BOS - LHR

£259 Find Cheap Flights from Boston to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Heathrow departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to London.
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Everything you should know

Cheapest return fare
£571
Typical prices: £545-£386
Air Canada
Sun 2/8Tue 11/8
BOS - LHR • 1 stop
Cheapest direct flights
£579
Typical prices: £573-£387
British Airways
Sat 7/11Tue 24/11
BOS - LHR • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
For comfort, Virgin Atlantic Economy Delight adds legroom and priority boarding.
BA premium economy adds 18 cm legroom; Iberia and KLM also offer premium economy.
Expert advice
Expert advice
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Expert advice
Expert advice
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Top airlines
Cheapest • from £572 (return)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
You can fly direct with American Airlines, British Airways, and others. Average duration is 6h 41m
Direct flights
Direct flights
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Direct flights
Direct flights
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Avoid delays
Most punctual • 92% on-time
Best time • Fewest delays
Insights
Insights
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Insights
Top stopover airports
Cheapest • Avg £369 (return)
Shortest trip • 9h 35m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
Good to know
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Good to know
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Boston to Heathrow (BOS-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Boston to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boston to Heathrow

Sun, 2 Aug - Tue, 11 Aug
Multiple Airlines Logo
18:25 - 21:00
BOS
-
LHR
21h 35m
1 stop
Multiple Airlines Logo
07:40 - 19:15
LHR
-
BOS
16h 35m
2 stops
£571Multiple Airlines
Thu, 8 Oct - Sun, 11 Oct
SWISS Logo
21:40 - 17:50
BOS
-
LHR
15h 10m
1 stop
SWISS Logo
08:45 - 19:55
LHR
-
BOS
16h 10m
1 stop
£572SWISS
Wed, 7 Oct - Wed, 21 Oct
Multiple Airlines Logo
23:00 - 20:20
BOS
-
LHR
16h 20m
1 stop
Multiple Airlines Logo
17:35 - 20:05
LHR
-
BOS
7h 30mdirect
£573Multiple Airlines
Sun, 2 Aug - Thu, 6 Aug
Multiple Airlines Logo
18:25 - 21:00
BOS
-
LHR
21h 35m
1 stop
Multiple Airlines Logo
09:50 - 14:55
LHR
-
BOS
10h 05m
1 stop
£573Multiple Airlines
Sun, 6 Sep - Sun, 13 Sep
Scandinavian Airlines Logo
17:40 - 17:40
BOS
-
LHR
19h 00m
1 stop
Scandinavian Airlines Logo
21:05 - 15:35
LHR
-
BOS
23h 30m
2 stops
£574Scandinavian Airlines
Mon, 27 Jul - Thu, 30 Jul
Multiple Airlines Logo
23:00 - 20:20
BOS
-
LHR
16h 20m
1 stop
Multiple Airlines Logo
10:05 - 12:35
LHR
-
BOS
7h 30mdirect
£575Multiple Airlines
Sun, 11 Oct - Mon, 19 Oct
Aer Lingus Logo
18:30 - 09:05
BOS
-
LHR
9h 35m
1 stop
Aer Lingus Logo
09:50 - 15:40
LHR
-
BOS
10h 50m
1 stop
£576Aer Lingus
Fri, 11 Sep - Sun, 20 Sep
Multiple Airlines Logo
07:25 - 18:55
BOS
-
LHR
6h 30mdirect
Multiple Airlines Logo
21:25 - 18:50
LHR
-
BOS
26h 25m
1 stop
£576Multiple Airlines
Thu, 20 Aug - Wed, 26 Aug
Multiple Airlines Logo
10:40 - 06:30
BOS
-
LHR
14h 50m
2 stops
Multiple Airlines Logo
13:25 - 18:50
LHR
-
BOS
10h 25m
1 stop
£577Multiple Airlines
Thu, 24 Sep - Sun, 27 Sep
Scandinavian Airlines Logo
17:40 - 14:35
BOS
-
LHR
15h 55m
2 stops
Scandinavian Airlines Logo
06:40 - 15:35
LHR
-
BOS
13h 55m
2 stops
£578Scandinavian Airlines
Booking Insights

KAYAK’s insights & trends for Boston to Heathrow flights

Get data-powered insights and trends into flights from Boston to Heathrow to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Boston to London Heathrow Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Boston to London Heathrow Airport departing in August.

