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BOS - ONT

Find cheap flights from Boston to Ontario from $124

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 8/8. 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 6/4
Tue 6/11

Search 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.
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

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Cheap flight deals from Boston to Ontario (BOS-ONT)

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
5:25 am - 11:52 amBOS-ONT
9h 27m1 stop
7:26 pm - 5:52 amONT-BOS
7h 26m1 stop
$311American Airlines
Find Deal
Sat, Jun 1 - Sun, Jun 9
7:54 am - 1:52 pmBOS-ONT
8h 58m1 stop
12:53 pm - 11:57 pmONT-BOS
8h 04m1 stop
$315American Airlines
Find Deal
Thu, May 23 - Tue, May 28
3:20 pm - 10:28 pmBOS-ONT
10h 08m1 stop
11:45 pm - 12:49 pmONT-BOS
10h 04m1 stop
$319JetBlue
Find Deal
Tue, Jul 16 - Mon, Jul 22
6:20 am - 12:13 pmBOS-ONT
8h 53m1 stop
12:50 pm - 1:05 amONT-BOS
9h 15m1 stop
$341Delta
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Sun, May 26 - Sat, Jun 1
6:20 am - 12:13 pmBOS-ONT
8h 53m1 stop
10:00 pm - 9:48 amONT-BOS
8h 48m1 stop
$346Delta
Find Deal
Wed, Jun 5 - Tue, Jun 11
3:20 pm - 10:28 pmBOS-ONT
10h 08m1 stop
11:45 pm - 12:49 pmONT-BOS
10h 04m1 stop
$365JetBlue
Find Deal
Thu, Jul 11 - Sun, Jul 14
5:30 pm - 11:58 pmBOS-ONT
9h 28m1 stop
10:00 am - 11:59 pmONT-BOS
10h 59m1 stop
$372Alaska Airlines
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Wed, May 29 - Tue, Jun 4
11:40 am - 5:28 pmBOS-ONT
8h 48m1 stop
6:25 pm - 6:00 amONT-BOS
8h 35m1 stop
$396United Airlines
Find Deal
Thu, May 30 - Mon, Jun 3
1:30 pm - 8:48 pmBOS-ONT
10h 18m1 stop
6:25 pm - 6:00 amONT-BOS
8h 35m1 stop
$417United Airlines
Find Deal
Thu, May 30 - Tue, Jun 4
5:30 pm - 11:58 pmBOS-ONT
9h 28m1 stop
4:21 pm - 5:50 amONT-BOS
10h 29m1 stop
$457Alaska Airlines
Find Deal
Wed, May 29 - Fri, Jun 7

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 Saturday, 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 September, where tickets cost $297 on average. On the other hand, the most expensive months are June and November, where the average cost of tickets is $515 and $491 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 47 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 American Airlines ($311) and JetBlue ($319). JetBlue proposed the cheapest one-way flight at $124.

Good to know

Low season

September

High season

August

Cheapest flight

$124
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 0% 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 $124 for a one-way ticket and $311 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, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Ontario are Delta and Alaska Airlines. With an average price for the route of $442 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $171 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

 
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
Alaska AirlinesOverall score based on 9137 reviews
7.3Food
8.2Boarding
7.3Entertainment
8.6Crew
7.9Comfort
Airline reviews

Overall good flight, smooth and on time and comfortable. Disappointing that food is not served and you can't purchase the snack packs on the plane.

8.0 ExcellentKristen, May 2024BOS - SEA
Read more about Alaska Airlines reviews

Overall good flight, smooth and on time and comfortable. Disappointing that food is not served and you can't purchase the snack packs on the plane.

My baggage was in another flight, anit was delayed for one hour.

They canceled the flight 30 minutes prior to departure without any heads up.

Like South West(2 check in baggage free) if Alaskan Airlines could give at least one check in baggage free then it would be great.

Up on arrival, due to twisted ankle, I wasn’t able to walk. Requested for a wheelchair. They immediately asked for it. After 10 minutes wait a young man named Carlos picked me up at the gate, got my baggage and took me to the pick up area. It was a great service. Thanks Alaska Air line

Staff great. Tight seating. Pretzels and drink same as any other airline.

We had a very scary attempted landing in Palm Springs and were redirected to Ontario. It was a stressful flight.

Every thing means , crew, service, timing, boarding is very good.

My boarding pass birthdate was printed incorrectly causing me to spend an extra hour in a check-in and then again TSA line and to miss a chance to have dinner pre-flight. My window seat was given away and was replaced with a middle seat. I would have liked an opportunity to charge my phone and take advantage of movies but many of the departure gate chargers weren’t operational and I don’t know of an in-flight charging option, The flight left 45 late after trouble with unruly passengers, and I was glad staff removed them.

Horrible. I likely will have to spend several thousand dollars to rebook my international flights, due to their delays, plus a hotel in SF. I can’t wait to never fly them again!

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

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

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.

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.

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

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.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Too many fees (but that seems to apply to all airlines nowadays)

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

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

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.
8/8Thu
1 stopJetBlue
10h 08mBOS-ONT
$124
5/29Wed
1 stopAlaska Airlines
9h 28mBOS-ONT
$143
5/30Thu
1 stopDelta
8h 32mBOS-ONT
$148
5/18Sat
1 stopAmerican Airlines
8h 47mBOS-ONT
$163
5/23Thu
1 stopAmerican Airlines
8h 58mBOS-ONT
$164
9/12Thu
1 stopDelta
8h 22mBOS-ONT
$174
5/30Thu
1 stopUnited Airlines
8h 48mBOS-ONT
$193
5/29Wed
1 stopUnited Airlines
11h 54mBOS-ONT
$224
6/6Thu
3 stops
18h 50mBOS-ONT
$539
6/4Tue
3 stops
18h 50mBOS-ONT
$548

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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.
5/9Thu
multi-stopDelta
8h 55mBOS-ONT
5/13Mon
multi-stopDelta
8h 41mONT-BOS
$611
5/10Fri
multi-stopUnited Airlines
12h 14mBOS-ONT
5/12Sun
multi-stopUnited Airlines
7h 22mONT-BOS
$632
5/7Tue
multi-stopAlaska Airlines
12h 05mBOS-ONT
5/11Sat
multi-stopAlaska Airlines
9h 45mONT-BOS
$640
5/7Tue
multi-stopUnited Airlines
8h 10mBOS-ONT
5/28Tue
multi-stopUnited Airlines
8h 35mONT-BOS
$642
5/9Thu
multi-stopAmerican Airlines
8h 37mBOS-ONT
5/11Sat
multi-stopAmerican Airlines
9h 11mONT-BOS
$643
5/7Tue
multi-stopUnited Airlines
13h 22mBOS-ONT
5/28Tue
multi-stopUnited Airlines
8h 35mONT-BOS
$647
5/10Fri
multi-stopAmerican Airlines
9h 36mBOS-ONT
5/13Mon
multi-stopAmerican Airlines
9h 20mONT-BOS
$650
5/9Thu
multi-stopUnited Airlines
8h 45mBOS-ONT
5/12Sun
multi-stopUnited Airlines
8h 52mONT-BOS
$711
5/9Thu
multi-stopAlaska Airlines
12h 05mBOS-ONT
5/14Tue
multi-stopAlaska Airlines
10h 44mONT-BOS
$720
5/9Thu
multi-stopDelta
12h 45mBOS-ONT
5/12Sun
multi-stopDelta
14h 22mONT-BOS
$1,823

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Boston - Ontario Flights

Departure:

Boston (BOS)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Boston

Cabin classes: