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BOS - ONT

Find cheap flights from Boston to Ontario from $110

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 4/29. 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
Sat 4/27
Sat 5/4

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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.
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
11:40 am - 11:59 pmBOS-ONT
15h 19m2 stops
2:11 pm - 2:00 pmONT-BOS
20h 49m1 stop
Sat, Apr 27 - Sat, May 4
4:06 pm - 1:21 pmBOS-ONT
24h 15m1 stop
12:59 am - 4:47 pmONT-BOS
12h 48m2 stops
Tue, Apr 30 - Mon, May 6
12:53 pm - 10:09 pmBOS-ONT
12h 16m1 stop
11:40 pm - 11:43 amONT-BOS
9h 03m1 stop
$238JetBlue
Find Deal
Sat, May 4 - Tue, May 7
12:53 pm - 10:09 pmBOS-ONT
12h 16m1 stop
11:40 pm - 11:43 amONT-BOS
9h 03m1 stop
$269JetBlue
Find Deal
Thu, May 2 - Mon, May 6
1:45 pm - 8:46 pmBOS-ONT
10h 01m1 stop
11:20 am - 11:58 pmONT-BOS
9h 38m1 stop
$276Delta
Find Deal
Sat, Apr 27 - Tue, Apr 30
6:30 am - 1:53 pmBOS-ONT
10h 23m2 stops
12:50 pm - 11:58 pmONT-BOS
8h 08m1 stop
$281American Airlines
Find Deal
Sat, May 4 - Sat, May 11
10:04 am - 6:45 pmBOS-ONT
11h 41m2 stops
7:40 pm - 8:00 amONT-BOS
9h 20m2 stops
$284American Airlines
Find Deal
Tue, Apr 30 - Tue, May 7
3:20 pm - 10:57 pmBOS-ONT
10h 37m1 stop
5:40 pm - 7:00 amONT-BOS
10h 20m1 stop
$286Delta
Find Deal
Mon, Apr 29 - Sat, May 4
1:50 pm - 11:04 pmBOS-ONT
12h 14m1 stop
1:36 pm - 11:43 pmONT-BOS
7h 07m1 stop
$376United Airlines
Find Deal
Sat, Apr 27 - Sat, May 4
3:09 pm - 11:04 pmBOS-ONT
10h 55m2 stops
10:42 am - 11:49 pmONT-BOS
10h 07m1 stop
$380United Airlines
Find Deal
Sat, Apr 27 - Sat, May 4

Flights from Boston to Ontario - Travel Insights & Trends

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’s the cheapest day of the week to fly from Boston to Ontario?

The average price of all flights from Boston to Ontario clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Ontario on a Wednesday and more expensive on a Sunday. On your return trip to Boston, you should consider flying back on a Thursday, and avoid Sundays for better deals.

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 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 January, where tickets cost $288 on average. On the other hand, the most expensive months are June and April, where the average cost of tickets is $633 and $630 respectively.

How far in advance should I book a flight from Boston to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Boston to Ontario, you should book around 5 days before departure. For the absolute cheapest price, our data suggests you should book 45 days before departure.

Which airlines provide the cheapest flights from Boston to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Boston to Ontario were found on JetBlue ($238) and Delta ($276). JetBlue proposed the cheapest one-way flight at $119.

How long does a flight from Boston to Ontario take?

Flying between Ontario and Boston will take minimum 8h 02m and will require at least one stop.

Good to know

Low season

June

High season

August

Cheapest flight

$110
Best time to beat the crowds but there is an average 35% increase in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Boston to Ontario

When to book flights from Boston to Ontario

Are your dates flexible? Find out the best times to travel from Boston to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Ontario

  • What is the cheapest flight from Boston to Ontario?

    In the last 3 days, the lowest price for a flight from Boston to Ontario was $110 for a one-way ticket and $207 for a round-trip.

  • Do I need a passport to fly between Boston and Ontario?

    A passport is not required to fly from Boston to Ontario.

  • Which aircraft models fly most regularly from Boston to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Ontario?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Boston and Ontario, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Ontario from Boston?

    Phoenix is the most popular layover city among KAYAK users traveling from Boston to Ontario.

  • Which is the best airline for flights from Boston to Ontario, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to Ontario are Alaska Airlines and Delta. With an average price for the route of $171 and an overall rating of 8.1, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $427 and an overall rating of 8.0.

  • 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. Booking your flights between Boston and ONT can sometimes prove cheaper using this method.

  • 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 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 KAYAK reviews.
8.1
Alaska AirlinesOverall score based on 9127 reviews
86crew
82boarding
79comfort
81overall
73food
74entertainment
Airline reviews

Seat space Terrible. No real food on a 6 hour flight

Read more about Alaska Airlines

Seat space Terrible. No real food on a 6 hour flight

I went Premium otherwise it would have been a long wait. On board I only asked for a cup of hot water and got lukewarm. Cabin crew have poor to no service. But great flight; it went smooth.

Alaska airlines is the best. Best customer service, crew, and value for money.

Outside Sky cap would be helpful! No entertainment (TV screens)

Great no problems. Very friendly. An hour ahead of schedule

flight was canceled and we were re routed all day. had a nice weekend planed in San Diego. Plans changed and we lost a day and spent the day flying.

