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.

$125 CHEAP FLIGHTS from Ontario to Boston

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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

Tue, Sep 29 - Tue, Sep 29

10:30 am - 3:50 pmYTZ Toronto Island-BOS Boston Logan Intl

5h 20m1 stop Ottawa

6:10 pm - 7:57 pmBOS Boston Logan Intl-YTZ Toronto Island

1h 47mnonstop

$186Porter Airlines

Fri, Oct 16 - Sun, Oct 18

10:30 am - 4:12 pmYTZ Toronto Island-BOS Boston Logan Intl

5h 42m1 stop Ottawa

4:55 pm - 6:42 pmBOS Boston Logan Intl-YTZ Toronto Island

1h 47mnonstop

$186Porter Airlines

Tue, Sep 29 - Wed, Oct 7

4:55 pm - 6:35 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

7:30 pm - 9:25 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$186Air Transat

Thu, Oct 1 - Tue, Oct 13

4:55 pm - 6:35 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

10:05 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$186Air Transat

Sat, Oct 10 - Sat, Oct 17

5:30 pm - 9:26 pmYTZ Toronto Island-BOS Boston Logan Intl

3h 56m1 stop Montreal Pierre Elliott Trudeau Intl

7:45 pm - 9:41 pmBOS Boston Logan Intl-YTZ Toronto Island

1h 56mnonstop

$187Air Canada

Wed, Oct 14 - Sun, Oct 18

10:45 am - 2:41 pmYTZ Toronto Island-BOS Boston Logan Intl

3h 56m1 stop Montreal Pierre Elliott Trudeau Intl

9:40 am - 11:36 amBOS Boston Logan Intl-YTZ Toronto Island

1h 56mnonstop

$187Air Canada

Sat, Sep 26 - Sun, Sep 27

11:55 am - 3:50 pmYTZ Toronto Island-BOS Boston Logan Intl

3h 55m1 stop Ottawa

6:10 pm - 7:57 pmBOS Boston Logan Intl-YTZ Toronto Island

1h 47mnonstop

$214Multiple Airlines

Thu, Oct 8 - Tue, Oct 13

7:30 am - 12:43 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

5h 13m1 stop Newark

6:00 am - 7:56 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 56mnonstop

$221Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

6:15 am - 10:31 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

4h 16m1 stop Philadelphia

4:01 pm - 9:40 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

5h 39m1 stop Philadelphia

$226American Airlines

Wed, Nov 11 - Thu, Dec 3

7:30 am - 12:20 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

4h 50m1 stop Philadelphia

7:00 am - 1:01 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

6h 01m1 stop New York LaGuardia

$227American Airlines

Recent last minute flight deals from Ontario to Boston

Sun, Sep 13 - Mon, Sep 14

4:55 pm - 6:35 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

7:30 pm - 9:25 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$229Porter Airlines

Sun, Sep 13 - Wed, Sep 30

7:25 am - 9:05 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

10:05 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$235Porter Airlines

Tue, Sep 15 - Sat, Oct 10

8:10 am - 9:55 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 45mnonstop

6:00 am - 7:56 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 56mnonstop

$240Air Canada

Tue, Sep 15 - Sat, Oct 10

4:30 pm - 9:26 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

4h 56m1 stop Montreal Pierre Elliott Trudeau Intl

6:00 am - 7:56 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 56mnonstop

$248Air Canada

Mon, Sep 14 - Wed, Sep 16

4:55 pm - 6:35 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

7:30 pm - 9:25 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$309Air Transat

Fri, Sep 11 - Mon, Sep 14

7:25 am - 9:05 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

7:30 pm - 9:25 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$309Air Transat

Sun, Sep 13 - Wed, Sep 30

6:00 am - 11:17 amYUL Montreal Pierre Elliott Trudeau Intl-BOS Boston Logan Intl

5h 17m1 stop Newark

10:40 am - 11:55 amBOS Boston Logan Intl-YUL Montreal Pierre Elliott Trudeau Intl

1h 15mnonstop

$314Multiple Airlines

Sun, Sep 13 - Wed, Sep 30

6:00 am - 9:48 amYUL Montreal Pierre Elliott Trudeau Intl-BOS Boston Logan Intl

3h 48m1 stop Newark

6:55 pm - 12:31 amBOS Boston Logan Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 36m1 stop Toronto Pearson Intl

$328Multiple Airlines

Fri, Sep 11 - Sun, Sep 13

5:27 pm - 11:54 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

6h 27m1 stop Washington, D.C. Reagan-National

6:00 am - 10:18 amBOS Boston Logan Intl-YYZ Toronto Pearson Intl

4h 18m1 stop Philadelphia

$357American Airlines

Sun, Sep 13 - Mon, Sep 14

7:25 am - 9:05 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

7:30 pm - 9:25 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$389American Airlines

Recent direct flight deals from Ontario to Boston

Sun, Nov 1 - Mon, Nov 2

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

$186Porter Airlines

Tue, Sep 29 - Wed, Oct 7

4:55 pm - 6:35 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

7:30 pm - 9:25 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$186Air Transat

Tue, Oct 27 - Sun, Nov 1

2:20 pm - 3:52 pmYTZ Toronto Island-BOS Boston Logan Intl

1h 32mnonstop

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

1h 54mnonstop

$186Porter Airlines

Thu, Oct 1 - Tue, Oct 13

4:55 pm - 6:35 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

10:05 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$186Air Transat

Mon, Oct 26 - Thu, Oct 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

$188Air Canada

Sat, Oct 10 - Thu, Oct 15

8:10 am - 9:55 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 45mnonstop

12:45 pm - 2:33 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 48mnonstop

$188Air Canada

Sat, Oct 3 - Sat, Oct 17

7:25 am - 9:05 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

10:05 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$224Multiple Airlines

Sun, Oct 4 - Sun, Oct 11

4:55 pm - 6:35 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

10:05 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$224Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

5:15 pm - 6:55 pmYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

10:05 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$283American Airlines

Thu, Oct 8 - Tue, Oct 13

7:25 am - 9:05 amYYZ Toronto Pearson Intl-BOS Boston Logan Intl

1h 40mnonstop

10:05 am - 12:00 pmBOS Boston Logan Intl-YYZ Toronto Pearson Intl

1h 55mnonstop

$283American Airlines

Useful Info

Low season	January
High season	August
Cheapest flight	$125

Best time to beat the crowds but there is an average 5% increase in price.

Most popular time to fly and prices are also 10% lower on average.

Flight from Toronto Pearson Airport 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

Warwick

Hampton

Wells

Middletown

Waltham

Plymouth

South Portland

Revere

Brookline

Concord

Woburn

Gloucester

Burlington

York Beach

West Yarmouth

Danvers

Seekonk

Quincy

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$125 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

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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

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Find deals for your return flight