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Cheap flights from London to Boston from €238

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 17/9. 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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0 bags
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Find the cheapest flights from London to Boston

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from London to Boston.
11:40 - 17:50STN-BOS
11h 10m1 stop
19:15 - 10:40BOS-STN
10h 25m1 stop
€364PLAY
Find Deal
Wed, 23 Apr - Tue, 29 Apr
11:40 - 17:50STN-BOS
11h 10m1 stop
19:15 - 10:40BOS-STN
10h 25m1 stop
€369PLAY
Find Deal
Sat, 13 Sep - Mon, 29 Sep
06:15 - 17:50LTN-BOS
16h 35m1 stop
19:15 - 13:00BOS-LTN
12h 45m1 stop
€389
Find Deal
Wed, 7 May - Tue, 13 May
15:40 - 22:00LGW-BOS
11h 20m1 stop
12:35 - 11:45BOS-LGW
18h 10m1 stop
€422Icelandair
Find Deal
Tue, 29 Apr - Sat, 10 May
15:40 - 22:00LGW-BOS
11h 20m1 stop
23:35 - 11:45BOS-LGW
31h 10m1 stop
€424Icelandair
Find Deal
Tue, 29 Apr - Sun, 11 May
10:50 - 17:40LHR-BOS
11h 50m1 stop
19:14 - 10:40BOS-LHR
10h 26m1 stop
€448Lufthansa
Find Deal
Tue, 6 May - Tue, 13 May
13:45 - 19:55LHR-BOS
11h 10m1 stop
19:32 - 10:40BOS-LHR
10h 08m1 stop
€451
Find Deal
Wed, 23 Apr - Wed, 30 Apr
06:40 - 15:35LHR-BOS
13h 55m1 stop
17:40 - 16:25BOS-LHR
17h 45m2 stops
€452Scandinavian Airlines
Find Deal
Tue, 19 Aug - Tue, 26 Aug
07:05 - 15:35LHR-BOS
13h 30m2 stops
17:40 - 14:35BOS-LHR
15h 55m2 stops
€454Scandinavian Airlines
Find Deal
Tue, 19 Aug - Tue, 26 Aug
06:55 - 17:40LHR-BOS
15h 45m1 stop
19:14 - 10:40BOS-LHR
10h 26m1 stop
€474Lufthansa
Find Deal
Wed, 30 Apr - Mon, 12 May

PLAY flights from London to Boston

Our best PLAY deals on London to Boston flight tickets
PLAY
23 Apr
STN11:40London Stansted
11h 10m
1 stop
BOS17:50Boston Logan Intl
29 Apr
BOS19:15Boston Logan Intl
10h 25m
1 stop
STN10:40London Stansted
PLAY
13 Sept
STN11:40London Stansted
11h 10m
1 stop
BOS17:50Boston Logan Intl
29 Sept
BOS19:15Boston Logan Intl
10h 25m
1 stop
STN10:40London Stansted
PLAY
8 Sept
STN11:40London Stansted
11h 10m
1 stop
BOS17:50Boston Logan Intl
26 Sept
BOS19:15Boston Logan Intl
10h 25m
1 stop
STN10:40London Stansted

Icelandair flights from London to Boston

Our best Icelandair deals on London to Boston flight tickets
Icelandair
29 Apr
LGW15:40London Gatwick
11h 20m
1 stop
BOS22:00Boston Logan Intl
10 May
BOS12:35Boston Logan Intl
18h 10m
1 stop
LGW11:45London Gatwick
Icelandair
29 Apr
LGW15:40London Gatwick
11h 20m
1 stop
BOS22:00Boston Logan Intl
11 May
BOS23:35Boston Logan Intl
31h 10m
1 stop
LGW11:45London Gatwick
Icelandair
8 Sept
LGW15:40London Gatwick
11h 20m
1 stop
BOS22:00Boston Logan Intl
14 Sept
BOS23:35Boston Logan Intl
10h 05m
1 stop
LGW14:40London Gatwick

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 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 €491. The month of February is another great option to travel to Boston, with average flight prices from London averaging around €493.

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

The cheapest day to depart from London to Boston is on a Monday when prices can be found for as low as €0. Flights from London to Boston on a Tuesday will generally be more expensive and average around €710. 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 at midday is the least expensive time of day to depart. momondo users have found prices as low as €0 when looking at flights departing at midday. Flights in the morning are often more expensive, with an average ticket price of €627.

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

Fly from London Heathrow 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 24 weeks ahead of your departure date. In general, you can expect to find flights to Boston for around €592 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London for as low as €555 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.

How have London to Boston flight prices changed over time?

As of March 2025, prices for London to Boston flights are approximately 12% 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

Best price found

€238

Fastest flight time

7h 15m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from London in the past 72 hours is €238. The best return flight deal from London to Boston found on momondo in the last 72 hours is €364.
The fastest flight from London to Boston takes 7h 15m
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 15m.

  • 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
Quincy
Brookline

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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