What’s the cheapest day of the week to fly from Boston to London Heathrow Airport?

The average price of all round-trip flights from Boston to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to London Heathrow Airport, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from London Heathrow Airport, Wednesday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Boston to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to London Heathrow Airport is January, where tickets cost £394 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £681 and £564 respectively.

Can I save money by flying with a stopover from Boston to London Heathrow Airport?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £513 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to London Heathrow Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Expert advice

Expert advice for your flight from Boston to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Laura Ratliff

Laura Ratliff

Expert on Virgin Atlantic

Laura Ratliff is a New York-based writer and editor. She lives in downtown Brooklyn with her husband and their beloved dogs. Originally from Texas, she now considers New York City her home. She typically spends more than 200,000 miles on a plane each year and stays in plenty of hotels.

Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Blane Bachelor

Blane Bachelor

Expert on KLM, Air France and BOS

Blane Bachelor is a journalist and editor specialising in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favourite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history.

Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Kirstie Pickering

Kirstie Pickering

Expert on LHR

Aviation and business journalist Kirstie didn’t leave England until she was 18 years old, but has since travelled to over 20 countries including Japan, Canada, and Iceland. Her travel expertise lies in European city breaks, including how to find the best locally-owned hotels and restaurants and how to optimise the airport experience for your needs.

Good to know - Cheap tickets from Boston to London Heathrow Airport

Low seasonJanuary
Cheapest flight£259
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (20% more expensive on average)
Flight from Boston to London Heathrow Airport

When to book flights from Boston to Heathrow

Are your dates flexible? Find out the best times to travel from Boston to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Boston to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Boston to Heathrow 
alyciaFlew with American Airlines
BOS
-
LHR
Mar 2026
Long walk between terminals in boston Don't cut connections close
MarilynFlew with British Airways
BOS
-
LHR
Feb 2026
Meeting a friend at Heathrow was difficult as there are many terminals so far apart. Access to the train was great and an easy way to get to the downtown area.
Verified travelerFlew with British Airways
BOS
-
LHR
Jan 2024
Leave plenty of time if connecting in London as most connecting flights are in a different terminal which requires a bus or tram ride. Also if you’re not at the gate 30 minutes ahead they will not let you on the plane. Apparently this is a Heathrow not airline rule.

FAQs for booking Boston to London Heathrow Airport flights

  • What is the cheapest flight from Boston to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Boston to London Heathrow Airport was £259 for a one-way ticket and £571 for a return.

  • Which airports will I be using when flying from Boston to London Heathrow Airport?

    Boston and London Heathrow Airport are both served by 1 main airport. You will leave Boston from Boston Logan Intl and will be arriving at London Heathrow.

  • Which airlines offer Wi-Fi service onboard planes from Boston to London Heathrow Airport?

    JetBlue, Air France, Delta, KLM, and American Airlines offer inflight Wi-Fi service on the Boston to London Heathrow Airport flight route.

  • Which aircraft models fly most regularly from Boston to London Heathrow Airport?

    The Boeing 777 is the aircraft model that flies most regularly on the Boston to London Heathrow Airport flight route.

  • Which airline alliances offer flights from Boston to London Heathrow Airport?

    SkyTeam, and oneworld are the airline alliances operating flights between Boston and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Boston to London Heathrow Airport?

