 April 2025.
See what other customers who have flown with Delta, United Airlines and American Airlines from Portland to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,615 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,789 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,012 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Portland to Ontario. 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 from for flights from Portland to Ontario?

    If you book a flight to Ontario from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PWM) is located 4.7 km from the centre of Portland.

  • Can I find deals for flights from Portland to Ontario that include hotel bookings?

    Yes. In addition to deals on Portland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Ontario.

  • Can I find deals for business class flights from Portland to Ontario?

    Yes. Cheapflights offers flight deals from Portland to Ontario 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 Portland, Maine to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Region of Ontario (average of C$ 167). Flying from Portland, Maine to Region of Ontario in July is currently the most expensive (average of C$ 258). 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

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Alternative routes for Portland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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