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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$117 CHEAP FLIGHTS from Ontario to Boston

KAYAK searches hundreds of travel sites at once for deals on flights 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

Wed, Jun 24 - Mon, Jun 29

6:00 pm - 7:41 pm

YTZ

BOS

1h 41mnonstop

4:45 pm - 10:20 pm

BOS

YTZ

5h 35m

1 stop

$211Porter Airlines

Thu, May 14 - Sun, May 17

7:00 am - 2:47 pm

YYZ

BOS

7h 47m

2 stops

3:40 pm - 9:58 pm

BOS

YYZ

6h 18m

1 stop

$211Air Canada

Sat, May 16 - Mon, May 18

3:05 pm - 4:46 pm

YTZ

BOS

1h 41mnonstop

7:10 am - 8:57 am

BOS

YTZ

1h 47mnonstop

$212Air Transat

Tue, Apr 21 - Tue, Apr 28

8:55 pm - 10:39 pm

YYZ

BOS

1h 44mnonstop

6:15 am - 8:08 am

BOS

YYZ

1h 53mnonstop

$212Air Canada

Wed, Jun 10 - Mon, Jun 22

4:00 pm - 8:55 pm

YTZ

BOS

4h 55m

1 stop

7:10 am - 8:57 am

BOS

YTZ

1h 47mnonstop

$213Porter Airlines

Sat, Jun 13 - Fri, Jun 19

4:15 pm - 5:59 pm

YYZ

BOS

1h 44mnonstop

5:10 am - 7:05 am

BOS

YYZ

1h 55mnonstop

$213Air Canada

Sat, Jun 27 - Mon, Jul 6

4:30 pm - 9:27 pm

YTZ

BOS

4h 57m

1 stop

2:45 pm - 4:39 pm

BOS

YTZ

1h 54mnonstop

$214Air Canada

Mon, Apr 20 - Thu, Apr 23

6:15 am - 9:49 am

YYZ

BOS

3h 34m

1 stop

6:15 am - 8:08 am

BOS

YYZ

1h 53mnonstop

$214Air Canada

Wed, Apr 29 - Wed, May 6

3:25 pm - 9:54 pm

YUL

BOS

6h 29m

1 stop

10:00 am - 4:10 pm

BOS

YUL

6h 10m

1 stop

$237United Airlines

Thu, May 28 - Mon, Jun 1

7:50 pm - 5:40 pm

YQT

BOS

21h 50m

1 stop

6:30 pm - 6:45 pm

BOS

YQT

24h 15m

2 stops

$398WestJet

Useful Info

Low season	January
High season	August
Cheapest flight	$117

Best time to beat the crowds but there is an average 11% increase in price.

Flight from Montreal to Boston

JenFlew with Porter Airlines

YTZ

BOS

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

YYZ

BOS

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

Hampton

Warwick

Waltham

Everett

Wells

Plymouth

Middletown

Gloucester

Concord

Woburn

Brookline

Revere

York Beach

Burlington

Danvers

West Yarmouth

South Portland

Braintree

Quincy

Everything you need to know for your flight to Boston

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Information on the airport you'll fly into in Boston

Boston (BOS)

$117 Find Cheap Flights from Ontario to Boston

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

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

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

FAQs for booking flights from Ontario to Boston

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.

Traveling to a place near Boston?

Everything you need to know for your flight to Boston

Information on the airport you'll fly into in Boston

Cabin class types available on flights to Ontario

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

Find direct flights for Boston

Flights to other popular destinations

Flights from domestic origins to Boston

Choose which airport to fly into in Boston

Find deals for your return flight