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$79+ Cheap flights from Ontario to Boston (ONT - BOS)

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOS
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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The best prices from Ontario to Boston Logan Intl are usually found in August or September, booked 68 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from Ontario to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$227
(Frontier)

One-way from

$79
(Trip.com)

Popular in

June

Cheapest in

August

Average price

$398
Provider with most accurate pricing for Ontario-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Ontario-Boston Logan Intl flights.
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From Ontario to Boston Logan Intl
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One-way flight from Ontario to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Ontario to Boston

Cheapest flights from Ontario to Boston
Explore the most affordable flight options available from Ontario to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This Frontier deal was found by Cheapflights users on 1/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:13 pmONT - BOS
1 stop14h 42mFrontier
Mon 4/1412:55 pmBOS - ONT
1 stop9h 03mFrontier
Deal found 1/28$227
This Alaska Airlines deal was found by Cheapflights users on 1/29. 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.
Fri 2/287:14 pmONT - BOS
1 stop9h 30mAlaska Airlines
Mon 3/37:59 pmBOS - ONT
1 stop18h 06mAlaska Airlines
Deal found 1/29$308
This Delta deal was found by Cheapflights users on 1/29. 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 2/285:10 pmONT - BOS
1 stop10h 25mDelta
Mon 3/36:35 pmBOS - ONT
1 stop8h 16mDelta
Deal found 1/29$309
This United Airlines deal was found by Cheapflights users on 1/29. 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.
Wed 3/53:30 pmONT - BOS
1 stop10h 32mUnited Airlines
Tue 3/115:30 amBOS - ONT
2 stops10h 14mUnited Airlines
Deal found 1/29$314
This American Airlines deal was found by Cheapflights users on 1/29. 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.
Wed 3/197:35 pmONT - BOS
2 stops9h 48mAmerican Airlines
Wed 3/267:25 amBOS - ONT
1 stop9h 35mAmerican Airlines
Deal found 1/29$318
This JetBlue deal was found by Cheapflights users on 1/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/710:40 pmONT - BOS
1 stop10h 02mJetBlue
Wed 5/212:45 pmBOS - ONT
1 stop9h 37mJetBlue
Deal found 1/28$340
This Southwest deal was found by Cheapflights users on 1/28. 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 2/278:50 amONT - BOS
1 stop7h 10mSouthwest
Sun 3/24:15 pmBOS - ONT
2 stops10h 15mSouthwest
Deal found 1/28$368

Find flights from Ontario to Boston within your budget

Customize your flight search to find flights from Ontario to Boston 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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 4/10

6:13 pm-11:55 am

1 stop14h 42m

Boston Logan Intl

Mon 4/14

12:55 pm-6:58 pm

1 stop9h 03m

$227

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 2/28

7:14 pm-7:44 am

1 stop9h 30m

Boston Logan Intl

Sun 3/2

7:59 pm-11:05 am

1 stop18h 06m

$308

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 2/28

5:10 pm-6:35 am

1 stop10h 25m

Boston Logan Intl

Mon 3/3

6:35 pm-11:51 pm

1 stop8h 16m

$309

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 3/5

3:30 pm-5:02 am

1 stop10h 32m

Boston Logan Intl

Tue 3/11

5:30 am-12:44 pm

2 stops10h 14m

$314

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 3/19

7:35 pm-8:23 am

2 stops9h 48m

Boston Logan Intl

Wed 3/26

7:25 am-2:00 pm

1 stop9h 35m

$318

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 5/7

10:40 pm-11:42 am

1 stop10h 02m

Boston Logan Intl

Wed 5/21

2:45 pm-9:22 pm

1 stop9h 37m

$340

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 2/27

8:50 am-7:00 pm

1 stop7h 10m

Boston Logan Intl

Sun 3/2

4:15 pm-11:30 pm

2 stops10h 15m

$368

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 3/5

12:59 am-8:13 am

2 stops28h 14m

$79

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 5/5

10:40 pm-11:42 am

1 stop10h 02m

$136

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 3/3

7:14 pm-7:44 am

1 stop9h 30m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 14 results
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Compare providers for flights from Ontario to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Boston in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Ontario 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.

Travel insights for flights from Ontario to Boston

Get recent, data-driven insights about flights from Ontario to Boston including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Boston. Price data was last updated on January 24, 2025.

Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Boston?

Currently, January is the cheapest month in which you can book a flight from Ontario to Boston (average of $218). Flying from Ontario to Boston in July is currently the most expensive (average of $311). 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 ONT to BOS?

Find hourly flight availability from Ontario to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 30, 2025.

It’s optimal to fly from Ontario to Boston in the afternoon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Ontario to Boston?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Boston. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Boston flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Boston by month

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

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

Temperature in Boston by month

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

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated January 30, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Ontario to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Overall

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Overall

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,686 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Overall

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,450 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Overall

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

JetBlue
7.4
Good
3,153 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Overall

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
8,906 reviews
Southwest
8.1
Very good
4,585 reviews

Food

7.1

Overall

8.1

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Related info for your journey

Find useful and relevant information for your journey from Ontario to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Ontario to Boston round-trip?

    According to our current data, Frontier ($227), Alaska Airlines ($308), and Delta ($309) offers the cheapest pricing from Ontario to Boston. Frontier is priced at 49% lower than the current average price of a flight leaving 3 months from now.

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

    $79 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and Alaska Airlines, with prices starting from $136 and $154, respectively.

  • Can I find deals for flights from Ontario to Boston that include hotel bookings?

    Yes. In addition to deals on Ontario to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Boston.

  • Can I find deals for business class flights from Ontario to Boston?

    Yes. Cheapflights offers flight deals from Ontario to Boston 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 Ontario to Boston?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Boston (average of $218). Flying from Ontario to Boston in July is currently the most expensive (average of $311). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Warwick
Sturbridge
Marlborough
Waltham
Brockton
Cambridge
Watertown
Framingham
Somerville
Chestnut Hill
Seekonk
Randolph
Lowell
West Yarmouth
Woburn
Saco
Seabrook
Salem
Brookline
Fall River

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Alternative routes for Ontario to Boston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to Boston

Discover the top 6 airlines that operate flights from Ontario to Boston. 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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$131Average$226FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$135Average$368FlexibilityNo cancel feeOn-time62%
DeltaCheapest$229Average$410FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$460FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$292Average$484FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$293Average$481FlexibilityNo cancel feeOn-time71%
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