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Cheap flights from London, ON to Boston from C$ 393

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BOS
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

C$ 813

One-way from

C$ 393

Popular in

September

Cheapest in

April

Average price

C$ 1,303
Air Canada
  • Air Canada
  • 14/10-20/10
  • 4 total stops
  • 20h 32m total
  • London to Boston
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Air Canada
  • Air Canada
  • 31/10
  • 2 total stops
  • 9h 47m total
  • London to Boston
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 161 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease (C$ 65 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from London to Boston

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 17 September 2025.

Tue 14/109:55 a.m.YXU - BOS
2 stops11h 30mAir Canada
Mon 20/106:00 a.m.BOS - YXU
2 stops9h 02mAir Canada
Deal found 16/9C$ 813
Tue 7/106:15 a.m.YXU - BOS
1 stop5h 14mAir Canada
Mon 13/106:00 a.m.BOS - YXU
2 stops9h 02mAir Canada
Deal found 16/9C$ 838
Fri 31/109:25 a.m.YXU - BOS
2 stops7h 50mUnited Airlines
Fri 7/115:30 a.m.BOS - YXU
2 stops15h 51mUnited Airlines
Deal found 16/9C$ 940
Wed 8/106:15 a.m.YXU - BOS
1 stop3h 40mAir Canada
Fri 10/106:00 a.m.BOS - YXU
1 stop9h 02mAir Canada
Deal found 17/9C$ 1,145
Wed 8/106:00 a.m.YXU - BOS
3 stops32h 41mMultiple Airlines
Fri 10/1012:15 p.m.BOS - YXU
3 stops16h 57mMultiple Airlines
Deal found 17/9C$ 1,432

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 17 September 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

Tue 14/10

9:55 a.m.-10:39 p.m.

1 stop12h 44m

Boston Logan Intl

Mon 20/10

4:45 p.m.-9:27 p.m.

1 stop4h 42m

C$ 813

LondonBoston

YXU - BOS

YXUBOS

London

Tue 7/10

6:15 a.m.-11:29 a.m.

1 stop5h 14m

Boston Logan Intl

Mon 13/10

6:00 a.m.-3:02 p.m.

2 stops9h 02m

C$ 838

LondonBoston

YXU - BOS

YXUBOS

London

Fri 31/10

5:45 a.m.-9:57 a.m.

1 stop4h 12m

Boston Logan Intl

Fri 7/11

5:30 a.m.-9:21 p.m.

2 stops15h 51m

C$ 931

LondonBoston

YXU - BOS

YXUBOS

London

Wed 8/10

6:15 a.m.-9:55 a.m.

1 stop3h 40m

Boston Logan Intl

Fri 10/10

6:00 a.m.-3:02 p.m.

1 stop9h 02m

C$ 1,145

LondonBoston

YXU - BOS

YXUBOS

London

Wed 8/10

6:00 a.m.-2:41 p.m.

3 stops32h 41m

Boston Logan Intl

Fri 10/10

12:15 p.m.-5:12 a.m.

3 stops16h 57m

C$ 1,432

LondonBoston

YXU - BOS

YXUBOS

London

Fri 31/10

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

1 stop4h 57m

C$ 393

LondonBoston

YXU - BOS

YXUBOS

London

Fri 31/10

9:25 a.m.-5:14 p.m.

3 stops31h 49m

C$ 620

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

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, May is the cheapest month in which you can book a flight from London, Ontario to Boston (average of C$ 292). Flying from London, Ontario to Boston in April is currently the most expensive (average of C$ 350). 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 17 September 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
10,000 reviews
Check prices

Comfort

7.1

Crew

7.8

Food

6.3

Overall

7.1

Entertainment

6.8

Boarding

7.3

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
Check prices

Comfort

7.1

Crew

7.8

Food

6.3

Overall

7.1

Entertainment

6.8

Boarding

7.3

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 12h 44m. 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$ 637, was found to be the cheapest airline from London, Ontario to Boston.. Air Canada is priced at 24% 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, May is the cheapest month in which you can book a flight from London, Ontario to Boston (average of C$ 292). Flying from London, Ontario to Boston in April is currently the most expensive (average of C$ 350). 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
Braintree
Waltham
Somerville
Rockland
Chelsea
Warwick
Milford
Plymouth
Quincy
Hampton
Old Orchard Beach
Lynn
Revere
Merrimack
Kennebunk
Watertown
Lawrence
Sturbridge
Seekonk

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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 637AverageC$ 769FlexibilityNo 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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