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Ontario

$123+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
Jul 6 — Jul 131
Mon 7/6
Mon 7/13
1 adult, Economy
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Cheap 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 June 6, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:05 pm
BDL
-
ONT
1 stop24h 04m
Multiple Airlines
Thu 8/203:34 pm
ONT
-
BDL
1 stop11h 41m
Multiple Airlines
Deal found 6/5$340
This Alaska Airlines deal was found by Cheapflights users on 6/3. 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 9/17:12 am
BOS
-
ONT
1 stop9h 57m
Alaska Airlines
Sat 9/56:05 pm
ONT
-
BOS
1 stop9h 04m
Alaska Airlines
Deal found 6/3$359
This American Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/18:01 am
BOS
-
ONT
1 stop8h 27m
American Airlines
Tue 7/77:15 pm
ONT
-
BOS
1 stop7h 30m
American Airlines
Deal found 6/2$362
This American Airlines deal was found by Cheapflights users on 6/4. 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 7/177:00 am
BOS
-
ONT
1 stop8h 02m
American Airlines
Wed 8/1912:59 pm
ONT
-
BOS
1 stop7h 25m
American Airlines
Deal found 6/4$367
This Delta deal was found by Cheapflights users on 6/1. 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.
Mon 9/216:05 am
BOS
-
ONT
1 stop9h 05m
Delta
Mon 9/2810:00 pm
ONT
-
BOS
1 stop10h 08m
Delta
Deal found 6/1$368
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Sat 7/47:00 am
BOS
-
ONT
1 stop8h 02m
American Airlines
Sat 7/1110:25 am
ONT
-
BOS
1 stop9h 45m
American Airlines
Deal found 6/3$372
This Super.com deal was found by Cheapflights users on 6/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/64:30 pm
BOS
-
ONT
1 stop9h 05m
JetBlue
Fri 8/1411:50 pm
ONT
-
BOS
1 stop8h 31m
JetBlue
Deal found 6/5$373
This Southwest deal was found by Cheapflights users on 6/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:55 pm
BOS
-
ONT
1 stop9h 30m
Southwest
Tue 7/145:30 am
ONT
-
BOS
2 stops9h 30m
Southwest
Deal found 6/1$374
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:05 pm
BDL
-
ONT
1 stop24h 09m
Multiple Airlines
Tue 7/213:40 pm
ONT
-
BDL
2 stops16h 52m
Multiple Airlines
Deal found 6/3$376
This JetBlue deal was found by Cheapflights users on 6/5. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:09 pm
BOS
-
ONT
1 stop8h 27m
JetBlue
Mon 7/1311:51 pm
ONT
-
BOS
1 stop8h 42m
JetBlue
Deal found 6/5$377
This Delta deal was found by Cheapflights users on 6/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:00 am
BOS
-
ONT
1 stop9h 30m
Delta
Sat 10/175:05 pm
ONT
-
BOS
1 stop10h 06m
Delta
Deal found 6/2$378
This United Airlines deal was found by Cheapflights users on 6/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:00 am
BOS
-
ONT
1 stop9h 12m
United Airlines
Fri 7/176:39 pm
ONT
-
BOS
1 stop8h 42m
United Airlines
Deal found 6/4$380

Find flight deals from Massachusetts to Ontario

Keep the following information in mind while searching for Massachusetts to Ontario flight deals. Data was last updated June 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$340
(Kiwi.com)

One-way from

$123
(Super.com)

Popular in

April

Cheapest in

January

Average price

$412
Provider with most accurate pricing for Boston Logan Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Los Angeles flights.
Search Deals
From Massachusetts to Ontario
Search Deals
One-way flight from Massachusetts to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 June 6, 2026.
Use the filters below to find and compare flights from Massachusetts to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 8/13

6:05 am-12:05 pm

1 stop9h 00m

Ontario

Mon 8/17

10:00 pm-9:39 am

1 stop8h 39m

$388

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 7/3

5:20 pm-10:25 pm

1 stop8h 05m

Ontario

Wed 7/29

5:30 am-6:00 pm

2 stops9h 30m

$394

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 8/20

7:59 pm-11:04 am

1 stop18h 05m

Ontario

Sun 8/23

10:47 am-6:09 am

1 stop16h 22m

$418

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 9/2

9:33 am-5:10 pm

1 stop10h 37m

Ontario

Sun 9/6

6:05 pm-6:09 am

1 stop9h 04m

$418

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 7/1

3:54 pm-9:55 pm

1 stop9h 01m

Ontario

Sat 7/4

6:00 am-5:04 pm

1 stop8h 04m

$427

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

Wed 9/2

6:08 am-10:42 am

1 stop7h 34m

Ontario

Mon 9/7

10:00 pm-1:19 pm

2 stops12h 19m

$431

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 7/3

10:20 am-6:30 pm

1 stop11h 10m

Ontario

Wed 7/15

11:48 am-11:36 pm

1 stop8h 48m

$437

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

Wed 7/22

6:00 am-10:38 am

1 stop7h 38m

Ontario

Mon 7/27

10:00 pm-11:45 am

2 stops10h 45m

$441

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

Wed 8/5

7:07 am-6:15 pm

2 stops14h 08m

Ontario

Wed 8/12

12:33 pm-10:59 pm

1 stop7h 26m

$458

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 7/11

4:43 pm-9:59 pm

1 stop8h 16m

Ontario

Fri 7/17

11:51 pm-11:33 am

1 stop8h 42m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/2

Showing 1-10 of 59 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from Massachusetts to Ontario (average of $148). Flying from Massachusetts to Ontario in July is currently the most expensive (average of $296). 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.

How much does it cost to fly round-trip from Massachusetts to Ontario?

How far ahead should I book a flight from Massachusetts to Ontario?

To ensure you get the cheapest price possible for a flight from Massachusetts to Ontario, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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, Southwest, and Alaska Airlines fly from Massachusetts to Ontario in about 8h 05m. The time it takes to get you to your destination can typically vary by up to 10h. 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 United Airlines. According to our data, you can fly for as low as $129. Users have also found prices from $129 and $129 on Southwest and American 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, May is the cheapest month in which you can book a flight from Massachusetts to Ontario (average of $148). Flying from Massachusetts to Ontario in July is currently the most expensive (average of $296). 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 June 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$149Average$529FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$239Average$456FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$416FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$305Average$477FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$319Average$762FlexibilityNo cancel feeOn-time62%

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