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 140 minutes.

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

Icelandair, KLM, 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: 63% of momondo users choosing 1-stop flights on this route connected there.

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

Friday 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.

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

As of December 2025, there are 201 flights per week flying from Boston to London. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.

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

Flights via New York (JFK) offer the lowest average round-trip price of $157.

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 airlines fly to London?

British Airways, Delta and Virgin Atlantic 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 51% 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.

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

Reykjavik (KEF) has the shortest average layover time for this route: 1h 35m.

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 December 2025. The most frequent departure time is 7:00PM, with 84% of daily flights leaving in the evening.

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 8% of their flights experiencing any sort of delay.

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.

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 December 2025.

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.

$194 Cheap Flights from Boston to London in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from $585 to $992. The lowest price recently found on this route was $503.

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7:15 pm - 7:00 am

BOS

LHR

6h 45mnonstop

11:40 am - 2:20 pm

LHR

BOS

7h 40mnonstop

$503British Airways

mié., dic. 31 - jue., ene. 15

7:50 pm - 6:15 pm

BOS

LTN

17h 25m2 stops

5:50 am - 5:50 pm

LTN

BOS

17h 00m2 stops

$503Multiple Airlines

sáb., ene. 17 - vie., ene. 23

7:00 am - 10:00 am

BOS

LGW

22h 00m1 stop

9:50 am - 8:55 pm

LGW

BOS

16h 05m1 stop

$503Multiple Airlines

lun., feb. 2 - mar., mar. 3

10:15 am - 9:05 pm

BOS

STN

29h 50m3 stops

9:45 pm - 6:02 pm

STN

BOS

25h 17m2 stops

$503Multiple Airlines

mié., feb. 18 - dom., feb. 22

10:40 pm - 3:25 pm

BOS

LGW

11h 45m1 stop

11:45 am - 7:50 pm

LGW

BOS

13h 05m1 stop

$504Iberia

lun., feb. 23 - jue., feb. 26

7:12 pm - 6:55 am

BOS

LHR

6h 43mnonstop

9:20 am - 12:16 pm

LHR

BOS

7h 56mnonstop

$504JetBlue

jue., ene. 29 - mié., feb. 4

10:15 am - 8:05 pm

BOS

STN

28h 50m3 stops

9:45 pm - 3:57 pm

STN

BOS

23h 12m2 stops

$504Multiple Airlines

sáb., ene. 31 - sáb., feb. 7

6:40 pm - 8:35 pm

BOS

LHR

20h 55m1 stop

9:00 am - 8:20 pm

LHR

BOS

16h 20m1 stop

$505United Airlines

vie., feb. 13 - mié., feb. 18

12:35 pm - 10:55 am

BOS

LGW

18h 20m1 stop

3:40 pm - 10:10 pm

LGW

BOS

11h 30m1 stop

$506Icelandair

mié., mar. 18 - mié., abr. 1

8:50 pm - 5:20 pm

BOS

LCY

15h 30m1 stop

8:40 am - 10:18 pm

LCY

BOS

18h 38m2 stops

$531Virgin Atlantic

dom., ene. 11 - mar., ene. 13

British Airways flights from Boston to London

Our best British Airways deals on Boston to London flight tickets

British Airways

Dec 31

BOS7:15 pmBoston Logan Intl

6h 45m

LHR7:00 amLondon Heathrow

Jan 15

LHR1:30 pmLondon Heathrow

7h 45m

BOS4:15 pmBoston Logan Intl

$503

Find similar

British Airways

Jan 8

BOS7:15 pmBoston Logan Intl

6h 45m

LHR7:00 amLondon Heathrow

Jan 15

LHR1:30 pmLondon Heathrow

7h 45m

BOS4:15 pmBoston Logan Intl

$510

Find similar

British Airways

Jan 23

BOS4:45 pmBoston Logan Intl

13h 05m

1 stop

LGW10:50 amLondon Gatwick

Jan 25

LGW11:45 amLondon Gatwick

13h 05m

1 stop

BOS7:50 pmBoston Logan Intl

$527

Find similar

United Airlines flights from Boston to London

Our best United Airlines deals on Boston to London flight tickets

United Airlines

Dec 31

BOS5:20 amBoston Logan Intl

24h 30m

1 stop

LHR10:50 amLondon Heathrow

Jan 23

LHR1:25 pmLondon Heathrow

30h 27m

1 stop

BOS2:52 pmBoston Logan Intl

$504

Find similar

United Airlines

Feb 13

BOS6:40 pmBoston Logan Intl

20h 55m

1 stop

LHR8:35 pmLondon Heathrow

Feb 18

LHR9:00 amLondon Heathrow

16h 20m

1 stop

BOS8:20 pmBoston Logan Intl

$505

Find similar

United Airlines

Dec 31

BOS5:20 amBoston Logan Intl

24h 30m

1 stop

LHR10:50 amLondon Heathrow

Jan 10

LHR9:00 amLondon Heathrow

30h 02m

2 stops

BOS10:02 amBoston Logan Intl

$508

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

mié. 12/31

7:15 pm-7:00 am

Nonstop6h 45m

London Heathrow

jue. 1/15

11:40 am-2:20 pm

Nonstop7h 40m

$503

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

sáb. 1/17

7:50 pm-6:15 pm

2 stops17h 25m

London Luton

vie. 1/23

5:50 am-5:50 pm

2 stops17h 00m

$503

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

lun. 2/2

7:00 am-10:00 am

1 stop22h 00m

London Gatwick

mar. 3/3

9:50 am-8:55 pm

1 stop16h 05m

$503

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

mié. 2/18

10:15 am-9:05 pm

3 stops29h 50m

London Stansted

dom. 2/22

9:45 pm-6:02 pm

2 stops25h 17m

$503

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

lun. 2/23

10:40 pm-3:25 pm

1 stop11h 45m

London Gatwick

jue. 2/26

11:45 am-7:50 pm

1 stop13h 05m

$504

