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ONT - BOS

$124 Find cheap flights from Ontario to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Boston departing on 7/28. 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
Thu 6/27
Thu 7/4

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Boston.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Boston.
In the last 7 days travelers have searched 42,816,550 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Boston 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
11:47 pm - 12:49 pmONT-BOS
10h 02m1 stop
2:39 pm - 10:32 pmBOS-ONT
10h 53m1 stop
$248JetBlue
Find Deal
Tue, Aug 13 - Mon, Aug 19
11:59 pm - 12:51 pmONT-BOS
9h 52m1 stop
2:28 pm - 10:38 pmBOS-ONT
11h 10m1 stop
$274JetBlue
Find Deal
Mon, Jul 15 - Thu, Jul 18
11:00 pm - 9:19 amONT-BOS
7h 19m1 stop
10:12 am - 5:52 pmBOS-ONT
10h 40m1 stop
$285American Airlines
Find Deal
Tue, Oct 22 - Tue, Oct 29
11:00 pm - 11:09 amONT-BOS
9h 09m1 stop
11:23 am - 5:52 pmBOS-ONT
9h 29m2 stops
$290American Airlines
Find Deal
Tue, Oct 22 - Tue, Oct 29
12:45 pm - 1:14 amONT-BOS
9h 29m1 stop
1:55 pm - 7:22 pmBOS-ONT
8h 27m1 stop
$296Delta
Find Deal
Wed, Sep 18 - Wed, Sep 25
10:59 pm - 12:38 pmONT-BOS
10h 39m1 stop
10:55 am - 7:22 pmBOS-ONT
11h 27m1 stop
$301Delta
Find Deal
Fri, Oct 18 - Wed, Oct 23
6:25 pm - 6:00 amONT-BOS
8h 35m1 stop
6:00 am - 12:15 pmBOS-ONT
9h 15m1 stop
$383United Airlines
Find Deal
Fri, Jul 19 - Tue, Jul 23
6:25 pm - 5:57 amONT-BOS
8h 32m1 stop
3:30 pm - 9:31 pmBOS-ONT
9h 01m1 stop
$386United Airlines
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Wed, Sep 18 - Wed, Sep 25
11:29 am - 11:59 pmONT-BOS
9h 30m1 stop
7:00 am - 3:20 pmBOS-ONT
11h 20m1 stop
$388Alaska Airlines
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Tue, Nov 5 - Tue, Nov 12
7:33 pm - 8:20 amONT-BOS
9h 47m1 stop
7:00 am - 10:15 pmBOS-ONT
18h 15m2 stops
$485Alaska Airlines
Find Deal
Fri, Sep 20 - Wed, Sep 25

Flights from Ontario to Boston - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Boston 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 Ontario to Boston?

The average price of all flights from Ontario to Boston clicked on KAYAK for each day over the last 12 months.
For Ontario to Boston, Saturday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Boston back to Ontario, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from Ontario to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Boston, 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 Ontario to Boston is January, where tickets cost $306 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $520 and $486 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Boston, 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 Ontario to Boston, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 56 days before departure.

Which airlines provide the cheapest flights from Ontario to Boston?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, JetBlue offered the best one-way deal for that route, at $124. KAYAK users also found Ontario to Boston round-trip flights on JetBlue from $248 and on American Airlines from $285.

Good to know

Low season

January

High season

October

Cheapest flight

$124
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Ontario to Boston

When to book flights from Ontario to Boston

Are your dates flexible? Find out the best times to travel from Ontario to Boston 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 Ontario to Boston

  • Does ONT have an on-site hotel?

    ONT does not have a hotel within its grounds. However, if you intend to stay at a hotel near this airport, you’ll be spoilt for choice, as Candlewood Suites Ontario Convention Center, Comfort Suites Ontario Convention Center, and Azure Hotel & Suites Ontario Airport are all a short distance from the airport.

  • Can I breastfeed my baby at ONT?

    If you’re traveling with a baby, you can take advantage of one of the nursing suites available at ONT to breastfeed your infant. These nursing suites are present across from gate 207 in Terminal 2 and across from gate 407 in Terminal 4.

  • Can I rent a car at BOS?

    If you’d like to rent a car at BOS, you’ll be happy to hear that this airport features a Rental Car Center that hosts offices for car rentals like Hertz, Avis, Budget, Dollar, SIXT, and Thrifty. To get to this Rental Car Center, you’ll have to board one of the white or blue shuttle buses present on the lower level of the airport’s main terminal.

  • Does BOS have a prayer room?

