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Ontario

$114+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
Sep 2 — Sep 91
Wed 9/2
Wed 9/9
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 August 3, 2026.

This Delta deal was found by Cheapflights users on 7/30. 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
BDL
-
ONT
1 stop8h 06m
Delta
Tue 10/2012:18 pm
ONT
-
BDL
1 stop8h 41m
Delta
Deal found 7/30$333
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 8/273:36 pm
BDL
-
ONT
1 stop8h 17m
United Airlines
Tue 9/19:01 am
ONT
-
BDL
2 stops11h 58m
United Airlines
Deal found 7/28$338
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/279:13 am
BDL
-
ONT
2 stops12h 02m
American Airlines
Tue 9/17:05 am
ONT
-
BDL
2 stops12h 49m
American Airlines
Deal found 7/28$343
This Southwest deal was found by Cheapflights users on 7/28. 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 11/511:50 am
BDL
-
ONT
1 stop11h 00m
Southwest
Mon 11/911:55 pm
ONT
-
BDL
1 stop13h 25m
Southwest
Deal found 7/28$344
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/286:45 am
BOS
-
ONT
1 stop7h 58m
American Airlines
Sun 9/68:01 pm
ONT
-
BOS
1 stop6h 46m
American Airlines
Deal found 7/29$347
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/101:10 pm
BOS
-
ONT
1 stop8h 03m
American Airlines
Mon 9/141:04 pm
ONT
-
BOS
1 stop7h 26m
American Airlines
Deal found 7/30$348
This Delta deal was found by Cheapflights users on 8/1. 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.
Fri 9/112:05 pm
BDL
-
ONT
1 stop9h 00m
Delta
Tue 9/1512:17 pm
ONT
-
BDL
1 stop8h 42m
Delta
Deal found 8/1$351
This Southwest deal was found by Cheapflights users on 7/28. 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.
Tue 8/253:20 pm
BOS
-
ONT
2 stops9h 40m
Southwest
Tue 9/111:55 pm
ONT
-
BOS
1 stop9h 20m
Southwest
Deal found 7/28$352
This American Airlines deal was found by Cheapflights users on 7/29. 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 9/198:10 am
BDL
-
ONT
2 stops13h 07m
American Airlines
Sat 9/266:00 am
ONT
-
BDL
1 stop8h 30m
American Airlines
Deal found 7/29$356
This Delta deal was found by Cheapflights users on 7/29. 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.
Fri 8/2812:20 pm
BOS
-
ONT
1 stop9h 10m
Delta
Sat 9/512:00 pm
ONT
-
BOS
1 stop9h 38m
Delta
Deal found 7/29$357
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:30 am
BOS
-
ONT
1 stop8h 12m
Delta
Sat 9/57:05 am
ONT
-
BOS
1 stop9h 30m
Delta
Deal found 7/31$358
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Mon 8/246:45 am
BOS
-
ONT
1 stop7h 58m
American Airlines
Tue 9/112:59 pm
ONT
-
BOS
1 stop7h 25m
American Airlines
Deal found 7/30$359

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 August 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$333
(Southwest)

One-way from

$114
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$391
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. 8% potential increase in price ($33 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 August 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 August 3, 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

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

Thu 9/10

1:15 pm-8:25 pm

2 stops10h 10m

Ontario

Mon 9/14

11:55 pm-11:35 am

1 stop8h 40m

$338

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 9/9

2:00 pm-8:01 pm

1 stop9h 01m

Ontario

Wed 9/16

6:08 am-7:19 pm

2 stops10h 11m

$352

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 8/28

12:20 pm-6:30 pm

1 stop9h 10m

Ontario

Sat 9/5

12:00 pm-12:38 am

1 stop9h 38m

$357

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sun 8/30

6:05 am-12:16 pm

1 stop9h 11m

Ontario

Sat 9/5

7:05 am-7:35 pm

1 stop9h 30m

$362

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 9/11

12:40 pm-8:45 pm

2 stops11h 05m

Ontario

Mon 9/14

8:40 pm-9:55 am

2 stops10h 15m

$367

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

Tue 9/15

12:45 pm-7:40 pm

1 stop9h 55m

Ontario

Tue 9/15

11:55 pm-12:00 pm

1 stop9h 05m

$369

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

Wed 9/16

5:45 pm-10:05 pm

1 stop7h 20m

Ontario

Thu 9/24

8:40 pm-9:40 am

2 stops10h 00m

$371

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

Tue 9/1

4:15 pm-10:00 pm

1 stop8h 45m

Ontario

Wed 9/16

8:35 am-10:05 pm

2 stops10h 30m

$374

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 9/16

3:20 pm-10:05 pm

2 stops9h 45m

Ontario

Sun 9/20

2:05 pm-12:45 am

1 stop7h 40m

$398

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

Mon 10/19

5:50 am-2:10 pm

2 stops11h 20m

Ontario

Thu 10/22

11:55 pm-11:00 am

1 stop8h 05m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 58 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, February is the cheapest month in which you can book a flight from Massachusetts to Ontario (average of $317). Flying from Massachusetts to Ontario in December is currently the most expensive (average of $881). 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?

Airfare is below average for this route at the moment.
Massachusetts to Ontario flights typically cost between $358 and $756 in August.
The cheapest round-trip price found within the last 5 days was $347 on American Airlines (Aug 28-Sep 6).

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 59 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 Southwest, United Airlines, and Delta fly from Massachusetts to Ontario in about 9h 01m. The time it takes to get you to your destination can typically vary by up to 1h 09m. 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 American Airlines and Southwest, 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 $317). Flying from Massachusetts to Ontario in December is currently the most expensive (average of $881). 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 August 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$233Average$557FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$239Average$487FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$441FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$298Average$687FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$307Average$484FlexibilityNo cancel feeOn-time63%

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