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$652+ Cheap flights from Boston (BOS) to London, ON (YXU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YXU
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
1 adult, Economy
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Cheap flight deals from Boston to London

Cheapest flights from Boston to London
Explore the most affordable flight options available from Boston to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 4, 2026.

This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am
BOS
-
YXU
3 stops22h 20m
Multiple Airlines
Thu 9/175:55 pm
YXU
-
BOS
2 stops24h 40m
Multiple Airlines
Deal found 7/30$652
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:30 pm
BOS
-
YXU
2 stops18h 20m
Multiple Airlines
Thu 9/106:10 am
YXU
-
BOS
1 stop11h 30m
Multiple Airlines
Deal found 8/3$701
This Air Canada deal was found by Cheapflights users on 7/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:30 pm
BOS
-
YXU
1 stop5h 13m
Air Canada
Thu 9/175:40 am
YXU
-
BOS
1 stop4h 15m
Air Canada
Deal found 7/31$724
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:30 pm
BOS
-
YXU
1 stop10h 50m
WestJet
Thu 9/175:55 pm
YXU
-
BOS
1 stop23h 45m
WestJet
Deal found 7/30$728

Find flight deals from Boston to London

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to London (YXU). 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 August 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$652
(Mytrip)
Provider with most accurate pricing for Boston Logan Intl-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-London flights.
Search Deals
From Boston Logan Intl to London
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to London 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 August 4, 2026.
Use the filters below to find and compare flights from Boston to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 9/10

7:30 pm-5:20 am

2 stops33h 50m

London

Thu 9/17

5:55 pm-6:35 pm

2 stops24h 40m

$697

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 9/3

4:45 pm-1:50 pm

3 stops21h 05m

London

Thu 9/10

6:10 am-9:05 am

3 stops26h 55m

$723
Quickest round-trip

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 9/3

4:55 pm-9:40 pm

1 stop4h 45m

London

Thu 9/10

6:20 pm-10:40 pm

1 stop4h 20m

$724

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 8/27

12:30 pm-5:42 pm

1 stop5h 12m

London

Mon 8/31

10:05 am-4:03 pm

1 stop5h 58m

$763

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Sat 8/22

10:50 am-2:50 pm

1 stop4h 00m

London

Wed 8/26

5:40 am-11:52 am

1 stop6h 12m

$801

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Sorted by cheapest first

Compare providers for flights from Boston to London

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

Have a flexible travel schedule? Discover the best time to fly to London 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.

Related info for your journey

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

  • How long is the flight from Boston to London, Ontario?

    Air Canada can get you from Boston to London, Ontario in just under 4h 45m. Your travel time can differ by up to . Boston and London, Ontario are separated by a distance of 516 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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