£117 Cheap Flights from Ontario Intl. Airport (ONT) to Boston (BOS)

View £117 flight on Tue, 19 May 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £117 for one-way flights and £287 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 16 May - Sat, 23 May
ONT
Ontario
BOS
Boston
£287 Return, found 3 hours ago
£287
Return
found 3 hours ago
Select Alaska Airlines flight, departing Sat, 16 May from Ontario to Boston, returning Sat, 23 May, priced at £287 found 3 hours ago
Alaska Airlines
Sat, 16 May - Sat, 23 May
ONT
Ontario
BOS
Boston
£309 Return, found 3 hours ago
£309
Return
found 3 hours ago
Select Alaska Airlines flight, departing Sat, 16 May from Ontario to Boston, returning Sat, 23 May, priced at £309 found 3 hours ago
American Airlines
Sat, 16 May - Sat, 23 May
ONT
Ontario
BOS
Boston
£321 Return, found 3 hours ago
£321
Return
found 3 hours ago
Select American Airlines flight, departing Sat, 16 May from Ontario to Boston, returning Sat, 23 May, priced at £321 found 3 hours ago
American Airlines
Sat, 16 May - Sat, 23 May
ONT
Ontario
BOS
Boston
£346 Return, found 3 hours ago
£346
Return
found 3 hours ago
Select American Airlines flight, departing Sat, 16 May from Ontario to Boston, returning Sat, 23 May, priced at £346 found 3 hours ago
American Airlines
Sat, 16 May - Sat, 23 May
ONT
Ontario
BOS
Boston
£347 Return, found 3 hours ago
£347
Return
found 3 hours ago
Select American Airlines flight, departing Sat, 16 May from Ontario to Boston, returning Sat, 23 May, priced at £347 found 3 hours ago
Alaska Airlines
Wed, 30 Sept - Thu, 29 Oct
ONT
Ontario
BOS
Boston
£351 Return, found 4 hours ago
£351
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 30 Sept from Ontario to Boston, returning Thu, 29 Oct, priced at £351 found 4 hours ago
American Airlines
Sat, 13 Jun - Sun, 14 Jun
ONT
Ontario
BOS
Boston
£352 Return, found 12 hours ago
£352
Return
found 12 hours ago
Select American Airlines flight, departing Sat, 13 Jun from Ontario to Boston, returning Sun, 14 Jun, priced at £352 found 12 hours ago
Delta
Sat, 16 May - Sat, 23 May
ONT
Ontario
BOS
Boston
£376 Return, found 3 hours ago
£376
Return
found 3 hours ago
Select Delta flight, departing Sat, 16 May from Ontario to Boston, returning Sat, 23 May, priced at £376 found 3 hours ago
JetBlue Airways
Mon, 22 Jun - Tue, 23 Jun
ONT
Ontario
BOS
Boston
£376 Return, found 6 days ago
£376
Return
found 6 days ago
Select JetBlue Airways flight, departing Mon, 22 Jun from Ontario to Boston, returning Tue, 23 Jun, priced at £376 found 6 days ago
United
Sat, 16 May - Sat, 23 May
ONT
Ontario
BOS
Boston
£453 Return, found 3 hours ago
£453
Return
found 3 hours ago
Select United flight, departing Sat, 16 May from Ontario to Boston, returning Sat, 23 May, priced at £453 found 3 hours ago

Frequently asked questions

What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
September is typically the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.), with average return fares of approximately £283. This is about 15% 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.) include February and August.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
The best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.) is typically in September or August. These months offer the most budget-friendly options, with average return flights costing around £283. While these might be the cheapest times, it's always a good idea to book in advance to secure the best deals. This information is based on booking data from the past year.
How many flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
There are approximately 61 connecting flights per day from Ontario International Airport (ONT) to Logan International Airport (BOS). Some common connection points include Sky Harbor International (PHX), Seattle - Tacoma International (SEA), and McCarran International (LAS).
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
The earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.) typically departs at approximately 12:55 AM local time, operated by American Airlines. This is a seasonal service active in September and October. 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
You'll typically find the most flights from Los Angeles - Ontario Intl. (ONT) to Logan Intl. (BOS) on a Friday, with around 43 flights available. This gives you a good selection for your travel plans. Major airlines on this route include WN, AA, and AS. Looking at the overall week, Friday offers notably more flight options compared to other days.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
The most popular departure times for flights from Los Angeles - Ontario Intl. (ONT) to Logan Intl. (BOS) are in the morning, from 6am to 9am. About 28% of passengers prefer this time. Many major carriers, including American Airlines, United Airlines and Southwest Airlines, offer flights during this window. This timing works well for travellers who want to arrive in Boston early in the day, giving them plenty of time to settle in or start their activities.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
A flight from ONT to BOS with a layover takes around 7 hours 30 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
Select the "Business class" and "First class" filters when looking for ONT to BOS 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan 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 Boston from Los Angeles - Ontario Intl. (ONT)?
If you're planning to travel to Boston from Los Angeles - Ontario Intl. (ONT), you can fly directly into Logan Intl. (BOS) Some flights may connect through major hubs like Sky Harbor Intl. (PHX), Denver Intl. (DEN), McCarran Intl. (LAS) before reaching Boston. 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan Intl.)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Boston, MA (BOS-Logan 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
Ontario Intl. Airport
Destination airport
Logan Intl.
Airlines serving
American Airlines, Delta, United
Return price
£286
Distance
4094 km
Average flight time
10 hours 24 mins

Book with confidence

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

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

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 Ontario Intl. Airport (ONT) to Logan Intl. (BOS)

The easiest way to view the best deals on flights from Ontario Intl. Airport to Boston 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 Ontario Intl. Airport to Logan Intl. start at just £287 and range up to £453.  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Ontario Intl. Airport to Logan Intl. 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 Ontario Intl. Airport to Boston easily and book with confidence

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