HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$80+ Cheap flights from Boston to Ontario (BOS - 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Ontario with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Boston Logan Intl to Ontario are usually found in January or September, booked 86 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Boston to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Ontario (ONT). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(JetBlue Airways)

One-way from

$80
(Trip.com)

Popular in

October

Cheapest in

January

Average price

$440
Provider with most accurate pricing for Boston Logan Intl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Ontario flights.
Search Deals
From Boston Logan Intl to Ontario
Search Deals
One-way flight from Boston Logan Intl to Ontario
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Boston to Ontario

Cheapest flights from Boston to Ontario
Explore the most affordable flight options available from Boston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This JetBlue Airways deal was found by Cheapflights users on 2/19. 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/12:45 pmBOS - ONT
1 stop9h 37mJetBlue
Thu 5/810:40 pmONT - BOS
1 stop8h 09mJetBlue
Deal found 2/19$271
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Mon 3/245:30 pmBOS - ONT
1 stop20h 09mAlaska Airlines
Wed 4/26:00 amONT - BOS
1 stop22h 52mAlaska Airlines
Deal found 2/19$282
This Delta deal was found by Cheapflights users on 2/19. 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 3/224:25 pmBOS - ONT
1 stop8h 22mDelta
Wed 3/2611:42 amONT - BOS
1 stop9h 13mDelta
Deal found 2/19$316
This Travelocity deal was found by Cheapflights users on 2/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/196:00 amBOS - ONT
1 stop14h 59mMultiple Airlines
Mon 3/246:00 amONT - BOS
1 stop14h 59mMultiple Airlines
Deal found 2/19$318
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Tue 4/11:54 pmBOS - ONT
1 stop9h 27mUnited Airlines
Tue 4/83:55 pmONT - BOS
2 stops11h 03mUnited Airlines
Deal found 2/18$322
This American Airlines deal was found by Cheapflights users on 2/19. 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 3/192:31 pmBOS - ONT
1 stop9h 22mAmerican Airlines
Mon 3/247:35 pmONT - BOS
1 stop7h 32mAmerican Airlines
Deal found 2/19$330
This Southwest deal was found by Cheapflights users on 2/18. 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 5/105:15 pmBOS - ONT
1 stop7h 45mSouthwest
Sat 5/176:20 amONT - BOS
2 stops12h 55mSouthwest
Deal found 2/18$398

Find flights from Boston to Ontario within your budget

Customize your flight search to find flights from Boston 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 February 20, 2025.

Fly from

Boston

Fly to

Ontario

Route

Depart

Return

Price

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 5/1

2:45 pm-9:22 pm

1 stop9h 37m

Ontario

Thu 5/8

10:40 pm-9:49 am

1 stop8h 09m

$271

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 3/24

5:30 pm-10:39 am

1 stop20h 09m

Ontario

Wed 4/2

6:00 am-7:52 am

1 stop22h 52m

$282

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 3/22

4:25 pm-9:47 pm

1 stop8h 22m

Ontario

Wed 3/26

11:42 am-11:55 pm

1 stop9h 13m

$316

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 3/19

6:00 am-5:59 pm

1 stop14h 59m

Ontario

Mon 3/24

6:00 am-11:59 pm

1 stop14h 59m

$318

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 4/1

1:54 pm-8:21 pm

1 stop9h 27m

Ontario

Tue 4/8

3:55 pm-5:58 am

2 stops11h 03m

$322

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 3/19

2:31 pm-8:53 pm

1 stop9h 22m

Ontario

Mon 3/24

7:35 pm-6:07 am

1 stop7h 32m

$330

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 5/10

5:15 pm-10:00 pm

1 stop7h 45m

Ontario

Sat 5/17

6:20 am-10:15 pm

2 stops12h 55m

$398

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 3/19

6:00 am-5:59 pm

1 stop14h 59m

$80

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 5/2

2:45 pm-9:22 pm

1 stop9h 37m

$136

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 3/25

7:15 am-4:42 pm

1 stop12h 27m

$152

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 15 results
1
2

Compare providers for flights from Boston to Ontario

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 Boston to Ontario in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 Boston-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Ontario 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 Boston-Ontario 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 Boston to Ontario

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Ontario. Price data was last updated on February 14, 2025.

