C$ 139 Find Cheap Flights from Boston to Ontario – 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 from Boston to Ontario departing on 4/8. 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

Save 21% 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
Booking Insights
Flight Deals

Best Ontario Flight Deals from Boston

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Toronto
TorontodirectC$ 282
Ottawa
Ottawa1 stopC$ 386
Thunder Bay
Thunder Bay1 stopC$ 632
Windsor
Windsor2 stopsC$ 630
Toronto
TorontodirectC$ 282
Ottawa
Ottawa1 stopC$ 386
Thunder Bay
Thunder Bay1 stopC$ 632
Windsor
Windsor2 stopsC$ 630

Cheap Flights from Boston to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Ontario 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 Boston to Ontario

Wed, 23 Sep - Wed, 30 Sep
Air Canada Logo
6:00 a.m. - 7:56 a.m.
BOS
-
YYZ
1h 56mdirect
Air Canada Logo
4:15 p.m. - 6:04 p.m.
YYZ
-
BOS
1h 49mdirect
C$ 282Air Canada
Wed, 29 Jul - Wed, 5 Aug
Porter Airlines Logo
3:35 p.m. - 9:53 p.m.
BOS
-
YTZ
6h 18m
1 stop
Porter Airlines Logo
3:05 p.m. - 4:46 p.m.
YTZ
-
BOS
1h 41mdirect
C$ 282Porter Airlines
Mon, 10 Aug - Thu, 20 Aug
Porter Airlines Logo
11:10 a.m. - 12:57 p.m.
BOS
-
YTZ
1h 47mdirect
Porter Airlines Logo
1:35 p.m. - 3:15 p.m.
YTZ
-
BOS
1h 40mdirect
C$ 284Porter Airlines
Tue, 4 Aug - Tue, 11 Aug
Porter Airlines Logo
3:55 p.m. - 9:48 p.m.
BOS
-
YTZ
5h 53m
1 stop
Porter Airlines Logo
1:35 p.m. - 3:15 p.m.
YTZ
-
BOS
1h 40mdirect
C$ 285Porter Airlines
Wed, 23 Sep - Wed, 30 Sep
Air Canada Logo
5:50 a.m. - 12:33 p.m.
BOS
-
YYZ
6h 43m
1 stop
Air Canada Logo
8:55 p.m. - 10:40 p.m.
YYZ
-
BOS
1h 45mdirect
C$ 287Air Canada
Mon, 20 Jul - Sat, 25 Jul
Porter Airlines Logo
8:30 p.m. - 10:19 p.m.
BOS
-
YTZ
1h 49mdirect
Porter Airlines Logo
3:05 p.m. - 4:44 p.m.
YTZ
-
BOS
1h 39mdirect
C$ 287Porter Airlines
Fri, 11 Sep - Mon, 14 Sep
Porter Airlines Logo
7:30 p.m. - 9:25 p.m.
BOS
-
YYZ
1h 55mdirect
Porter Airlines Logo
4:55 p.m. - 6:35 p.m.
YYZ
-
BOS
1h 40mdirect
C$ 288Porter Airlines
Tue, 4 Aug - Sat, 15 Aug
Porter Airlines Logo
11:10 a.m. - 12:57 p.m.
BOS
-
YTZ
1h 47mdirect
Porter Airlines Logo
1:35 p.m. - 3:15 p.m.
YTZ
-
BOS
1h 40mdirect
C$ 288Porter Airlines
Tue, 22 Sep - Sun, 27 Sep
Porter Airlines Logo
3:55 p.m. - 10:04 p.m.
BOS
-
YYZ
6h 09m
1 stop
Porter Airlines Logo
7:25 a.m. - 9:05 a.m.
YYZ
-
BOS
1h 40mdirect
C$ 290Porter Airlines
Sun, 16 Aug - Sun, 23 Aug
Multiple Airlines Logo
10:05 a.m. - 6:28 p.m.
BOS
-
YQT
8h 23m
1 stop
Multiple Airlines Logo
10:10 a.m. - 8:55 p.m.
YQT
-
BOS
10h 45m
2 stops
C$ 632Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to Ontario flights

Get data-powered insights and trends into flights from Boston to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boston to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Region of Ontario departing in September.

What is the cheapest Boston to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ontario from Boston found in the last 5 days was to Toronto, at C$ 147 round-trip. The most popular route is from Boston (BOS) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 5 days was C$ 147.

What is the cheapest time of day to fly to Ontario?

