BOS

C$ 187 Find Cheap Flights from Ontario to Boston – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boston departing on 26/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Ontario to Boston

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Boston

Fri, 14 Aug - Thu, 20 Aug
Air Canada Logo
12:25 p.m. - 2:02 p.m.
YTZ
-
BOS
1h 37mdirect
Air Canada Logo
9:35 a.m. - 11:34 a.m.
BOS
-
YTZ
1h 59mdirect
C$ 295Air Canada
Wed, 15 Jul - Thu, 6 Aug
Porter Airlines Logo
3:40 p.m. - 8:55 p.m.
YYZ
-
BOS
5h 15m
1 stop
Porter Airlines Logo
10:05 a.m. - 12:00 p.m.
BOS
-
YYZ
1h 55mdirect
C$ 295Porter Airlines
Fri, 26 Jun - Mon, 29 Jun
Air Canada Logo
8:30 a.m. - 2:41 p.m.
YTZ
-
BOS
6h 11m
1 stop
Air Canada Logo
5:45 a.m. - 11:51 a.m.
BOS
-
YTZ
6h 06m
1 stop
C$ 296Air Canada
Fri, 14 Aug - Thu, 20 Aug
Porter Airlines Logo
7:25 a.m. - 9:05 a.m.
YYZ
-
BOS
1h 40mdirect
Porter Airlines Logo
8:10 p.m. - 10:05 p.m.
BOS
-
YYZ
1h 55mdirect
C$ 296Porter Airlines
Sun, 16 Aug - Fri, 21 Aug
Porter Airlines Logo
6:00 p.m. - 7:41 p.m.
YTZ
-
BOS
1h 41mdirect
Porter Airlines Logo
4:45 p.m. - 10:20 p.m.
BOS
-
YTZ
5h 35m
1 stop
C$ 298Porter Airlines
Sun, 16 Aug - Tue, 18 Aug
Porter Airlines Logo
7:25 a.m. - 9:05 a.m.
YYZ
-
BOS
1h 40mdirect
Porter Airlines Logo
8:10 p.m. - 10:05 p.m.
BOS
-
YYZ
1h 55mdirect
C$ 298Porter Airlines
Wed, 15 Jul - Sun, 19 Jul
Porter Airlines Logo
11:55 a.m. - 4:00 p.m.
YTZ
-
BOS
4h 05m
1 stop
Porter Airlines Logo
4:45 p.m. - 10:18 p.m.
BOS
-
YTZ
5h 33m
1 stop
C$ 299Porter Airlines
Thu, 23 Jul - Tue, 28 Jul
Air Transat Logo
4:00 p.m. - 8:55 p.m.
YYZ
-
BOS
4h 55m
1 stop
Air Transat Logo
4:45 p.m. - 10:00 p.m.
BOS
-
YYZ
5h 15m
1 stop
C$ 308Air Transat
Mon, 19 Oct - Tue, 20 Oct
United Airlines Logo
5:15 a.m. - 11:55 a.m.
YQT
-
BOS
6h 40m
1 stop
United Airlines Logo
6:00 a.m. - 5:18 p.m.
BOS
-
YQT
11h 18m
2 stops
C$ 629United Airlines
Mon, 19 Oct - Tue, 20 Oct
United Airlines Logo
5:15 a.m. - 7:25 p.m.
YQT
-
BOS
14h 10m
2 stops
United Airlines Logo
7:38 a.m. - 5:18 p.m.
BOS
-
YQT
9h 40m
2 stops
C$ 637United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flightC$ 187
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Toronto Island to Boston

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

Insights shared by verified travellers who flew the route from Ontario to Boston 
Learn how KAYAK collects reviews and tips from users.
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!

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.

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Old Orchard Beach
Hampton Beach
Ogunquit
Cambridge
Wells
Waltham
Kennebunkport
Hampton
Nashua
Marlborough
South Portland
Revere
Woburn
Merrimack
Quincy
Burlington
Laconia
Lowell
Saco
Andover

Everything you need to know for your flight to Boston

Information on the airport you'll fly into in Boston

Boston (BOS)