HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$105+ Cheap flights from Maine to Ontario

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — YYZ
Mar 1 — Mar 81
Sun 3/1
Sun 3/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maine to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 30, 2026.

This Flybillet deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flybillet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:15 am
BOS
-
YYZ
Nonstop2h 02m
Air Canada
Sun 3/18:55 pm
YYZ
-
BOS
Nonstop1h 42m
Air Canada
Deal found 1/29$200
This Booking.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:55 pm
BOS
-
YYZ
Nonstop2h 03m
Air Canada
Sat 3/2110:30 am
YYZ
-
BOS
Nonstop1h 42m
Air Canada
Deal found 1/28$202
This Booking.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:15 am
BOS
-
YYZ
Nonstop2h 02m
Air Canada
Fri 3/2011:00 am
YYZ
-
BOS
1 stop3h 52m
Air Canada
Deal found 1/27$208
This Booking.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/155:30 am
BOS
-
YYZ
1 stop5h 19m
Air Canada
Sun 3/228:55 pm
YYZ
-
BOS
Nonstop1h 42m
Air Canada
Deal found 1/29$210
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:15 pm
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
Sun 5/38:50 am
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 1/27$247
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:15 pm
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
Thu 5/78:50 am
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 1/29$248
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:05 am
BOS
-
YTZ
Nonstop1h 59m
Porter Airlines
Tue 4/288:30 pm
YTZ
-
BOS
Nonstop1h 35m
Porter Airlines
Deal found 1/26$249
This Trip.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:55 pm
BOS
-
YTZ
Nonstop1h 57m
Porter Airlines
Mon 2/238:30 pm
YTZ
-
BOS
Nonstop1h 35m
Porter Airlines
Deal found 1/28$251
This Vliegwinkel deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/263:30 pm
BOS
-
YTZ
1 stop4h 33m
Porter Airlines
Sun 3/17:35 pm
YTZ
-
BOS
Nonstop1h 35m
Porter Airlines
Deal found 1/28$252
This Trip.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:00 am
BOS
-
YTZ
Nonstop1h 57m
Porter Airlines
Thu 2/269:30 am
YTZ
-
BOS
Nonstop1h 35m
Porter Airlines
Deal found 1/27$254
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:15 pm
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
Sun 6/76:00 pm
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 1/28$255
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:27 am
BOS
-
YOW
1 stop11h 58m
Multiple Airlines
Wed 3/47:00 am
YOW
-
BOS
1 stop10h 15m
Multiple Airlines
Deal found 1/28$265

Find flight deals from Maine to Ontario

Keep the following information in mind while searching for Maine to Ontario flight deals. Data was last updated January 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(Flybillet)

One-way from

$105
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$760
Provider with most accurate pricing for Portland-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Toronto (YTO) flights.
Search Deals
From Maine to Ontario
Search Deals
One-way flight from Maine to Ontario
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($225 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 2,558,603 searches. Data last updated January 30, 2026.
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 - YTZ

BOSYTZ

Boston Logan Intl

Tue 5/5

6:15 pm-8:02 pm

Nonstop1h 47m

Toronto Island

Thu 5/7

8:50 am-10:31 am

Nonstop1h 41m

$248

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Sun 4/19

5:30 am-11:34 am

1 stop6h 04m

Toronto Pearson Intl

Sat 5/9

5:30 pm-9:27 pm

1 stop3h 57m

$253

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Thu 4/2

1:25 pm-3:24 pm

Nonstop1h 59m

Toronto Island

Sun 4/5

8:00 am-9:35 am

Nonstop1h 35m

$254

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Mon 4/27

1:25 pm-3:24 pm

Nonstop1h 59m

Toronto Island

Wed 4/29

1:10 pm-2:45 pm

Nonstop1h 35m

$254

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Wed 3/18

3:30 pm-8:03 pm

1 stop4h 33m

Toronto Island

Sun 3/22

9:30 am-11:05 am

Nonstop1h 35m

$267

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Sat 5/2

12:15 pm-2:04 pm

Nonstop1h 49m

Toronto Island

Sun 5/3

8:50 am-10:31 am

Nonstop1h 41m

$268

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Thu 2/19

11:31 am-12:25 am

1 stop12h 54m

Ottawa

Mon 2/23

4:40 pm-6:10 pm

Nonstop1h 30m

$269

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Fri 5/22

7:15 am-10:59 am

1 stop3h 44m

Ottawa

Sun 5/24

2:50 pm-4:20 pm

Nonstop1h 30m

$270

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Fri 2/27

6:55 pm-8:52 pm

Nonstop1h 57m

Toronto Island

Mon 3/2

1:10 pm-2:45 pm

Nonstop1h 35m

$280

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Wed 2/25

3:30 pm-5:03 pm

Nonstop1h 33m

Ottawa

Wed 3/4

7:00 am-5:15 pm

1 stop10h 15m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 60 results
1
2
3
...
6

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
No data available for this route at this time. Please check back soon.

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 January 30, 2026.
Get a feel of what it's like to fly with American Airlines from Maine to Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,207 reviews

Entertainment

6.9

Overall

7.2

Food

6.4

Boarding

7.5

Crew

8.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,207 reviews
American Airlines
7.2
Good
11,207 reviews

Entertainment

6.9

Overall

7.2

Food

6.4

Boarding

7.5

Crew

8.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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.

  • How long is the flight from Maine to Region of Ontario?

    Airlines like Porter Airlines, Air Canada, and American Airlines fly from Maine to Region of Ontario in about 1h 47m. The time it takes to get you to your destination can typically vary by up to 15h 27m. There are 432 mi between Maine and Region of Ontario. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Maine to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Vancouver Intl flights
John F Kennedy Intl to Pearson Intl flights
John F Kennedy Intl to Vancouver Intl flights
Newark to Pearson Intl flights
Newark to Vancouver Intl flights
O'Hare Intl to Vancouver Intl flights
San Francisco to Vancouver Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Newark to Pierre Elliott Trudeau Intl flights
Newark to Toronto Island flights
John F Kennedy Intl to Calgary flights
Hobby to Vancouver Intl flights
San Francisco to Pearson Intl flights
Denver to Vancouver Intl flights
Newark to Calgary flights
LaGuardia to Pearson Intl flights
Reagan-National to Pearson Intl flights
George Bush Intcntl to Vancouver Intl flights
Dallas/Fort Worth to Pearson Intl flights
LaGuardia to Vancouver Intl flights
Dulles Intl to Pearson Intl flights
Los Angeles to Pearson Intl flights
O'Hare Intl to Calgary flights
Atlanta to Vancouver Intl flights
Dulles Intl to Vancouver Intl flights
Los Angeles to Calgary flights
Dallas/Fort Worth to Vancouver Intl flights
San Francisco to Calgary flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Boston to Pearson Intl flights
Ontario to Vancouver Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Boston to Vancouver Intl flights
Minneapolis to Vancouver Intl flights
Los Angeles to Abbotsford flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Seattle to Pearson Intl flights
Seattle to Vancouver Intl flights
Sky Harbor Intl to Vancouver Intl flights
San Francisco to Abbotsford flights
Sacramento to Vancouver Intl flights
Minneapolis to Calgary flights
Baltimore to Vancouver Intl flights
Detroit to Vancouver Intl flights
Atlanta to Calgary flights
Boston to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Pearson Intl flights
Boston to Calgary flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights