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Find cheap flights from Boston to Ontario from $48

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 5/11. 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
0 bags
Mon 6/3
Mon 6/10

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Best Ontario Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Toronto
Toronto2 stops$216
Ottawa
Ottawanonstop$299
London
London1 stop$504
Windsor
Windsor1 stop$700

Good to know

Low season

January

High season

August

Cheapest flight

$48
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 13% increase in price.
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 to Ontario from Boston 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 to Ontario with an airline and back to Boston 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 to Ontario from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Morning departure is around 25% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Boston to Ontario

 
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
DeltaOverall score based on 10838 reviews
8.0Entertainment
8.2Boarding
8.6Crew
7.9Comfort
7.4Food
Airline reviews

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

10.0 ExcellentAllan, May 2024SUN - SLC
Read more about Delta reviews

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

They did a fine job. Can't wait to use Delta in the future.

Seats in first class on the E175 recline too far back. I was in 2A, and the man in 1A fully reclined almost the entire flight. It took 6-7 inches of space away from me and made it very difficult to work on my laptop.

Mario was great. Made a night flight on a small aircraft pleasant and memorable.

Crew were exceptional. Plane was quiet and quite empty, so I had a row to sleep across.

The seat could use more support or cushion. I'm in my 50's and have back issues so the seats are a bit hard for longer flights.

The plane was in bad condition. We were taxied for mode than an hour because a light panel had feel off. The bathroom in first class had broken panels as well. Overall poor aircraft maintenance

Airline stewardess service is good. The check-in attendant had a bad attitude and was unprofessional. We did not complete the trip as originally planned. Very dissatisfied☹️ We didn't get on this flight

My only real complaint was how much turbulence there was-and that probably can't be avoided. I felt really sick getting off the plane. But boarding was super easy, the flight attendants were friendly, the bathroom was clean. Everything else about the flight was perfectly fine. Thanks!

The overall flight went well and the aircrew was pleasant.

Cathay Pacific seems to be an airline in trouble and on its way out. Lots of broken or poorly functioning things like entertainment screens, seats, and enough well trained staff to handle a full flight. Sad...

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Excellent. Planes are a little older and could get some refurbishment, but besides that everything was excellent.

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

My seat was sold off to someone else. Had to wait 9 hours to catch the next filght. Definitely will never use Cathay Pacific again. Bad, very bad airline. will comment on google reviews too.

Seats were very comfortable. Crew were excellent. Food very good.

Flight crew was especially thoughtful and attentive, made sure our seats were comfortable so we could rest on the long flight

One of the worst flight in business class by qatar airways and I’m no stranger with qatar airways businesses class, I travelled with the extensively in the past 12 years

I had back trouble prior to my flight and everyone was great about helping me.

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

Always delays from Boston to Salt lake but this time was very long. Don’t understand while they board the passengers and then make them sit in the plane

The boarding and flight were ok, but there were several painful issues. The flight was 3:20 in the air and almost four hours door to door, but they only had snack packs on the plane. They really need to have food on longer flights or make it clear to everyone that they won’t have food. They also advertise free WiFi, but it did not work for 90% of this flight. Again, almost four hours door to door. If I had known I was flying spirit for JetBlue prices then I would have planned differently.

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

Old plane. No outlets for laptop or phone. Seats worn out. Area around seat dirty.

I loved the flight and the crew. It was comfortable and smooth.

The crew was openly hostile and condescending to the customers. They spent the majority of that time in the rear talking and seemed really agitated when people asked questions. I heard five different people told that the information they requested was in the handout or safety brief.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

WiFi connected but only let you go to the AA website, not even text messaging worked.

Too bad that first class seats do not recline significantly causing discomfort

delayed delayed delayed. was supposed to have a 2 hour layover and very nearly missed my connection.

Despite a bumpy flight the pilot was great. The rest of the crew on the other hand couldn’t care less if a passenger would colapse and die. Horrible service, robot like, lifeless…

The crew was not great or professional. It seemed like they didn't really want to be there. A true lack of effort for accommodating customers.

Everything was really good but the seats are not very comfortable.

I paid for WiFi, but it (WiFi) was very very slow, will never take again! Impossible open Utube 😤😤😤

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

The boarding attendant was slightly rude when I asked about checking our stroller. Made me feel like I was bothering her.

My wife and I are both handicapped and at boarding they upgraded us to a seat closer to the front rather than all the way towards the back. Much appreciated.

Not much seat room, but that was unexpected. But the seat headrest was very uncomfortable.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries.

Book cheap flights from Boston to Ontario

Recent round-trip flight deals

6/5Wed
2 stops
28h 30mBOS-YYZ
6/8Sat
1 stop
18h 09mYYZ-BOS
$216
5/18Sat
1 stop
7h 27mBOS-YYZ
5/19Sun
1 stop
3h 40mYYZ-BOS
$225
5/30Thu
1 stop
8h 07mBOS-YYZ
6/3Mon
1 stop
15h 44mYYZ-BOS
$228
6/13Thu
nonstopAir Canada
1h 55mBOS-YYZ
6/25Tue
nonstopAir Canada
1h 44mYYZ-BOS
$301
6/16Sun
1 stopAir Canada
4h 36mBOS-YYZ
6/20Thu
nonstopAir Canada
1h 44mYYZ-BOS
$306
6/3Mon
1 stopAmerican Airlines
4h 55mBOS-YYZ
6/3Mon
1 stopAmerican Airlines
5h 31mYYZ-BOS
$340
5/17Fri
1 stopAmerican Airlines
4h 55mBOS-YYZ
5/19Sun
1 stopAmerican Airlines
4h 09mYYZ-BOS
$350
8/10Sat
nonstopUnited Airlines
1h 55mBOS-YYZ
8/26Mon
1 stopUnited Airlines
5h 44mYYZ-BOS
$368
8/13Tue
1 stopDelta
7h 45mBOS-YYZ
8/23Fri
1 stopDelta
9h 02mYYZ-BOS
$374
5/16Thu
1 stopDelta
4h 37mBOS-YYZ
5/19Sun
1 stopDelta
6h 16mYYZ-BOS
$378

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Recent one-way flight deals

5/11Sat
1 stop
7h 27mBOS-YYZ
$48
5/11Sat
1 stop
7h 27mBOS-YYZ
$53
5/25Sat
nonstopAir Canada
1h 55mBOS-YYZ
$126
6/2Sun
nonstopAir Canada
1h 55mBOS-YYZ
$130
7/23Tue
1 stopDelta
7h 58mBOS-YYZ
$153
6/23Sun
1 stopDelta
8h 48mBOS-YYZ
$224
10/7Mon
2 stopsUnited Airlines
14h 53mBOS-YYZ
$231
5/24Fri
nonstopUnited Airlines
1h 57mBOS-YYZ
$250
5/24Fri
2 stopsAmerican Airlines
17h 45mBOS-YYZ
$378
5/24Fri
2 stopsAmerican Airlines
8h 00mBOS-YYZ
$412

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Last minute flights from Boston to Ontario

Last minute flight, train and bus deals

5/8Wed
multi-stop
22h 36mBOS-YYZ
5/10Fri
multi-stop
11h 01mYYZ-BOS
$369
5/9Thu
multi-stop
8h 07mBOS-YYZ
5/14Tue
multi-stop
17h 17mYYZ-BOS
$370
5/8Wed
multi-stop
22h 36mBOS-YYZ
5/15Wed
multi-stop
16h 56mYYZ-BOS
$371
5/9Thu
multi-stopAmerican Airlines
8h 40mBOS-YYZ
5/28Tue
multi-stopAmerican Airlines
6h 24mYYZ-BOS
$547
5/9Thu
nonstopAir Canada
1h 55mBOS-YYZ
5/28Tue
nonstopAir Canada
1h 43mYYZ-BOS
$563
5/9Thu
multi-stopAir Canada
4h 26mBOS-YYZ
5/28Tue
nonstopAir Canada
1h 43mYYZ-BOS
$568
5/8Wed
multi-stopDelta
8h 59mBOS-YYZ
5/15Wed
multi-stopDelta
4h 12mYYZ-BOS
$570
5/9Thu
multi-stopAmerican Airlines
8h 40mBOS-YYZ
5/13Mon
multi-stopAmerican Airlines
6h 28mYYZ-BOS
$601
5/8Wed
multi-stopDelta
3h 37mBOS-YYZ
5/10Fri
multi-stopDelta
4h 12mYYZ-BOS
$674
5/5Sun
multi-stopUnited Airlines
4h 19mBOS-YYZ
5/5Sun
multi-stopUnited Airlines
6h 08mYYZ-BOS
$898

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Boston - Ontario Flights

Departure:

Boston (BOS)United States

Return flight deals:

Ontario - Boston

Cabin classes:

$738
$577
$152