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Cheap flights from Boston to London Heathrow Airport from C$ 488

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
11 Jul — 18 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to London Heathrow are usually found in January or October, booked 54 days in advance, depart on a Tuesday or Saturday 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 11 June 2026.

Mon 7/127:50 p.m.
BOS
-
LHR
1 stop10h 00m
Icelandair
Wed 30/1212:15 p.m.
LHR
-
BOS
1 stop10h 35m
Icelandair
Deal found 6/6C$ 1,070
Thu 17/95:40 p.m.
BOS
-
LHR
2 stops15h 55m
Scandinavian Airlines
Thu 24/96:40 a.m.
LHR
-
BOS
1 stop13h 55m
Scandinavian Airlines
Deal found 8/6C$ 1,073
Tue 11/88:50 p.m.
BOS
-
LHR
1 stop10h 05m
Icelandair
Wed 26/89:25 p.m.
LHR
-
BOS
1 stop29h 20m
Icelandair
Deal found 8/6C$ 1,075
Mon 14/95:40 p.m.
BOS
-
LHR
2 stops15h 55m
Scandinavian Airlines
Sun 27/97:50 p.m.
LHR
-
BOS
2 stops24h 45m
Scandinavian Airlines
Deal found 11/6C$ 1,076
Sun 6/95:40 p.m.
BOS
-
LHR
1 stop19h 00m
Scandinavian Airlines
Fri 18/99:05 p.m.
LHR
-
BOS
2 stops23h 30m
Scandinavian Airlines
Deal found 7/6C$ 1,077
Wed 9/95:40 p.m.
BOS
-
LHR
2 stops15h 55m
Scandinavian Airlines
Tue 15/97:05 a.m.
LHR
-
BOS
2 stops13h 30m
Scandinavian Airlines
Deal found 8/6C$ 1,079
Sun 13/95:40 p.m.
BOS
-
LHR
2 stops15h 55m
Scandinavian Airlines
Thu 17/99:05 p.m.
LHR
-
BOS
2 stops23h 30m
Scandinavian Airlines
Deal found 11/6C$ 1,082
Tue 25/85:40 p.m.
BOS
-
LHR
2 stops15h 55m
Scandinavian Airlines
Mon 7/99:05 p.m.
LHR
-
BOS
2 stops23h 30m
Scandinavian Airlines
Deal found 7/6C$ 1,083
Sun 27/95:40 p.m.
BOS
-
LHR
1 stop23h 00m
Scandinavian Airlines
Wed 30/97:30 p.m.
LHR
-
BOS
1 stop25h 05m
Scandinavian Airlines
Deal found 10/6C$ 1,084
Sat 3/105:40 p.m.
BOS
-
LHR
2 stops14h 15m
Scandinavian Airlines
Mon 12/109:05 p.m.
LHR
-
BOS
2 stops23h 30m
Scandinavian Airlines
Deal found 10/6C$ 1,086
Wed 9/95:40 p.m.
BOS
-
LHR
1 stop19h 50m
Scandinavian Airlines
Sat 12/96:40 a.m.
LHR
-
BOS
1 stop13h 55m
Scandinavian Airlines
Deal found 7/6C$ 1,087

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 11 June 2026.

Round-trip from

C$ 1,070

One-way from

C$ 488

Popular in

June

Cheapest in

January

Average price

C$ 1,409
Icelandair
  • Icelandair
  • 7/12-30/12
  • 2 total stops
  • 20h 35m total
  • Boston to London
Search Deals
Delta
  • Delta
  • 9/7
  • 2 total stops
  • 13h 05m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (C$ 369 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 11 June 2026.
Use the filters below to find and compare flights from Boston to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 1/9

7:05 p.m.-6:45 a.m.

Nonstop6h 40m

London Heathrow

Mon 14/9

6:15 a.m.-1:39 p.m.

1 stop12h 24m

C$ 1,105

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 10/10

6:00 a.m.-8:10 p.m.

1 stop9h 10m

London Heathrow

Mon 12/10

8:55 a.m.-3:00 p.m.

1 stop11h 05m

C$ 1,111

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 23/9

5:40 p.m.-2:35 p.m.

2 stops15h 55m

London Heathrow

Sun 11/10

7:50 p.m.-3:35 p.m.

2 stops24h 45m

C$ 1,118

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 28/8

7:10 p.m.-6:45 a.m.

Nonstop6h 35m

London Heathrow

Tue 15/9

9:55 a.m.-4:35 p.m.

1 stop11h 40m

C$ 1,147

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 19/8

7:10 p.m.-6:45 a.m.

Nonstop6h 35m

London Heathrow

Sat 22/8

11:45 a.m.-6:30 p.m.

1 stop11h 45m

C$ 1,174

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 22/11

7:10 p.m.-6:50 a.m.

Nonstop6h 40m

London Heathrow

Sat 28/11

9:40 a.m.-12:30 p.m.

Nonstop7h 50m

C$ 1,199

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 28/7

5:40 p.m.-4:25 p.m.

2 stops17h 45m

London Heathrow

Mon 3/8

6:40 a.m.-3:35 p.m.

1 stop13h 55m

C$ 1,208

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 20/7

9:30 p.m.-9:15 a.m.

Nonstop6h 45m

London Heathrow

Fri 24/7

8:40 a.m.-6:30 p.m.

1 stop14h 50m

C$ 1,278
Quickest round-trip

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 20/7

11:10 p.m.-10:40 a.m.

Nonstop6h 30m

London Heathrow

Fri 24/7

9:40 a.m.-12:15 p.m.

Nonstop7h 35m

C$ 1,288

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 26/7

11:10 p.m.-10:40 a.m.

Nonstop6h 30m

London Heathrow

Fri 31/7

9:40 a.m.-12:15 p.m.

Nonstop7h 35m

C$ 1,289

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

To ensure you get the cheapest price possible for a flight from Boston to London Heathrow Airport, you should look to book at least 53 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, January is the cheapest month in which you can book a flight from Boston to London Heathrow Airport (average of C$ 732). Flying from Boston to London Heathrow Airport in June is currently the most expensive (average of C$ 1,409). 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 11 June 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.

How much does it cost to fly round-trip from Boston to London Heathrow Airport?

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 30 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Boston Logan Intl on a regular basis.

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

    Delta, Scandinavian Airlines, and KLM can get you from Boston to London Heathrow Airport in just under 6h 35m. Your travel time can differ by up to 9h 20m. Airlines will cover a distance of 5237 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 Gulf Air (93%), Scandinavian Airlines (87%) or Finnair (86%) as they are the most reliable in getting you off to your destination on time.

  • 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, January is the cheapest month in which you can book a flight from Boston to London Heathrow Airport (average of C$ 732). Flying from Boston to London Heathrow Airport in June is currently the most expensive (average of C$ 1,409). 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
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Hounslow
Slough
Marlow
Cobham
Leamington Spa
Northampton
Watford
Luton
High Wycombe
Stratford-upon-Avon
Moreton-in-Marsh

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

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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.

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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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