    There are direct flights from Boston to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from Boston to London, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Boston to London are Delta and KLM. With an average price for the route of £530 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of £570 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Boston to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Boston is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to London Heathrow Airport

  • Looking for a cheap flight from London Heathrow Airport to Boston? 25% of our users found flights on this route for £403 or less one-way and £599 or less round-trip.

Prefer to fly direct from Boston to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Boston Logan Intl to London Heathrow.
Find which airlines fly direct from Boston Logan Intl Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to London Heathrow

Monday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Tuesday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Wednesday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Thursday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Friday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Saturday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Sunday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

See more direct flights

Direct returns

London Heathrow to Boston Logan Intl

Monday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Tuesday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Wednesday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Thursday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Friday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Saturday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

Sunday

American Airlines,British Airways,Delta, +2 more

American Airlines,British Airways, +3 more

See more direct flights

Reviews of the top 5 airlines flying from Boston to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Boston to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8394 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.8Comfort
7.2Food
Airline reviews

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

10.0 ExcellentJulian, Jun 2026
LAX - AUS
Read more Delta reviews

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

The flight was delayed. The aircraft was unclean. Promised seat was not given due to change in Aircraft. Not one crew on ground was in a position to give any response. Amsterdam Airport is AVIODABLE Over crowded. Over Expensive. Poor Services.

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

Flight was on time, staff are friendly and helpful onboard.

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Couldn’t get boarding passes online, delayed an hour, and smallest amount of space on board I’ve ever encountered for such a long flight.

Horrible seat at the back. Crew was very kind. Packed plane. Wordy pilot bragging about Iberia being punctual when many of us came from Alicante flight that was delayed an hour and many lost connection and we lost our luggage. Still waiting for it

In general, I've had excellent experiences with Iberia flights and will continue to use them. In this last flight there were two things that didn't go right. I didn't get the kosher meal I had pre-requested when I had checked in on-line. Things worked out OK as we ended up eating the fish and vegetarian choices, which were really good. The other issue was that some movies for me and my wife started fine but after 8-12 minutes the content just switched to something else. The flight attendant reset our entertainment systems, but the problem persisted. We ended up choosing other movies/TV shows that did work fine.

Flight was fine - however my husband's checked in case was damaged, and mine still has not arrived

Awful. They didn't even show concern that her connecting flight( Dallas to Mardrid) was gone/missing. I don't understand how that is even possible. Rudest answer from one of the crew was that American Airlines sold the tickets to somebody else. My daughter was not in the list.

The flight was canceled on a Thursday last minute. I lost thousands of dollars in hotels and car rental

Excellent lie flat seat for premium economy! Great staff. Bad food . Not so great entertainment. My bag didn’t make it either.

Really like the idea experience on this airline I will use again

The boarding procedure got confusing because they wanted to weigh everyone’s carry-on. Apparently mine was 3 1/2 kg over their limit. I didn’t know they had a limit. And at the check-in desk, nothing was said about this. They wanted me to check the carry-on at no charge and that would have been fine except then they told me at my connection in London I would have to go outside to baggage claim retrieve my bag, and then recheck it. In other words, they could not check it to my final destination, only to London. I told him this was unacceptable so after a few minutes of discussion, they came back and said that my bag would be OK to carry on the plane. It seems that if you have a connection then the weight is not as important. Then when I actually went to board the boarding agent said I needed a tag indicating that my bag had been weighed, even though she had just five minutes ago talked to the same person who cleared me. Lots of confusion seems like a very bad process. They need to improve this.

My flight being automatically moved messed up my travel plans, and I had to quickly find an alternative mode of transportation. I couldn’t get a refund from any of the companies involved. Kayak, Ibiza, or Vueling. I am still unsure of how to settle my concern.

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Flight was good but temp in the cabin was cold.

I like American Airlines and their safety record. They provide quality service and a feel safe enough to prefer American Airlines over other carriers even if I have to pay a little more.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

Everything you need to know for your flight from Boston to Heathrow

Information on your arrival and departure airports