How does KAYAK find such low prices on flights from Ontario to Boston?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Boston.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Boston?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to Boston?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Ontario with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Boston?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$140 CHEAP FLIGHTS from Ontario to Boston

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Ontario to Boston

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ontario to Boston

Fri, Dec 11 - Tue, Dec 15

12:15 pm - 4:46 pmYTZ Toronto Island-BOS Boston Logan Intl

4h 31m1 stop Ottawa

1:15 pm - 6:29 pmBOS Boston Logan Intl-YTZ Toronto Island

5h 14m1 stop Ottawa

$233Porter Airlines

Tue, Dec 8 - Mon, Dec 14

10:35 am - 4:46 pmYTZ Toronto Island-BOS Boston Logan Intl

6h 11m1 stop Ottawa

1:15 pm - 6:29 pmBOS Boston Logan Intl-YTZ Toronto Island

5h 14m1 stop Ottawa

$234Porter Airlines

Fri, Nov 20 - Sun, Nov 22

8:55 pm - 10:37 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 42mnonstop

5:45 am - 7:50 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 05mnonstop

$254Air Canada

Thu, Nov 26 - Sun, Nov 29

8:55 pm - 10:37 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 42mnonstop

5:45 am - 7:50 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 05mnonstop

$254Air Canada

Wed, Dec 2 - Mon, Dec 7

5:20 pm - 7:10 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

9:50 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$258Air Transat

Tue, Nov 24 - Tue, Dec 1

5:20 pm - 7:10 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

9:50 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$258Air Transat

Fri, Nov 27 - Fri, Nov 27

6:45 am - 12:46 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

6h 01m1 stop Chicago O'Hare Intl

3:10 pm - 5:11 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 01mnonstop

$285Multiple Airlines

Sat, Jan 2 - Sat, Jan 30

7:20 am - 9:10 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

12:49 pm - 11:55 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

11h 06m1 stop Fort Lauderdale

$290Multiple Airlines

Fri, Nov 27 - Fri, Nov 27

10:30 am - 5:27 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

6h 57m1 stop Newark

8:05 pm - 9:14 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

13h 09m1 stop Newark

$299United Airlines

Fri, Nov 27 - Fri, Nov 27

10:30 am - 5:27 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

6h 57m1 stop Newark

8:05 pm - 9:14 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

13h 09m1 stop Newark

$299United Airlines

Recent last minute flight deals from Ontario to Boston

Tue, Nov 10 - Tue, Nov 17

7:00 am - 4:43 pmYTZ Toronto Island-BOS Boston Logan Intl

9h 43m2 stops Thunder Bay Ottawa

1:15 pm - 6:28 pmBOS Boston Logan Intl-YTZ Toronto Island

5h 13m1 stop Ottawa

$298Porter Airlines

Tue, Nov 10 - Tue, Nov 17

9:00 am - 4:43 pmYTZ Toronto Island-BOS Boston Logan Intl

7h 43m2 stops Fredericton Ottawa

8:00 am - 9:54 amBOS Boston Logan Intl-YTZ Toronto Island

1h 54mnonstop

$309Porter Airlines

Mon, Nov 9 - Sat, Nov 14

8:55 pm - 10:37 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 42mnonstop

5:45 am - 7:50 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 05mnonstop

$337Air Canada

Tue, Nov 10 - Tue, Nov 17

8:30 am - 2:53 pmYTZ Toronto Island-BOS Boston Logan Intl

6h 23m1 stop Montreal Pierre Elliott Trudeau Intl

9:35 am - 11:38 amBOS Boston Logan Intl-YTZ Toronto Island

2h 03mnonstop

$346Air Canada

Tue, Nov 10 - Tue, Nov 17

11:00 am - 12:35 pmYTZ Toronto Island-BOS Boston Logan Intl

1h 35mnonstop

7:50 pm - 9:44 pmBOS Boston Logan Intl-YTZ Toronto Island

1h 54mnonstop

$346Air Transat

Tue, Nov 10 - Tue, Nov 17

7:20 am - 9:10 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

9:50 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$349Air Transat

Tue, Nov 10 - Sat, Nov 14

7:10 am - 2:53 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

7h 43m2 stops Ottawa Montreal Pierre Elliott Trudeau Intl

7:00 pm - 11:26 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

4h 26m1 stop Newark

$360Multiple Airlines

Tue, Nov 10 - Fri, Dec 4

7:43 am - 1:31 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

5h 48m1 stop Newark

2:58 pm - 9:15 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

6h 17m1 stop Chicago O'Hare Intl

$364United Airlines

Tue, Nov 10 - Thu, Nov 19

6:00 am - 11:10 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

