Cheap flights from London to Boston from €356

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Boston departing on 11/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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TAP AIR PORTUGAL Logo
10:40 - 21:10LGW-BOS
14h 30m1 stop
TAP AIR PORTUGAL Logo
19:05 - 09:50BOS-LGW
10h 45m1 stop
€397TAP AIR PORTUGAL
Find Deal
Thu, 19 Mar - Mon, 23 Mar
TAP AIR PORTUGAL Logo
19:55 - 14:35LHR-BOS
23h 40m1 stop
TAP AIR PORTUGAL Logo
18:05 - 11:25BOS-LHR
12h 20m1 stop
€400TAP AIR PORTUGAL
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Sat, 6 Dec - Sat, 31 Jan
TAP AIR PORTUGAL Logo
06:00 - 20:10LHR-BOS
19h 10m1 stop
TAP AIR PORTUGAL Logo
18:05 - 12:40BOS-LHR
13h 35m1 stop
€401TAP AIR PORTUGAL
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Sat, 6 Dec - Sat, 31 Jan
Icelandair Logo
20:35 - 17:50LHR-BOS
26h 15m1 stop
Icelandair Logo
19:50 - 10:50BOS-LHR
10h 00m1 stop
€420Icelandair
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Mon, 8 Dec - Mon, 15 Dec
Icelandair Logo
20:35 - 17:50LHR-BOS
26h 15m1 stop
Icelandair Logo
19:50 - 10:50BOS-LHR
10h 00m1 stop
€422Icelandair
Find Deal
Mon, 8 Dec - Mon, 15 Dec
Icelandair Logo
11:55 - 17:50LGW-BOS
10h 55m1 stop
Icelandair Logo
19:50 - 10:55BOS-LGW
10h 05m1 stop
€442Icelandair
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Wed, 26 Nov - Wed, 3 Dec
Scandinavian Airlines Logo
21:05 - 15:50LHR-BOS
23h 45m2 stops
Scandinavian Airlines Logo
17:35 - 16:25BOS-LHR
17h 50m2 stops
€455Scandinavian Airlines
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Thu, 29 Jan - Tue, 3 Feb
United Airlines Logo
13:45 - 20:20LHR-BOS
11h 35m1 stop
United Airlines Logo
10:30 - 06:40BOS-LHR
15h 10m2 stops
€464United Airlines
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Tue, 9 Dec - Mon, 15 Dec
Multiple Airlines Logo
08:30 - 18:55STN-BOS
15h 25m1 stop
Multiple Airlines Logo
21:20 - 14:20BOS-STN
12h 00m1 stop
€480Multiple Airlines
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Mon, 8 Dec - Mon, 15 Dec
Multiple Airlines Logo
09:40 - 18:55LGW-BOS
14h 15m1 stop
Multiple Airlines Logo
21:20 - 12:15BOS-LGW
9h 55m1 stop
€486Multiple Airlines
Find Deal
Mon, 8 Dec - Mon, 15 Dec

Icelandair flights from London to Boston

Our best Icelandair deals on London to Boston flight tickets
Icelandair
8 Dec
LHR20:35London Heathrow
26h 15m
1 stop
BOS17:50Boston Logan Intl
15 Dec
BOS19:50Boston Logan Intl
10h 00m
1 stop
LHR10:50London Heathrow
Icelandair
26 Nov
LGW11:55London Gatwick
10h 55m
1 stop
BOS17:50Boston Logan Intl
29 Nov
BOS19:50Boston Logan Intl
10h 05m
1 stop
LGW10:55London Gatwick
Icelandair
22 Nov
LGW11:55London Gatwick
10h 55m
1 stop
BOS17:50Boston Logan Intl
27 Nov
BOS11:35Boston Logan Intl
18h 20m
1 stop
LGW10:55London Gatwick

Turkish Airlines flights from London to Boston

Our best Turkish Airlines deals on London to Boston flight tickets
Turkish Airlines
30 Apr
STN17:45London Stansted
31h 10m
1 stop
BOS19:55Boston Logan Intl
9 May
BOS21:50Boston Logan Intl
31h 25m
1 stop
STN10:15London Stansted
Turkish Airlines
24 Nov
LGW06:20London Gatwick
16h 45m
1 stop
BOS18:05Boston Logan Intl
29 Nov
BOS20:00Boston Logan Intl
32h 25m
1 stop
LGW09:25London Gatwick

momondo Fare Finder

 
Customise 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, momondo users made 13,528 searches. Data last updated 14 November 2025.
Use the filters below to find and compare flights from London to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Thu 19/3