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

jue. 1/29

7:12 pm-6:55 am

Nonstop6h 43m

London Heathrow

mié. 2/4

9:20 am-12:16 pm

Nonstop7h 56m

$504

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

sáb. 1/31

10:15 am-8:05 pm

3 stops28h 50m

London Stansted

sáb. 2/7

9:45 pm-3:57 pm

2 stops23h 12m

$504

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

vie. 2/13

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

mié. 2/18

9:00 am-8:20 pm

1 stop16h 20m

$505

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

mié. 3/18

12:35 pm-10:55 am

1 stop18h 20m

London Gatwick

mié. 4/1

3:40 pm-10:10 pm

1 stop11h 30m

$506

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

dom. 1/11

8:50 pm-5:20 pm

1 stop15h 30m

London City

mar. 1/13

8:40 am-10:18 pm

2 stops18h 38m

$531

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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 $546.

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 $657. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $719. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $623 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $696. 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 $635 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 $593 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?

No. A direct flight is the cheapest option for a flight between Boston to London.

How have Boston to London flight prices changed over time?

As of December 2025, prices for Boston to London flights are approximately 16% 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	$268
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 $268. The best round-trip flight deal from Boston to London found on momondo in the last 72 hours is $477.

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 December 2025.
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 (25.98% of total bookings). The next most popular plane models are Boeing 777 (24.17%), Boeing 787-10 Dreamliner (10.95%), and Airbus A330-900neo (10.63%).
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 32% of all bookings. The subsequent popular airlines are Delta at 12%, Iberia at 11%, and Virgin Atlantic at 11%.

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 $320	Free Cancellation	Rating 7.2 2,897 reviews	Search JetBlue flights
SWISS	PriceFrom $320	Free Cancellation	Rating 7.5 1,815 reviews	Search SWISS flights
TAP AIR PORTUGAL	PriceFrom $367	Free Cancellation	Rating 7.2 2,091 reviews	Search TAP AIR PORTUGAL flights
PLAY	PriceFrom $382	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $393	Free Cancellation	Rating 7.4 1,606 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom $401	Free Cancellation	Rating 7.7 1,428 reviews	Search KLM flights
Air Canada	PriceFrom $412	Free Cancellation	Rating 7.1 10,534 reviews	Search Air Canada flights
Air France	PriceFrom $434	Free Cancellation	Rating 7.4 1,507 reviews	Search Air France flights
Icelandair	PriceFrom $456	Free Cancellation	Rating 7.0 591 reviews	Search Icelandair flights
American Airlines	PriceFrom $458	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights

Delta Flights From Boston to London
Delta is one of the most popular airlines flying from Boston to London, operating 17 flights/week on average for this route. A good Delta flight deal for Boston to London starts from $508 round-trip, up to an average price of $869. 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, 1,428 ratings). KLM flies from Boston to London around 17 times per week, with deals starting from $401 round-trip and rising to an average price of around $624.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Wembley

Watford

Ilford

Cobham

Folkestone

Romford

Richmond

Uxbridge

Stansted

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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Cheap flights from Boston to London from $194

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 1/14. 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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See travel insights to London from

How to get the cheapest flight ticket from Boston to London

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

No. A direct flight is the cheapest option for a flight between Boston to London.

How have Boston to London flight prices changed over time?

As of December 2025, prices for Boston to London flights are approximately 16% 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, KLM, 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 140 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?

Friday 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 8% 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: 63% 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 $157.

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?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 35m.

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 December 2025. The most frequent departure time is 7:00PM, with 84% of daily flights leaving in the evening.

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

As of December 2025, there are 201 flights per week flying from Boston to London. The most common day of the week flights depart is Wed, with 17% 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?