5h 10m1 stop New York John F Kennedy Intl

6:05 am - 11:19 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

5h 14m1 stop New York John F Kennedy Intl

$389Delta

Sat, Nov 7 - Mon, Nov 9

3:35 pm - 9:30 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

5h 55m1 stop Chicago O'Hare Intl

7:41 pm - 11:52 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

4h 11m1 stop Washington, D.C. Dulles Intl

$434United Airlines

Recent direct flight deals from Ontario to Boston

Sat, Nov 21 - Sun, Nov 22

5:20 pm - 7:10 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

9:50 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$238Porter Airlines

Wed, Nov 25 - Sat, Nov 28

7:20 am - 9:10 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

5:25 pm - 7:35 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$238Porter Airlines

Fri, Nov 20 - Sun, Nov 22

8:55 pm - 10:37 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 42mnonstop

5:45 am - 7:50 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 05mnonstop

$254Air Canada

Thu, Nov 26 - Sun, Nov 29

8:55 pm - 10:37 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 42mnonstop

5:45 am - 7:50 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 05mnonstop

$254Air Canada

Wed, Dec 2 - Mon, Dec 7

5:20 pm - 7:10 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

9:50 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$258Air Transat

Tue, Nov 24 - Tue, Dec 1

5:20 pm - 7:10 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

9:50 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$258Air Transat

Tue, Dec 1 - Tue, Dec 8

7:20 am - 9:10 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

9:50 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$302Multiple Airlines

Sat, Dec 12 - Sat, Dec 12

7:20 am - 9:10 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 50mnonstop

5:30 pm - 7:40 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 10mnonstop

$310Multiple Airlines

Thu, Nov 26 - Sun, Nov 29

8:55 pm - 10:37 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 42mnonstop

5:45 am - 7:50 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 05mnonstop

$391United Airlines

Thu, Nov 26 - Sun, Nov 29

8:55 pm - 10:37 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 42mnonstop

5:45 am - 7:50 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

2h 05mnonstop

$402United Airlines

Useful Info

Low season	January
High season	October
Cheapest flight	$140

Best time to beat the crowds but there is an average 19% increase in price.

Most popular time to fly and prices are also 11% lower on average.

Flight from Toronto Island to Boston

JenFlew with Porter Airlines-Jan 2026

Get there SUPER EARLY, lines are long, only a few people working. Be prepared to massively overpay for luggage.

Verified travelerFlew with Air Canada-Nov 2024

Don't forget about customs at the Toronto airport--it will take 45+ minutes with the lines unless you have a special status program!

How does KAYAK find such low prices on flights from Ontario to Boston?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Boston.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Boston?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to Boston?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Boston?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Hampton Beach

Everett

Revere

Warwick

South Portland

Hampton

Middletown

Wells

Waltham

Plymouth

Brookline

Woburn

Concord

Gloucester

Burlington

Seekonk

Danvers

York Beach

West Yarmouth

Somerville

More options for your flight to Boston

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

Return flight

Complete your trip to Boston with a hotel stay or car rental

Car rentals in Boston

$140 Find Cheap Flights from Ontario to Boston - Compare and Save

Cheap Flights from Ontario to Boston

Recent round-trip flight deals from Ontario to Boston

Recent one-way flight deals from Ontario to Boston

Recent last minute flight deals from Ontario to Boston

Recent direct flight deals from Ontario to Boston

Good to know

Low season

High season

Cheapest flight

Flights from Ontario to Boston: the best tips from KAYAK users

FAQs for booking flights from Ontario to Boston

Traveling to a place near Boston?

More options for your flight to Boston

Complete your trip to Boston with a hotel stay or car rental

Information on the airport you'll fly into in Boston

Cabin class types available on flights to Ontario

Find direct flights for Boston

Flights from domestic origins to Boston

Flights to other popular destinations

Find deals for your return flight