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Cheap flights from Boston to Toronto from C$ 140

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YTO
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Boston Logan Intl to Toronto are usually found in March or July, booked 78 days in advance, depart on a Thursday or Saturday and return on a Friday

Cheap flight deals from Boston to Toronto

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Toronto (YTO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Round-trip from

C$ 294

One-way from

C$ 140

Popular in

November

Cheapest in

March

Average price

C$ 402

Good round-trip deal

C$ 328 or less

Good one-way deal

C$ 217 or less
Air Canada
  • Air Canada
  • 2/10-4/10
  • 4 total stops
  • 16h 03m total
  • Boston to Toronto
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Air Canada
  • Air Canada
  • 2/10
  • Nonstop
  • 1h 56m total
  • Boston to Toronto
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Highest demand for flights based on searches. 9% potential increase in price (C$ 66 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Toronto (YTO).
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Price to beat on a one-way flight from Boston Logan Intl to Toronto (YTO).
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Find flight deals from Boston to Toronto

Cheapest flights from Boston to Toronto
Explore the most affordable flight options available from Boston to Toronto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Thu 2/106:00 a.m.BOS - YYZ
2 stops7h 03mAir Canada
Sat 4/1012:30 a.m.YYZ - BOS
2 stops9h 00mAir Canada
Deal found 10/9C$ 294
Thu 9/108:45 a.m.BOS - YTZ
Nonstop1h 49mPorter Airlines
Wed 15/103:10 p.m.YTZ - BOS
Nonstop1h 41mPorter Airlines
Deal found 9/9C$ 294
Thu 2/108:45 a.m.BOS - YTZ
Nonstop1h 49mPorter Airlines
Sun 5/1012:00 p.m.YTZ - BOS
1 stop5h 58mPorter Airlines
Deal found 10/9C$ 295
Sat 4/1010:20 a.m.BOS - YTZ
1 stop4h 25mAir Canada
Thu 16/1010:25 a.m.YTZ - BOS
1 stop4h 05mAir Canada
Deal found 11/9C$ 297
Mon 20/106:00 a.m.BOS - YYZ
1 stop4h 39mAir Canada
Fri 24/108:15 a.m.YYZ - BOS
Nonstop1h 40mAir Canada
Deal found 10/9C$ 298
Wed 5/117:05 a.m.BOS - YTZ
Nonstop1h 59mPorter Airlines
Sun 9/1111:05 a.m.YTZ - BOS
Nonstop1h 35mPorter Airlines
Deal found 10/9C$ 298
Fri 14/115:30 a.m.BOS - YYZ
1 stop6h 10mAir Canada
Mon 17/118:15 a.m.YYZ - BOS
Nonstop1h 42mAir Canada
Deal found 10/9C$ 299
Wed 8/103:30 p.m.BOS - YTZ
1 stop3h 33mPorter Airlines
Wed 15/108:20 p.m.YTZ - BOS
Nonstop1h 41mPorter Airlines
Deal found 9/9C$ 299
Sun 5/109:20 a.m.BOS - YTZ
Nonstop1h 49mPorter Airlines
Thu 16/108:20 p.m.YTZ - BOS
Nonstop1h 41mPorter Airlines
Deal found 11/9C$ 301
Thu 2/108:45 a.m.BOS - YTZ
Nonstop1h 49mPorter Airlines
Mon 6/101:00 p.m.YTZ - BOS
Nonstop1h 41mPorter Airlines
Deal found 11/9C$ 302
Sat 25/106:45 p.m.BOS - YTZ
Nonstop1h 49mPorter Airlines
Tue 28/1011:05 a.m.YTZ - BOS
Nonstop1h 35mPorter Airlines
Deal found 10/9C$ 303
Sat 11/107:15 a.m.BOS - YTZ
Nonstop1h 49mPorter Airlines
Sat 11/105:55 p.m.YTZ - BOS
Nonstop1h 41mPorter Airlines
Deal found 9/9C$ 305

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Toronto 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 11 September 2025.
Use the filters below to find and compare flights from Boston to Toronto that are best for you.

Fly from

Boston

Fly to

Toronto

Route

Depart

Return

Price

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Wed 22/10

10:10 a.m.-11:59 a.m.

Nonstop1h 49m

Toronto Island

Sun 26/10

8:00 a.m.-9:35 a.m.

Nonstop1h 35m

C$ 298

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Sun 9/11

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

Nonstop1h 59m

Toronto Island

Wed 12/11

11:05 a.m.-12:40 p.m.

Nonstop1h 35m

C$ 298

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Thu 23/10

7:15 p.m.-9:04 p.m.

Nonstop1h 49m

Toronto Island

Sat 25/10

5:55 p.m.-7:36 p.m.

Nonstop1h 41m

C$ 298

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Tue 23/9

12:15 p.m.-2:04 p.m.

Nonstop1h 49m

Toronto Island

Tue 30/9

1:00 p.m.-2:41 p.m.

