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$139+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$256
(Rumbo)

One-way from

$139
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$402
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 ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 31, 2025.

This Rumbo 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/302:40 pmBOS - ONT
1 stop10h 19mJetBlue
vie. 9/510:56 pmONT - BOS
1 stop7h 38mJetBlue
Deal found 7/30$256
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.
sáb. 8/237:15 amBOS - ONT
1 stop9h 24mAmerican Airlines
sáb. 8/3012:22 pmONT - BOS
1 stop8h 26mAmerican Airlines
Deal found 7/29$263
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/267:30 amBOS - ONT
1 stop8h 02mUnited Airlines
mar. 9/27:00 amONT - BOS
1 stop7h 46mUnited Airlines
Deal found 7/29$277
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/247:20 amBOS - ONT
1 stop9h 52mHawaiian Airlines
lun. 9/297:47 pmONT - BOS
1 stop9h 13mHawaiian Airlines
Deal found 7/29$284
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.
mié. 8/276:00 amALB - ONT
1 stop8h 52mAmerican Airlines
mié. 9/312:45 pmONT - ALB
1 stop7h 58mAmerican Airlines
Deal found 7/30$287
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/46:45 amBOS - ONT
1 stop10h 45mSouthwest
lun. 12/811:15 amONT - BOS
1 stop8h 30mSouthwest
Deal found 7/30$293
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/97:20 amBOS - ONT
1 stop9h 52mAlaska Airlines
mié. 9/1711:39 amONT - BOS
1 stop9h 48mAlaska Airlines
Deal found 7/29$294
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.
mar. 9/25:35 amBOS - ONT
1 stop8h 00mDelta
mar. 9/97:05 amONT - BOS
1 stop8h 26mDelta
Deal found 7/30$296
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.
mar. 8/266:00 amALB - ONT
1 stop7h 35mDelta
mié. 8/2711:45 amONT - ALB
1 stop9h 14mDelta
Deal found 7/30$297
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/64:06 pmBDL - ONT
1 stop8h 18mAmerican Airlines
sáb. 9/1310:35 pmONT - BDL
1 stop7h 36mAmerican Airlines
Deal found 7/31$324
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/26:00 amBDL - ONT
1 stop7h 35mDelta
sáb. 9/611:45 amONT - BDL
1 stop8h 22mDelta
Deal found 7/28$325
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/214:53 pmBDL - ONT
1 stop8h 37mUnited Airlines
mié. 8/276:38 pmONT - BDL
2 stops11h 58mUnited Airlines
Deal found 7/31$330

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 julio 31, 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

sáb. 8/30

2:40 pm-9:59 pm

1 stop10h 19m

Ontario

vie. 9/5

10:56 pm-9:34 am

1 stop7h 38m

$256

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

sáb. 8/23

7:15 am-1:39 pm

1 stop9h 24m

Ontario

sáb. 8/30

12:22 pm-11:48 pm

1 stop8h 26m

$263

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

mar. 8/26

7:30 am-12:32 pm

1 stop8h 02m

Ontario

mar. 9/2

7:00 am-5:46 pm

1 stop7h 46m

$277

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

mié. 9/24

7:20 am-2:12 pm

1 stop9h 52m

Ontario

lun. 9/29

7:47 pm-8:00 am

1 stop9h 13m

$284

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

mié. 8/27

6:00 am-11:52 am

1 stop8h 52m

Ontario

mié. 9/3

12:45 pm-11:43 pm

1 stop7h 58m

$287

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

mar. 9/9

7:20 am-2:12 pm

1 stop9h 52m

Ontario

mié. 9/17

11:39 am-12:27 am

1 stop9h 48m

$294

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

mar. 9/2

5:35 am-10:35 am

1 stop8h 00m

Ontario

mar. 9/9

7:05 am-6:31 pm

1 stop8h 26m

$296

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

mar. 8/26

6:00 am-10:35 am

1 stop7h 35m

Ontario

mié. 8/27

11:45 am-11:59 pm

1 stop9h 14m

$297

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

sáb. 9/6

4:06 pm-9:24 pm

1 stop8h 18m

Ontario

sáb. 9/13

10:35 pm-9:11 am

1 stop7h 36m

$324

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

jue. 8/21

2:31 pm-10:20 pm

1 stop10h 49m

Ontario

mié. 8/27

7:05 am-8:28 pm

1 stop10h 23m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 31 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, August is the cheapest month in which you can book a flight from Massachusetts to Ontario (average of $246). Flying from Massachusetts to Ontario in March is currently the most expensive (average of $328). 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 julio 31, 2025.

When flying from Massachusetts to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated julio 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Massachusetts to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $139. Users have also found prices from $149 and $156 on Delta and Alaska 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, August is the cheapest month in which you can book a flight from Massachusetts to Ontario (average of $246). Flying from Massachusetts to Ontario in March is currently the most expensive (average of $328). 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$176Average$325FlexibilityNo cancel feeOn-time62%
DeltaCheapest$198Average$439FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$268Average$440FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$298Average$395FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$446FlexibilityNo cancel feeOn-time63%

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