£177 Cheap Flights from Boston (BOS) to Ontario Intl. Airport (ONT)

View £177 flight on Thu, 14 May 2026Opens in a new window

Popular airlines from Logan International Airport (BOS) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Boston (BOS) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at £177 for one-way flights and £393 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 23 Jun - Sat, 27 Jun
BOS
Boston
ONT
Ontario
£393 Return, found 6 days ago
£393
Return
found 6 days ago
Select American Airlines flight, departing Tue, 23 Jun from Boston to Ontario, returning Sat, 27 Jun, priced at £393 found 6 days ago
Delta
Sun, 5 Jul - Mon, 6 Jul
BOS
Boston
ONT
Ontario
£400 Return, found 3 days ago
£400
Return
found 3 days ago
Select Delta flight, departing Sun, 5 Jul from Boston to Ontario, returning Mon, 6 Jul, priced at £400 found 3 days ago
American Airlines
Sun, 5 Jul - Mon, 6 Jul
BOS
Boston
ONT
Ontario
£404 Return, found 3 days ago
£404
Return
found 3 days ago
Select American Airlines flight, departing Sun, 5 Jul from Boston to Ontario, returning Mon, 6 Jul, priced at £404 found 3 days ago
American Airlines
Tue, 23 Jun - Sat, 27 Jun
BOS
Boston
ONT
Ontario
£418 Return, found 6 days ago
£418
Return
found 6 days ago
Select American Airlines flight, departing Tue, 23 Jun from Boston to Ontario, returning Sat, 27 Jun, priced at £418 found 6 days ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
BOS
Boston
ONT
Ontario
£420 Return, found 3 days ago
£420
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Boston to Ontario, returning Fri, 19 Jun, priced at £420 found 3 days ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
BOS
Boston
ONT
Ontario
£424 Return, found 3 days ago
£424
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Boston to Ontario, returning Fri, 19 Jun, priced at £424 found 3 days ago
American Airlines
Sun, 5 Jul - Mon, 6 Jul
BOS
Boston
ONT
Ontario
£433 Return, found 3 days ago
£433
Return
found 3 days ago
Select American Airlines flight, departing Sun, 5 Jul from Boston to Ontario, returning Mon, 6 Jul, priced at £433 found 3 days ago
American Airlines
Tue, 23 Jun - Sat, 27 Jun
BOS
Boston
ONT
Ontario
£440 Return, found 6 days ago
£440
Return
found 6 days ago
Select American Airlines flight, departing Tue, 23 Jun from Boston to Ontario, returning Sat, 27 Jun, priced at £440 found 6 days ago
American Airlines
Sun, 5 Jul - Mon, 6 Jul
BOS
Boston
ONT
Ontario
£450 Return, found 3 days ago
£450
Return
found 3 days ago
Select American Airlines flight, departing Sun, 5 Jul from Boston to Ontario, returning Mon, 6 Jul, priced at £450 found 3 days ago
United
Thu, 14 May - Thu, 21 May
BOS
Boston
ONT
Ontario
£596 Return, found 12 hours ago
£596
Return
found 12 hours ago
Select United flight, departing Thu, 14 May from Boston to Ontario, returning Thu, 21 May, priced at £596 found 12 hours ago

Frequently asked questions

What is the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
September is typically the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), with average return fares of approximately £526. This is about 12% lower than the average price throughout the year. September often sees lower prices as the summer travel rush ends and before the holiday season begins, leading to reduced demand. Other cheap months to fly from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) include February and July.
How do I find cheap flights from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
To find a cheap flight from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Based on booking data from the past year, the cheapest months to fly from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) are typically September and February, with average return flights around £526. While August is the most popular month for this route, offering plenty of flight options, it's not the cheapest. If you're looking for the best value, aiming for September or February will likely get you a better deal on your return flight.
How many flights per day from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
There are approximately 100 connecting flights per day from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.). Some common connection points include Seattle - Tacoma Intl. (SEA), Baltimore Washington Intl. Thurgood Marshall (BWI), and Midway Intl. (MDW).
What is the earliest flight from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The earliest flight from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) typically departs at approximately 5:00 AM local time. This is a seasonal service active in July and August, operated by American Airlines. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
You'll typically find the most flights from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) on a Thursday, with around 59 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, American Airlines, and Southwest Airlines. Thursdays offer notably more flight options compared to other days of the week.
What are the most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) are in the early morning, from 6am to 9am. Approximately 30% of passengers prefer this time window. Many major carriers, including American Airlines, Southwest Airlines and Delta Air Lines, offer flights during this window. Many travelers prefer these early morning flights because they allow you to arrive at your destination with plenty of time to start your day.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
A flight from BOS to ONT with a layover takes around 8 hours 50 minutes, with the route covering approximately 2,559 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Select the "Business class" and "First class" filters when looking for BOS to ONT flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight with Expedia?
It's easy to earn miles on a Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Ontario from Logan Intl. (BOS)?
If you're planning to travel to Ontario from Logan Intl. (BOS), you can fly directly into Los Angeles - Ontario Intl. (ONT) Some flights may connect through major hubs like Midway Intl. (MDW), Baltimore Washington Intl. Thurgood Marshall (BWI), Seattle - Tacoma Intl. (SEA) before reaching Ontario. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) at the last minute?
Typically, booking a last minute flight from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package?
Securing a Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
If you booked your Boston, MA (BOS-Logan Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Logan Intl.
Destination airport
Ontario Intl. Airport
Airlines serving
American Airlines, Delta, United
Return price
£393
Distance
4094 km

Book with confidence

Compare flights from Boston to Ontario Intl. Airport easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Boston to Ontario Intl. Airport. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Ontario Intl. Airport in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Logan Intl. to Ontario Intl. Airport.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Logan Intl. (BOS) to Ontario Intl. Airport (ONT)

The easiest way to view the best deals on flights from Boston to Ontario Intl. Airport today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Logan Intl. to Ontario Intl. Airport start at just £393 and range up to £596.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Boston and Ontario Intl. Airport
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Boston to Ontario Intl. Airport flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Logan Intl. to Ontario Intl. Airport for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Boston to Ontario Intl. Airport easily and book with confidence

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