$82 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 10/3. 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

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Ontario.
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Best Ontario Flight Deals from Boston

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Toronto
Toronto1 stop$184
Ottawa
Ottawanonstop$264
London
London1 stop$417
Windsor
Windsor2 stops$527
Toronto
Toronto1 stop$184
Ottawa
Ottawanonstop$264
London
London1 stop$417
Windsor
Windsor2 stops$527

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

Thu, Sep 18 - Mon, Sep 22
Porter Airlines Logo
3:30 pm - 7:03 pmBOS-YTZ
3h 33m1 stop
Porter Airlines Logo
3:10 pm - 4:51 pmYTZ-BOS
1h 41mnonstop
$184Porter Airlines
Find Deal
Wed, Oct 1 - Mon, Oct 13
Porter Airlines Logo
12:15 pm - 2:04 pmBOS-YTZ
1h 49mnonstop
Porter Airlines Logo
8:20 pm - 10:01 pmYTZ-BOS
1h 41mnonstop
$185Porter Airlines
Find Deal
Sat, Sep 6 - Mon, Sep 8
Air Canada Logo
6:00 am - 7:56 amBOS-YYZ
1h 56mnonstop
Air Canada Logo
9:45 am - 11:29 amYYZ-BOS
1h 44mnonstop
$201Air Canada
Find Deal
Sat, Sep 6 - Mon, Sep 8
Air Canada Logo
10:40 am - 12:35 pmBOS-YYZ
1h 55mnonstop
Air Canada Logo
9:45 am - 11:29 amYYZ-BOS
1h 44mnonstop
$203Air Canada
Find Deal
Sat, Sep 6 - Mon, Sep 8
 Logo
6:45 pm - 8:34 pmBOS-YTZ
1h 49mnonstop
 Logo
12:25 pm - 5:55 pmYTZ-BOS
5h 30m1 stop
Sat, Sep 6 - Mon, Sep 8
 Logo
6:45 pm - 8:34 pmBOS-YTZ
1h 49mnonstop
 Logo
12:25 pm - 5:55 pmYTZ-BOS
5h 30m1 stop
Sat, Sep 20 - Sun, Sep 28
United Airlines Logo
9:30 am - 2:19 pmBOS-YYZ
4h 49m1 stop
United Airlines Logo
10:45 am - 3:09 pmYYZ-BOS
4h 24m1 stop
$257United Airlines
Find Deal
Fri, Oct 17 - Sun, Oct 19
WestJet Logo
6:30 pm - 5:12 amBOS-YXU
10h 42m1 stop
WestJet Logo
6:00 am - 5:40 pmYXU-BOS
11h 40m1 stop
$417WestJet
Find Deal
Sat, Aug 30 - Sat, Sep 6
WestJet Logo
6:30 pm - 5:14 amBOS-YXU
10h 44m1 stop
WestJet Logo
8:00 pm - 5:40 pmYXU-BOS
21h 40m1 stop
$786WestJet
Find Deal
Sat, Aug 30 - Sat, Sep 6
United Airlines Logo
10:40 am - 3:02 pmBOS-YXU
4h 22m1 stop
United Airlines Logo
6:15 am - 9:55 amYXU-BOS
3h 40m1 stop
$794United Airlines
Find Deal
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.

What is the cheapest Boston to Ontario flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Boston to Ontario.

The cheapest ticket to Ontario from Boston found in the last 72 hours was to Ottawa, at $122 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 $220.

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 $474 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 $285 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is $412 and $364 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.

When flying from Boston to Ontario, you should consider leaving on a Thursday and avoid Saturdays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Thursdays and the most expensive ones on Tuesdays.

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 the flight from Boston to Ontario, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.


Good to know

Low seasonJanuary
High seasonNovember
Cheapest flight$82
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 37% increase in price.
Flight from Boston to Toronto Island

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 travelers 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.

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

    The cheapest time of day to fly to Ontario is generally in the afternoon, when round-trip flights cost $363 on average. Morning departures are around 8% 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 $479.

Reviews of the top 5 airlines serving 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 311 reviews
8.2Boarding
8.1Comfort
8.7Crew
7.0Entertainment
7.6Food
Airline reviews

Seemed like an old plane. Very noisy. The seat cushions were so old that the metal bracing of the seats were poking through. There was plenty of leg room though.

6.0 GoodRobert, Jul 2025YQB - YTZ
Read more Porter Airlines reviews

Seemed like an old plane. Very noisy. The seat cushions were so old that the metal bracing of the seats were poking through. There was plenty of leg room though.

Flight was delayed over 2 hours, then landed at a different airport!

The whole experience from check in to deboarding was fantastic.

Just an evening before they canceled my ticket and offered me ticket costing 3 x times more than. I will not fall prey to these scams,Will never book through kayak now. Such a bad experience.

was okay except.. 1)the porter check in webpage doesn't let you print your boarding pass from home 2)that there was a 90 min cut off for checking in on the kiosk in general, and to print a boarding pass, even tho i checked in online already....

Great! Personable crew. I love that they pour complimentary beer and wine.

I love the 2 seats per row. More room. The crew were excellent.

It was amazing although they did bump us up to the front which gave us more leg room and a meal. The service was great! The staff were friendly. :)

Overall very good... staff were friendly and helpful. boarding was good for the most part, but a little hard to get our carry-on bags on there.... I think people should be directed to keep their coats and small bags with them until all the carry-ons are loaded, and then, if there is space, they can put their small bags and coats up top.. makes it much easier to put baggage up. i loved the internet feature, but the entertainment was not there unless you have your own Netflix or similar platform. My chair did not recline, which was very annoying, and the arms won't go up near the isle, which makes it tough to get in and out of the seat.

Staff were excellant. Only snacks served. Some turbulence so we were offered Free beer or wine.

Not so much porter it's your site! Not good

They are a sister company with Air Transat and the two companies do not work well together. If you have any issues the two companies will blame each other and you will miss your flights. The help line does not help

Never book through a third party. Book through Air transats website. Terrible process to get help and many issues happen with them and sister companies because half the flights you book with them aren’t even through air transat.

The plane was pretty full, and we dis not have any includes meal for our 4h30 flight? And on-board entertainment wasn't available, there was no TV or plugging to charger your device on the plane. They told us to download an app if we wanted to watch movies but it never connected, that was a disappointment, the r we st was very good though and the crew were really nice!

Seats were very tight especially for first leg of trip.

Not necessarily a Transat issue but it took 2 hours to go through immigration. Tried to reach out to Transat for resolution but was unable to reach an agent.

The flight was excellent, once it started, however we were delayed two hours when the first plane’s engines wouldn’t start. They found another identical plane and transferred us and our luggage in under two hours and made up almost an hour in the air.

Really low cost trip for the huge amount I paid…o paid 550 dollars just for the trip, one way trip, plus 95 for 1 luggage’s and the second 135 dollars…no blanket, not headphones for entertainment, food was served after 3 hours and 2 hours after, breakfast was served Bad, low cost company for high prices

The flight and crew were good. Departure and arrival were timely. Check-in was professional and helpful in Malaga on return trip (same on outbound trip from Toronto). The ad before ach program was punishing - specifically for the internet/data service with the content creator that was showed twice in each ad pod. It was so annoying I made an effort to forget the name and would not use the service. Provide an opportunity to fast forward or skip the darn ads once they have been initially viewed.

Extra attention to kids, thank you, we appreciate! Perfect landing

Flight was actually on Air Canada. The flight itself was fine. Nothing special. Food was pretty pathetic except for cookies. They offered plenty of food and drinks but just wasn't very good. Even for airline food.

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Delay and keep changing gates. I have to run around from B to C then to E.

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

My suitcase was completed destroyed. The top part is broken and unusable now.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

I didn't like that my paid for seat was changed 2 hours before my flight.

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

Bad experience boarding and flight got delayed didn’t make it to my next flight

The food on the trip Toronto to Athens could be better: the chicken didn’t taste good.

Conflicting information provided about baggage allowance. One screen said I had a carry on and another said I didnt.

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

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

Information on your arrival and departure airports

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