What is the cheapest airline that flies from Boston Logan Intl to London?

Icelandair, SWISS, and United Airlines are the most popular carriers operating from Boston Logan Intl to London

Which airport is the most popular layover for flights between Boston and London?

Reykjavik (KEF) was the most common stop: 58% of momondo users choosing 1-stop flights on this route connected there.

How many flights depart from Boston to London on average per day?

The number of flights available between Boston and London is 28 per day as of January 2026. The most frequent departure time is 7:00PM, with 82% of daily flights leaving in the evening.

How many flights depart from Boston to London on average per week?

As of January 2026, there are 198 flights per week flying from Boston to London. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.

Which airline has the best punctuality record on Boston to London flights?

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

What airlines fly to London?

British Airways, Delta and Iberia are the top three most popular airlines that fly to London from Boston according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when traveling to London. Keep in mind that there are 18 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Boston to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Which layover airport offers the lowest fares from Boston to London?

Flights via New York (JFK) offer the lowest average round-trip price of $68.

Which layover airport has the shortest connection time from Boston to London?

Dublin (DUB) has the shortest average layover time for this route: 1h 28m.

How often are flights from Boston to London delayed?

Historically, on average around 11% of flights between Boston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

Which layover airport has the shortest travel time from Boston to London?

Flights connecting via Shannon (SNN) have the shortest average one-way travel time: 8h 50m.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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

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

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

There are 18 operators available for flights from Boston Logan Intl Airport to London as of January 2026.

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

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 Boston Logan Intl Airport to London.

What documentation or ID do you need to fly to London?

The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$216 Cheap Flights from Boston to London in 2026

