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Cheap flights from London to Boston from $225

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 5/7. 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 round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from London to Boston.
PLAY Logo
11:40 am - 5:50 pmSTN-BOS
11h 10m1 stop
PLAY Logo
7:15 pm - 10:40 amBOS-STN
10h 25m1 stop
$391PLAY
Find Deal
Mon, May 12 - Mon, May 19
 Logo
7:05 am - 1:55 pmSTN-BOS
35h 50m2 stops
 Logo
4:15 pm - 11:59 pmBOS-STN
26h 44m2 stops
Tue, May 6 - Sun, May 11
Delta Logo
12:00 pm - 10:34 pmLGW-BOS
15h 34m1 stop
Delta Logo
5:05 pm - 10:00 amBOS-LGW
11h 55m1 stop
$420Delta
Find Deal
Wed, Jun 18 - Mon, Jun 23
JetBlue Logo
12:10 pm - 3:03 pmLGW-BOS
7h 53mnonstop
JetBlue Logo
9:55 pm - 9:35 amBOS-LGW
6h 40mnonstop
$449JetBlue
Find Deal
Wed, Jun 18 - Mon, Jun 23
British Airways Logo
3:05 pm - 11:26 pmLGW-BOS
13h 21m1 stop
British Airways Logo
1:20 pm - 8:10 amBOS-LGW
13h 50m1 stop
$457British Airways
Find Deal
Wed, Apr 30 - Wed, May 14
British Airways Logo
1:25 pm - 6:45 pmLHR-BOS
10h 20m1 stop
British Airways Logo
7:25 am - 6:55 pmBOS-LHR
6h 30mnonstop
$458British Airways
Find Deal
Wed, Sep 17 - Wed, Sep 24
American Airlines Logo
3:05 pm - 10:49 pmLGW-BOS
12h 44m1 stop
American Airlines Logo
1:20 pm - 8:10 amBOS-LGW
13h 50m1 stop
$473American Airlines
Find Deal
Tue, May 6 - Mon, May 19
American Airlines Logo
3:05 pm - 10:49 pmLGW-BOS
12h 44m1 stop
American Airlines Logo
1:20 pm - 8:10 amBOS-LGW
13h 50m1 stop
$476American Airlines
Find Deal
Tue, May 6 - Thu, May 22
JetBlue Logo
12:10 pm - 3:03 pmLGW-BOS
7h 53mnonstop
JetBlue Logo
9:55 pm - 9:35 amBOS-LGW
6h 40mnonstop
$479JetBlue
Find Deal
Wed, Jun 18 - Sun, Jun 22
Delta Logo
9:55 am - 4:25 pmLHR-BOS
11h 30m1 stop
Delta Logo
8:15 pm - 8:05 amBOS-LHR
6h 50mnonstop
$496Delta
Find Deal
Mon, May 12 - Mon, May 19

PLAY flights from London to Boston

Our best PLAY deals on London to Boston flight tickets
PLAY
May 12
STN11:40 amLondon Stansted
11h 10m
1 stop
BOS5:50 pmBoston Logan Intl
May 19
BOS7:15 pmBoston Logan Intl
10h 25m
1 stop
STN10:40 amLondon Stansted
PLAY
May 6
STN11:40 amLondon Stansted
11h 10m
1 stop
BOS5:50 pmBoston Logan Intl
May 20
BOS7:15 pmBoston Logan Intl
10h 25m
1 stop
STN10:40 amLondon Stansted
PLAY
May 12
STN11:40 amLondon Stansted
11h 10m
1 stop
BOS5:50 pmBoston Logan Intl
May 18
BOS7:15 pmBoston Logan Intl
10h 25m
1 stop
STN10:40 amLondon Stansted

Air Canada flights from London to Boston

Our best Air Canada deals on London to Boston flight tickets
Air Canada
Sep 10
LHR6:50 amLondon Heathrow
12h 41m
2 stops
BOS2:31 pmBoston Logan Intl
Sep 24
BOS10:20 amBoston Logan Intl
15h 10m
1 stop
LHR6:30 amLondon Heathrow
Air Canada
May 7
LHR8:40 amLondon Heathrow
14h 17m
2 stops
BOS5:57 pmBoston Logan Intl
May 12
BOS3:20 pmBoston Logan Intl
15h 30m
2 stops
LHR11:50 amLondon Heathrow
Air Canada
Apr 23
LHR6:00 amLondon Heathrow
15h 52m
2 stops
BOS4:52 pmBoston Logan Intl
Apr 28
BOS3:40 pmBoston Logan Intl
15h 10m
2 stops
LHR11:50 amLondon 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 $530. If you aren’t able to travel during the month of September, then book flights to Boston from London during February instead. Flights to Boston in February, while not as cheap as those in September, still average around $533.

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 $689. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Saturday is $797.

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

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from London to Boston in the afternoon for as low as $668. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Boston, so prices are often more expensive at around $814 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 $641 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 $583 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 April 2025, prices for London to Boston flights are approximately 18% 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 round-trip 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

$225

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 $225. The best round-trip flight deal from London to Boston found on momondo in the last 72 hours is $391.
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?

    A flight from London to Boston Logan Intl will travel around 3269.0 mi. By plane, this route typically takes 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 are updated daily.

  • 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?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
Scandinavian AirlinesPriceFrom $341Free CancellationRating
7.3
1,335 reviews
Search Scandinavian Airlines flights
FinnairPriceFrom $355Free CancellationRating
7.6
1,269 reviews
Search Finnair flights
JetBluePriceFrom $360Free CancellationRating
7.3
2,926 reviews
Search JetBlue flights
PLAYPriceFrom $375Free CancellationRating
7.0
99 reviews
Search PLAY flights
IcelandairPriceFrom $414Free CancellationRating
7.0
481 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $418Free CancellationRating
7.1
1,837 reviews
Search TAP AIR PORTUGAL flights
IberiaPriceFrom $482Free CancellationRating
7.0
2,673 reviews
Search Iberia flights
American AirlinesPriceFrom $492Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $492Free CancellationRating
6.6
6,765 reviews
Search British Airways flights
Air FrancePriceFrom $497Free CancellationRating
7.5
1,435 reviews
Search Air France flights
  • Delta Flights From London to Boston

    Delta flight deals from London to Boston start from $545 round-trip. Over the 20 Delta flights for this route in a normal week, average airfare is usually $759 round-trip - but some users have found much cheaper deals with momondo.

  • KLM Flights From London to Boston

    KLM is also a popular choice for this route. KLM flight deals for London to Boston start from as low as $501 round-trip, depending on your selected dates, with average KLM deals seen on momondo around $592. KLM operates 20 flights to Boston from London in an average week. Users have rated it 7.8/10 across 1,323 reviews.


Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Hampton
Old Orchard Beach
Nashua
Plymouth
York Beach
Cambridge
Brockton
Laconia
Concord
Everett
Warwick
Middletown
Wells
Narragansett
Kennebunkport
Revere
Gloucester

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?

Yes. momondo allows you to filter the results for London to Boston flights to just show those with flexible booking policies.

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

Once you have performed a search for London to Boston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Boston from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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