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$372+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YXU
ene. 8 — ene. 151
jue. 1/8
jue. 1/15
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 diciembre 9, 2025.

This Air Canada deal was found by Cheapflights users on 12/8. 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.
sáb. 12/206:15 amBOS - YXU
1 stop10h 50mAir Canada
dom. 12/215:10 amYXU - BOS
1 stop4h 47mAir Canada
Deal found 12/8$1,243

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 diciembre 9, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$664
(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 diciembre 9, 2025.
Use the filters below to find and compare flights from Boston to London that are best for you.

Fly from

Boston

Fly to

London

Route

Depart

Return

Price

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

mié. 1/21

5:34 am-6:34 am

3 stops25h 00m

London

mié. 1/28

8:10 pm-8:30 pm

3 stops24h 20m

$664

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

mié. 1/21

10:45 am-5:05 pm

1 stop6h 20m

London

mié. 1/28

5:10 am-10:02 am

1 stop4h 52m

$697

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

vie. 1/23

10:45 am-5:05 pm

1 stop6h 20m

London

lun. 1/26

5:10 am-10:02 am

1 stop4h 52m

$697

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

dom. 1/18

10:45 am-5:05 pm

1 stop6h 20m

London

mié. 1/21

9:50 am-7:42 pm

2 stops9h 52m

$705

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

dom. 1/18

1:24 pm-9:20 pm

2 stops7h 56m

London

mié. 1/21

9:50 am-6:32 pm

2 stops8h 42m

$808

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

sáb. 12/20

6:15 am-5:05 pm

1 stop10h 50m

London

dom. 12/21

5:10 am-9:57 am

1 stop4h 47m

$1,243

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

vie. 1/23

1:00 pm-5:05 pm

1 stop4h 05m

$372

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-London, Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from Boston to London

What is the cheapest month to book a flight from Boston to London, Ontario?

Currently, April is the cheapest month in which you can book a flight from Boston to London, Ontario (average of $116). Flying from Boston to London, Ontario in June is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated diciembre 9, 2025.
Peruse reviews from past customers who have flown with Air Canada from Boston to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,515 reviews

Comfort

7.1

Crew

7.8

Food

6.3

Entertainment

6.8

Overall

7.1

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given
Air Canada
7.1
Good
10,515 reviews
Air Canada
7.1
Good
10,515 reviews

Comfort

7.1

Crew

7.8

Food

6.3

Entertainment

6.8

Overall

7.1

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

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 6h 20m. Your travel time can differ by up to . Boston and London, Ontario are separated by a distance of 516 mi.

  • What is the cheapest airline to fly from Boston to London, Ontario round-trip?

    According to our current data, Air Canada ($397), offers the cheapest pricing from Boston to London, Ontario.

  • 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.

  • What is the cheapest month to book a flight from Boston to London, Ontario?

    Currently, April is the cheapest month in which you can book a flight from Boston to London, Ontario (average of $116). Flying from Boston to London, Ontario in June is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend

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Top airline flying from Boston to London

Discover the top airline that operate flights from Boston to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$478Average$688FlexibilityNo cancel feeOn-time67%

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