Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Boston to Toronto from C$ 144

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YTO
3 Aug — 10 Aug1
1 adult

Cheapflights Tip: The best prices from Boston Logan Intl to Toronto are usually found in March or September, 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 29 July 2025.

Round-trip from

C$ 311

One-way from

C$ 144

Popular in

November

Cheapest in

March

Average price

C$ 413

Good round-trip deal

C$ 343 or less

Good one-way deal

C$ 154 or less
Porter Airlines
  • Porter Airlines
  • 14/10-21/10
  • 1 total stop
  • 5h 14m total
  • Boston to Toronto
Search Deals
Air Canada
  • Air Canada
  • 13/9
  • Nonstop
  • 1h 56m total
  • Boston to Toronto
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Toronto (YTO).
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Toronto (YTO).
Search Deals

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 29 July 2025.

Tue 14/103:30 p.m.BOS - YTZ
1 stop3h 33mPorter Airlines
Tue 21/103:10 p.m.YTZ - BOS
Nonstop1h 41mPorter Airlines
Deal found 28/7C$ 311
Sat 6/96:00 a.m.BOS - YYZ
1 stop4h 39mAir Canada
Mon 8/98:55 p.m.YYZ - BOS
Nonstop1h 44mAir Canada
Deal found 28/7C$ 316
Thu 21/86:55 p.m.BOS - YYZ
Nonstop1h 55mMultiple Airlines
Wed 27/89:10 a.m.YYZ - BOS
2 stops9h 18mMultiple Airlines
Deal found 28/7C$ 321
Mon 25/810:20 a.m.BOS - YTZ
1 stop6h 26mMultiple Airlines
Tue 26/812:00 p.m.YTZ - BOS
1 stop6h 28mMultiple Airlines
Deal found 28/7C$ 359
Thu 9/106:00 a.m.BOS - YYZ
1 stop6h 00mAmerican Airlines
Tue 14/107:35 a.m.YYZ - BOS
1 stop7h 46mAmerican Airlines
Deal found 29/7C$ 368
Thu 25/96:30 p.m.BOS - YYZ
1 stop11h 42mWestJet
Sun 28/96:30 a.m.YYZ - BOS
1 stop11h 10mWestJet
Deal found 27/7C$ 372
Thu 25/96:30 p.m.BOS - YHM
1 stop30h 10mWestJet
Sun 28/96:00 a.m.YHM - BOS
1 stop11h 40mWestJet
Deal found 27/7C$ 460
Wed 10/96:00 a.m.BOS - YHM
2 stops13h 54mMultiple Airlines
Wed 17/97:05 a.m.YHM - BOS
3 stops26h 25mMultiple Airlines
Deal found 26/7C$ 560

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 29 July 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

Tue 14/10

3:30 p.m.-7:03 p.m.

1 stop3h 33m

Toronto Island

Tue 21/10

3:10 p.m.-4:51 p.m.

Nonstop1h 41m

C$ 311

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Sat 13/9

6:00 a.m.-12:39 p.m.

1 stop6h 39m

Toronto Pearson Intl

Mon 15/9

8:15 a.m.-9:55 a.m.

Nonstop1h 40m

C$ 314

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Thu 21/8

6:55 p.m.-8:50 p.m.

Nonstop1h 55m

Toronto Pearson Intl

Wed 27/8

9:10 a.m.-6:28 p.m.

2 stops9h 18m

C$ 321

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Fri 5/9

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

Nonstop1h 49m

Toronto Island

Sun 7/9

12:00 p.m.-5:58 p.m.

1 stop5h 58m

C$ 348

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Sat 6/9

4:55 p.m.-11:11 p.m.

1 stop6h 16m

Toronto Pearson Intl

Sat 20/9

6:03 a.m.-10:53 a.m.

1 stop4h 50m

C$ 368

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Thu 25/9

6:30 p.m.-6:12 a.m.

1 stop11h 42m

Toronto Pearson Intl

Sun 28/9

6:30 a.m.-5:40 p.m.

1 stop11h 10m

C$ 372

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Mon 8/9

7:30 p.m.-11:03 p.m.

1 stop3h 33m

Toronto Pearson Intl

Thu 18/9

10:55 a.m.-6:49 p.m.

1 stop7h 54m

C$ 375

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Sat 6/9

8:25 a.m.-1:47 p.m.

1 stop5h 22m

Toronto Pearson Intl

Mon 8/9

10:45 a.m.-3:13 p.m.

1 stop4h 28m

C$ 377

BostonHamilton

BOS - YHM

BOSYHM

Boston Logan Intl

Thu 25/9

6:30 p.m.-12:40 a.m.

1 stop30h 10m

Hamilton

Sun 28/9

6:00 a.m.-5:40 p.m.

1 stop11h 40m

C$ 460

BostonHamilton

BOS - YHM

BOSYHM

Boston Logan Intl

Wed 10/9

6:00 a.m.-7:54 p.m.

2 stops13h 54m

Hamilton

Wed 17/9

7:05 a.m.-9:30 a.m.

3 stops26h 25m

C$ 560

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 23 results
1
2
3

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 25 July 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$ 167). 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 29 July 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 16% 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 29 July 2025.

The most flights from BOS to YTO are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

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 29 July 2025.
Get a feel of what it's like to fly with Porter Airlines,Delta, andAir Transat 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
8.0
Very good
317 reviews
Check prices

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.7

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
317 reviews
Porter Airlines
8.0
Very good
317 reviews
Check prices

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.7

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Delta
8.0
Very good
7,979 reviews
Porter Airlines
8.0
Very good
317 reviews
Check prices

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.7

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Air Transat
7.7
Good
424 reviews
Porter Airlines
8.0
Very good
317 reviews
Check prices

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.7

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,896 reviews
Porter Airlines
8.0
Very good
317 reviews
Check prices

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.7

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
8.0
Very good
317 reviews
Check prices

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.7

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

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 17 outbound flights to Toronto per day from 3 airlines. Boston Logan Intl is conveniently located just 4.2 km from Boston’s city centre.

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

    Porter Airlines, at C$ 311, was found to be the cheapest airline from Boston to Toronto.Alternate airlines to your destination round-trip include Air Canada and Delta. These flights start at 29% lower than the current average price 3 months from now.

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

    C$ 144 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 Porter Airlines and WestJet, with prices starting from C$ 147 and C$ 158, 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: Brussels Airlines (75%), United Airlines (65%), Air Canada( 62%).

  • What are the cheapest flights from Boston to Toronto?

    While on average a flight from Boston to Toronto is generally C$ 428, our data shows the cheapest flight currently is C$ 155. When looking at the most popular route, (Boston Logan Intl - Toronto Pearson Intl), you can expect to pay C$ 344 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$ 167). 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

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 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 29 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 206AverageC$ 490FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 292AverageC$ 428FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 341AverageC$ 528FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Boston to Toronto via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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!

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.