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$101+ Cheap flights from Massachusetts to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheap flight deals from Massachusetts to Ontario

Keep the following information in mind while searching for Massachusetts to Ontario flight deals. Data was last updated November 2, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$276
(KAYAK)

One-way from

$101
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$367
Provider with most accurate pricing for Boston Logan Intl-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Los Angeles flights.
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From Massachusetts to Ontario
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One-way flight from Massachusetts to Ontario
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Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Massachusetts to Ontario

Cheapest flights from Massachusetts to Ontario
Explore the most affordable flight options available from Massachusetts to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 2, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/54:40 pmBOS - ONT
1 stop23h 06mAlaska Airlines
Wed 12/246:05 pmONT - BOS
1 stop9h 05mAlaska Airlines
Deal found 11/1$299
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:30 amBOS - ONT
1 stop9h 30mAmerican Airlines
Thu 12/256:20 amONT - BOS
1 stop7h 10mAmerican Airlines
Deal found 11/2$300
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:00 amBOS - ONT
1 stop12h 33mAlaska Airlines
Fri 12/127:33 pmONT - BOS
1 stop8h 56mAlaska Airlines
Deal found 11/2$306
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:10 amBOS - ONT
1 stop9h 24mDelta
Tue 12/96:00 amONT - BOS
1 stop7h 13mDelta
Deal found 11/1$307
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:59 amBOS - ONT
2 stops10h 20mAmerican Airlines
Mon 12/810:34 pmONT - BOS
1 stop8h 57mAmerican Airlines
Deal found 11/2$312
This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:59 amBOS - ONT
2 stops10h 20mAmerican Airlines
Tue 12/99:59 amONT - BOS
2 stops9h 34mAmerican Airlines
Deal found 11/1$317
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:05 amBOS - ONT
1 stop8h 58mAmerican Airlines
Thu 11/276:11 amONT - BOS
1 stop7h 07mAmerican Airlines
Deal found 10/31$326
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:53 pmBOS - ONT
1 stop7h 59mDelta
Thu 11/276:00 amONT - BOS
1 stop7h 10mDelta
Deal found 11/1$338
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:45 amBOS - ONT
2 stops10h 34mAmerican Airlines
Wed 12/249:53 amONT - BOS
1 stop7h 17mAmerican Airlines
Deal found 11/2$341
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:53 pmBOS - ONT
1 stop7h 59mDelta
Wed 12/31:29 pmONT - BOS
1 stop7h 12mDelta
Deal found 11/1$343
This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:45 amBOS - ONT
2 stops11h 37mAmerican Airlines
Thu 12/411:59 pmONT - BOS
1 stop8h 31mAmerican Airlines
Deal found 11/1$348
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:10 pmBDL - ONT
1 stop10h 32mDelta
Tue 12/210:25 pmONT - BDL
1 stop9h 52mDelta
Deal found 11/1$359

Cheapflights Fare Finder

 
Customize your flight search to find flights from Massachusetts to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 2, 2025.
Use the filters below to find and compare flights from Massachusetts to Ontario that are best for you.

Fly from

Massachusetts

Fly to

Ontario

Route

Depart

Return

Price

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 12/4

6:46 pm-11:58 pm

1 stop8h 12m

Ontario

Thu 12/11

5:49 pm-6:55 am

1 stop10h 06m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 12/4

6:46 pm-11:58 pm

1 stop8h 12m

Ontario

Fri 12/5

1:29 pm-11:41 pm

1 stop7h 12m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 12/5

6:46 pm-11:58 pm

1 stop8h 12m

Ontario

Mon 12/8

10:25 pm-10:10 am

1 stop8h 45m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 12/4

6:46 pm-11:58 pm

1 stop8h 12m

Ontario

Sat 12/6

1:29 pm-11:41 pm

1 stop7h 12m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 12/6

6:10 am-12:34 pm

1 stop9h 24m

Ontario

Sat 12/6

4:49 pm-6:20 am

1 stop10h 31m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 12/5

6:46 pm-11:58 pm

1 stop8h 12m

Ontario

Tue 12/9

6:00 am-4:13 pm

1 stop7h 13m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 12/5

6:46 pm-11:58 pm

1 stop8h 12m

Ontario

Thu 12/11

1:29 pm-11:41 pm

1 stop7h 12m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 12/6

7:15 am-5:08 pm

1 stop12h 53m

Ontario

Tue 12/9

1:29 pm-11:41 pm

1 stop7h 12m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 1/14

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Fri 1/23

11:53 am-11:59 pm

1 stop9h 06m

$327

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

Thu 11/27

2:15 pm-7:42 pm

1 stop8h 27m

Ontario

Tue 12/2

10:25 pm-11:17 am

1 stop9h 52m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 56 results
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Best time to book a flight from Massachusetts to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Massachusetts with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Massachusetts to Ontario

What is the cheapest month to book a flight from Massachusetts to Ontario?

Currently, February is the cheapest month in which you can book a flight from Massachusetts to Ontario (average of $123). Flying from Massachusetts to Ontario in April is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MA to ONT?

Find hourly flight availability from Massachusetts to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 2, 2025.

A simple way to save on the total cost of your ticket is to fly from Massachusetts to Ontario at noon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the evening.

Related info for your journey

Find useful and relevant information for your journey from Massachusetts to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Massachusetts?

    Ontario (ONT) is the airport you will fly into if you book a flight from Massachusetts to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

  • How long is the flight from Massachusetts to Ontario?

    Airlines like Delta, American Airlines, and United Airlines fly from Massachusetts to Ontario in about 8h 12m. The time it takes to get you to your destination can typically vary by up to 4h 06m. There are 2559 mi between Massachusetts and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Massachusetts to Ontario one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $148. Users have also found prices from $154 and $209 on Delta and United Airlines, respectively.

  • What are the most popular routes from Massachusetts to Ontario?

    When deciding which route to take from Massachusetts to Ontario consider Boston Logan Intl - Ontario, Hartford Bradley Intl - Ontario or Albany Intl - Ontario as they are the most popular.

  • Can I find deals for flights from Massachusetts to Ontario that include hotel bookings?

    Yes. In addition to deals on Massachusetts to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Massachusetts to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Massachusetts to Ontario.

  • Can I find deals for business class flights from Massachusetts to Ontario?

    Yes. Cheapflights offers flight deals from Massachusetts to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Massachusetts to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Massachusetts to Ontario (average of $123). Flying from Massachusetts to Ontario in April is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Massachusetts to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Massachusetts to Ontario

Discover the top 5 airlines that operate flights from Massachusetts to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$436FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$268Average$422FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$270Average$339FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$296Average$374FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$335Average$454FlexibilityNo cancel feeOn-time63%

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