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Find cheap flights from Boston to Ontario from C$ 108

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 5/6. 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
0 bags
Wed 12/6
Wed 19/6

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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 stopsC$ 290
Ottawa
OttawadirectC$ 391
Thunder Bay
Thunder Bay1 stopC$ 521
Windsor
Windsor1 stopC$ 774

Good to know

Low season

January

High season

August

Cheapest flight

C$ 108
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (16% more expensive 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 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

  • Looking for a cheap flight? 25% of our users found tickets from Boston to the following destinations at these prices or less: Toronto C$ 184 one-way - C$ 370 round-trip; Montreal C$ 266 one-way - C$ 470 round-trip; Toronto C$ 208 one-way - C$ 465 round-trip
  • Morning departure is around 23% 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 10736 reviews
8.2Boarding
7.4Food
7.9Comfort
8.0Entertainment
8.6Crew
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

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

Great flight, comfort, and staff. Prefer tv in back of seat but watching on phone will do

Pros: "Friendly staff and the support they offered to my mother who needed a wheelchair."
Cons: "I would have liked to have had WestJet internet and entertainment access. It was not offered on our flight from Toronto to Fredericton."
Pros: "The fact that military personnel and retired military personnel and their spouse can check in luggage for free. The check in crew was also very courteous."
Pros: "It ran on time. The pilot landed the plane without a big jolt. We could board and deplane using 2 exits."
Cons: "Seat space"
Pros: "Rotten stuff cancels out the good doesn't it. Be great if you could take some courses from Stephen Covey as you are missing some skills sets in hospitality. And stop being so cheap with the 3rd rate old old movies!"
Cons: "I did not appreciate having the second row to the last on my 2nd plane coming back - I only had a turn around time of 20 minutes to catch my third Westjet flight. When we asked if the plane would wait for us - your crew just laughed in our faces."
Pros: "Great, friendly crew in this scenic trip across to Victoria. Nice new aircraft operating this route."
Pros: "Cheerfulness of WestJet employees."
Cons: "Seat comfort; seats hard. Person next to me average size but still spilled into my seat with “man-spreading” and shoulders."
Pros: "Efficient crew and reasonable seating"
Cons: "Need more legroom or a device to fold passenger legs for the flight duration..."
Pros: "Crew was good. Seats need to be updated and are confining. I appreciated being able to disembark through front and rear door."
Cons: "More space between the seats."
Pros: "the crew was very polite but the flight was too short to have a meal"
Cons: "delayed embarking"

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.

They stuck us with multiple extra fees. I will never fly spirit again

Arrived 3 hours early and never made it past baggage drop

Flight delayed then canceled! I will NEVER fly Spirit Airlines again and will tell all my friends!

Absolutely terrible. The boarding process had zero organization. Mobs of people trying to board. People were climbing over my child's stroller with her in it. No families were boarded first. Boarding was delayed with no reasoning or notification that it would be late. We were then stuck on the plane for 45 minutes after landing. Then waited over two hours for our luggage. There was zero communication with the travelers. Never have I experienced such I professionalism and disgrace of others. Extremely disappointed.

For it to have left on time! Instead of two hours early with zero notice

Flight kept delayed from morning to late afternoon so I had to make other arrangements

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

Terrible… missed our flight due to ridiculously long time to go thru baggage check-in!

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.

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

I fly Frontier because it’s affordable. I understand that the seats are tight and not the most comfortable…but that’s part of it. The problem with this flight was that there was a group of travelers directly behind me at the back of the plane who were ridiculously loud and obnoxious the entire flight. I’m pretty sure they were drunk and I could periodically smell an odd odor that I believe was one of them using a smokeless vape pen. The stewards had to remind them to keep quiet during the pre-flight instruction, but that was it. They never said another thing to them for the rest of the flight. It was a miserable.

I checked a bag because it was $5 less than carry on. They managed to lose my bag on a 2.5 hr direct flight! Frontier has no airport staff at baggage claim to help. As soon as I got home around 11 pm I tried to use their online system to file the claim for lost bag - system wouldn't take the # on my baggage claim ticket - said it was not the correct number. Also said that I had not checked a bag, which wasn't true - even my online boarding pass showed that I had checked a bag. Wasted about an hour on that process with no luck. Tried again in the morning - same thing. So tried online chat with Frontier bot - waited 35-40" twice to be connected to a baggage agent and it never happened. Eventually drove to PDX after work and waited 2 hrs for the Frontier ticket agents to arrive prior to the next Frontier flight out of PDX and FINALLY got some help from one of them, to take me to lost luggage area where I was able to retrive my bag. Probably took 4-5 hrs. of my time and endless frustration to get my bag. This was my first -- and LAST -- experience flying Frontier Airlines. Check-in was also extremely difficult and time consuming. The flight itself (and staff) were fine but everything else about the experience was a total disaster! The fact that Frontier literally has NO WAY to connect to a human voice for customer service (in this case for lost luggage) is the WORST!!!!!