Nonstop1h 41m

C$ 298

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Sun 5/10

6:00 a.m.-7:56 a.m.

Nonstop1h 56m

Toronto Pearson Intl

Wed 8/10

8:00 a.m.-2:30 p.m.

1 stop6h 30m

C$ 299

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Tue 28/10

6:40 p.m.-12:04 a.m.

1 stop5h 24m

Toronto Pearson Intl

Wed 29/10

10:00 a.m.-2:52 p.m.

1 stop4h 52m

C$ 306

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Wed 26/11

6:00 a.m.-11:48 a.m.

1 stop5h 48m

Toronto Pearson Intl

Wed 26/11

2:15 p.m.-3:57 p.m.

Nonstop1h 42m

C$ 313

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Fri 3/10

7:15 p.m.-9:04 p.m.

Nonstop1h 49m

Toronto Island

Mon 6/10

1:00 p.m.-2:41 p.m.

Nonstop1h 41m

C$ 324

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Sat 6/12

5:30 a.m.-9:55 a.m.

1 stop4h 25m

Toronto Island

Sat 6/12

5:30 p.m.-9:27 p.m.

1 stop3h 57m

C$ 338

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Fri 7/11

1:25 p.m.-3:24 p.m.

Nonstop1h 59m

Toronto Island

Mon 10/11

11:05 a.m.-12:40 p.m.

Nonstop1h 35m

C$ 338

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 60 results
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Best time to book a flight from Boston to Toronto

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

How far ahead should I book a flight from Boston to Toronto?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Toronto. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from Boston to Toronto, you should look to book at least 78 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boston to Toronto?

Currently, January is the cheapest month in which you can book a flight from Boston to Toronto (average of C$ 168). Flying from Boston to Toronto 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 BOS to YTO?

Find hourly flight availability from Boston to Toronto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

One of the essential ways to save on airfare from Boston to Toronto is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 14% on airfare.

What is the cheapest day to fly from Boston to Toronto?

Use this chart to determine the cheapest time to fly round-trip from Boston to Toronto. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Boston to Toronto flight should consider departing on Tuesday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Toronto

Explore weekly flight availability from Boston to Toronto. 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 11 September 2025.

The most flights from BOS to YTO are scheduled on a Wednesday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

How much does it cost to fly round-trip from Boston to Toronto?

Reviews of airlines servicing Toronto

Get insights into the airlines that provide service to Toronto. 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 Toronto. Reviews last updated 11 September 2025.
Get a feel of what it's like to fly with Porter Airlines,Air Transat, andAir Canada from Boston to Toronto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Transat
7.7
Good
438 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

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

    Most people fly from Boston Logan Intl (BOS) if they book a flight from Boston to Toronto. On average, Logan Intl has 19 outbound flights to Toronto per day from 3 airlines. Boston Logan Intl is conveniently located just 4.2 km from Boston’s city centre.

  • How long is the flight from Boston to Toronto?

    Airlines like Porter Airlines, Air Canada, and United Airlines fly from Boston to Toronto in about 1h 49m. The time it takes to get you to your destination can typically vary by up to 5h 55m. There are 695 km between Boston and Toronto. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Boston to Toronto round-trip?

    Air Canada, at C$ 271, was found to be the cheapest airline from Boston to Toronto.Alternate airlines to your destination round-trip include Porter Airlines and United Airlines. These flights start at 39% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Boston to Toronto one-way?

    C$ 140 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and Porter Airlines, with prices starting from C$ 146 and C$ 146, respectively.

  • What are the most popular routes from Boston to Toronto?

    When deciding which route to take from Boston to Toronto consider Boston Logan Intl - Toronto Pearson Intl, Boston Logan Intl - Toronto Island or Boston Logan Intl - Hamilton as they are the most popular.

  • What are the most reliable airlines from Boston to Toronto?

    Before booking your flight to Toronto from Boston, check out the most reliable airlines to get you to your destination on time: Jazz (81%), ITA Airways (79%), Brussels Airlines( 77%).

  • What are the cheapest flights from Boston to Toronto?

    While on average a flight from Boston to Toronto is generally C$ 585, our data shows the cheapest flight currently is C$ 129. When looking at the most popular route, (Boston Logan Intl - Toronto Pearson Intl), you can expect to pay C$ 288 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Toronto 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 Boston to Toronto?

    Currently, January is the cheapest month in which you can book a flight from Boston to Toronto (average of C$ 168). Flying from Boston to Toronto 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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Top 3 airlines flying from Boston to Toronto

Discover the top 3 airlines that operate flights from Boston to Toronto. 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 271AverageC$ 476FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 295AverageC$ 405FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 345AverageC$ 537FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Boston to Toronto?

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Why should you use Cheapflights to find cheap flight tickets from Boston to Toronto?

Millions of users choose and trust Cheapflights to book the best flight deals from Boston to Toronto for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Boston to Toronto with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boston to Toronto, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Boston to Toronto become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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