10:40-21:10

1 stop14h 30m

Boston Logan Intl

Mon 23/3

19:05-09:50

1 stop10h 45m

€397

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 6/12

19:55-14:35

1 stop23h 40m

Boston Logan Intl

Sat 31/1

18:05-11:25

1 stop12h 20m

€400

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 6/12

06:00-20:10

1 stop19h 10m

Boston Logan Intl

Sat 31/1

18:05-12:40

1 stop13h 35m

€401

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 8/12

20:35-17:50

1 stop26h 15m

Boston Logan Intl

Mon 15/12

19:50-10:50

1 stop10h 00m

€420

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 8/12

20:35-17:50

1 stop26h 15m

Boston Logan Intl

Mon 15/12

19:50-10:50

1 stop10h 00m

€422

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 26/11

11:55-17:50

1 stop10h 55m

Boston Logan Intl

Wed 3/12

19:50-10:55

1 stop10h 05m

€442

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 29/1

21:05-15:50

2 stops23h 45m

Boston Logan Intl

Tue 3/2

17:35-16:25

2 stops17h 50m

€455

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 9/12

13:45-20:20

1 stop11h 35m

Boston Logan Intl

Mon 15/12

10:30-06:40

2 stops15h 10m

€464

LondonBoston

STN - BOS

STNBOS

London Stansted

Mon 8/12

08:30-18:55

1 stop15h 25m

Boston Logan Intl

Mon 15/12

21:20-14:20

1 stop12h 00m

€480

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Mon 8/12

09:40-18:55

1 stop14h 15m

Boston Logan Intl

Mon 15/12

21:20-12:15

1 stop9h 55m

€486

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from London to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and Boston?

What is the cheapest month to fly to Boston?

The month of September is, on average, the cheapest month to fly to Boston from London, with most prices found around €453. The month of February is another great option to travel to Boston, with average flight prices from London averaging around €460.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from London to Boston is on a Tuesday when prices can be found for as low as €660. Flights from London to Boston on a Monday will generally be more expensive and average around €1,065. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Boston?

Flying to Boston from London in the morning is the least expensive time of day to depart. momondo users have found prices as low as €596 when looking at flights departing in the morning. Flights in the evening are often more expensive, with an average ticket price of €1,065.

What is the cheapest London to Boston Logan Intl flight route?

Fly from London Gatwick to Boston Logan Intl for the best London - Boston Logan Intl flight prices

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around €534 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London for as low as €499 on momondo.

What cabin class options are available on London to Boston Logan Intl flights?

There are 2 cabin classes available to choose from on London to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Boston flights?

You could potentially save up to 30% on your flight if you consider stops on a London to Boston flight.

How have London to Boston flight prices changed over time?

As of November 2025, prices for London to Boston flights are approximately 61% more expensive when compared to flights at the same time last year.

When to book flights from London to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from London to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Boston (LON to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Boston

Fastest flight time

7h 25m

Direct flights

Every day

Airports in Boston

1 airport
The fastest flight from London to Boston takes 7h 25m
Direct flights go from London to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)
  • How far is London to Boston Logan Intl by plane?

    London and Boston Logan Intl are 5260.9 km apart from one another. In terms of flight time, this usually takes a little over 7h 30m.

  • When did momondo last update prices for flights from London to Boston Logan Intl Airport?

    Prices for flights from London to Boston Logan Intl Airport were last updated today.

  • How old do you have to be to fly from London to Boston Logan Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The necessary travel and health documents for your Boston Logan Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Boston?

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Everett
Brookline
Quincy
Cambridge
Medford
Warwick
Woburn

Why use momondo?

Why should I use momondo to find a flight deal from London to Boston?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Boston for you.

Can I find flights from London to Boston with flexible booking policies on momondo?

momondo does allow users to show only those flights to Boston from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Boston?

Once all potential London to Boston flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Boston right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Boston flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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