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Book cheap flights from Boston to Ontario

Recent round-trip flight deals

5/6Wed
2 stops
21h 57mBOS-YYZ
11/6Tue
1 stop
16h 38mYYZ-BOS
C$ 290
5/6Wed
2 stops
21h 57mBOS-YYZ
11/6Tue
2 stops
17h 45mYYZ-BOS
C$ 295
5/6Wed
2 stops
21h 57mBOS-YYZ
8/6Sat
1 stop
18h 09mYYZ-BOS
C$ 308
12/7Fri
directPorter Airlines
1h 53mBOS-YTZ
16/7Tue
directPorter Airlines
1h 37mYTZ-BOS
C$ 334
31/5Fri
directPorter Airlines
1h 53mBOS-YTZ
2/6Sun
directPorter Airlines
1h 37mYTZ-BOS
C$ 335
12/7Fri
directAir Canada
1h 55mBOS-YYZ
14/7Sun
directAir Canada
1h 44mYYZ-BOS
C$ 399
28/5Tue
1 stopUnited Airlines
6h 35mBOS-YYZ
28/5Tue
1 stopUnited Airlines
12h 24mYYZ-BOS
C$ 402
30/5Thu
1 stopLufthansa
4h 19mBOS-YYZ
2/6Sun
directLufthansa
1h 43mYYZ-BOS
C$ 405
31/5Fri
1 stopAir Canada
5h 26mBOS-YYZ
2/6Sun
directAir Canada
1h 43mYYZ-BOS
C$ 406
23/6Sun
1 stopUnited Airlines
5h 44mBOS-YYZ
29/6Sat
1 stopUnited Airlines
4h 45mYYZ-BOS
C$ 474

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Recent one-way flight deals

5/6Wed
2 stops
21h 57mBOS-YYZ
C$ 108
12/6Wed
2 stops
28h 30mBOS-YYZ
C$ 113
31/5Fri
directPorter Airlines
1h 53mBOS-YTZ
C$ 152
5/6Wed
1 stopPorter Airlines
5h 07mBOS-YYZ
C$ 153
7/6Fri
directAir Canada
1h 55mBOS-YYZ
C$ 161
23/7Tue
directAir Canada
1h 55mBOS-YYZ
C$ 163
8/6Sat
1 stopAmerican Airlines
9h 54mBOS-YYZ
C$ 186
26/5Sun
1 stopDelta
24h 06mBOS-YUL
C$ 211
20/7Sat
2 stopsDelta
16h 50mBOS-YYZ
C$ 217
21/6Fri
1 stopAmerican Airlines
10h 30mBOS-YUL
C$ 232

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Last minute flights from Boston to Ontario

Last minute flight, train and bus deals

18/5Sat
multi-stop
7h 27mBOS-YYZ
20/5Mon
multi-stop
28h 08mYYZ-BOS
C$ 395
18/5Sat
multi-stop
7h 27mBOS-YYZ
20/5Mon
multi-stop
11h 01mYYZ-BOS
C$ 396
18/5Sat
directPorter Airlines
1h 53mBOS-YTZ
20/5Mon
directPorter Airlines
1h 37mYTZ-BOS
C$ 533
18/5Sat
directPorter Airlines
1h 53mBOS-YTZ
19/5Sun
directPorter Airlines
1h 37mYTZ-BOS
C$ 585
18/5Sat
multi-stopDelta
7h 21mBOS-YUL
21/5Tue
multi-stopDelta
7h 27mYUL-BOS
C$ 647
18/5Sat
directAir Canada
1h 55mBOS-YYZ
20/5Mon
directAir Canada
1h 43mYYZ-BOS
C$ 688
18/5Sat
directAir Canada
1h 55mBOS-YYZ
19/5Sun
directAir Canada
1h 40mYYZ-BOS
C$ 741
16/5Thu
multi-stopDelta
7h 37mBOS-YYZ
23/5Thu
multi-stopDelta
4h 55mYYZ-BOS
C$ 779
17/5Fri
multi-stopAmerican Airlines
8h 01mBOS-YYZ
24/5Fri
multi-stopAmerican Airlines
4h 09mYYZ-BOS
C$ 822
16/5Thu
multi-stopAmerican Airlines
8h 40mBOS-YYZ
21/5Tue
multi-stopAmerican Airlines
5h 31mYYZ-BOS
C$ 849

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Boston - Ontario Flights

Departure:

Boston (BOS)United States

Return flight deals:

Ontario - Boston

Cabin classes:

C$ 196