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Cheap flights from London, ON to Boston from C$ 376

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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BOS
22 Feb — 1 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 23 January 2026.

Mon 2/39:25 a.m.
YXU
-
BOS
1 stop6h 32m
Air Canada
Wed 4/31:00 p.m.
BOS
-
YXU
1 stop4h 05m
Air Canada
Deal found 20/1C$ 801
Sat 7/39:25 a.m.
YXU
-
BOS
1 stop6h 32m
United Airlines
Sat 14/31:00 p.m.
BOS
-
YXU
1 stop4h 05m
United Airlines
Deal found 21/1C$ 885

Find 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 23 January 2026.

Round-trip from

C$ 801

One-way from

C$ 376
Air Canada
  • Air Canada
  • 2/3-4/3
  • 2 total stops
  • 10h 37m total
  • London to Boston
Search Deals
8/3
  • 8/3
  • 3 total stops
  • 44h 35m total
  • London to Boston
Search Deals

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 23 January 2026.
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

Mon 2/3

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

1 stop6h 32m

Boston Logan Intl

Wed 4/3

1:00 p.m.-5:05 p.m.

1 stop4h 05m

C$ 801

LondonBoston

YXU - BOS

YXUBOS

London

Sat 7/3

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

1 stop6h 32m

Boston Logan Intl

Sat 14/3

1:00 p.m.-5:05 p.m.

1 stop4h 05m

C$ 885

LondonBoston

YXU - BOS

YXUBOS

London

Sun 8/3

8:10 p.m.-4:45 p.m.

3 stops44h 35m

C$ 376

LondonBoston

YXU - BOS

YXUBOS

London

Sat 7/3

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

1 stop6h 32m

C$ 428

LondonBoston

YXU - BOS

YXUBOS

London

Sun 8/3

5:10 a.m.-10:02 a.m.

1 stop4h 52m

C$ 430

LondonBoston

YXU - BOS

YXUBOS

London

Sat 7/3

5:05 p.m.-10:41 a.m.

3 stops41h 36m

C$ 853

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/1

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, March is the cheapest month in which you can book a flight from London, Ontario to Boston (average of C$ 182). Flying from London, Ontario to Boston in January is currently the most expensive (average of C$ 341). 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 23 January 2026.
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
10,648 reviews
Check prices

Entertainment

6.8

Boarding

7.3

Food

6.3

Crew

7.8

Overall

7.1

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.
Air Canada
7.1
Good
10,648 reviews
Air Canada
7.1
Good
10,648 reviews
Check prices

Entertainment

6.8

Boarding

7.3

Food

6.3

Crew

7.8

Overall

7.1

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.

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 6h 32m. 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$ 639, was found to be the cheapest airline from London, Ontario to Boston..

  • 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, March is the cheapest month in which you can book a flight from London, Ontario to Boston (average of C$ 182). Flying from London, Ontario to Boston in January is currently the most expensive (average of C$ 341). 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
Merrimack
Chelsea
Milford
Braintree
Hampton
Old Orchard Beach
Revere
Waltham
Kennebunk
Watertown
Warwick
Lawrence
Seekonk
Nashua

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 23 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 639AverageC$ 1,143FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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