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Cheap flights from London, ON to Boston from C$ 334

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 24/7. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BOS
17 Jun — 24 Jun1
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 12 June 2025.

Round-trip from

C$ 591

One-way from

C$ 334

Popular in

January

Cheapest in

April

Average price

C$ 595
Air Canada
  • Air Canada
  • 25/6-20/7
  • 3 total stops
  • 12h 52m total
  • London to Boston
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Air Canada
  • Air Canada
  • 24/7
  • 1 total stop
  • 5h 13m total
  • London to Boston
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 61 potential savings vs. average RT price).
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Average for round-trip flights in June 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 12 June 2025.

Wed 25/66:15 a.m.YXU - BOS
1 stop3h 40mAir Canada
Sun 20/75:50 a.m.BOS - YXU
2 stops9h 12mAir Canada
Deal found 11/6C$ 591
Sat 26/76:15 a.m.YXU - BOS
1 stop3h 40mUnited Airlines
Sat 2/810:40 a.m.BOS - YXU
1 stop4h 17mUnited Airlines
Deal found 10/6C$ 688
Sat 19/76:00 a.m.YXU - BOS
3 stops29h 31mMultiple Airlines
Thu 24/79:32 a.m.BOS - YXU
3 stops35h 28mMultiple Airlines
Deal found 10/6C$ 815

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 12 June 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 25/6

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

1 stop3h 40m

Boston Logan Intl

Sun 20/7

5:50 a.m.-3:02 p.m.

2 stops9h 12m

C$ 591

LondonBoston

YXU - BOS

YXUBOS

London

Sat 26/7

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

1 stop3h 40m

Boston Logan Intl

Sat 2/8

10:40 a.m.-2:57 p.m.

1 stop4h 17m

C$ 688

LondonBoston

YXU - BOS

YXUBOS

London

Sat 19/7

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

3 stops29h 31m

Boston Logan Intl

Thu 24/7

9:32 a.m.-9:00 p.m.

3 stops35h 28m

C$ 815

LondonBoston

YXU - BOS

YXUBOS

London

Thu 24/7

6:15 a.m.-11:28 a.m.

1 stop5h 13m

C$ 334

LondonBoston

YXU - BOS

YXUBOS

London

Fri 25/7

6:00 a.m.-9:46 a.m.

3 stops27h 46m

C$ 402

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

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.

Rainfall in Boston by month

Plan your trip to Boston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 mm per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

Temperature in Boston by month

Plan your trip to Boston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 12 June 2025.
Read reviews from past customers who have flown United Airlines and Air Canada from London to Boston. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,790 reviews
Check prices

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews
Check prices

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Air Canada
7.1
Good
9,531 reviews
United Airlines
7.4
Good
8,790 reviews
Check prices

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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 are the cheapest airlines flying from London, Ontario to Boston round-trip?

    Air Canada, at C$ 591, was found to be the cheapest airline from London, Ontario to Boston. An alternate airline flying to your destination would be United Airlines. Air Canada is priced at 19% 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 London?

Book flights to London if you plan to visit one of these locations
Seekonk
Waltham
Medford
Braintree
Somerville
Dedham
Rockland
Chelsea
Warwick
Milford
Plymouth
Quincy
Old Orchard Beach
Revere
Hampton
Lynn
Merrimack
Andover
Watertown
Kennebunk

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 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 478AverageC$ 682FlexibilityNo 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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