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Cheap flights from Boston to Ontario from C$ 139

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YYZ
1 Aug — 8 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Boston to Ontario
Explore the most affordable flight options available from Boston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2026.

Wed 23/96:00 a.m.
BOS
-
YYZ
Nonstop1h 56m
Air Canada
Wed 30/94:15 p.m.
YYZ
-
BOS
Nonstop1h 49m
Air Canada
Deal found 2/7C$ 283
Wed 29/73:35 p.m.
BOS
-
YTZ
1 stop6h 18m
Porter Airlines
Wed 5/83:05 p.m.
YTZ
-
BOS
Nonstop1h 41m
Porter Airlines
Deal found 1/7C$ 283
Mon 10/811:10 a.m.
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
Thu 20/81:35 p.m.
YTZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 1/7C$ 284
Tue 4/83:55 p.m.
BOS
-
YTZ
1 stop5h 53m
Porter Airlines
Wed 12/81:35 p.m.
YTZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 1/7C$ 286
Mon 20/78:30 p.m.
BOS
-
YTZ
Nonstop1h 49m
Porter Airlines
Sat 25/73:05 p.m.
YTZ
-
BOS
Nonstop1h 39m
Porter Airlines
Deal found 29/6C$ 287
Fri 11/93:55 p.m.
BOS
-
YYZ
1 stop6h 09m
Porter Airlines
Sun 13/97:25 a.m.
YYZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 1/7C$ 289
Tue 4/811:10 a.m.
BOS
-
YTZ
Nonstop1h 47m
Porter Airlines
Sat 15/81:35 p.m.
YTZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 1/7C$ 289
Tue 22/93:55 p.m.
BOS
-
YYZ
1 stop6h 09m
Porter Airlines
Sun 27/97:25 a.m.
YYZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 1/7C$ 290
Wed 22/78:25 p.m.
BOS
-
YTZ
Nonstop1h 49m
Porter Airlines
Fri 31/73:05 p.m.
YTZ
-
BOS
Nonstop1h 39m
Porter Airlines
Deal found 28/6C$ 290
Thu 3/910:05 a.m.
BOS
-
YYZ
Nonstop1h 55m
Porter Airlines
Thu 3/93:40 p.m.
YYZ
-
BOS
1 stop5h 15m
Porter Airlines
Deal found 27/6C$ 291
Thu 23/77:10 a.m.
BOS
-
YTZ
Nonstop1h 49m
Porter Airlines
Wed 29/73:05 p.m.
YTZ
-
BOS
Nonstop1h 39m
Porter Airlines
Deal found 28/6C$ 291
Tue 1/910:05 a.m.
BOS
-
YYZ
Nonstop1h 55m
Porter Airlines
Sat 5/97:25 a.m.
YYZ
-
BOS
Nonstop1h 40m
Porter Airlines
Deal found 28/6C$ 293

Find flight deals from Boston to Ontario

Keep the following information in mind while searching for Boston to Ontario flight deals. Data was last updated 2 July 2026.

Round-trip from

C$ 283

One-way from

C$ 139

Popular in

April

Cheapest in

October

Average price

C$ 405

Good round-trip deal

C$ 336 or less

Good one-way deal

C$ 150 or less
Porter Airlines
  • Porter Airlines
  • 23/10-27/10
  • Nonstop
  • 3h 19m total
  • Boston to Ontario
Search Deals
Air Canada
  • Air Canada
  • 4/8
  • Nonstop
  • 1h 36m total
  • Boston to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Ontario.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 2 July 2026.
Use the filters below to find and compare flights from Boston to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Sun 26/7

7:10 a.m.-8:59 a.m.

Nonstop1h 49m

Toronto Island

Fri 31/7

8:50 a.m.-10:29 a.m.

Nonstop1h 39m

C$ 347

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Thu 26/11

3:03 p.m.-9:15 p.m.

1 stop6h 12m

Toronto Pearson Intl

Sun 29/11

8:35 a.m.-10:17 a.m.

Nonstop1h 42m

C$ 367

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Mon 20/7

3:35 p.m.-10:04 p.m.

1 stop6h 29m

Toronto Pearson Intl

Fri 31/7

7:25 a.m.-9:05 a.m.

Nonstop1h 40m

C$ 367

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Tue 17/11

1:15 p.m.-6:28 p.m.

1 stop5h 13m

Toronto Island

Tue 24/11

7:15 a.m.-4:42 p.m.

