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Ontario

$109+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$238
(Frontier)

One-way from

$109
(Frontier)

Popular in

December

Cheapest in

September

Average price

$364
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. 0% potential increase in price ($1 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 May 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 May 1, 2025.

This Frontier deal was found by Cheapflights users on 4/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/611:56 amBOS - ONT
1 stop10h 16mFrontier
Sun 6/88:07 pmONT - BOS
1 stop11h 54mFrontier
Deal found 4/30$238
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 5/246:45 amBOS - ONT
1 stop8h 05mAmerican Airlines
Sat 5/316:15 amONT - BOS
1 stop10h 02mAmerican Airlines
Deal found 4/30$269
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/287:30 amBOS - ONT
1 stop11h 20mAlaska Airlines
Wed 6/411:51 amONT - BOS
1 stop9h 15mAlaska Airlines
Deal found 4/30$274
This JetBlue deal was found by Cheapflights users on 4/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/101:45 pmBOS - ONT
1 stop11h 45mJetBlue
Sun 7/1311:45 pmONT - BOS
1 stop9h 06mJetBlue
Deal found 4/30$291
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 8/136:01 amALB - ONT
1 stop8h 51mAmerican Airlines
Wed 8/206:17 amONT - ALB
2 stops12h 22mAmerican Airlines
Deal found 4/30$292
This Delta deal was found by Cheapflights users on 4/30. 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 5/244:25 pmBOS - ONT
1 stop8h 51mDelta
Fri 5/3012:18 pmONT - BOS
1 stop7h 32mDelta
Deal found 4/30$297
This Southwest deal was found by Cheapflights users on 4/30. 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.
Sat 8/238:50 amALB - ONT
1 stop12h 25mSouthwest
Wed 8/276:45 amONT - ALB
1 stop7h 55mSouthwest
Deal found 4/30$302
This Delta deal was found by Cheapflights users on 4/29. 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.
Wed 5/286:00 amBDL - ONT
1 stop8h 08mDelta
Wed 6/412:18 pmONT - BDL
1 stop8h 41mDelta
Deal found 4/29$307
This Delta deal was found by Cheapflights users on 4/29. 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.
Wed 10/291:00 pmALB - ONT
1 stop9h 42mDelta
Wed 11/57:00 amONT - ALB
2 stops13h 08mDelta
Deal found 4/29$312
This Southwest deal was found by Cheapflights users on 4/30. 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.
Wed 9/312:40 pmBOS - ONT
2 stops9h 55mSouthwest
Thu 9/412:45 pmONT - BOS
1 stop7h 35mSouthwest
Deal found 4/30$323
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/107:00 amBOS - ONT
1 stop11h 32mHawaiian Airlines
Sat 5/174:45 pmONT - BOS
1 stop11h 35mHawaiian Airlines
Deal found 4/30$363
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 5/271:49 pmBDL - ONT
2 stops11h 08mAmerican Airlines
Sun 6/110:40 pmONT - BDL
1 stop7h 35mAmerican Airlines
Deal found 4/29$367

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 May 1, 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

Fri 5/30

12:01 pm-7:43 pm

1 stop10h 42m

Ontario

Thu 6/5

8:07 pm-11:01 am

1 stop11h 54m

$218

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 6/2

11:56 am-7:12 pm

1 stop10h 16m

Ontario

Wed 6/4

11:51 am-12:06 am

1 stop9h 15m

$267

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 5/24

6:45 am-11:50 am

1 stop8h 05m

Ontario

Sat 5/31

6:15 am-7:17 pm

1 stop10h 02m

$269

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 5/28

7:30 am-3:50 pm

1 stop11h 20m

Ontario

Wed 6/4

11:51 am-12:06 am

1 stop9h 15m

$274

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 6/17

1:45 pm-9:59 pm

1 stop11h 14m

Ontario

Mon 6/23

11:59 pm-12:03 pm

1 stop9h 04m

$291

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 5/27

4:47 pm-10:26 pm

1 stop8h 39m

Ontario

Mon 6/2

6:32 pm-6:01 am

1 stop8h 29m

$299

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 5/30

6:50 am-12:15 pm

1 stop8h 25m

Ontario

Wed 6/4

12:18 pm-12:33 am

1 stop9h 15m

$302

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

Wed 5/21

6:00 am-11:08 am

1 stop8h 08m

Ontario

Sat 5/24

12:18 pm-11:59 pm

1 stop8h 41m

$307

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 5/8

7:00 am-3:32 pm

1 stop11h 32m

Ontario

Sun 5/11

7:24 pm-7:55 am

1 stop9h 31m

$359

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

Tue 6/10

8:21 am-4:13 pm

2 stops10h 52m

Ontario

Fri 6/13

11:59 pm-12:57 pm

2 stops9h 58m

$362

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 36 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 May 1, 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 May 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Massachusetts to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

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
9,968 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,408 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

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 Frontier. According to our data, you can fly for as low as $109. Users have also found prices from $135 and $142 on Alaska Airlines and JetBlue, 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 6 airlines flying from Massachusetts to Ontario

Discover the top 6 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$159Average$306FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$176Average$325FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$300Average$440FlexibilityNo cancel feeOn-time71%
DeltaCheapest$302Average$443FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$306Average$466FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$316Average$481FlexibilityNo cancel feeOn-time69%

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