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6:15 am - 4:45 pm

BOS

LTN

29h 30m

2 stops

6:20 am - 9:56 am

LTN

BOS

32h 36m

2 stops

$491Multiple Airlines

Thu, Apr 16 - Fri, Apr 24

8:25 pm - 9:15 am

BOS

LHR

8h 50m

1 stop

10:00 am - 5:50 pm

LHR

BOS

11h 50m

1 stop

$491Aer Lingus

Fri, Mar 20 - Mon, Mar 23

12:35 pm - 10:55 am

BOS

LGW

18h 20m

1 stop

11:55 am - 6:50 pm

LGW

BOS

10h 55m

1 stop

$492Icelandair

Wed, Mar 11 - Wed, Mar 18

8:50 pm - 10:55 am

BOS

LGW

10h 05m

1 stop

11:55 am - 11:35 am

LGW

BOS

27h 40m

1 stop

$493Icelandair

Tue, Mar 17 - Tue, Mar 24

10:45 pm - 3:35 pm

BOS

LHR

11h 50m

1 stop

6:00 am - 8:25 pm

LHR

BOS

19h 25m

1 stop

$493TAP AIR PORTUGAL

Wed, Apr 29 - Fri, May 8

7:05 pm - 9:50 am

BOS

LGW

10h 45m

1 stop

9:15 pm - 7:55 pm

LGW

BOS

27h 40m

1 stop

$494TAP AIR PORTUGAL

Wed, Mar 25 - Sun, Mar 29

7:15 pm - 7:00 am

BOS

LHR

6h 45mnonstop

11:25 am - 7:50 pm

LHR

BOS

13h 25m

1 stop

$496Iberia

Thu, Feb 26 - Thu, Mar 5

9:50 pm - 12:55 pm

BOS

LCY

10h 05m

1 stop

9:15 am - 8:00 pm

LCY

BOS

15h 45m

1 stop

$513SWISS

Wed, Feb 25 - Mon, Mar 2

9:50 pm - 12:55 pm

BOS

LCY

10h 05m

1 stop

1:30 pm - 8:20 pm

LCY

BOS

11h 50m

1 stop

$527SWISS

Wed, Feb 18 - Wed, Feb 25

4:45 pm - 8:50 am

BOS

LCY

11h 05m

1 stop

7:50 am - 3:15 pm

LCY

BOS

12h 25m

1 stop

$535Iberia

Tue, Feb 10 - Wed, Feb 18

TAP AIR PORTUGAL flights from Boston to London

Our best TAP AIR PORTUGAL deals on Boston to London flight tickets

TAP AIR PORTUGAL

Apr 29

BOS10:45 pmBoston Logan Intl

14h 00m

1 stop

LHR5:45 pmLondon Heathrow

May 6

LHR11:20 amLondon Heathrow

14h 25m

1 stop

BOS8:45 pmBoston Logan Intl

$493

TAP AIR PORTUGAL

Mar 25

BOS7:05 pmBoston Logan Intl

10h 45m

1 stop

LGW9:50 amLondon Gatwick

Mar 29

LGW9:15 pmLondon Gatwick

27h 40m

1 stop

BOS7:55 pmBoston Logan Intl

$494

TAP AIR PORTUGAL

Mar 18

BOS7:05 pmBoston Logan Intl

16h 00m

1 stop

LGW3:05 pmLondon Gatwick

Mar 29

LGW9:15 pmLondon Gatwick

27h 40m

1 stop

BOS7:55 pmBoston Logan Intl

$497

Iberia flights from Boston to London

Our best Iberia deals on Boston to London flight tickets

Iberia

Feb 26

BOS7:15 pmBoston Logan Intl

6h 45m

LHR7:00 amLondon Heathrow

Mar 5

LHR11:25 amLondon Heathrow

13h 25m

1 stop

BOS7:50 pmBoston Logan Intl

$496

Iberia

Feb 6

BOS4:45 pmBoston Logan Intl

13h 30m

1 stop

LGW11:15 amLondon Gatwick

Feb 8

LGW11:45 amLondon Gatwick

13h 05m

1 stop

BOS7:50 pmBoston Logan Intl

$506

Iberia

Feb 6

BOS4:45 pmBoston Logan Intl

21h 15m

1 stop

LGW7:00 pmLondon Gatwick

Feb 9

LGW11:45 amLondon Gatwick

16h 11m

2 stops

BOS10:56 pmBoston Logan Intl

$516

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Thu 4/16

6:15 am-4:45 pm

2 stops29h 30m

London Luton

Fri 4/24

6:20 am-9:56 am

2 stops32h 36m

$491

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 3/20

8:25 pm-9:15 am

1 stop8h 50m

London Heathrow

Mon 3/23

10:00 am-5:50 pm

1 stop11h 50m

$491

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 3/11

12:35 pm-10:55 am

1 stop18h 20m

London Gatwick

Wed 3/18

11:55 am-6:50 pm

1 stop10h 55m

$492

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 3/17

8:50 pm-10:55 am

1 stop10h 05m

London Gatwick

Tue 3/24

11:55 am-11:35 am

1 stop27h 40m

$493

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 4/29

10:45 pm-3:35 pm

1 stop11h 50m

London Heathrow

Fri 5/8

6:00 am-8:25 pm

1 stop19h 25m

$493

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 3/25

7:05 pm-9:50 am

1 stop10h 45m

London Gatwick

Sun 3/29

9:15 pm-7:55 pm

1 stop27h 40m

$494

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 2/26

7:15 pm-7:00 am

Nonstop6h 45m

London Heathrow

Thu 3/5

11:25 am-7:50 pm

1 stop13h 25m

$496

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Wed 2/25

9:50 pm-12:55 pm

1 stop10h 05m

London City

Mon 3/2

9:15 am-8:00 pm

1 stop15h 45m

$513

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Wed 2/18

9:50 pm-12:55 pm

1 stop10h 05m

London City

Wed 2/25

1:30 pm-8:20 pm

1 stop11h 50m

$527

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Tue 2/10

4:45 pm-8:50 am

1 stop11h 05m

London City

Wed 2/18

7:50 am-3:15 pm

1 stop12h 25m

$535

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Boston to London

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

Prices

Airlines

Delays

Layovers

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Boston is in October. Flight prices, which tend to average around $517, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Boston averaging around $544.

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

The cheapest day to depart from Boston to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $660. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $717. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Boston in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $619 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $695. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

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

You are more likely to see cheaper flights to London from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $634 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Boston for as low as $611 on momondo.

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

There are 4 cabin classes available to choose from on Boston Logan Intl to London 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 Boston to London flights?

You could potentially save up to 20% on your flight if you consider stops on a Boston to London flight.

How have Boston to London flight prices changed over time?

As of January 2026, prices for Boston to London flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from Boston to London

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

Estimated round-trip price

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

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

Best Price Found	$271
Fastest flight time	6h 30m
Direct flights	Every day
Airports in London	6 airports

The best one-way flight to London from Boston in the past 72 hours is $271. The best round-trip flight deal from Boston to London found on momondo in the last 72 hours is $528.

The fastest flight from Boston to London takes 6h 30m

Direct flights go from Boston to London every day.

There are 6 airports in London. From Boston there are direct flights to London Heathrow (LHR), London Gatwick (LGW).

Search flight deals

How far is Boston Logan Intl to London by plane?
There are 3269.0 mi between Boston Logan Intl and London. In terms of flight time, this usually takes a little over 6h 30m.
When did momondo last update prices for flights from Boston Logan Intl Airport to London?
Prices for flights from Boston Logan Intl Airport to London were last updated today.
How many operators does momondo search for flights from Boston Logan Intl Airport to London?
There are 18 operators available for flights from Boston Logan Intl Airport to London as of January 2026.
How old do you have to be to fly from Boston Logan Intl Airport to London?
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 Boston Logan Intl Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Boston to London?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Boston to London is Boeing 777-200/200ER (25.76% of total bookings). The next most popular plane models are Boeing 777 (21.17%), Airbus A330-900neo (15.44%), and Boeing 787-10 Dreamliner (9.53%).
What is the most popular airline from Boston to London?
momondo data reveals that the most frequently booked airline on the route from Boston to London is British Airways, representing 34% of all bookings. The subsequent popular airlines are Iberia at 12%, Delta at 12%, and Virgin Atlantic at 10%.