The average price for all round-trip flights from Boston to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ontario is generally at night, when round-trip flights cost C$ 415 on average. Morning departures are around 25% cheaper than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the evening, which is peak travel time and where the average cost of a ticket is C$ 583.

Can I save money by flying with a layover from Boston to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at C$ 367 on average.

What is the cheapest month to fly from Boston to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Ontario is December, when tickets cost C$ 165 (return) on average. On the other hand, the most expensive months are March and February, when the average cost of round-trip tickets is C$ 2,315 and C$ 1,077 respectively.

What’s the cheapest day of the week to fly from Boston to Ontario?

The average price of all round-trip flights from Boston to Ontario clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to Ontario, look for departures on Tuesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Ontario, Thursday is the cheapest day to fly and Tuesday is the most expensive.

How far in advance should I book a flight from Boston to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Boston to Ontario, you should book around 4 weeks before departure, which saves you about 53% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flightC$ 139
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (14% more expensive on average)
Flight from Boston to Montreal

FAQs - booking Ontario flights

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

    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 Boston to Ontario.

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

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

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

    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 from Boston to Ontario with an airline and back with another airline.

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

    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 from Boston to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ontario

  • Looking for a cheap flight? 25% of our users found tickets from Boston to the following destinations at these prices or less: Toronto C$ 169 one-way - C$ 344 round-trip; Montreal C$ 233 one-way - C$ 321 round-trip; Toronto C$ 211 one-way - C$ 336 round-trip

Reviews of the top airlines flying from Boston to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Boston to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Porter AirlinesOverall score based on 442 reviews
8.2Boarding
7.9Comfort
7.5Food
8.6Crew
6.9Entertainment
Airline reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

6.0 GoodHarsh, Apr 2026
JFK - YYZ
Read more Porter Airlines reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

The flight booking code given by Kayak was not the correct one used by the airline. I had to call to get the correct one. It was never sent to me. Totally unacceptable!

Much roomer than air Canada! Great flight for the price. No complaints

As a first time flyer with Porter I was happy with the service and comfort of the airline.

Other than wifi no on board entertainment. Will use them again, roomier seats than other airlines and snacks and beverages, better than average

I like it, but the food isn't good. They need to offer more simple things. This bowls that have so many things your don't know what your are eating. The milenials like it, no the rest. And last but not least, they allowed somebody have a huge dog, vey agressive and fidgety in the flight. That's horrible. No animals should be allowed inside the airplane, what about allergies, etc

The flight was half empty yet they charged me $50 for a basic carry on! I saw how passengers of different colors were treated differently.

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

Porter was excellent. Boarding was a breeze. The seats were a little uncomfortably but the overall trip was excellent.

travelling in 14th of April and now we are in 17th , I have not received my lost/delayed bag... this is very bad and the worst part is their call center is not able to see where is it!!!!

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

The staff could have been friendlier. And Having the flight on time would have been much more convenient.

Hard to criticize after the Crowd Strike dilemma. However, when Air Canada says they were "not affected," I expect that is true. My flight delays caused me to miss transportation connections. I understand these things happen, but I don't have to "like it."

Not good. Flight delay. No entertainment. No screen. No food. Warm water to drink. Early in flight. Awful dirty bathrooms. More flight delays!

The original flight from Boston to Toronto was canceled because of a mechanical failure. I was then scheduled on a flight to go from Boston to Montreal and then Montreal to Toronto. The flight was extremely full and I had to check my carry-on bag. When I actually got on the plane there appeared to be room for my bag. I understand the mechanical failures happen. But it was frustrating that they pestered me to check my bag when I don't believe it was necessary. Additionally, not just with Air Canada, modern airline seats are incredibly uncomfortable. There is considerable research that shows that the shape of them is poor for back health.

New Airbus 220 with all the amenities. Not sure why hot beverages were not served as flight turned out to be very smooth…

We were delayed over six hours. It was horrible. They kept delaying the flight further every 15 minutes the whole time so we were kept in limbo.

When my plane landed in Toronto, deplaning was delayed due to terminal security issue. I had a somewhat tight connection flight to St. Vincent, and no one from Air Canada ground crew made any effort to notify my connection flight gate of the issue although I plead with several ground crew members to notify desk at departing gate.

At boarding I can’t make out what the intercom is saying at boarding.

They did a fine job. I bid on the auction and won a business class seat. Service and food were fine.

Everything you need to know for your flight from Boston to Ontario

Information on your arrival and departure airports