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Heathrow

$264+ Cheap flights from Boston (BOS) to Heathrow (LHR)

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to London Heathrow are usually found in January or February, booked 76 days in advance, depart on a Tuesday or Sunday and return on a Thursday

Cheap 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 June 12, 2025.

Round-trip from

$553
(United Airlines)

One-way from

$264
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$844

Good round-trip deal

$569 or less

Good one-way deal

$324 or less
From Boston Logan Intl to London Heathrow
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One-way flight from Boston Logan Intl to London Heathrow
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Highest demand for flights based on searches. 13% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Boston Logan Intl to London Heathrow.
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Price to beat on a one-way flight from Boston Logan Intl to London Heathrow.
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Find flight deals from Boston to Heathrow

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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/206:40 pmBOS - LHR
1 stop10h 20mUnited Airlines
Thu 7/3112:15 pmLHR - BOS
1 stop11h 41mUnited Airlines
Deal found 6/11$553
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/151:25 pmBOS - LHR
1 stop12h 50mDelta
Fri 8/229:55 amLHR - BOS
1 stop13h 30mDelta
Deal found 6/11$554
This Cheapflightsfares deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:15 pmBOS - LHR
Nonstop6h 45mIberia
Tue 12/28:10 amLHR - BOS
1 stop12h 05mIberia
Deal found 6/12$555
This Cheapflightsfares deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/317:40 pmBOS - LHR
Nonstop6h 40mBritish Airways
Fri 8/82:40 pmLHR - BOS
Nonstop7h 35mBritish Airways
Deal found 6/12$556
This SWISS deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/249:40 pmBOS - LHR
1 stop29h 15mSWISS
Wed 8/277:00 amLHR - BOS
2 stops13h 25mSWISS
Deal found 6/11$560
This CheapOair deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/246:40 pmBOS - LHR
1 stop10h 20mMultiple Airlines
Thu 8/76:00 amLHR - BOS
1 stop18h 55mMultiple Airlines
Deal found 6/12$563
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/712:15 pmBOS - LHR
2 stops13h 15mAir Canada
Sun 9/289:30 amLHR - BOS
1 stop13h 25mAir Canada
Deal found 6/11$564
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:40 pmBOS - LHR
2 stops15h 55mScandinavian Airlines
Mon 9/227:50 pmLHR - BOS
2 stops24h 45mScandinavian Airlines
Deal found 6/11$571
This Virgin Atlantic deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/155:05 pmBOS - LHR
1 stop12h 55mVirgin Atlantic
Tue 7/226:15 pmLHR - BOS
Nonstop7h 45mVirgin Atlantic
Deal found 6/11$572
This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/88:05 pmBOS - LHR
1 stop14h 35mLufthansa
Tue 7/159:00 amLHR - BOS
1 stop13h 40mLufthansa
Deal found 6/11$599
This Finnair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/248:10 pmBOS - LHR
Nonstop6h 40mFinnair
Tue 7/18:55 amLHR - BOS
Nonstop7h 20mFinnair
Deal found 6/10$617
This Brussels Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:05 pmBOS - LHR
2 stops19h 50mBrussels Airlines
Sun 9/75:50 pmLHR - BOS
2 stops52h 50mBrussels Airlines
Deal found 6/10$640

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 2,558,603 searches. Data last updated June 12, 2025.
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

