HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boston

$121+ Cheap flights from Ontario to Boston (BOS)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BOS
Sep 16 — Sep 231
Wed 9/16
Wed 9/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Boston 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 Ontario to Boston

Cheapest flights from Ontario to Boston
Explore the most affordable flight options available from Ontario to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 17, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:15 pm -
Nonstop1h 40m
Sun 9/207:00 am -
Nonstop1h 47m
Deal found 8/12$182
This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:45 pm -
Nonstop1h 40m
Mon 9/2111:10 am -
Nonstop1h 47m
Deal found 8/13$183
This SmartFares deal was found by Cheapflights users on 8/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:35 pm -
Nonstop1h 40m
Sun 9/67:00 am -
Nonstop1h 47m
Deal found 8/14$185
This Trip.com deal was found by Cheapflights users on 8/13. 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.
Sat 9/53:35 pm -
Nonstop1h 40m
Sun 9/67:00 am -
Nonstop1h 47m
Deal found 8/13$187
This Gotogate deal was found by Cheapflights users on 8/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:50 am -
Nonstop1h 40m
Sun 9/67:00 am -
Nonstop1h 47m
Deal found 8/13$189
This Air Canada deal was found by Cheapflights users on 8/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:15 am -
Nonstop1h 37m
Tue 9/82:45 pm -
Nonstop1h 59m
Deal found 8/12$190
This Air Canada deal was found by Cheapflights users on 8/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:15 am -
Nonstop1h 37m
Mon 9/213:35 pm -
1 stop5h 55m
Deal found 8/12$192
This Air Canada deal was found by Cheapflights users on 8/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:55 pm -
Nonstop1h 45m
Sun 9/136:00 am -
Nonstop1h 56m
Deal found 8/12$192
This Trip.com deal was found by Cheapflights users on 8/13. 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.
Fri 9/46:00 pm -
Nonstop1h 40m
Tue 9/88:20 pm -
Nonstop1h 45m
Deal found 8/13$193
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:25 am -
Nonstop1h 40m
Mon 9/217:30 pm -
Nonstop1h 55m
Deal found 8/12$193
This Trip.com deal was found by Cheapflights users on 8/16. 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 9/243:45 pm -
Nonstop1h 40m
Mon 9/287:00 am -
Nonstop1h 47m
Deal found 8/16$195
This Air Canada deal was found by Cheapflights users on 8/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:15 am -
Nonstop1h 37m
Sun 9/69:35 am -
Nonstop1h 59m
Deal found 8/13$196

Find flight deals from Ontario to Boston

Keep the following information in mind while searching for Ontario to Boston flight deals. Data was last updated August 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$182
(Cheapflightsfares)

One-way from

$121
(Trip.com)

Popular in

April

Cheapest in

July

Average price

$259

Good round-trip deal

$200 or less

Good one-way deal

$144 or less
Provider with most accurate pricing for Toronto (YTO)-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Boston Logan Intl flights.
Search Deals
From Ontario to Boston Logan Intl
Search Deals
One-way flight from Ontario to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from Ontario to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Boston 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 August 17, 2026.
Use the filters below to find and compare flights from Ontario to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoBoston

YTZ Toronto Island - BOS Boston Logan Intl

YTZBOS

Toronto Island

Fri 9/11

3:45 pm-5:25 pm

Nonstop1h 40m

Boston Logan Intl

Sun 9/13

2:20 pm-8:15 pm

1 stop5h 55m

$205

TorontoBoston

YTZ Toronto Island - BOS Boston Logan Intl

YTZBOS

Toronto Island

Wed 9/23

8:50 am-10:30 am

Nonstop1h 40m

Boston Logan Intl

Sun 9/27

7:00 am-8:47 am

Nonstop1h 47m

$239

TorontoBoston

YYZ Toronto Pearson Intl - BOS Boston Logan Intl

YYZBOS

Toronto Pearson Intl

Sat 9/19

11:00 am-7:19 pm

1 stop8h 19m

Boston Logan Intl

Mon 9/21

9:00 am-5:56 pm

1 stop8h 56m

$254

TorontoBoston

YYZ Toronto Pearson Intl - BOS Boston Logan Intl

YYZBOS

Toronto Pearson Intl

Thu 9/10

7:30 am-2:22 pm

1 stop6h 52m

Boston Logan Intl

Sun 9/13

7:30 am-11:43 am

1 stop4h 13m

$254

TorontoBoston

YYZ Toronto Pearson Intl - BOS Boston Logan Intl

YYZBOS

Toronto Pearson Intl

Wed 9/2

7:30 am-11:17 am

1 stop3h 47m

Boston Logan Intl

Wed 9/9

6:00 am-11:43 am

1 stop5h 43m

$260

TorontoBoston

YYZ Toronto Pearson Intl - BOS Boston Logan Intl

YYZBOS

Toronto Pearson Intl

Thu 9/3

7:30 am-4:48 pm

1 stop9h 18m

Boston Logan Intl

Sun 9/6

5:45 am-11:35 am

1 stop5h 50m

$264
Quickest round-trip

OttawaBoston

YOW Ottawa - BOS Boston Logan Intl

YOWBOS

Ottawa

Thu 9/10

2:20 pm-3:50 pm

Nonstop1h 30m

Boston Logan Intl

Sun 9/13

2:20 pm-3:44 pm

Nonstop1h 24m

$284

OttawaBoston

YOW Ottawa - BOS Boston Logan Intl

YOWBOS

Ottawa

Sun 9/13

2:20 pm-3:50 pm

Nonstop1h 30m

Boston Logan Intl

Mon 9/14

4:30 pm-9:42 pm

1 stop5h 12m

$310

TorontoBoston

YYZ Toronto Pearson Intl - BOS Boston Logan Intl

YYZBOS

Toronto Pearson Intl

Wed 9/30

7:25 am-9:05 am

Nonstop1h 40m

Boston Logan Intl

Wed 10/7

3:55 pm-10:04 pm

1 stop6h 09m

$312

TorontoBoston

YYZ Toronto Pearson Intl - BOS Boston Logan Intl

YYZBOS

Toronto Pearson Intl

Tue 9/1

1:00 pm-7:22 pm

1 stop6h 22m

Boston Logan Intl

Wed 9/9

7:30 am-1:47 pm

1 stop6h 17m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Ontario to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston 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 Boston

What is the cheapest month to book a flight from Region of Ontario to Boston?

Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Boston (average of $260). Flying from Region of Ontario to Boston in April is currently the most expensive (average of $345). 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 ON to BOS?

Find hourly flight availability from Ontario to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 17, 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 55% on flights from Region of Ontario to Boston by exploring options for tickets in the morning.

Weekly flight availability from Region of Ontario to Boston

Explore weekly flight availability from Ontario to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 17, 2026.

The most flights from CAON to BOS are scheduled on a Saturday (21 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from Region of Ontario to Boston?

Airfare is below average for this route at the moment.
Region of Ontario to Boston flights typically cost between $218 and $316 in September.
The cheapest round-trip price found within the last 5 days was $192 on Air Canada (Sep 11-Sep 13).

How far ahead should I book a flight from Region of Ontario to Boston?

The price you pay for your flight from Region of Ontario to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 85 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from Region of Ontario to Boston?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Boston. Price data was last updated on August 31, 2025.

Travelers seeking maximum savings on their Region of Ontario to Boston flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

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

    Located just 2.6 mi from the city center, Boston Logan Intl (BOS) is the airport most travelers will use when flying to Boston from Ontario.

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

    There are many flights that can get you from Region of Ontario to Boston in 1h 40m. Fly via Porter Airlines, United Airlines, or WestJet to get the fastest option. Region of Ontario and Boston are separated by a distance of 432 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at $115. Air Canada flights start at $121 while deals on Air Transat start at $149 one-way.

  • What are the most popular routes from Region of Ontario to Boston?

    While some choose either Toronto Island - Boston Logan Intl or Montreal Pierre Elliott Trudeau Intl - Boston Logan Intl, Toronto Pearson Intl - Boston Logan Intl is the most popular route from Region of Ontario to Boston.

  • What are the most reliable airlines from Region of Ontario to Boston?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Region of Ontario to Boston on time: Jazz (93%), Air Canada (74%), United Airlines (64%).

  • What are the cheapest flights from Region of Ontario to Boston?

    While on average a flight from Region of Ontario to Boston is generally $523, our data shows the cheapest flight currently is $122. When looking at the most popular route, (Toronto Pearson Intl - Boston Logan Intl), you can expect to pay $193 for that flight.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Boston (average of $260). Flying from Region of Ontario to Boston in April is currently the most expensive (average of $345). 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

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Waltham
Randolph
Concord
Cambridge
Brockton
Seekonk
Cranston
Dedham
Warwick
Peabody
Auburn
Chelsea
York Beach
Londonderry
Revere
Fitchburg
Swansea
North Falmouth
Braintree
Sandwich

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.

Top 4 airlines flying from Ontario to Boston

Discover the top 4 airlines that operate flights from Ontario to Boston. 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 2,558,603 searches. Data last updated August 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$180Average$286FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$186Average$307FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$241Average$419FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$305Average$553FlexibilityNo cancel feeOn-time69%

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.