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$242+ Cheap flights from Boston (BOS) to London, ON (YXU)

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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YXU
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
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 July 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 9/66:30 pm
BOS
-
YXU
1 stop10h 50m
Multiple Airlines
Sun 9/136:10 am
YXU
-
BOS
2 stops33h 50m
Multiple Airlines
Deal found 7/25$456
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Sat 8/226:30 pm
BOS
-
YXU
1 stop10h 50m
WestJet
Tue 8/256:10 am
YXU
-
BOS
1 stop11h 30m
WestJet
Deal found 7/27$490
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/176:30 pm
BOS
-
YXU
1 stop10h 50m
WestJet
Tue 8/256:10 am
YXU
-
BOS
1 stop11h 30m
WestJet
Deal found 7/27$513
This Mytrip deal was found by Cheapflights users on 7/23. 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.
Mon 9/76:30 pm
BOS
-
YXU
1 stop10h 50m
Multiple Airlines
Mon 9/145:55 pm
YXU
-
BOS
2 stops16h 00m
Multiple Airlines
Deal found 7/23$520
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/176:30 pm
BOS
-
YXU
1 stop10h 50m
Multiple Airlines
Tue 8/258:40 pm
YXU
-
BOS
2 stops19h 20m
Multiple Airlines
Deal found 7/27$538
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Tue 8/186:30 pm
BOS
-
YXU
1 stop10h 50m
Multiple Airlines
Tue 8/258:40 pm
YXU
-
BOS
2 stops19h 20m
Multiple Airlines
Deal found 7/27$550
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Tue 8/186:30 pm
BOS
-
YXU
1 stop10h 50m
WestJet
Tue 8/256:10 am
YXU
-
BOS
1 stop11h 30m
WestJet
Deal found 7/27$557
This Mytrip deal was found by Cheapflights users on 7/27. 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 7/27$558
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/207:45 pm
BOS
-
YXU
2 stops18h 05m
Multiple Airlines
Tue 8/256:10 am
YXU
-
BOS
1 stop11h 30m
Multiple Airlines
Deal found 7/27$578

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 July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$456
(Kiwi.com)

One-way from

$242
(Kiwi.com)
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
One-way flight from Boston Logan Intl to London
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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 July 29, 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

Mon 9/7

6:30 pm-2:50 pm

2 stops20h 20m

London

Mon 9/14

5:55 pm-7:41 pm

3 stops25h 46m

$535

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 8/18

6:30 pm-5:20 am

1 stop10h 50m

London

Tue 8/25

6:10 am-5:40 pm

1 stop11h 30m

$557

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Sun 9/6

6:30 pm-5:20 am

1 stop10h 50m

London

Sun 9/13

6:10 am-5:40 pm

1 stop11h 30m

$594

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 8/27

7:45 pm-1:50 pm

2 stops18h 05m

London

Thu 9/3

8:40 pm-7:41 pm

3 stops23h 01m

$622

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 9/8

7:25 am-5:20 am

1 stop21h 55m

London

Tue 9/15

6:10 am-5:40 pm

1 stop11h 30m

$654

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Sun 9/6

7:10 am-5:20 am

3 stops22h 10m

London

Sun 9/13

6:10 am-9:05 am

3 stops26h 55m

$654

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 9/10

6:30 pm-5:20 am

1 stop10h 50m

London

Thu 9/17

6:10 am-5:40 pm

1 stop11h 30m

$712

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Fri 8/14

6:30 pm-4:45 pm

1 stop22h 15m

London

Fri 8/21

8:40 pm-11:47 am

2 stops15h 07m

$775
Quickest round-trip

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Sat 8/29

10:50 am-2:50 pm

1 stop4h 00m

London

Sun 8/30

5:40 am-9:53 am

1 stop4h 13m

$821

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

$821

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 July.
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?

    WestJet can get you from Boston to London, Ontario in just under 10h 50m. 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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