£87 Cheap Flights from Ontario (ONT) to Boston (BOS)

View £87 flight on Sat, 26 Sept 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Ontario (ONT) to Boston (BOS)

Prices were available within the past 7 days and start at £87 for one-way flights and £219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£219 Return, found 6 days ago
£219
Return
found 6 days ago
Select Delta flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £219 found 6 days ago
Delta
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£234 Return, found 6 days ago
£234
Return
found 6 days ago
Select Delta flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £234 found 6 days ago
Delta
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£250 Return, found 6 days ago
£250
Return
found 6 days ago
Select Delta flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £250 found 6 days ago
American Airlines
Sat, 2 May - Tue, 5 May
ONT
Ontario
BOS
Boston
£264 Return, found 5 days ago
£264
Return
found 5 days ago
Select American Airlines flight, departing Sat, 2 May from Ontario to Boston, returning Tue, 5 May, priced at £264 found 5 days ago
Delta
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£279 Return, found 6 days ago
£279
Return
found 6 days ago
Select Delta flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £279 found 6 days ago
American Airlines
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£286 Return, found 6 days ago
£286
Return
found 6 days ago
Select American Airlines flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £286 found 6 days ago
Delta
Sat, 2 May - Tue, 5 May
ONT
Ontario
BOS
Boston
£290 Return, found 5 days ago
£290
Return
found 5 days ago
Select Delta flight, departing Sat, 2 May from Ontario to Boston, returning Tue, 5 May, priced at £290 found 5 days ago
Delta
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£300 Return, found 6 days ago
£300
Return
found 6 days ago
Select Delta flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £300 found 6 days ago
American Airlines
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£307 Return, found 6 days ago
£307
Return
found 6 days ago
Select American Airlines flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £307 found 6 days ago
United
Mon, 17 Aug - Tue, 18 Aug
ONT
Ontario
BOS
Boston
£334 Return, found 6 days ago
£334
Return
found 6 days ago
Select United flight, departing Mon, 17 Aug from Ontario to Boston, returning Tue, 18 Aug, priced at £334 found 6 days ago

Frequently asked questions

How much is a flight from Ontario Airport to Logan Intl. Airport (BOS)?
Based on airfares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Ontario Airport and BOS start from £219. Make your booking today to secure the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from ONT to Logan Intl. Airport?
We understand that life can throw the odd curveball, so we've made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Los Angeles - Ontario Intl. Airport (ONT) to Logan Intl. Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ONT to Logan Intl. Airport (BOS) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to BOS?
The distance is around 4,100 kilometres. Travel pillow? Check. Warm clothes? Double check. We recommend you pack all the travel comforts for this long-haul Ontario to Boston flight.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Logan Intl. Airport?
Unfortunately, there aren't any airlines that directly fly between Los Angeles - Ontario Intl. Airport (ONT) and Logan Intl. Airport (BOS). You'll need to book a flight with one or more stops.
Are ONT to Logan Intl. Airport (BOS) flight tickets cheaper when they're purchased at the last minute?
Booking last minute from ONT to Logan Intl. Airport (BOS) can be hit-or-miss. You may be able to find a bargain, but then again, you could miss out altogether! If you'd rather start planning your trip early, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines advertise their prices that far in advance. Our advice? Check back often as updates are made regularly.

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
£219
Distance
4094 km
Average flight time
10 hours 35 mins

Explore a world of travel with Expedia

*Available to Expedia members.