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Cheap flights from Maine to Ontario from C$ 138

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 8/4. 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 Maine to Ontario

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

Round-trip from

C$ 286

One-way from

C$ 138

Popular in

November

Cheapest in

September

Average price

C$ 772
Porter Airlines
  • Porter Airlines
  • 15/4-16/4
  • 2 total stops
  • 23h 59m total
  • Maine to Ontario
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8/4
  • 8/4
  • 1 total stop
  • 14h 15m total
  • Maine 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).
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Average for round-trip flights in April 2025
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Find flight deals from Maine to Ontario

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

Tue 15/43:36 p.m.BOS - YYZ
1 stop20h 09mMultiple Airlines
Wed 16/42:00 p.m.YYZ - BOS
1 stop3h 50mMultiple Airlines
Deal found 31/3C$ 286
Wed 16/42:05 p.m.BOS - YTZ
Nonstop1h 59mPorter Airlines
Sun 20/49:05 a.m.YTZ - BOS
Nonstop1h 35mPorter Airlines
Deal found 31/3C$ 287
Thu 17/47:05 a.m.BOS - YTZ
Nonstop1h 59mMultiple Airlines
Sun 20/43:25 p.m.YTZ - BOS
1 stop4h 37mMultiple Airlines
Deal found 31/3C$ 290
Thu 8/511:05 a.m.BOS - YUL
1 stop4h 55mPorter Airlines
Sun 11/510:45 a.m.YUL - BOS
1 stop4h 21mPorter Airlines
Deal found 1/4C$ 306
Wed 23/46:00 a.m.BOS - YYZ
1 stop8h 35mAmerican Airlines
Wed 23/45:25 p.m.YYZ - BOS
1 stop6h 19mAmerican Airlines
Deal found 1/4C$ 314
Thu 1/511:05 a.m.BOS - YUL
1 stop6h 50mMultiple Airlines
Sun 4/51:05 p.m.YUL - BOS
Nonstop1h 27mMultiple Airlines
Deal found 31/3C$ 324
Tue 15/43:40 p.m.BOS - YTZ
1 stop4h 10mAir Canada
Wed 16/48:25 a.m.YTZ - BOS
1 stop6h 32mAir Canada
Deal found 31/3C$ 333
Thu 1/510:20 a.m.BOS - YUL
Nonstop1h 25mAir Canada
Sun 4/51:05 p.m.YUL - BOS
Nonstop1h 27mAir Canada
Deal found 1/4C$ 339
Sat 10/512:15 p.m.BOS - YOW
1 stop5h 58mPorter Airlines
Tue 13/53:25 p.m.YOW - BOS
1 stop6h 06mPorter Airlines
Deal found 1/4C$ 344
Mon 14/47:55 p.m.BOS - YYZ
Nonstop2h 01mAir Canada
Wed 16/410:30 a.m.YYZ - BOS
Nonstop1h 41mAir Canada
Deal found 31/3C$ 350
Sat 10/53:50 p.m.BOS - YOW
Nonstop1h 28mMultiple Airlines
Tue 13/54:40 p.m.YOW - BOS
Nonstop1h 28mMultiple Airlines
Deal found 1/4C$ 375
Mon 5/56:00 a.m.BOS - YUL
1 stop3h 50mAmerican Airlines
Mon 5/512:56 p.m.YUL - BOS
1 stop9h 55mAmerican Airlines
Deal found 31/3C$ 400

Cheapflights Fare Finder

Customize your flight search to find flights from Maine 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 Maine to Ontario that are best for you.

Fly from

Maine

Fly to

Ontario

Route

Depart

Return

Price

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Tue 15/4

3:36 p.m.-11:45 a.m.

1 stop20h 09m

Toronto Pearson Intl

Wed 16/4

2:00 p.m.-5:50 p.m.

1 stop3h 50m

C$ 286

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Wed 16/4

2:05 p.m.-4:04 p.m.

Nonstop1h 59m

Toronto Island

Sun 20/4

9:05 a.m.-10:40 a.m.

Nonstop1h 35m

C$ 287

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Thu 17/4

7:05 a.m.-9:04 a.m.

Nonstop1h 59m

Toronto Island

Sun 20/4

3:25 p.m.-8:02 p.m.

1 stop4h 37m

C$ 290

BostonMontreal

BOS - YUL

BOSYUL

Boston Logan Intl

Thu 8/5

11:05 a.m.-4:00 p.m.

1 stop4h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 11/5

10:45 a.m.-3:06 p.m.

1 stop4h 21m

C$ 306

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Wed 23/4

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

1 stop8h 35m

Toronto Pearson Intl

Wed 23/4

5:25 p.m.-11:44 p.m.

1 stop6h 19m

C$ 314

BostonMontreal

BOS - YUL

BOSYUL

Boston Logan Intl

Thu 1/5

11:05 a.m.-5:55 p.m.

1 stop6h 50m

Montreal Pierre Elliott Trudeau Intl

Sun 4/5

1:05 p.m.-2:32 p.m.

Nonstop1h 27m

C$ 324

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Tue 15/4

3:40 p.m.-7:50 p.m.

1 stop4h 10m

Toronto Island

Wed 16/4

8:25 a.m.-2:57 p.m.

1 stop6h 32m

C$ 333

BostonMontreal

BOS - YUL

BOSYUL

Boston Logan Intl

Thu 1/5

10:20 a.m.-11:45 a.m.

Nonstop1h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 4/5

1:05 p.m.-2:32 p.m.

Nonstop1h 27m

C$ 339

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Sat 10/5

12:15 p.m.-6:13 p.m.

1 stop5h 58m

Ottawa

Tue 13/5

3:25 p.m.-9:31 p.m.

1 stop6h 06m

C$ 344

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Mon 14/4

7:55 p.m.-9:56 p.m.

Nonstop2h 01m

Toronto Pearson Intl

Wed 16/4

10:30 a.m.-12:11 p.m.

Nonstop1h 41m

C$ 350

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/3

Showing 1-10 of 60 results
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Best time to book a flight from Maine to Ontario

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

What is the cheapest time of day to fly from ME to ON?

Find hourly flight availability from Maine 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.

When flying from Maine to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.
To help decide which airline to fly from Maine to Ontario, see what other customers have to say about Delta, Porter Airlines and Air Transat. 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.
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

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

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

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.
Porter Airlines
7.9
Good
278 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

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 Transat
7.8
Good
381 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

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

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

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

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

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 Maine to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as C$ 144. Users have also found prices from C$ 145 and C$ 154 on Air Canada and American Airlines, respectively.

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Maine to Ontario

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