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Ontario

$135+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$268
(Frontier)

One-way from

$135
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$384
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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High demand for flights, 0% potential price rise
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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 March 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 March 28, 2025.

This Frontier deal was found by Cheapflights users on 3/27. 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.
Thu 4/2412:29 pmBOS - ONT
1 stop9h 11mFrontier
Sat 5/36:47 pmONT - BOS
1 stop14h 20mFrontier
Deal found 3/27$268
This JetBlue deal was found by Cheapflights users on 3/27. 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.
Sat 5/103:10 pmBOS - ONT
1 stop9h 01mJetBlue
Fri 5/3010:59 pmONT - BOS
1 stop7h 26mJetBlue
Deal found 3/27$271
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/245:45 pmBOS - ONT
1 stop9h 12mAlaska Airlines
Sat 5/315:55 pmONT - BOS
1 stop9h 15mAlaska Airlines
Deal found 3/27$279
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Wed 5/141:33 pmBOS - ONT
1 stop11h 27mUnited Airlines
Sat 5/246:41 pmONT - BOS
1 stop8h 13mUnited Airlines
Deal found 3/26$283
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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.
Mon 4/287:00 amBOS - ONT
1 stop11h 32mHawaiian Airlines
Wed 4/3011:46 amONT - BOS
1 stop9h 13mHawaiian Airlines
Deal found 3/27$291
This Delta deal was found by Cheapflights users on 3/26. 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 4/165:40 amBOS - ONT
1 stop8h 17mDelta
Mon 4/2810:15 pmONT - BOS
1 stop8h 17mDelta
Deal found 3/26$297
This Expedia deal was found by Cheapflights users on 3/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/267:00 amBOS - ONT
1 stop11h 32mMultiple Airlines
Sat 5/36:47 pmONT - BOS
1 stop14h 20mMultiple Airlines
Deal found 3/27$304
This Delta deal was found by Cheapflights users on 3/26. 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 4/246:05 amALB - ONT
1 stop7h 52mDelta
Thu 5/110:15 pmONT - ALB
1 stop10h 10mDelta
Deal found 3/26$343
This American Airlines deal was found by Cheapflights users on 3/26. 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 4/246:16 pmBDL - ONT
1 stop8h 34mAmerican Airlines
Mon 4/2810:40 pmONT - BDL
1 stop7h 22mAmerican Airlines
Deal found 3/26$343
This American Airlines deal was found by Cheapflights users on 3/27. 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 5/132:26 pmBOS - ONT
2 stops10h 31mAmerican Airlines
Mon 5/1910:40 pmONT - BOS
1 stop7h 40mAmerican Airlines
Deal found 3/27$352
This American Airlines deal was found by Cheapflights users on 3/27. 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 5/106:00 amALB - ONT
2 stops10h 52mAmerican Airlines
Sat 5/1712:45 pmONT - ALB
1 stop7h 33mAmerican Airlines
Deal found 3/27$352
This Southwest deal was found by Cheapflights users on 3/26. 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.
Fri 4/253:30 pmBOS - ONT
1 stop10h 30mSouthwest
Fri 5/27:20 pmONT - BOS
2 stops9h 55mSouthwest
Deal found 3/26$378

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 March 28, 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 4/24

12:29 pm-6:40 pm

1 stop9h 11m

Ontario

Sat 5/3

6:47 pm-12:07 pm

1 stop14h 20m

$268

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 5/10

3:10 pm-9:11 pm

1 stop9h 01m

Ontario

Fri 5/30

10:59 pm-9:25 am

1 stop7h 26m

$271

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 5/24

5:45 pm-11:57 pm

1 stop9h 12m

Ontario

Sat 5/31

5:55 pm-6:10 am

1 stop9h 15m

$279

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 5/14

1:33 pm-10:00 pm

1 stop11h 27m

Ontario

Sat 5/24

6:41 pm-5:54 am

1 stop8h 13m

$283

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 4/28

7:00 am-3:32 pm

1 stop11h 32m

Ontario

Wed 4/30

11:46 am-11:59 pm

1 stop9h 13m

$291

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 4/16

5:40 am-10:57 am

1 stop8h 17m

Ontario

Mon 4/28

10:15 pm-9:32 am

1 stop8h 17m

$297

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 4/26

7:00 am-3:32 pm

1 stop11h 32m

Ontario

Sat 5/3

6:47 pm-12:07 pm

1 stop14h 20m

$304

HartfordOntario

BDL - ONT

BDLONT

Hartford Bradley Intl

Thu 4/24

6:16 pm-11:50 pm

1 stop8h 34m

Ontario

Mon 4/28

10:40 pm-9:02 am

1 stop7h 22m

$343

AlbanyOntario

ALB - ONT

ALBONT

Albany Intl

Thu 4/24

6:05 am-10:57 am

1 stop7h 52m

Ontario

Thu 5/1

10:15 pm-11:25 am

1 stop10h 10m

$343

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 5/13

2:26 pm-9:57 pm

2 stops10h 31m

Ontario

Mon 5/19

10:40 pm-9:20 am

1 stop7h 40m

$352

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 37 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 $326). 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 March 28, 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 March 28, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 $135. Users have also found prices from $137 and $138 on Alaska Airlines and Frontier, 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 $326). 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$159Average$282FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$176Average$325FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$294Average$482FlexibilityNo cancel feeOn-time69%
DeltaCheapest$295Average$436FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$297Average$450FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$461FlexibilityNo cancel feeOn-time63%
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