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$137+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YXU
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap 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 20, 2025.

Round-trip from

$341
(oojo)

One-way from

$137
(Kiwi.com)
From Boston Logan Intl to London
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One-way flight from Boston Logan Intl to London
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Find 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 20, 2025.

This oojo deal was found by Cheapflights users on 8/19. 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.
Fri 10/36:30 pmBOS - YXU
1 stop10h 42mWestJet
Fri 10/106:00 amYXU - BOS
1 stop11h 40mWestJet
Deal found 8/19$341
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Fri 10/36:30 pmBOS - YXU
1 stop10h 42mMultiple Airlines
Fri 10/108:00 pmYXU - BOS
2 stops26h 52mMultiple Airlines
Deal found 8/19$461
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/186:30 pmBOS - YXU
1 stop10h 42mWestJet
Sun 9/218:00 pmYXU - BOS
2 stops22h 10mWestJet
Deal found 8/18$512
This Air Canada deal was found by Cheapflights users on 8/18. 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 9/1810:40 amBOS - YXU
1 stop4h 37mAir Canada
Sun 9/216:10 amYXU - BOS
1 stop5h 19mAir Canada
Deal found 8/18$665
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:40 amBOS - YXU
1 stop4h 22mUnited Airlines
Thu 10/99:55 amYXU - BOS
1 stop6h 04mUnited Airlines
Deal found 8/18$783
This Air Canada deal was found by Cheapflights users on 8/18. 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.
Mon 9/112:15 pmBOS - YXU
1 stop4h 52mAir Canada
Thu 9/46:15 amYXU - BOS
1 stop5h 14mAir Canada
Deal found 8/18$908

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 20, 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

Fri 10/3

6:30 pm-5:12 am

1 stop10h 42m

London

Fri 10/10

6:00 am-5:40 pm

1 stop11h 40m

$341

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Fri 10/3

6:30 pm-5:12 am

1 stop10h 42m

London

Fri 10/10

8:00 pm-10:52 pm

2 stops26h 52m

$461

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 9/18

6:30 pm-5:12 am

1 stop10h 42m

London

Sun 9/21

8:00 pm-6:10 pm

2 stops22h 10m

$512

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 9/18

10:40 am-3:17 pm

1 stop4h 37m

London

Sun 9/21

6:10 am-11:29 am

1 stop5h 19m

$665

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 10/2

10:40 am-3:02 pm

1 stop4h 22m

London

Thu 10/9

9:55 am-3:59 pm

1 stop6h 04m

$783

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Sat 10/4

4:45 pm-9:27 pm

1 stop4h 42m

London

Sat 10/11

6:15 am-11:29 am

1 stop5h 14m

$783

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Fri 10/3

10:40 am-3:02 pm

1 stop4h 22m

London

Fri 10/10

9:55 am-3:59 pm

1 stop6h 04m

$783

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 10/2

6:30 pm-5:12 am

1 stop10h 42m

$137

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 10/2

10:53 am-5:12 am

2 stops18h 19m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

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 time of day to fly from BOS to YXU?

Find hourly flight availability from Boston to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

It’s optimal to fly from Boston to London, Ontario in the morning. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight at noon.

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 August 20, 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
10,000 reviews

Boarding

7.3

Food

6.3

Overall

7.1

Crew

7.8

Entertainment

6.8

Comfort

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

AMS - YYZ

The cabin crew was excellent especially considering the stress they've been under and that their not paid for all the preflight work they do. The entertainment screens in the bank of seats that I was sitting in didn't work for the entire 8 hour flight. I consider this a failure on management's part to properly maintain their aircraft to ensure a pleasant experience for their customers.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews

Boarding

7.3

Food

6.3

Overall

7.1

Crew

7.8

Entertainment

6.8

Comfort

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

AMS - YYZ

The cabin crew was excellent especially considering the stress they've been under and that their not paid for all the preflight work they do. The entertainment screens in the bank of seats that I was sitting in didn't work for the entire 8 hour flight. I consider this a failure on management's part to properly maintain their aircraft to ensure a pleasant experience for their customers.

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 42m. 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 ($254), 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.

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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$254Average$679FlexibilityNo cancel feeOn-time67%

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