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$237+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YXU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$565
(Mytrip)

One-way from

$237
(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 September 16, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 10/296:16 amBOS - YXU
3 stops36h 56mMultiple Airlines
Wed 11/58:10 pmYXU - BOS
2 stops22h 00mMultiple Airlines
Deal found 9/14$565
This Air Canada deal was found by Cheapflights users on 9/13. 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 10/204:45 pmBOS - YXU
1 stop4h 42mAir Canada
Fri 10/249:55 amYXU - BOS
1 stop6h 04mAir Canada
Deal found 9/13$665
This Air Canada deal was found by Cheapflights users on 9/16. 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.
Wed 11/124:35 pmBOS - YXU
1 stop4h 46mAir Canada
Thu 11/135:15 amYXU - BOS
1 stop4h 42mAir Canada
Deal found 9/16$675
This Mytrip deal was found by Cheapflights users on 9/15. 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 10/3012:49 pmBOS - YXU
3 stops30h 23mMultiple Airlines
Thu 11/68:10 pmYXU - BOS
2 stops22h 00mMultiple Airlines
Deal found 9/15$678
This Air Canada deal was found by Cheapflights users on 9/14. 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.
Wed 10/295:30 amBOS - YXU
2 stops11h 36mAir Canada
Wed 11/55:45 amYXU - BOS
2 stops9h 07mAir Canada
Deal found 9/14$699
This KAYAK deal was found by Cheapflights users on 9/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:45 pmBOS - YXU
1 stop4h 44mAir Canada
Sun 9/286:10 amYXU - BOS
1 stop3h 45mAir Canada
Deal found 9/13$1,009

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 September 16, 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

Wed 10/29

6:16 am-7:12 pm

3 stops36h 56m

London

Wed 11/5

8:10 pm-6:10 pm

2 stops22h 00m

$565

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 10/30

10:45 am-5:06 pm

1 stop6h 21m

London

Thu 11/6

5:40 pm-10:37 pm

1 stop4h 57m

$665

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Wed 10/29

1:00 pm-5:06 pm

1 stop4h 06m

London

Wed 11/5

5:45 am-9:57 am

1 stop4h 12m

$665

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Mon 10/20

4:45 pm-9:27 pm

1 stop4h 42m

London

Fri 10/24

9:55 am-5:55 pm

2 stops8h 00m

$670

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Wed 11/12

4:35 pm-9:21 pm

1 stop4h 46m

London

Thu 11/13

5:15 am-9:57 am

1 stop4h 42m

$675

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Thu 10/30

12:49 pm-7:12 pm

3 stops30h 23m

London

Thu 11/6

8:10 pm-6:10 pm

2 stops22h 00m

$678

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Mon 12/15

6:00 am-6:34 am

2 stops48h 34m

$237

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Mon 12/15

4:35 pm-9:21 pm

1 stop4h 46m

$318

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Sat 12/27

4:35 pm-9:21 pm

1 stop4h 46m

$318

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Sat 12/27

6:10 pm-6:34 am

3 stops36h 24m

$896

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 September 16, 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 September 16, 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

Crew

7.8

Food

6.3

Entertainment

6.8

Comfort

7.1

Overall

7.1

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews

Boarding

7.3

Crew

7.8

Food

6.3

Entertainment

6.8

Comfort

7.1

Overall

7.1

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.

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 21m. 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.

See more FAQs

Traveling to a place near London?

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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$397Average$686FlexibilityNo cancel feeOn-time67%

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