Best airlines flying from Boston to London

Compare and see reviews for airlines that fly from Boston to London with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $266	Free Cancellation	Rating 7.2 2,891 reviews	Search JetBlue flights
SWISS	PriceFrom $320	Free Cancellation	Rating 7.6 1,863 reviews	Search SWISS flights
PLAY	PriceFrom $380	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $393	Free Cancellation	Rating 7.3 1,672 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom $425	Free Cancellation	Rating 7.1 2,130 reviews	Search TAP AIR PORTUGAL flights
American Airlines	PriceFrom $460	Free Cancellation	Rating 7.2 11,201 reviews	Search American Airlines flights
Icelandair	PriceFrom $465	Free Cancellation	Rating 7.1 603 reviews	Search Icelandair flights
Lufthansa	PriceFrom $466	Free Cancellation	Rating 6.8 7,749 reviews	Search Lufthansa flights
Air France	PriceFrom $467	Free Cancellation	Rating 7.4 1,528 reviews	Search Air France flights
Finnair	PriceFrom $467	Free Cancellation	Rating 7.6 1,356 reviews	Search Finnair flights

Delta Flights From Boston to London
Delta is one of the most popular airlines flying from Boston to London, operating 13 flights/week on average for this route. A good Delta flight deal for Boston to London starts from $515 round-trip, up to an average price of $874. Our users have rated Delta at 7.9/10.
KLM Flights From Boston to London
Another popular option for Boston to London flights is KLM (7.7/10, 1,443 ratings). KLM flies from Boston to London around 13 times per week, with deals starting from $492 round-trip and rising to an average price of around $609.

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Guildford

Crawley

Wembley

Dartford

Hayes

Brentwood

Harrow

Watford

Cobham

Folkestone

Romford

Stansted

Croydon

Richmond

Why use momondo?

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

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 Boston to London for you.

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

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

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

Once you have performed a search for Boston to London 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 Boston to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Boston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

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Flights to Manchesterfrom $362

Flights to Edinburghfrom $385

Flights to Birminghamfrom $405

Flights to Glasgowfrom $400

Flights to Newcastle upon Tynefrom $423

Flights to Belfastfrom $513

Flights to Bristolfrom $460

Flights to Invernessfrom $394

Flights to Liverpoolfrom $466

Flights to Aberdeenfrom $479

Flights to Leedsfrom $435

Flights to Cardifffrom $431

Cheap flights from Boston to London from $216

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to London departing on 3/24. 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 flights from Boston to London

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Our best Iberia deals on Boston to London flight tickets

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Use the filters below to find and compare flights from Boston to London that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Boston to London

What is the cheapest month to fly to London?

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

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

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

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

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

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

There are 4 cabin classes available to choose from on Boston Logan Intl to London 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 Boston to London flights?

You could potentially save up to 20% on your flight if you consider stops on a Boston to London flight.

How have Boston to London flight prices changed over time?

As of January 2026, prices for Boston to London flights are approximately 2% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Boston Logan Intl to London?

Icelandair, SWISS, and United Airlines are the most popular carriers operating from Boston Logan Intl to London

What airlines fly to London?

How often are flights from Boston to London delayed?

Historically, on average around 11% of flights between Boston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

What is the most punctual flight time for Boston to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Boston to London flights?

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Boston and London?

Reykjavik (KEF) was the most common stop: 58% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Boston to London?

Flights via New York (JFK) offer the lowest average round-trip price of $68.

Which layover airport has the shortest travel time from Boston to London?

Flights connecting via Shannon (SNN) have the shortest average one-way travel time: 8h 50m.

Which layover airport has the shortest connection time from Boston to London?

Dublin (DUB) has the shortest average layover time for this route: 1h 28m.

How many flights depart from Boston to London on average per day?

The number of flights available between Boston and London is 28 per day as of January 2026. The most frequent departure time is 7:00PM, with 82% of daily flights leaving in the evening.

How many flights depart from Boston to London on average per week?

As of January 2026, there are 198 flights per week flying from Boston to London. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.

When to book flights from Boston to London

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in London

How far is Boston Logan Intl to London by plane?

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

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

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

What documentation or ID do you need to fly to London?

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

What is the most popular airline from Boston to London?

Best airlines flying from Boston to London

Compare and see reviews for airlines that fly from Boston to London with momondo

Delta Flights From Boston to London

KLM Flights From Boston to London

Traveling to a place near London?

Why use momondo?

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

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