Sun 7/20

6:40 pm-10:00 am

1 stop10h 20m

London Heathrow

Thu 7/31

12:15 pm-6:56 pm

1 stop11h 41m

$553

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 8/15

1:25 pm-7:15 am

1 stop12h 50m

London Heathrow

Fri 8/22

9:55 am-6:25 pm

1 stop13h 30m

$554

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 8/5

12:15 pm-6:30 am

2 stops13h 15m

London Heathrow

Thu 8/14

8:30 am-6:00 pm

2 stops14h 30m

$555

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 7/31

7:40 pm-7:20 am

Nonstop6h 40m

London Heathrow

Fri 8/8

2:40 pm-5:15 pm

Nonstop7h 35m

$556

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 8/19

8:10 pm-7:50 am

Nonstop6h 40m

London Heathrow

Sun 9/7

8:55 am-11:15 am

Nonstop7h 20m

$558

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 8/24

9:40 pm-9:30 pm

2 stops18h 50m

London Heathrow

Tue 8/26

1:45 pm-3:25 pm

1 stop30h 40m

$560

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 7/24

6:40 pm-10:00 am

1 stop10h 20m

London Heathrow

Thu 8/7

6:00 am-7:55 pm

1 stop18h 55m

$563

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 9/1

5:40 pm-5:40 pm

1 stop19h 00m

London Heathrow

Mon 9/8

7:05 am-3:35 pm

2 stops13h 30m

$571

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 7/15

5:05 pm-11:00 am

1 stop12h 55m

London Heathrow

Tue 7/22

6:15 pm-9:00 pm

Nonstop7h 45m

$572

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 7/8

8:05 pm-3:40 pm

1 stop14h 35m

London Heathrow

Tue 7/15

9:00 am-5:40 pm

1 stop13h 40m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 28 results
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The best insider tips for Boston to London Heathrow Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to London Heathrow Airport trip
Airports
BOS

Use the FlyLogan App to pre-order food and access premium Wi-Fi, enhancing your departure experience from BOS.

Read more about BOSby Paul Rubio
LHR

Take the Heathrow Express for the fastest route to central London, reaching Paddington Station quickly and conveniently.

Read more about LHRby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more

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 June 9, 2025.

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Boston to London Heathrow Airport (average of $661). Flying from Boston to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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 June 12, 2025.

When flying from Boston to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 9% versus a flight in the evening.

Weekly flight availability from Boston to London Heathrow Airport

Explore weekly flight availability from Boston to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from BOS to LHR are scheduled on a Tuesday (36 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (27 on average).

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Austrian Airlines from Boston to London. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection 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?

    Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Boston to London Heathrow. 19 airlines have flights from Logan Intl to London Heathrow on a regular basis. Booking flights from Boston Logan Intl to London Heathrow should not be difficult; the airport handles an average of 33 outbound flights to London Heathrow per day.

  • What are the cheapest airlines flying from Boston to London Heathrow Airport round-trip?

    According to our current data, United Airlines ($553), Delta ($554), and Iberia ($555) offers the cheapest pricing from Boston to London Heathrow Airport. United Airlines is 16% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Boston to London Heathrow Airport one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $264. Iberia flights start at $267 while deals on Delta start at $268 one-way.

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

    Before booking your flight to London Heathrow Airport from Boston, check out the most reliable airlines to get you to your destination on time: KLM (89%), Delta (89%), Virgin Atlantic( 89%).

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

    The cheapest flight price from Boston to London Heathrow Airport is $263. On average you can expect to pay $3,210. The most popular route, (Boston Logan Intl - London Heathrow), can usually be booked for $338.

  • Where are the most common layover locations when flying from Boston to London Heathrow Airport?

    Boston to London Heathrow Airport flights have a layover in Reykjavik most often.

  • What are some popular things to do or see while on a layover in Reykjavik?

    Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are currently the most popular points of interest in Reykjavik at the moment. Hallgrímskirkja, Harpa and Laugardalslaug Geothermal Pool are located about 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl if you are interested in checking them out. Those looking to explore during their layover in Reykjavik can rent a car from Reykjavik Keflavik Intl for about $66 per day.

  • Where are the least popular layover locations for Boston to London Heathrow Airport flights?

    Boston to London Heathrow Airport flights that have layovers will least frequently stop in Shannon.

  • 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, November is the cheapest month in which you can book a flight from Boston to London Heathrow Airport (average of $661). Flying from Boston to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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

Traveling to a place near Boston?

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Top 10 airlines flying from Boston to Heathrow

Discover the top 10 airlines 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$290Average$587FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$325Average$507FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$328Average$660FlexibilityNo cancel feeOn-time76%
PLAYCheapest$363Average$474FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$384Average$660FlexibilityNo cancel feeOn-time72%
KLMCheapest$387Average$598FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$390Average$604FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$391Average$662FlexibilityNo cancel feeOn-time70%
JetBlueCheapest$395Average$668FlexibilityNo cancel feeOn-time62%
DeltaCheapest$398Average$678FlexibilityNo cancel feeOn-timeN/A

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