The reduced size overhead compartments were a surprise. They keep getting smaller and smaller while amenities keep getting fewer.

My flight was on schedule, ground crew looks overworked, flight crew was great but refreshments could be better. The plane was clean and fairly new. Seats were comfortable but leg room was tight.

I'm a tall guy. Fortunately I was able to find seating in the emergency rows that gave me a couple more inches of room. My return flight a few days later, I wasn't as fortunate. Very painfully and uncomfortable return flight.

Always reliable customer service. Especially, the extra care on a long flight back to the Mainlaind.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

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

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

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.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

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

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

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

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.

ticketing issues caused many customers to have to go back to check in after waiting in security, then go through security line again.

The seat was visibly dirty, had not been cleaned. I used my own wipes and they were dark after wiping down the chair and tray table.

For a 22 minute flight all you expect is for it to be safe and comfortable

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Over two hours wait to get wheelchair assistance from arrival to the departure gate for LA was unreasonable even though there appreared to be heavy demand.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

I was delighted that we were able to get on the 4:40 pm flight rather than our original booking at 6:55 pm!! Other than that, the flight was comfortable and landed early😊

The flight and crew were fine. The entertainment- the sound was so bad through the headphones I could barely understand it and it was a show I had seen before. The food might have been fine but having to have an account with united in order to access the app in order to pay for the food was rage inducing. I had entered my credit card info at home and logged in as guest but that wouldn’t allow the “wallet” tab to open in the app. And then the wifi was so bad that it took about 45 minutes to fully log in and get all the info working at which time I missed the food. You shouldn’t have to give your address, email and phone number in order to get a hamburger.

The control panel for the seat back screen did not work at all after takeoff.

United airline kept delaying our flight back to Phoenix for 8 hours before they cancelled it! If they know that we are not flying out for whatever the reason is, why did they keep lying to us for hours. We could find another flight earlier or even find a hotel with a shuttle. But cancellation at about midnight was not fun. We stayed in the airport all night till the following morning when we bought an Alaska tickets to go back to Phoenix. Total of 14 hours in the airport.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

The crew was nice but the people going to Orange County are so entitled. Everyone thinks everything is suppose for be perfect for them. Tough crowd.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

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

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

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…

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Poor availability of food. Cold cabin temperature. Extremely long waiting time for a flight attendant to respond to a call button signal.

2.5h delay due to unruly passenger in first class. Had to be removed from the flight. No food unless pre ordered. Didn't know we would need it because of delay.

Book cheap flights from Boston to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to Ontario found on KAYAK in the last 72 hours.
4/29Mon
1 stop
26h 19mBOS-ONT
$110
4/24Wed
2 stops
19h 55mBOS-ONT
$114
6/1Sat
1 stopJetBlue
9h 24mBOS-ONT
$119
5/4Sat
1 stopJetBlue
12h 16mBOS-ONT
$125
4/24Wed
1 stopAmerican Airlines
11h 32mBOS-ONT
$137
4/23Tue
1 stopDelta
8h 37mBOS-ONT
$138
4/22Mon
1 stopDelta
8h 10mBOS-ONT
$148
4/18Thu
1 stopAmerican Airlines
9h 53mBOS-ONT
$188
4/23Tue
2 stopsUnited Airlines
10h 57mBOS-ONT
$193
8/28Wed
1 stopUnited Airlines
10h 21mBOS-ONT
$198

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Last minute flights from Boston to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to Ontario that are departing in the next 10 days.
4/2Tue
multi-stopDelta
8h 38mBOS-ONT
4/5Fri
multi-stopDelta
7h 48mONT-BOS
$486
3/31Sun
multi-stopDelta
10h 08mBOS-ONT
4/16Tue
multi-stopDelta
7h 42mONT-BOS
$521
4/2Tue
multi-stopUnited Airlines
8h 10mBOS-ONT
4/5Fri
multi-stopUnited Airlines
6h 56mONT-BOS
$627
3/30Sat
multi-stopAmerican Airlines
11h 38mBOS-ONT
4/6Sat
multi-stopAmerican Airlines
7h 13mONT-BOS
$628
4/2Tue
multi-stopUnited Airlines
13h 22mBOS-ONT
4/5Fri
multi-stopUnited Airlines
6h 56mONT-BOS
$632
3/30Sat
multi-stopAmerican Airlines
11h 01mBOS-ONT
4/6Sat
multi-stopAmerican Airlines
7h 13mONT-BOS
$633
3/31Sun
multi-stopAlaska Airlines
10h 52mBOS-ONT
4/8Mon
multi-stopAlaska Airlines
9h 13mONT-BOS
$660
4/2Tue
multi-stopAlaska Airlines
10h 52mBOS-ONT
4/9Tue
multi-stopAlaska Airlines
27h 27mONT-BOS
$698
3/31Sun
multi-stop
28h 02mBOS-ONT
4/15Mon
multi-stop
18h 15mONT-BOS
$748
3/29Fri
multi-stop
16h 45mBOS-ONT
4/1Mon
multi-stop
9h 32mONT-BOS
$892

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Boston - Ontario Flights

Departure:

Boston (BOS)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Boston

Cabin classes: