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Cheap flights from Boston to London Heathrow Airport from C$ 307

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 24/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to London Heathrow are usually found in October or August, booked 69 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Boston to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Boston to Heathrow
Explore the most affordable flight options available from Boston to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2026.

Fri 30/17:12 p.m.
BOS
-
LHR
Nonstop6h 43m
JetBlue
Tue 3/29:20 a.m.
LHR
-
BOS
Nonstop7h 56m
JetBlue
Deal found 20/1C$ 677
Thu 24/97:35 p.m.
BOS
-
LHR
Nonstop6h 35m
British Airways
Fri 9/109:50 a.m.
LHR
-
BOS
1 stop10h 50m
British Airways
Deal found 20/1C$ 679
Wed 21/106:35 p.m.
BOS
-
LHR
Nonstop6h 55m
JetBlue
Wed 4/119:20 a.m.
LHR
-
BOS
Nonstop7h 52m
JetBlue
Deal found 21/1C$ 680
Tue 10/38:10 p.m.
BOS
-
LHR
Nonstop6h 50m
British Airways
Fri 27/31:30 p.m.
LHR
-
BOS
Nonstop7h 40m
British Airways
Deal found 21/1C$ 682
Wed 4/25:30 a.m.
BOS
-
LHR
1 stop20h 40m
United Airlines
Mon 23/34:40 p.m.
LHR
-
BOS
1 stop30h 55m
United Airlines
Deal found 20/1C$ 683
Fri 13/26:00 a.m.
BOS
-
LHR
1 stop10h 20m
United Airlines
Wed 18/21:45 p.m.
LHR
-
BOS
1 stop11h 35m
United Airlines
Deal found 20/1C$ 684
Mon 30/36:40 p.m.
BOS
-
LHR
1 stop10h 20m
United Airlines
Thu 16/41:50 p.m.
LHR
-
BOS
1 stop11h 05m
United Airlines
Deal found 19/1C$ 686
Mon 2/27:35 p.m.
BOS
-
LHR
1 stop9h 05m
Finnair
Tue 10/21:30 p.m.
LHR
-
BOS
Nonstop7h 45m
Finnair
Deal found 21/1C$ 687
Wed 11/26:00 a.m.
BOS
-
LHR
1 stop19h 20m
British Airways
Wed 25/25:05 p.m.
LHR
-
BOS
Nonstop7h 40m
British Airways
Deal found 21/1C$ 689
Fri 6/212:08 p.m.
BOS
-
LHR
2 stops14h 02m
United Airlines
Thu 12/29:00 a.m.
LHR
-
BOS
1 stop16h 20m
United Airlines
Deal found 20/1C$ 690
Mon 6/46:40 p.m.
BOS
-
LHR
1 stop10h 20m
United Airlines
Thu 23/410:50 a.m.
LHR
-
BOS
1 stop11h 50m
United Airlines
Deal found 19/1C$ 691
Sat 14/26:00 a.m.
BOS
-
LHR
1 stop10h 20m
United Airlines
Thu 19/211:10 a.m.
LHR
-
BOS
1 stop12h 25m
United Airlines
Deal found 21/1C$ 693

Find flight deals from Boston to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Heathrow (LHR). 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 21 January 2026.

Round-trip from

C$ 677

One-way from

C$ 307

Popular in

June

Cheapest in

October

Average price

C$ 796

Good round-trip deal

C$ 759 or less

Good one-way deal

C$ 679 or less
JetBlue
  • JetBlue
  • 31/1-12/2
  • Nonstop
  • 14h 43m total
  • Boston to London
Search Deals
British Airways
  • British Airways
  • 24/3
  • Nonstop
  • 6h 50m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 207 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to London Heathrow.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Heathrow 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 21 January 2026.
Use the filters below to find and compare flights from Boston to London Heathrow Airport that are best for you.

Fly from

Boston

Fly to

Heathrow

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 19/2

12:05 p.m.-7:10 a.m.

2 stops14h 05m

London Heathrow

Thu 26/2

1:45 p.m.-8:00 p.m.

1 stop11h 15m

C$ 690

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 28/2

6:00 a.m.-8:35 p.m.

1 stop9h 35m

London Heathrow

Thu 5/3

9:00 a.m.-5:19 p.m.

2 stops37h 19m

C$ 690

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 22/3

5:30 a.m.-7:10 a.m.

1 stop21h 40m

London Heathrow

Sat 28/3

4:40 p.m.-5:40 p.m.

1 stop29h 00m

C$ 704

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/2

9:30 a.m.-10:50 a.m.

1 stop20h 20m

London Heathrow

Mon 16/2

9:00 a.m.-5:50 p.m.

1 stop13h 50m

C$ 704

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 1/2

7:28 p.m.-11:05 a.m.

1 stop10h 37m

London Heathrow

Thu 5/2

1:45 p.m.-8:00 p.m.

1 stop11h 15m

C$ 705

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 15/4

5:30 a.m.-6:30 a.m.

1 stop20h 00m

London Heathrow

Fri 24/4

12:40 p.m.-5:45 p.m.

1 stop10h 05m

C$ 708

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 12/5

6:50 p.m.-10:00 a.m.

1 stop10h 10m

London Heathrow

Wed 20/5

6:50 a.m.-4:24 p.m.

2 stops14h 34m

C$ 709

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/2

12:08 p.m.-7:10 a.m.

2 stops14h 02m

London Heathrow

Thu 5/2

12:05 p.m.-8:00 p.m.

1 stop12h 55m

C$ 711

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 20/3

8:10 p.m.-6:50 a.m.

Nonstop6h 40m

London Heathrow

Sun 29/3

6:55 p.m.-9:20 p.m.

Nonstop7h 25m

C$ 723

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 18/3

9:00 p.m.-7:50 a.m.

Nonstop6h 50m

London Heathrow

Fri 20/3

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

Nonstop7h 55m

C$ 723

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/1

Showing 1-10 of 22 results
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Best time to book a flight from Boston to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Boston 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 Boston to London Heathrow Airport

How far ahead should I book a flight from Boston to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Heathrow. Price data was last updated on 16 January 2026.

To ensure you get the cheapest price possible for a flight from Boston to London Heathrow Airport, you should look to book at least 69 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boston to London Heathrow Airport?

Currently, October is the cheapest month in which you can book a flight from Boston to London Heathrow Airport (average of C$ 601). Flying from Boston to London Heathrow Airport in June is currently the most expensive (average of C$ 821). 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.

What is the cheapest time of day to fly from BOS to LHR?

Find hourly flight availability from Boston to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 January 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to London Heathrow Airport as you normally would.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 21 January 2026.
Read reviews from past customers who have flown British Airways from Boston to London Heathrow Airport. 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.
British Airways
6.7
Okay
7,689 reviews
Check prices

Entertainment

6.4

Food

6.4

Crew

7.6

Comfort

6.8

Overall

6.7

Boarding

6.9

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,689 reviews
British Airways
6.7
Okay
7,689 reviews
Check prices

Entertainment

6.4

Food

6.4

Crew

7.6

Comfort

6.8

Overall

6.7

Boarding

6.9

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

Find useful and relevant information for your journey from Boston to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to London Heathrow?

    For a flight from Boston to London Heathrow, you will be flying from Logan Intl. Boston Logan Intl (BOS) is just 4.2 km from the centre of the city. Logan Intl is the only Boston airport and it handles 27 outbound flights to London Heathrow per day. 1 airline has flights to London Heathrow from Boston Logan Intl on a regular basis.

  • How long is the flight from Boston to London Heathrow Airport?

    United Airlines can get you from Boston to London Heathrow Airport in just under 14h 05m. Your travel time can differ by up to . Airlines will cover a distance of 5237 km.

  • What is the cheapest airline to fly from Boston to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Boston to London Heathrow Airport round-trip from C$ 606. This flight start at 30% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Boston to London Heathrow Airport?

    No one likes to see their flight delayed. When booking a flight from Boston to London Heathrow Airport consider choosing Malaysia Airlines (94%), Gulf Air (88%) or American Airlines (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boston to London Heathrow Airport?

    Looking at all options, your cheapest flight can be booked for C$ 599. While the most popular route (Boston Logan Intl - London Heathrow) can be booked for C$ 993 on average, our data indicates C$ 824 when flying from Boston to London Heathrow Airport.

  • Can I find deals for flights from Boston to Heathrow that include hotel bookings?

    Yes. In addition to deals on Boston to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Heathrow.

  • Can I find deals for business class flights from Boston to Heathrow?

    Yes. Cheapflights offers flight deals from Boston to Heathrow 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 Boston to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from Boston to London Heathrow Airport (average of C$ 601). Flying from Boston to London Heathrow Airport in June is currently the most expensive (average of C$ 821). 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 Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Sutton
Twickenham
Gatwick
Slough
Marlow
Cobham
Milton Keynes
Leamington Spa
Romford
Watford
Bedford
Luton
Stratford-upon-Avon
Hounslow

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Boston to Heathrow

Discover the top airline that operate flights from Boston to Heathrow. 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 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 606AverageC$ 750FlexibilityNo cancel feeOn-time70%
Search British Airways 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 Boston to Heathrow?

Cheapflights helps you search for flights from Boston to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Boston to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Boston to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Boston to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Boston shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Boston to Heathrow become cheaper?

Of course! You can now track prices for flights from Boston to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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