The price you pay for your flight from Boston to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Boston to Ontario (average of $246). Flying from Boston to Ontario in March is currently the most expensive (average of $315). 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 BOS to ONT?

Find hourly flight availability from Boston 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 February 20, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 23% on flights from Boston to Ontario by exploring options for tickets at noon.

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 February 20, 2025.
Read through reviews of airlines operating flights from Boston to Ontario, such as Southwest, Alaska Airlines and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,413 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,413 reviews
Southwest
8.1
Very good
4,413 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,691 reviews
Southwest
8.1
Very good
4,413 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,227 reviews
Southwest
8.1
Very good
4,413 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,413 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

JetBlue
7.4
Good
3,071 reviews
Southwest
8.1
Very good
4,413 reviews

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from Boston to Ontario. 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 Boston to Ontario round-trip?

    Currently priced at $271, JetBlue will fly you from Boston to Ontario and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and Delta - these airlines can fly you to your destination from $282 and $316, respectively. Users have found that JetBlue is 40% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $80. Users have also found prices from $136 and $152 on JetBlue and Delta, respectively.

  • Where are the most common layover locations when flying from Boston to Ontario?

    Boston to Ontario flights have a layover in Dallas most often.

  • What are some popular things to do or see while on a layover in Dallas?

    Most Dallas visitors opt to spend their time experiencing American Airlines Center, Dos Equis Pavilion, and Majestic Theatre. American Airlines Center, Dos Equis Pavilion and Majestic Theatre are located about 15.0 mi, 18.3 mi, and 16.1 mi, respectively from Dallas/Fort Worth if you are interested in checking them out. Travelers can book a car rental at Dallas/Fort Worth for about $50 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Boston to Ontario flights?

    Boston to Ontario flights have a layover in Phoenix least often.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Boston to Ontario (average of $246). Flying from Boston to Ontario in March is currently the most expensive (average of $315). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Las Vegas flights
Boston to Los Angeles flights
Boston to San Francisco flights
Boston to San Diego flights
Hartford to Las Vegas flights
Boston to Burbank flights
Hartford to Los Angeles flights
Boston to Santa Ana flights
Boston to Sacramento flights
Albany to Las Vegas flights
Boston to Oakland flights
Boston to Palm Springs flights
Boston to Reno flights
Boston to San Jose flights
Hartford to San Francisco flights
Hartford to San Diego flights
Albany to Los Angeles flights
Hartford to Ontario flights
Hartford to Santa Ana flights
Boston to Santa Barbara flights
Albany to San Francisco flights
Hartford to Burbank flights
Albany to San Diego flights
Hartford to Palm Springs flights
Hartford to Reno flights
Boston to Fresno flights
Boston to Long Beach flights
Hartford to San Jose flights
Hartford to Sacramento flights
Boston to Medford flights
Worcester to Los Angeles flights
Boston to San Luis Obispo flights
Boston to Monterey flights
Albany to Ontario flights
Worcester to Las Vegas flights
Albany to Burbank flights
West Tisbury to Las Vegas flights
Albany to Santa Ana flights
Albany to Sacramento flights
Albany to Santa Barbara flights
Albany to Reno flights
Albany to Palm Springs flights
Boston to Santa Rosa flights
Hartford to San Luis Obispo flights
Albany to San Luis Obispo flights
Hartford to Fresno flights
Hyannis to Las Vegas flights
Boston to Arcata flights
Boston to Redding flights

Top 6 airlines flying from Boston to Ontario

Discover the top 6 airlines that operate flights from Boston 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$159Average$282FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$176Average$325FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$288Average$484FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$294Average$485FlexibilityNo cancel feeOn-time69%
DeltaCheapest$295Average$457FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$296Average$467FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.