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Cheap flights from Portland, ME to Ontario from C$ 253

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — YYZ
25 Feb — 4 Mar1
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 20 February 2025.

Round-trip from

C$ 466

One-way from

C$ 253

Popular in

May

Cheapest in

September

Average price

C$ 686
4/4-11/4
  • 4/4-11/4
  • 2 total stops
  • 54h 09m total
  • Portland to Ontario
Search Deals
Delta
  • Delta
  • 5/4
  • 1 total stop
  • 21h 09m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 173 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 20 February 2025.

Fri 4/412:21 p.m.PWM - YYZ
1 stop25h 34mMultiple Airlines
Fri 11/46:45 a.m.YYZ - PWM
1 stop28h 35mMultiple Airlines
Deal found 19/2C$ 466
Sat 5/46:15 a.m.PWM - YYZ
1 stop6h 28mUnited Airlines
Sat 12/46:00 p.m.YYZ - PWM
1 stop5h 27mUnited Airlines
Deal found 18/2C$ 491
Wed 19/35:42 a.m.PWM - YYZ
2 stops9h 18mAmerican Airlines
Wed 26/310:55 a.m.YYZ - PWM
1 stop5h 45mAmerican Airlines
Deal found 20/2C$ 506
Fri 18/47:00 a.m.PWM - YYZ
1 stop8h 09mDelta
Tue 22/46:05 p.m.YYZ - PWM
1 stop6h 35mDelta
Deal found 18/2C$ 526
Thu 3/45:23 p.m.PWM - YUL
2 stops24h 37mMultiple Airlines
Thu 10/46:45 a.m.YUL - PWM
3 stops34h 25mMultiple Airlines
Deal found 18/2C$ 608
Sat 5/410:07 a.m.PWM - YUL
1 stop23h 43mAmerican Airlines
Tue 8/45:30 p.m.YUL - PWM
1 stop18h 08mAmerican Airlines
Deal found 20/2C$ 629
Sat 19/47:00 a.m.PWM - YYZ
1 stop15h 55mWestJet
Sun 27/46:00 a.m.YYZ - PWM
1 stop17h 09mWestJet
Deal found 18/2C$ 635
Sat 19/46:15 a.m.PWM - YYZ
1 stop5h 29mAir Canada
Sun 27/46:30 a.m.YYZ - PWM
2 stops16h 57mAir Canada
Deal found 19/2C$ 939
Wed 9/75:00 p.m.PWM - YUL
1 stop6h 09mWestJet
Sun 13/74:55 p.m.YUL - PWM
1 stop19h 06mWestJet
Deal found 19/2C$ 974
Sat 5/49:30 a.m.PWM - YUL
1 stop6h 20mUnited Airlines
Sat 12/49:15 a.m.YUL - PWM
1 stop5h 47mUnited Airlines
Deal found 19/2C$ 1,027
Thu 10/73:04 p.m.PWM - YUL
2 stops9h 37mAir Canada
Sun 13/74:30 p.m.YUL - PWM
1 stop6h 31mAir Canada
Deal found 19/2C$ 1,044
Fri 7/36:00 a.m.PWM - YUL
1 stop4h 26mDelta
Sun 9/35:23 p.m.YUL - PWM
1 stop5h 29mDelta
Deal found 19/2C$ 1,119

Find flights from Portland to Ontario within your budget

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 20 February 2025.

Fly from

Portland

Fly to

Ontario

Route

Depart

Return

Price

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Fri 4/4

12:21 p.m.-1:55 p.m.

1 stop25h 34m

Toronto Pearson Intl

Fri 11/4

6:45 a.m.-11:20 a.m.

1 stop28h 35m

C$ 466

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 5/4

6:15 a.m.-12:43 p.m.

1 stop6h 28m

Toronto Pearson Intl

Sat 12/4

6:00 p.m.-11:27 p.m.

1 stop5h 27m

C$ 491

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 19/3

5:42 a.m.-3:00 p.m.

2 stops9h 18m

Toronto Pearson Intl

Wed 26/3

10:55 a.m.-4:40 p.m.

1 stop5h 45m

C$ 506

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Fri 18/4

7:00 a.m.-3:09 p.m.

1 stop8h 09m

Toronto Pearson Intl

Tue 22/4

6:05 p.m.-12:40 a.m.

1 stop6h 35m

C$ 526

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Thu 3/4

5:23 p.m.-6:00 p.m.

2 stops24h 37m

Montreal Pierre Elliott Trudeau Intl

Thu 10/4

6:45 a.m.-5:10 p.m.

3 stops34h 25m

C$ 608

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Sat 5/4

10:07 a.m.-9:50 a.m.

1 stop23h 43m

Montreal Pierre Elliott Trudeau Intl

Tue 8/4

5:30 p.m.-11:38 a.m.

1 stop18h 08m

C$ 629

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 19/4

7:00 a.m.-10:55 p.m.

1 stop15h 55m

Toronto Pearson Intl

Sun 27/4

6:00 a.m.-11:09 p.m.

1 stop17h 09m

C$ 635

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 19/4

6:15 a.m.-11:44 a.m.

1 stop5h 29m

Toronto Pearson Intl

Sun 27/4

6:30 a.m.-11:27 p.m.

2 stops16h 57m

C$ 939

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Wed 9/7

5:00 p.m.-11:09 p.m.

1 stop6h 09m

Montreal Pierre Elliott Trudeau Intl

Sun 13/7

4:55 p.m.-12:01 p.m.

1 stop19h 06m

C$ 974

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Sat 5/4

9:30 a.m.-3:50 p.m.

1 stop6h 20m

Montreal Pierre Elliott Trudeau Intl

Sat 12/4

9:15 a.m.-3:02 p.m.

1 stop5h 47m

C$ 1,027

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

Showing 1-10 of 19 results
1
2

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.

Travel insights for flights from Portland to Ontario

Get recent, data-driven insights about flights from Portland to Ontario including ideal travel times, pricing trends, and more.

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 20 February 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 20 February 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
8,220 reviews
Check prices

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,220 reviews
Delta
8.0
Very good
8,220 reviews
Check prices

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,766 reviews
Delta
8.0
Very good
8,220 reviews
Check prices

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,220 reviews
Check prices

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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
2,801 reviews
Delta
8.0
Very good
8,220 reviews
Check prices

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,748 reviews
Delta
8.0
Very good
8,220 reviews
Check prices

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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.

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

    One-way options have recently been found by users for as low as C$ 253 on Delta. Other airlines that offer cheap prices include United Airlines from C$ 334 and American Airlines from C$ 430 one-way.

  • 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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