2 stops9h 27m

C$ 370

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Thu 20/8

10:05 a.m.-12:00 p.m.

Nonstop1h 55m

Toronto Pearson Intl

Sun 23/8

3:40 p.m.-8:55 p.m.

1 stop5h 15m

C$ 371

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Thu 13/8

10:05 a.m.-12:00 p.m.

Nonstop1h 55m

Toronto Pearson Intl

Thu 20/8

3:40 p.m.-8:55 p.m.

1 stop5h 15m

C$ 371

BostonToronto

BOS - YTZ

BOSYTZ

Boston Logan Intl

Sun 16/8

7:10 a.m.-8:57 a.m.

Nonstop1h 47m

Toronto Island

Sun 23/8

3:05 p.m.-4:46 p.m.

Nonstop1h 41m

C$ 380

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Sat 18/7

3:35 p.m.-10:04 p.m.

1 stop6h 29m

Toronto Pearson Intl

Thu 6/8

3:40 p.m.-8:55 p.m.

1 stop5h 15m

C$ 387

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Sat 17/10

12:36 p.m.-7:00 p.m.

1 stop6h 24m

Toronto Pearson Intl

Sun 25/10

5:30 p.m.-9:28 p.m.

1 stop3h 58m

C$ 398

BostonToronto

BOS - YYZ

BOSYYZ

Boston Logan Intl

Fri 21/8

7:30 p.m.-9:25 p.m.

Nonstop1h 55m

Toronto Pearson Intl

Sun 23/8

3:40 p.m.-8:55 p.m.

1 stop5h 15m

C$ 404

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Boston to Ontario

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

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

Currently, December is the cheapest month in which you can book a flight from Boston to Region of Ontario (average of C$ 165). Flying from Boston to Region of Ontario in March is currently the most expensive (average of C$ 2,318). 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 ON?

Find hourly flight availability from Boston 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 2 July 2026.

When flying from Boston to Region of Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 29% versus a flight at noon.

Weekly flight availability from Boston to Region of Ontario

Explore weekly flight availability from Boston to Ontario. 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 2 July 2026.

The most flights from BOS to CAON are scheduled on a Wednesday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

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

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

The price you pay for your flight from Boston to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 61 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 Boston to Region of Ontario?

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

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

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 2 July 2026.
Check out reviews from past customers who have flown with Porter Airlines and Air Canada from Boston to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
442 reviews
Check prices

Crew

8.6

Entertainment

6.9

Boarding

8.2

Overall

7.9

Food

7.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!
Porter Airlines
7.9
Good
442 reviews
Porter Airlines
7.9
Good
442 reviews
Check prices

Crew

8.6

Entertainment

6.9

Boarding

8.2

Overall

7.9

Food

7.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!
Air Canada
7.1
Good
11,290 reviews
Porter Airlines
7.9
Good
442 reviews
Check prices

Crew

8.6

Entertainment

6.9

Boarding

8.2

Overall

7.9

Food

7.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!

Related info for your journey

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

    For a flight from Boston to Ontario, you will be flying from Logan Intl. Boston Logan Intl (BOS) is just 4.2 km from the centre of the city.

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

    For as low as C$ 330, Porter Airlines can have you in Region of Ontario from Boston in 1h 55m. Boston and Region of Ontario are separated by a distance of 715 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at C$ 131. Air Canada flights start at C$ 133 while deals on Air Transat start at C$ 180 one-way.

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

    The most popular route from Boston to Region of Ontario is Boston Logan Intl - Toronto Island. You may also consider Boston Logan Intl - Toronto Pearson Intl or Boston Logan Intl - Montreal Pierre Elliott Trudeau Intl.

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

    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 Boston to Region of Ontario on time: Jazz (83%), ITA Airways (83%), Brussels Airlines (77%).

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

    While on average a flight from Boston to Region of Ontario is generally C$ 537, our data shows the cheapest flight currently is C$ 147. When looking at the most popular route, (Boston Logan Intl - Toronto Island), you can expect to pay C$ 266 for that flight.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Boston to Region of Ontario (average of C$ 165). Flying from Boston to Region of Ontario in March is currently the most expensive (average of C$ 2,318). 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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Top 2 airlines flying from Boston to Ontario

Discover the top 2 airlines that operate flights from Boston to Ontario. 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 2 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 318AverageC$ 448FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 336AverageC$ 453FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Boston to Ontario 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 Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Boston to Ontario with no change fees.

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

Of course! You can now track prices for flights from Boston to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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