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Find cheap flights from Boston to Ontario from $53

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 5/18. 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
Tue 5/28
Tue 6/4

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Best Ontario Flight Deals

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

Toronto
Toronto1 stop$226
Ottawa
Ottawanonstop$312
Thunder Bay
Thunder Bay1 stop$477
London
London1 stop$541
Windsor
Windsor1 stop$594

Good to know

Low season

January

High season

August

Cheapest flight

$53
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 10% 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 3% 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 10932 reviews
8.6crew
8.0entertainment
8.2boarding
7.4food
7.9comfort
Airline reviews

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

10.0 ExcellentRobert, Apr 2024BOS - RSW
Read more about Delta reviews

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!

Crew was wonderful, very professional and pleasant. On time performance. Excellent flights,smooth. Thank you!

Caroline (Supervisor) was great! Salute to the employees like her!

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

The crew were fine. I didn’t enjoy the food at all. I found it unappetising and really had trouble eating it. The comfort level was fine and our return flight is with Cathay Pacific but honestly I probably wouldn’t fly Cathay Pacific again.

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.

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

I think the seats on some of their planes are uncomfortable. You can be ok on a short flight of two hours but no more than that. The delays, and also the refreshments on the plane were not enough.

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

this is starting to seem like an american airlines standard. delayed flights and fake apologies… getting tired of it

Terrible boarding , Business class seats are sub standard. As usual crew will miss your food too

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

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…

No service due to turbulence. No entertainment on this type of aircraft. But nice old comfortable seats.

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.

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. They dont really bother you about carry-on size, I brought a descent sized backpack and they didnt even check.

Spirit canceled the flight in March and never notified me!

Seats suck, not enough room, overcrowded planes, hectic situation all together.

Pretty good. Would’ve been excellent if we would have left on time and the crew wasn’t late.

I do not like the customer service, I had an emergency and needed to cancel a pet reservation right after I had booked it and they would not do anything but issue a credit. I haven't flown in years as I have 7 kids and don't have spare time. I want my $125 back on my card please

Spirit airline tries to screw you at every opportunity. Spirit wanted 65$ for an extra pound in the suitcase Made me open the suitcase at the counter to remove 1 pound. Staff very cold and rude Will never fly spirit again and will recommend same to family and friends

Delayed..4 times...completely disorganized boarding. After 5 hours they scrambled to move ppl off plane bc they overbooked. Then they didn't have a cabin crew. WiFi on plane didn't work. Zero amenities. Once we boarded we sat on tarmac for an hour. Explore all alternate options including purchasing a pair of hiking boots and walking to your destination instead of flying spirit.

Book cheap flights from Boston to Ontario

Recent round-trip flight deals

5/11Sat
1 stop
7h 27mBOS-YYZ
5/12Sun
nonstop
1h 43mYYZ-BOS
$226
5/11Sat
1 stop
7h 27mBOS-YYZ
5/12Sun
1 stop
6h 21mYYZ-BOS
$231
5/11Sat
1 stop
7h 27mBOS-YYZ
5/12Sun
1 stop
3h 40mYYZ-BOS
$232
5/26Sun
1 stopPorter Airlines
3h 54mBOS-YTZ
6/2Sun
1 stopPorter Airlines
4h 45mYTZ-BOS
$254
5/25Sat
nonstopPorter Airlines
1h 53mBOS-YTZ
6/1Sat
1 stopPorter Airlines
4h 00mYTZ-BOS
$255
5/16Thu
nonstopAir Canada
1h 55mBOS-YYZ
5/19Sun
nonstopAir Canada
1h 43mYYZ-BOS
$288
5/16Thu
nonstopAir Canada
1h 55mBOS-YYZ
5/19Sun
1 stopAir Canada
6h 21mYYZ-BOS
$292
5/11Sat
nonstopLufthansa
1h 55mBOS-YYZ
5/12Sun
nonstopLufthansa
1h 43mYYZ-BOS
$306
5/31Fri
nonstopUnited Airlines
1h 55mBOS-YYZ
6/4Tue
nonstopUnited Airlines
1h 43mYYZ-BOS
$313
5/25Sat
nonstopUnited Airlines
1h 57mBOS-YYZ
5/25Sat
nonstopUnited Airlines
1h 43mYYZ-BOS
$322

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Recent one-way flight deals

5/18Sat
1 stop
7h 27mBOS-YYZ
$53
5/18Sat
1 stop
7h 27mBOS-YYZ
$54
6/5Wed
nonstopAir Canada
1h 55mBOS-YYZ
$130
5/13Mon
nonstopAir Canada
1h 55mBOS-YYZ
$134
9/18Wed
1 stopDelta
6h 37mBOS-YYZ
$162
6/6Thu
1 stopAmerican Airlines
9h 00mBOS-YYZ
$170
6/2Sun
1 stopAmerican Airlines
4h 55mBOS-YYZ
$197
8/2Fri
nonstopUnited Airlines
1h 55mBOS-YYZ
$209
8/2Fri
1 stopUnited Airlines
9h 43mBOS-YYZ
$231
5/3Fri
1 stopDelta
4h 20mBOS-YYZ
$348

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Last minute flights from Boston to Ontario

Last minute flight, train and bus deals

5/3Fri
nonstopPorter Airlines
1h 53mBOS-YTZ
5/6Mon
nonstopPorter Airlines
1h 37mYTZ-BOS
$439
5/3Fri
nonstopPorter Airlines
1h 53mBOS-YTZ
5/6Mon
multi-stopPorter Airlines
6h 25mYTZ-BOS
$444
5/1Wed
multi-stopDelta
7h 35mBOS-YYZ
5/7Tue
multi-stopDelta
8h 12mYYZ-BOS
$573
5/2Thu
multi-stopAmerican Airlines
7h 54mBOS-YYZ
5/7Tue
multi-stopAmerican Airlines
5h 00mYYZ-BOS
$612
5/2Thu
nonstopAir Canada
1h 55mBOS-YYZ
5/7Tue
nonstopAir Canada
1h 40mYYZ-BOS
$614
5/2Thu
nonstopAir Canada
1h 55mBOS-YYZ
5/9Thu
multi-stopAir Canada
6h 38mYYZ-BOS
$619
5/1Wed
multi-stopDelta
7h 35mBOS-YYZ
5/6Mon
multi-stopDelta
6h 46mYYZ-BOS
$632
5/2Thu
multi-stopAmerican Airlines
9h 54mBOS-YYZ
5/7Tue
multi-stopAmerican Airlines
4h 31mYYZ-BOS
$671
5/1Wed
nonstopUnited Airlines
1h 55mBOS-YYZ
5/7Tue
multi-stopUnited Airlines
5h 58mYYZ-BOS
$731
5/1Wed
multi-stopUnited Airlines
4h 49mBOS-YYZ
5/6Mon
nonstopUnited Airlines
1h 43mYYZ-BOS
$741

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Boston - Ontario Flights

Departure:

Boston (BOS)United States

Return flight deals:

Ontario - Boston

Cabin classes:

$738
$597
$153