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Cheap flights from London, ON to Boston from C$ 363

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BOS
6 Apr — 13 Apr1
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 7 March 2026.

Sun 19/48:10 p.m.
YXU
-
BOS
2 stops22h 02m
Multiple Airlines
Sun 26/46:30 p.m.
BOS
-
YXU
1 stop10h 50m
Multiple Airlines
Deal found 5/3C$ 624
Sun 19/45:10 a.m.
YXU
-
BOS
1 stop4h 49m
Air Canada
Sun 26/410:45 a.m.
BOS
-
YXU
1 stop6h 19m
Air Canada
Deal found 5/3C$ 626
Thu 2/45:10 a.m.
YXU
-
BOS
2 stops9h 42m
Air Canada
Thu 9/410:45 a.m.
BOS
-
YXU
1 stop6h 19m
Air Canada
Deal found 5/3C$ 631
Mon 16/35:40 p.m.
YXU
-
BOS
1 stop4h 57m
Air Canada
Mon 23/31:00 p.m.
BOS
-
YXU
1 stop4h 05m
Air Canada
Deal found 2/3C$ 635
Sun 24/59:30 a.m.
YXU
-
BOS
1 stop6h 26m
Air Canada
Thu 28/512:30 p.m.
BOS
-
YXU
1 stop5h 03m
Air Canada
Deal found 4/3C$ 667
Mon 30/39:40 a.m.
YXU
-
BOS
2 stops9h 32m
Air Canada
Tue 31/31:00 p.m.
BOS
-
YXU
1 stop4h 03m
Air Canada
Deal found 2/3C$ 671

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 7 March 2026.

Round-trip from

C$ 624

One-way from

C$ 363
WestJet
  • WestJet
  • 19/4-26/4
  • 3 total stops
  • 32h 52m total
  • London to Boston
Search Deals
Air Canada
  • Air Canada
  • 19/4
  • 1 total stop
  • 4h 49m 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 7 March 2026.
Use the filters below to find and compare flights from London to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonBoston

YXU - BOS

YXUBOS

London

Mon 30/3

5:40 p.m.-10:39 p.m.

1 stop4h 59m

Boston Logan Intl

Tue 31/3

10:45 a.m.-5:03 p.m.

1 stop6h 18m

C$ 665
Quickest round-trip

LondonBoston

YXU - BOS

YXUBOS

London

Sat 18/4

5:10 a.m.-9:59 a.m.

1 stop4h 49m

Boston Logan Intl

Sat 25/4

10:45 a.m.-5:04 p.m.

1 stop6h 19m

C$ 667

LondonBoston

YXU - BOS

YXUBOS

London

Sun 24/5

9:30 a.m.-3:56 p.m.

1 stop6h 26m

Boston Logan Intl

Thu 28/5

12:30 p.m.-5:33 p.m.

1 stop5h 03m

C$ 667

LondonBoston

YXU - BOS

YXUBOS

London

Thu 2/4

5:40 p.m.-10:39 p.m.

1 stop4h 59m

Boston Logan Intl

Thu 9/4

10:45 a.m.-5:04 p.m.

1 stop6h 19m

C$ 697
Cheapest one-way
Quickest one-way

LondonBoston

YXU - BOS

YXUBOS

London

Sun 19/4

5:10 a.m.-9:59 a.m.

1 stop4h 49m

C$ 363

LondonBoston

YXU - BOS

YXUBOS

London

Thu 16/4

9:25 a.m.-5:57 p.m.

2 stops8h 32m

C$ 368

LondonBoston

YXU - BOS

YXUBOS

London

Sat 28/3

9:40 a.m.-7:12 p.m.

2 stops9h 32m

C$ 375

LondonBoston

YXU - BOS

YXUBOS

London

Sun 19/4

8:10 p.m.-9:35 a.m.

3 stops37h 25m

C$ 402

LondonBoston

YXU - BOS

YXUBOS

London

Mon 20/4

5:10 a.m.-9:59 a.m.

1 stop4h 49m

C$ 436

LondonBoston

YXU - BOS

YXUBOS

London

Thu 16/4

8:10 p.m.-5:05 p.m.

3 stops20h 55m

C$ 444

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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$ 200). Flying from London, Ontario to Boston in December is currently the most expensive (average of C$ 324). 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 7 March 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
10,785 reviews
Check prices

Food

6.3

Entertainment

6.8

Crew

7.8

Overall

7.1

Comfort

7.1

Boarding

7.3

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
10,785 reviews
Air Canada
7.1
Good
10,785 reviews
Check prices

Food

6.3

Entertainment

6.8

Crew

7.8

Overall

7.1

Comfort

7.1

Boarding

7.3

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 4h 59m. 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$ 631, 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$ 200). Flying from London, Ontario to Boston in December is currently the most expensive (average of C$ 324). 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
Pawtucket
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 7 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 631AverageC$ 1,129FlexibilityNo 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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