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Cheap flights from London to Boston from £172

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 7/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
£293PLAY
Find Deal
Tue, 22 Apr - Tue, 29 Apr
11:40 - 17:50STN-BOS
11h 10m1 stop
19:15 - 10:40BOS-STN
10h 25m1 stop
£295PLAY
Find Deal
Tue, 6 May - Tue, 13 May
15:40 - 11:35LGW-BOS
24h 55m1 stop
20:50 - 14:40BOS-LGW
12h 50m1 stop
£324Icelandair
Find Deal
Tue, 22 Apr - Tue, 29 Apr
15:40 - 22:00LGW-BOS
11h 20m1 stop
23:35 - 14:40BOS-LGW
10h 05m1 stop
£338Icelandair
Find Deal
Tue, 22 Apr - Tue, 29 Apr
09:50 - 14:40LHR-BOS
9h 50m1 stop
20:00 - 07:50BOS-LHR
6h 50mdirect
£396British Airways
Find Deal
Wed, 23 Apr - Tue, 29 Apr
08:50 - 14:40LHR-BOS
10h 50m1 stop
20:00 - 07:50BOS-LHR
6h 50mdirect
£401British Airways
Find Deal
Wed, 23 Apr - Wed, 30 Apr
09:00 - 20:20LHR-BOS
16h 20m1 stop
20:15 - 08:05BOS-LHR
6h 50mdirect
£404Virgin Atlantic
Find Deal
Mon, 21 Apr - Mon, 28 Apr
11:45 - 18:20LHR-BOS
11h 35m1 stop
20:15 - 08:05BOS-LHR
6h 50mdirect
£409Virgin Atlantic
Find Deal
Wed, 23 Apr - Mon, 28 Apr
20:10 - 22:35LHR-BOS
7h 25mdirect
22:00 - 09:35BOS-LHR
6h 35mdirect
£419Finnair
Find Deal
Mon, 21 Apr - Mon, 28 Apr
20:10 - 22:35LHR-BOS
7h 25mdirect
22:00 - 09:35BOS-LHR
6h 35mdirect
£421Finnair
Find Deal
Wed, 23 Apr - Mon, 28 Apr

Lufthansa flights from London to Boston

Our best Lufthansa deals on London to Boston flight tickets
Lufthansa
8 May
LHR08:30London Heathrow
16h 40m
1 stop
BOS20:10Boston Logan Intl
15 May
BOS22:00Boston Logan Intl
12h 40m
1 stop
LHR15:40London Heathrow
Lufthansa
8 May
LHR13:30London Heathrow
11h 40m
1 stop
BOS20:10Boston Logan Intl
15 May
BOS17:50Boston Logan Intl
9h 50m
1 stop
LHR08:40London Heathrow
Lufthansa
3 May
LHR06:30London Heathrow
14h 10m
1 stop
BOS15:40Boston Logan Intl
3 May
BOS19:26Boston Logan Intl
20h 14m
1 stop
LHR20:40London Heathrow

Finnair flights from London to Boston

Our best Finnair deals on London to Boston flight tickets
Finnair
21 Apr
LHR20:10London Heathrow
7h 25m
BOS22:35Boston Logan Intl
28 Apr
BOS22:00Boston Logan Intl
6h 35m
LHR09:35London Heathrow
Finnair
23 Apr
LHR20:10London Heathrow
7h 25m
BOS22:35Boston Logan Intl
28 Apr
BOS22:00Boston Logan Intl
6h 35m
LHR09:35London Heathrow
Finnair
31 Mar
LHR08:55London Heathrow
7h 25m
BOS11:20Boston Logan Intl
7 Apr
BOS20:00Boston Logan Intl
10h 05m
1 stop
LHR11:05London Heathrow

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?

In general, September is the cheapest month to fly from London to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £410. The month of February is another great option to travel to Boston, with average flight prices from London averaging around £412.

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

The cheapest day to depart on your flight to Boston is on a Wednesday when prices can be found for as low as £512. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £624. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boston.

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

Our most recent data shows that the best time of day to fly to Boston is in the afternoon. Flights from London to Boston during this time can be as low as £519. In the evening is when there is more demand to fly to Boston, so prices are often more expensive at around £701 per ticket.

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 £495 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 £464 on momondo.

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

There are 4 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

£172

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 £172. The best return flight deal from London to Boston found on momondo in the last 72 hours is £293.
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?

    The distance between London and Boston Logan Intl is about 3269.0 mi. 7h 15m is a normal flight duration for this route.

  • 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 are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to Boston Logan Intl Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Boston Logan Intl Airport.

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

    The required travel and health documents for your Boston Logan Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

  • What is the most popular airline from London to Boston?


Best airlines flying from London to Boston

Compare and see reviews for airlines that fly from London to Boston with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £8Free CancellationRating
7.0
1,061 reviews
Search Aer Lingus flights
PLAYPriceFrom £272Free CancellationRating
6.9
97 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom £291Free CancellationRating
7.1
1,825 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom £317Free CancellationRating
7.0
474 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom £338Free CancellationRating
7.3
1,325 reviews
Search Scandinavian Airlines flights
KLMPriceFrom £347Free CancellationRating
7.8
1,318 reviews
Search KLM flights
British AirwaysPriceFrom £350Free CancellationRating
6.6
6,712 reviews
Search British Airways flights
Air FrancePriceFrom £350Free CancellationRating
7.4
1,423 reviews
Search Air France flights
Virgin AtlanticPriceFrom £350Free CancellationRating
7.4
634 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £355Free CancellationRating
7.4
8,605 reviews
Search United Airlines flights
  • Delta Flights From London to Boston

    Delta is one of the most popular airlines flying from London to Boston, operating 11 flights/week on average for this route. A good Delta flight deal for London to Boston starts from £470 round-trip, up to an average price of £688. Our users have rated Delta at 8.0/10.

  • KLM Flights From London to Boston

    KLM (7.8/10 from 1,318 reviews) operates around 11 flights from London to Boston in any given week. The average KLM airfare for this route is around £554, with deals from around £449 rare but found on momondo. Referenced prices are for round-trip London to Boston flight searches in the last 72 hours.


Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Salem
Burlington
Cambridge
Braintree
Needham
Plymouth
South Portland
Everett
York Beach
Brookline
Somerville
Warwick
South Yarmouth
Concord
Revere
Hampton
Amesbury
Hull
Chatham
Laconia

Why use momondo?

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

It is quick and easy to find London to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

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

Flights from London to Boston with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

If you are simply researching potential flights to Boston, momondo offers a useful price alert feature which will track prices for flights to Boston from London and alert you when they change.


An easier way to manage your Boston trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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