    If you’re a religious individual, you’ll get the chance to pray before exiting BOS, as it boasts an expansive and well-maintained prayer room. This prayer room referred to as the Our Lady of the Airways Chapel, is situated in Terminal C, on the Arrivals Level, a short distance past Baggage Claim 8.

  • What is the cheapest flight from Ontario to Boston?

    In the last 3 days, the lowest price for a flight from Ontario to Boston was $124 for a one-way ticket and $248 for a round-trip.

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

    No, a passport isn't needed to fly from Ontario to Boston. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Ontario to Boston?

    Ontario airport is called Ontario and the only airport in Boston is Boston Logan Intl.

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

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

  • Which airline alliances offer flights from Ontario to Boston?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Boston are Delta and Alaska Airlines. With an average price for the route of $398 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 $503 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Ontario to Boston?

    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 Ontario to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Ontario 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 Ontario to Boston?

    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 Boston with an airline and back to Ontario with another airline. Booking your flights between Ontario and BOS 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 Ontario to Boston?

    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 Boston from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Ontario to Boston

  • On the date you’re set to fly from Ontario Airport (ONT), it’s in your best interest to arrive at the airport at least an hour before your flight. Arriving this early will give you enough time to go through the airport’s tedious security checkpoints. Getting to the airport this early will also give you time to check out the airport’s points of interest.
  • If you’re disabled, you can get the assisted travel services you require on your flight from ONT to Boston Logan International Airport (BOS), provided you inform the airline you intend to travel with of your needs at least 72h before your flight. It’s advisable that you inform your airline of your needs 72h before your flight so that they can prepare adequately for you.
  • In case you intend to leave your car at a parking garage at ONT till you fly back, you should consider doing so at one of the off-site garages near the airport. This will save you some money, as the off-site garages charge cheaper rates than the airport’s on-site garages.
  • BOS is a pet-friendly airport. If you’ve traveled with a pet to this airport, you can let it relieve itself at one of the airport’s pet relief areas, available on the Arrivals Level curb of every terminal.
  • If you’re a fan of art, you should consider walking around BOS airport before departing it. This is because at all the terminals, you’ll be able to spot various art installations. It’s worth noting that the artworks on display at this airport’s art installations are all pieces done by local artists.
See more tips

Top 5 airlines serving from Ontario to Boston

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Boston. 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 Ontario to Boston? 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 10502 reviews
8.6Crew
8.2Boarding
7.9Comfort
8.0Entertainment
7.4Food
Airline reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

10.0 ExcellentMichael, May 2024SJC - ATL
Read more about Delta reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

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

The boarding was horrible. You couldn’t hear the announcements at all. Probably because there is so much in the area for businesses. They need a louder PA system. Other than that it was a good Delta experience.

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

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Terrible. Delta delays caused us to miss our flight and they did nothing to fix it.

The A330-200 was showing its age but otherwise this was a pleasant flight with friendly crew. The meals/snack provided were pretty good.

Great! I love Jet Blue. My favorite airline! Very efficient, clean and timely.

We were told that our flight would be delayed for 90+ minutes because of weather, so we went to get something to eat only to have them randomly start boarding 15 minutes after the announcement, with no warning.

Entertainment... No earphones passed out. Many including me couldn't use the TV. Legroom was good. Crew was indifferent and a bit surly. Free wifi was a nice convenience. Check in desk location was unknown. Gate number on the boarding passes was wrong.

Confusing. Delay updates were out of whack At one point it said my flight was 25 hours. Three gate changes and two delays only to change back to original departure time. Gate announcer and on board flight attendant (Alejandro) making the announcements was impossible to understand due to accent and speed of speech. After beverage service the rear flight attendants sat back there on their phones. No refills no checking in, one sweep through for trash collection. Very impersonal. Bring back Coke products

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Delayed by almost an hour - I also noticed that all JetBlue flights departing from PBI were delayed yet the weather was perfect.

I loved the wifi, much better than Delta. Seats were old. and bathrooms dingy.

There was no wheelchair or wheelchair escort at the gate..unacceptable

Delayed 4 hours because of maintenance issue they knew about all day. Get another plane. Time is precious!

I liked that boarding and take off were timely despite a 15 minute delay due to weather. The pilot communicated with us the entire flight keeping us informed re: turbulance and slight delays on the runway after we landed.

On time take off…US cabins look tired and need of refresh!

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

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

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

the head jack on my seat didn't work and the power outlet didn't work for my seat

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

Delayed abs delayed Gate crew giving poor info - we are definitely leaving at —- Ultimately to cancel flight after 4+ hours of delays Just cancel it earlier

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

The crew was the best and very accommodating I know you don't offer any complimentary items but water and coffee will not break the bank !!

Worst airline experience ever. Lost my IPad going thru security. Charged for my dog carriage at the gate not at ticket counter. Gave away my seat 6D. Expressed I wanted my seat back after charging me 99 for dog carriage. Should have thrown it out. Had a 16 yr old Yorkie heading to Boston after being a snowbird. Seats small. Very bad experience. Still don’t have my IPad. Horrible

My mother was HARASSED AND ACCOSTED by the gate agent for her bag. I pre purchased the bag fee and the gate agent made my 78 year old mother board, deplane, re pay for her bag fee and board again. The gate agent made my mother pick up her own bag and REFUSED to help her, she is an older woman who wasn’t bothering anyone on a flight that had maybe 30’total passengers. I am going to sue this airlines for their HORRIBLE customer service and treatment of my mother, and all this occurred the day after Mother’s Day!!!

Horrible, first flight delayed. They switched my connecting flight while I was en route and even though I was originally supposed to be on the flight going back home to boston, refused to let me board and told me I would have to wait for next flight that was 14 hours later. Ended up renting a car and driving 6.5 hours back home. Still getting messages about flight and it is now showing that the other flight they put me on is now canceled and I would have to wait 24 hours for the next one. I will never book with spirit again

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

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

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

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.

The seat was very uncomfortable from Boston to Nashville. Otherwise the flight was excellent.

Kayak does not know that spirit airlines charged me $70 to fly. But the bag check-in was $89 each way. This is false advertising to lure people. Spirit airlines sends bunch of emails after flight purchases to buy wifi, better seats, priority boarding, secure reserved seats. This is false advertising. Up front pricing. I would of flown jet blue or Alaska airlines.

Book cheap flights from Ontario to Boston

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Boston found on KAYAK in the last 72 hours.
7/28Sun
1 stopJetBlue
10h 04mONT-BOS
$124
7/20Sat
2 stopsAmerican Airlines
10h 01mONT-BOS
$148
11/18Mon
1 stopDelta
7h 08mONT-BOS
$153
6/11Tue
1 stopDelta
8h 41mONT-BOS
$163
7/31Wed
1 stopUnited Airlines
8h 35mONT-BOS
$193
8/27Tue
2 stopsUnited Airlines
14h 59mONT-BOS
$198
10/9Wed
2 stopsAlaska Airlines
11h 00mONT-BOS
$204
6/11Tue
2 stopsAlaska Airlines
11h 02mONT-BOS
$218
10/6Sun
3 stops
22h 13mONT-BOS
$605
7/20Sat
3 stops
33h 24mONT-BOS
$636

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Last minute flights from Ontario to Boston

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 Ontario to Boston that are departing in the next 10 days.
5/31Fri
multi-stopAlaska Airlines
10h 59mONT-BOS
10/5Sat
multi-stopAlaska Airlines
18h 52mBOS-ONT
$599
5/31Fri
multi-stopDelta
9h 39mONT-BOS
6/7Fri
multi-stopDelta
8h 32mBOS-ONT
$611
5/31Fri
multi-stopAlaska Airlines
9h 35mONT-BOS
6/8Sat
multi-stopAlaska Airlines
9h 28mBOS-ONT
$640
5/30Thu
multi-stopAmerican Airlines
7h 49mONT-BOS
6/6Thu
multi-stopAmerican Airlines
10h 22mBOS-ONT
$644
5/31Fri
multi-stopAmerican Airlines
9h 20mONT-BOS
6/7Fri
multi-stopAmerican Airlines
7h 30mBOS-ONT
$645
5/30Thu
multi-stopAmerican Airlines
9h 18mONT-BOS
6/6Thu
multi-stopAmerican Airlines
10h 22mBOS-ONT
$650
5/31Fri
multi-stopAlaska Airlines
10h 59mONT-BOS
6/12Wed
multi-stopAlaska Airlines
16h 06mBOS-ONT
$709
6/1Sat
multi-stopAlaska Airlines
10h 30mONT-BOS
6/4Tue
multi-stopAlaska Airlines
9h 28mBOS-ONT
$737
5/31Fri
multi-stopAlaska Airlines
10h 59mONT-BOS
6/9Sun
multi-stopAlaska Airlines
16h 06mBOS-ONT
$774
5/30Thu
multi-stopUnited Airlines
7h 15mONT-BOS
6/2Sun
multi-stopUnited Airlines
8h 03mBOS-ONT
$836

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Ontario - Boston Flights

Departure:

Ontario (ONT)United States

Destination:

Boston (BOS)United States

Return flight deals:

Boston - Ontario

Cabin classes: