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ONT - BOS

Find cheap flights from Ontario to Boston 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 Ontario to Boston departing on 7/29. 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 5/25
Sat 6/1

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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 45,119,101 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
11:45 pm - 12:49 pmONT-BOS
10h 04m1 stop
3:20 pm - 10:28 pmBOS-ONT
10h 08m1 stop
$248JetBlue
Find Deal
Mon, Jul 29 - Mon, Aug 12
10:29 pm - 9:18 amONT-BOS
7h 49m1 stop
5:25 am - 11:52 amBOS-ONT
9h 27m1 stop
$294American Airlines
Find Deal
Sat, May 11 - Sat, May 18
10:00 pm - 9:43 amONT-BOS
8h 43m1 stop
1:55 pm - 7:05 pmBOS-ONT
8h 10m1 stop
$296Delta
Find Deal
Tue, Jul 23 - Wed, Aug 21
11:45 pm - 12:49 pmONT-BOS
10h 04m1 stop
3:20 pm - 10:28 pmBOS-ONT
10h 08m1 stop
$300JetBlue
Find Deal
Wed, Aug 14 - Tue, Aug 20
12:50 pm - 1:01 amONT-BOS
9h 11m2 stops
5:25 am - 11:52 amBOS-ONT
9h 27m1 stop
$301American Airlines
Find Deal
Sat, May 11 - Sat, May 18
12:04 pm - 11:36 pmONT-BOS
8h 32m1 stop
5:50 am - 10:54 amBOS-ONT
8h 04m1 stop
$306Delta
Find Deal
Fri, Jul 12 - Wed, Jul 17
6:00 am - 5:12 pmONT-BOS
8h 12m1 stop
6:00 am - 1:21 pmBOS-ONT
10h 21m1 stop
$376United Airlines
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Tue, Aug 27 - Wed, Aug 28
7:40 am - 11:59 pmONT-BOS
13h 19m2 stops
6:00 am - 1:21 pmBOS-ONT
10h 21m1 stop
$381United Airlines
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Tue, Aug 27 - Wed, Aug 28
10:15 am - 11:59 pmONT-BOS
10h 44m1 stop
7:00 am - 4:05 pmBOS-ONT
12h 05m1 stop
$396Alaska Airlines
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Tue, May 7 - Wed, May 8
5:00 pm - 5:45 amONT-BOS
9h 45m1 stop
7:59 pm - 9:05 amBOS-ONT
16h 06m1 stop
$459Alaska Airlines
Find Deal
Tue, May 7 - Tue, May 21

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, Thursday 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 $277 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $548 and $501 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 82 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 $294.

Good to know

Low season

January

High season

October

Cheapest flight

$124
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 12% 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 $407 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

Top tips for finding a cheap flight from ONT 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 11004 reviews
8.2boarding
8.0entertainment
7.9comfort
8.6crew
7.5food
Airline reviews

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

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

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.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

The most unprofessional and disorganized experience I’ve ever had with an airlines. After the flight was diverted on the runway and we returned to the gate, there was no communication about the plans and it took an additional 5 hours to get set up with a hotel and a new flight, information that was not readily given to the passengers and mostly gotten second hand from what other passengers heard from each other. Based on this experience I cannot recommend flying delta again

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

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.

Has been always great except flight cancelation in the past at very last minute waiting till 2am and we when have to beg for overnight accommodation

There were weather issues and coding problems whatever those refer to, but JetBlue, for two days in a row was unbelievably late. Several hours late, resulting in almost no sleep for passengers like me.

The plane was very hot. There were delays . Generally, the flight was great.

If jet blue is going to offer tv at every seat, fix the headphone connection so you can hear. Haven’t had a usable headphone jack in years

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

Left 2 hours later for delayed I had to take care a kid with special need since people don’t want to move to accommodate the rest of the family. . It wasn’t bad but that made me upset that people can be that selfish.

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

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Wouldn’t let me check in said couldn’t find a ticket had to wait very long Time

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.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

Flight From PHX to CVG was on time, very professional staff

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.

One hour late taking off. Concerning, very hard landing. Uncomfortable seats with no recline. Extremely slow baggage claim. Very professional, knowledgeable flight attendants. Brand new, very clean plane.

Can’t say there was anything I particularly liked. Seats were very tight, leather wrapped plastic. I followed up a much longer and cheaper trip from Honolulu on southwest, everything was phenomenal, this flight was the exact opposite. Blows my mind they charge for water of all things. One of the attendants seemed very rude, I watched a taller gentleman a couple rows forward with his knees pressed into the back of the seat ahead, while the woman in that seat leaned forward the entire flight, I’m sure because she could feel his knees. I’ll be avoiding spirit like the plague from here forward.

Didn’t make the connecting flight due to a delay on our first flight.

I had a phobia for Spirit and now is 100% confirmed. Flight delayed, missed connecting flight and staying overnight . Now not even able to get my boarding pass until I’ll get into the airport. It’s really really bad at this point

I felt scam to have to pay $50 additional for my carry on luggage which was free for my other airline.

Enjoyed the experience, on time flights, friendly staff the WiFi was intros d kept cutting out.

Awful experience. Both flights were delayed several times with weather but also crew members being the official cause. The vouchers are unusable and insufficient ($50 voucher to fly the same crappy airline is a joke for putting me on a red-eye that landed at 3:00 am). The aircrafts were old and uncomfortable (have a real pocket on the seat, for crying out loud!).

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.
7/29Mon
1 stopJetBlue
10h 04mONT-BOS
$124
5/17Fri
1 stopJetBlue
11h 04mONT-BOS
$130
5/30Thu
1 stopAlaska Airlines
9h 57mONT-BOS
$148
5/18Sat
1 stopAmerican Airlines
7h 17mONT-BOS
$149
5/11Sat
1 stopAmerican Airlines
7h 49mONT-BOS
$157
5/11Sat
1 stopDelta
10h 15mONT-BOS
$158
8/13Tue
2 stopsUnited Airlines
10h 27mONT-BOS
$193
8/19Mon
2 stopsUnited Airlines
12h 55mONT-BOS
$203
5/10Fri
2 stopsAlaska Airlines
11h 32mONT-BOS
$213
5/8Wed
1 stopDelta
7h 38mONT-BOS
$219

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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.
4/27Sat
multi-stopAlaska Airlines
9h 45mONT-BOS
5/8Wed
multi-stopAlaska Airlines
12h 05mBOS-ONT
$550
4/28Sun
multi-stopAlaska Airlines
10h 30mONT-BOS
5/3Fri
multi-stopAlaska Airlines
9h 32mBOS-ONT
$630
4/29Mon
multi-stopAlaska Airlines
9h 45mONT-BOS
5/4Sat
multi-stopAlaska Airlines
13h 28mBOS-ONT
$657
4/29Mon
multi-stopUnited Airlines
6h 54mONT-BOS
5/1Wed
multi-stopUnited Airlines
8h 10mBOS-ONT
$701
4/29Mon
multi-stopAmerican Airlines
7h 54mONT-BOS
5/13Mon
multi-stopAmerican Airlines
8h 55mBOS-ONT
$849
4/26Fri
multi-stopUnited Airlines
6h 56mONT-BOS
4/28Sun
multi-stopUnited Airlines
8h 10mBOS-ONT
$857
4/25Thu
multi-stopUnited Airlines
8h 27mONT-BOS
4/28Sun
multi-stopUnited Airlines
13h 28mBOS-ONT
$862
4/25Thu
multi-stopAmerican Airlines
7h 54mONT-BOS
5/2Thu
multi-stopAmerican Airlines
8h 57mBOS-ONT
$867
4/25Thu
multi-stopAmerican Airlines
10h 00mONT-BOS
4/26Fri
multi-stopAmerican Airlines
8h 57mBOS-ONT
$879
4/26Fri
multi-stopAmerican Airlines
7h 54mONT-BOS
4/29Mon
multi-stopAmerican Airlines
8h 57mBOS-ONT
$885

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Ontario - Boston Flights

Departure:

Ontario (ONT)United States

Destination:

Boston (BOS)United States

Return flight deals:

Boston - Ontario

Cabin classes: