Cheap flights from London, ON to Boston from C$ 679

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BOS
23 Jul — 30 Jul1
1 adult

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 18 July 2025.

Round-trip from

C$ 679

Popular in

September

Cheapest in

July

Average price

C$ 459
Air Canada
  • Air Canada
  • 31/8-7/9
  • 4 total stops
  • 17h 07m total
  • London to Boston
Highest demand for flights based on searches. 12% potential increase in price (C$ 152 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease (C$ 61 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 18 July 2025.

Sun 31/89:55 a.m.YXU - BOS
2 stops8h 05mAir Canada
Sun 7/96:00 a.m.BOS - YXU
2 stops9h 02mAir Canada
Deal found 17/7C$ 679
Sat 16/86:00 a.m.YXU - BOS
3 stops29h 31mMultiple Airlines
Sat 23/83:50 p.m.BOS - YXU
2 stops13h 24mMultiple Airlines
Deal found 17/7C$ 1,539

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 18 July 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

Sun 31/8

9:55 a.m.-6:00 p.m.

2 stops8h 05m

Boston Logan Intl

Sun 7/9

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

2 stops9h 02m

C$ 679

LondonBoston

YXU - BOS

YXUBOS

London

Sat 16/8

6:00 a.m.-11:31 a.m.

3 stops29h 31m

Boston Logan Intl

Sat 23/8

3:50 p.m.-5:14 a.m.

2 stops13h 24m

C$ 1,539

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/7

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$ 291). 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 18 July 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.

Overall

7.1

Entertainment

6.8

Food

6.3

Comfort

7.1

Boarding

7.3

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Jadi-Ann,Jun 2025

YYZ - KIN

The flight was smooth with minor turbulence. The staff was courteous. Since I have an aeroplan account I was able to use the inflight wifi. I wanted extra space and the window seat and I had to pay for that. At first, I was okay with that, however, I felt that it was the same distance between for everyone. Maybe I could be wrong.

Overall

7.1

Entertainment

6.8

Food

6.3

Comfort

7.1

Boarding

7.3

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Jadi-Ann,Jun 2025

YYZ - KIN

The flight was smooth with minor turbulence. The staff was courteous. Since I have an aeroplan account I was able to use the inflight wifi. I wanted extra space and the window seat and I had to pay for that. At first, I was okay with that, however, I felt that it was the same distance between for everyone. Maybe I could be wrong.

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

    Air Canada, at C$ 679, was found to be the cheapest airline from London, Ontario to Boston.. Air Canada is priced at 14% 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$ 291). 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
Waltham
Medford
Braintree
Somerville
Rockland
Chelsea
Warwick
Milford
Plymouth
Quincy
Old Orchard Beach
Revere
Hampton
Lynn
Merrimack
Andover
Watertown
Kennebunk
Amherst
Seekonk

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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 18 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 480AverageC$ 725FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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.

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