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Cheap flights from London, ON to Boston from C$ 794

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BOS
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from London to Boston

Enter your travel dates to find the best prices.

Cheapest flights from London to Boston
Explore the most affordable flight options available from London to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 October 2025.

Wed 10/125:10 a.m.YXU - BOS
1 stop4h 47mAir Canada
Wed 17/126:15 a.m.BOS - YXU
1 stop10h 50mAir Canada
Deal found 28/10C$ 794
Thu 20/115:15 a.m.YXU - BOS
2 stops9h 37mAir Canada
Sat 22/1110:15 a.m.BOS - YXU
2 stops11h 06mAir Canada
Deal found 28/10C$ 822
Thu 11/125:40 p.m.YXU - BOS
1 stop4h 57mAir Canada
Thu 18/126:15 a.m.BOS - YXU
1 stop10h 50mAir Canada
Deal found 27/10C$ 875
Thu 20/118:10 p.m.YXU - BOS
3 stops27h 43mMultiple Airlines
Sat 22/113:40 p.m.BOS - YXU
3 stops27h 32mMultiple Airlines
Deal found 28/10C$ 889
Thu 20/115:15 a.m.YXU - BOS
1 stop4h 42mAir Canada
Thu 20/111:00 p.m.BOS - YXU
1 stop4h 05mAir Canada
Deal found 28/10C$ 956
Tue 30/125:40 p.m.YXU - BOS
1 stop4h 57mAir Canada
Sun 4/17:55 p.m.BOS - YXU
1 stop12h 51mAir Canada
Deal found 28/10C$ 1,157
Thu 11/128:10 p.m.YXU - BOS
2 stops22h 01mMultiple Airlines
Thu 18/1210:20 a.m.BOS - YXU
3 stops20h 14mMultiple Airlines
Deal found 27/10C$ 1,192

Cheap flight deals from London to Boston

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to Boston (BOS). 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 29 October 2025.

Round-trip from

C$ 794

Popular in

January

Cheapest in

February

Average price

C$ 724
Air Canada
  • Air Canada
  • 10/12-17/12
  • 2 total stops
  • 15h 37m total
  • London to Boston
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 4% potential price decrease (C$ 55 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Boston 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 629,999 searches. Data last updated 29 October 2025.
Use the filters below to find and compare flights from London to Boston that are best for you.

Fly from

London

Fly to

Boston

Route

Depart

Return

Price

LondonBoston

YXU - BOS

YXUBOS

London

Wed 10/12

5:10 a.m.-9:57 a.m.

1 stop4h 47m

Boston Logan Intl

Wed 17/12

6:15 a.m.-5:05 p.m.

1 stop10h 50m

C$ 794

LondonBoston

YXU - BOS

YXUBOS

London

Thu 11/12

9:25 a.m.-3:57 p.m.

1 stop6h 32m

Boston Logan Intl

Thu 18/12

5:30 a.m.-5:05 p.m.

2 stops11h 35m

C$ 801

LondonBoston

YXU - BOS

YXUBOS

London

Thu 20/11

9:25 a.m.-3:57 p.m.

1 stop6h 32m

Boston Logan Intl

Sat 22/11

10:45 a.m.-5:05 p.m.

1 stop6h 20m

C$ 822

LondonBoston

YXU - BOS

YXUBOS

London

Thu 20/11

8:10 p.m.-11:53 p.m.

3 stops27h 43m

Boston Logan Intl

Sat 22/11

3:40 p.m.-7:12 p.m.

3 stops27h 32m

C$ 889

LondonBoston

YXU - BOS

YXUBOS

London

Tue 30/12

5:40 p.m.-10:37 p.m.

1 stop4h 57m

Boston Logan Intl

Sun 4/1

7:55 p.m.-8:46 a.m.

1 stop12h 51m

C$ 1,157

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Best time to book a flight from London to Boston

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

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

Currently, December is the cheapest month in which you can book a flight from London, Ontario to Boston (average of C$ 173). Flying from London, Ontario to Boston in February is currently the most expensive (average of C$ 340). 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 Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated 29 October 2025.
Read reviews from past customers who have flown Air Canada from London to Boston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,372 reviews
Check prices

Food

6.3

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Overall

7.1

Crew

7.8

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
10,372 reviews
Air Canada
7.1
Good
10,372 reviews
Check prices

Food

6.3

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Overall

7.1

Crew

7.8

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 London to Boston. 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 London, Ontario to Boston?

    There are many flights that can get you from London, Ontario to Boston in 4h 47m. Fly via Air Canada to get the fastest option. There are 830 km between London, Ontario and Boston.

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

    Air Canada, at C$ 434, was found to be the cheapest airline from London, Ontario to Boston.. Air Canada is priced at 49% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Boston 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 London, Ontario to Boston?

    Currently, December is the cheapest month in which you can book a flight from London, Ontario to Boston (average of C$ 173). Flying from London, Ontario to Boston in February is currently the most expensive (average of C$ 340). 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

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Chelsea
Waltham
Warwick
Milford
Braintree
Plymouth
Hampton
Old Orchard Beach
Revere
Merrimack
Kennebunk
Watertown
Sturbridge
Lawrence
Seekonk
Nashua

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from London to Boston

Discover the top airline that operate flights from London to Boston. 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 629,999 searches. Data last updated 29 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 434AverageC$ 1,157FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from London to Boston?

Deals for London to Boston flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Boston?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Boston.

Can Cheapflights find flights from London to Boston with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Boston flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to Boston become cheaper?

Yes! Start tracking prices for London to Boston flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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