C$ 144 Find Cheap Flights from Boston to Ontario

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 2/6. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Ontario, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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$ 295
Ottawa
OttawadirectC$ 488
Thunder Bay
Thunder Bay1 stopC$ 767
Windsor
Windsor1 stopC$ 765
Toronto
TorontodirectC$ 295
Ottawa
OttawadirectC$ 488
Thunder Bay
Thunder Bay1 stopC$ 767
Windsor
Windsor1 stopC$ 765

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

Sun, 14 Jun - Thu, 18 Jun
Air Canada Logo
5:50 a.m. - 7:15 a.m.
BOS
-
YUL
1h 25mdirect
Air Canada Logo
8:25 a.m. - 9:50 a.m.
YUL
-
BOS
1h 25mdirect
C$ 267Air Canada
Fri, 5 Jun - Mon, 8 Jun
Air Canada Logo
10:35 a.m. - 11:53 a.m.
BOS
-
YUL
1h 18mdirect
Air Canada Logo
1:10 p.m. - 2:47 p.m.
YUL
-
BOS
1h 37mdirect
C$ 268Air Canada
Sat, 30 May - Sun, 31 May
Air Canada Logo
3:40 p.m. - 5:13 p.m.
BOS
-
YUL
1h 33mdirect
Air Canada Logo
8:20 a.m. - 9:45 a.m.
YUL
-
BOS
1h 25mdirect
C$ 269Air Canada
Fri, 29 May - Sun, 31 May
Porter Airlines Logo
4:45 p.m. - 6:15 p.m.
BOS
-
YUL
1h 30mdirect
Porter Airlines Logo
7:20 p.m. - 8:55 p.m.
YUL
-
BOS
1h 35mdirect
C$ 272Porter Airlines
Fri, 29 May - Sun, 31 May
Air Canada Logo
3:40 p.m. - 5:13 p.m.
BOS
-
YUL
1h 33mdirect
Air Canada Logo
8:20 a.m. - 9:45 a.m.
YUL
-
BOS
1h 25mdirect
C$ 273Air Canada
Fri, 29 May - Sun, 31 May
Porter Airlines Logo
4:45 p.m. - 6:15 p.m.
BOS
-
YUL
1h 30mdirect
Porter Airlines Logo
7:20 p.m. - 8:55 p.m.
YUL
-
BOS
1h 35mdirect
C$ 276Porter Airlines
Sun, 14 Jun - Thu, 18 Jun
Air Canada Logo
5:10 a.m. - 10:21 a.m.
BOS
-
YUL
5h 11m
1 stop
Air Canada Logo
8:25 a.m. - 9:50 a.m.
YUL
-
BOS
1h 25mdirect
C$ 279Air Canada
Fri, 29 May - Sun, 31 May
Multiple Airlines Logo
5:10 a.m. - 10:21 a.m.
BOS
-
YUL
5h 11m
1 stop
Multiple Airlines Logo
7:20 p.m. - 8:55 p.m.
YUL
-
BOS
1h 35mdirect
C$ 287Multiple Airlines
Fri, 12 Jun - Sun, 14 Jun
Porter Airlines Logo
10:05 a.m. - 5:02 p.m.
BOS
-
YUL
6h 57m
1 stop
Porter Airlines Logo
7:20 p.m. - 8:55 p.m.
YUL
-
BOS
1h 35mdirect
C$ 288Porter Airlines
Sat, 13 Jun - Sat, 13 Jun
Porter Airlines Logo
10:05 a.m. - 12:00 p.m.
BOS
-
YYZ
1h 55mdirect
Porter Airlines Logo
3:40 p.m. - 8:55 p.m.
YYZ
-
BOS
5h 15m
1 stop
C$ 295Porter 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 June.

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 72 hours was to Toronto, at C$ 128 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 72 hours was C$ 128.

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 24% 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$ 563.

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$ 353 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 March, when tickets cost C$ 131 (return) on average. On the other hand, the most expensive months are February and January, when the average cost of round-trip tickets is C$ 1,010 and C$ 1,000 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 Sundays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from Ontario, Friday is the cheapest day to fly and Wednesday 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 51% 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$ 144
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Boston to Toronto Pearson Airport

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$ 135 one-way - C$ 315 round-trip; Montreal C$ 181 one-way - C$ 379 round-trip; Toronto C$ 168 one-way - C$ 157 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.
8.0
Porter AirlinesOverall score based on 437 reviews
7.0Entertainment
7.6Food
8.6Crew
8.0Comfort
8.2Boarding
Airline reviews

The staff was amazing. Best service I’ve had on an aircraft in a long time. Was not particularly happy with the food. Flight was at 10:50 and left home too early for breakfast and wasn’t able to purchase food at airport and felt for sure I could get some breakfast to buy on airplane. Nope as food was served around 11:30 and only one choice left (I was at 22C) so ordered the chicken dish thinking I’m getting a hot meal but cold chicken with rice and carrots etc. I was looking forward to a croissant sandwich and a hot cup of tea. The FA was kind to explain they were serving dinner at that time. She was lovely Other than the disappointment with the food the staff was amazing. On my return flight I will make sure to eat and take some food with me so I’m not hungry or disappointed. This was my second time ever flying Porter and will consider checking them when I next come to visit my daughter. Have to say it again best crew I’ve ever experienced on a flight and I travel quite a bit. Thanks.

10.0 ExcellentAngela, May 2026
YYZ - YVR
Read more Porter Airlines reviews

The staff was amazing. Best service I’ve had on an aircraft in a long time. Was not particularly happy with the food. Flight was at 10:50 and left home too early for breakfast and wasn’t able to purchase food at airport and felt for sure I could get some breakfast to buy on airplane. Nope as food was served around 11:30 and only one choice left (I was at 22C) so ordered the chicken dish thinking I’m getting a hot meal but cold chicken with rice and carrots etc. I was looking forward to a croissant sandwich and a hot cup of tea. The FA was kind to explain they were serving dinner at that time. She was lovely Other than the disappointment with the food the staff was amazing. On my return flight I will make sure to eat and take some food with me so I’m not hungry or disappointed. This was my second time ever flying Porter and will consider checking them when I next come to visit my daughter. Have to say it again best crew I’ve ever experienced on a flight and I travel quite a bit. Thanks.

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..

I didn’t receive any help when they messed up and wasn’t honest and the supervisor did absolutely nothing to help me so I had to buy another ticket at $537

There was No Flight. Both Kayak and Porter refused to honor my booking. I was asked for an additional 1,300 $ CAD to keep the flight. After several emails to both Kayak and Porter I was ignored. I had to cancel my March spring break plans, dog kennel and hotel. I had to re-book another vacation to Nassau in January w Expedia. I had to re-book a new vacation for spring break. Porter and Kayak both blamed each other and would not work together to fix this. Not cool.

Even tho the flight was a bit delayed the team was apologetic. Everyone was friendly and efficient.

The flight was a little delayed but check in was easy and boarding was quick. Luggage was quickly available and everything worked great.

The Flight took off 2hrs late because there was no pilot showing up when the flight was ready to board.. Though the cabin crew was present and had prepared the plane, the FO turned around after 15 min and went away. A crew to fly the plane finally arrived over an hour later and we were able to board 1h30 min later than planned time... until everything was loaded, we left 2h late from the gate. This was a small plane, so don't expect any Entertainment... Wi-Fi access on board would work, but took an awful amount of time to figure out and get it work (I'm an IT person). Flying as VIPorter customer, I was expecting at least some warm meal, but everything served was just cold.. except the coffee maybe. Even in so-called VIPorter seats, space is cramped and trays are so tiny, you can barely setup your food. Flight caught up during the coast-to-coast crossing and was able to recoup about 45 min from the delay.. still arrived very late in Vancouver and had to wait a long time to get our registered bags. Let's see how the return flight will be in a few days..

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!

Due to a known technical error that Porter has not fixed in over a year, I was unable to check in the children on my reservation online and had to do it at the airport. Upon check in, there were no seats together, which was an issue as we had young children. The gate agent did manage to seat us together by moving other passengers, which was appreciated, but the other passengers were never informed, leading to confusion and delay upon boarding. The flight was over an hour late; no explanation or apology was ever issued. The bags on Porter take a long time to arrive--over half an hour at Hamilton on my inbound flight, and not much better on my return to Edmonton.

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

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

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

Information on your arrival and departure airports