Cheap flights from Boston (BOS) to London (LON)

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The best prices from Boston to London are usually found in January or March, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

How to find the cheapest flight from
Boston (BOS) to London (LON)

All the information you need to plan the best BOS to LON flight in 2021: compare Boston to London flight prices with the expected peak season, weather and rainfall in London.
BOS - LON
Price
$356 - $552
LON
Temperature
48.2 - 73.4 °F
LON
Rainfall
1.4 - 2.8 inches

Popular in

December

High demand for flights, 25% potential price rise

Cheapest in

January

Best time to find cheap flights, 14% potential price drop

Round-trip from

$356

From Boston to London

One-way from

$269

One-way flight from Boston to London

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Boston to London?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 9% when planning your travel around this day of the week.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 44% on flights from Boston to London compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $910. For sooner than that we have options available in the next 3 days from $1,146.

What is the cheapest month to fly from Boston to London?

The best pricing can be found in the month of October. Prices to London from Boston average $714. You can even find prices in October for less than $714, as users have found deals to London from as low as $445. The month of July appears to be one of the more expensive times to travel to London from Boston. Flying in the targeted month can save you up to 31%.

When is the cheapest time to fly from Boston to London (BOS - LON)?

It’s optimal to fly from Boston to London in the morning. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight at noon.

Cheap flights from Boston to London in July, August 2021

The best prices found for BOS to LON flights for July, August
22 Aug - 30 Aug
$579pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
3 Aug - 11 Aug
$584pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
24 Aug - 2 Dec
$585pp
BOS
Boston Logan Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
BOS
Boston Logan Intl

Boston to London 2021 flight deals

Cheap flights to London from Boston found for this year
11 Dec - 28 May
$320pp
BOS
Boston Logan Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
BOS
Boston Logan Intl
3 Nov - 24 Nov
$349pp
BOS
Boston Logan Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
BOS
Boston Logan Intl
14 Nov - 21 Nov
$379pp
BOS
Boston Logan Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
BOS
Boston Logan Intl

Non-stop flights to London from Boston

Save time with Boston to London direct flight deals
22 Dec - 4 Jan
$609pp
BOS
Boston Logan Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
BOS
Boston Logan Intl
12 Jan - 26 Jan
$615pp
BOS
Boston Logan Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
BOS
Boston Logan Intl
29 Dec - 5 Jan
$619pp
BOS
Boston Logan Intl
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
BOS
Boston Logan Intl

Last minute flights from Boston to London

Late deals on round-trip flights to London from Boston, departing today and this week
27 Jul - 3 Aug
$629pp
BOS
Boston Logan Intl
Air Canada
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Air Canada
   
2 STOPS
BOS
Boston Logan Intl
29 Jul - 5 Aug
$639pp
BOS
Boston Logan Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
BOS
Boston Logan Intl
27 Jul - 3 Aug
$641pp
BOS
Boston Logan Intl
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
BOS
Boston Logan Intl

One-way flights to London from Boston

The cheapest one-way flights from Boston to London
4:25 pm - 4:00 am
Iberia
Nonstop
6h 35m
BOS - LHR
Iberia
$269
SnapTravelAir
5:50 pm - 7:05 pm
Alitalia
1 Stop
20h 15m
BOS - LHR
Alitalia
$292
mytrip.com
2:20 pm - 6:55 pm
TAP AIR PORTUGAL
1 Stop
23h 35m
BOS - LHR
TAP AIR PORTUGAL

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Boston</span> to <span class="emphasized">London</span> flights.

Flight FAQs

From Boston to London

Are flight prices decreasing from Boston to London due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Boston and London for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Boston Logan Intl to London have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like British Airways, Virgin Atlantic, and Delta flying from Boston Logan Intl to London have implemented new flexible cancellation policies.

What airport do you fly from for flights from Boston to London?

Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Boston to London. 25 airlines have flights from Logan Intl to London on a regular basis. Booking flights from Boston Logan Intl to London should not be difficult; the airport handles an average of 13 outbound flights to London per day.

Can I find flights from Boston to London for under $400 on Cheapflights?

Yes, there are multiple flights from Boston to London for under $400. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $320, but on average you can expect to pay $381.

Are there nonstop flights from Boston to London for under $700 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to London under $700. A good price for a nonstop flight from Boston to London is less than $634.

Are there last-minute flights available from Boston to London for under $700?

There are currently 20+ open flights from Boston to London within the next 7 days for less than $700.

Is Boston weather warmer or cooler than London?

We forecast the temperature to be around the 84 °F's in July, on average. The temperature in London is generally colder than in Boston. Book flights in a timely manner in correlation to your departure date.

How long is the flight from Boston to London?

For as low as $678, Delta can have you in London from Boston in 9h 05m. Both multi-stop and nonstop flights can be found to your destination and back.

What is the cheapest airline to fly from Boston to London round-trip?

TAP AIR PORTUGAL, at $320, was found to be the cheapest airline from Boston to London.. Users have found that TAP AIR PORTUGAL is 23% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Boston to London one-way?

The cheapest airlines for a one-way flight from Boston to London are Iberia ($211), Alitalia ($218), and TAP AIR PORTUGAL ($270).

COVID Restrictions

View COVID Travel Restrictions for London, England

Can I fly to London from Boston Logan Intl right now?

Information is based on travel restrictions from Boston Logan Intl to London

Most visitors from Boston Logan Intl need to provide a negative COVID-19 test result and/or quarantine to enter London.

COVID-19 testing requirements
Visitors from Boston Logan Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

Quarantine requirements
Visitors from Boston Logan Intl are not required to quarantine after entering London.

Documents
Mandatory passenger locator form - Submit the form any time in the 48 hours before arriving in the UK. Show the form when checking in your plane, train or ferry to the UK.

Managed quarantine package for Scotland - All travelers arriving directly to Scotland are required to book their Managed Quarantine Package prior to travel.

COVID-19 testing package - All travelers must book and pay for a COVID-19 Testing Package prior to travel to England and Scotland.


Can I fly back to Boston Logan Intl from London?

Returning to Boston Logan Intl from London

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Boston Logan Intl.

Quarantine requirements
Visitors from London are not required to quarantine after entering Boston Logan Intl.

Hide COVID Travel Restrictions for London, England

Alternative routes for Boston to London

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for London

Things to know before you go - useful duration and weather info for your trip from Boston to London.
Today's exchange rate
$1 = £0.74
Average temperature for July in London
73.4 °F
Avg rainfall for July in London
1.6 ″

Airports servicing Boston

Airports servicing London

Gatwick (LGW)
City (LCY)
Stansted (STN)
Luton (LTN)
Southend (SEN)

Top 10 airlines flying from Boston to London

The chart below displays the airlines Cheapflights users traveling from Boston to London choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
WOW air
$281 $475 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by WOW air. Please check directly on their website for additional information.

Lufthansa
$305 $496 No cancel fee 76%
SWISS
$346 $535 No cancel fee 79%
KLM
$320 $575 No cancel fee 75%
Finnair
$337 $582 No cancel fee 76%
United Airlines
$339 $620 No cancel fee 69%
TAP AIR PORTUGAL
$304 $650 No cancel fee N/A
Air Canada
$340 $662 No cancel fee 67%
SAS
$407 $744 No cancel fee 77%
Austrian Airlines
$389 $754 No cancel fee 78%

Hourly flight availability from Boston to London

See what time of day planes typically take off from Boston towards London.
Evening 6 PM to midnight 100% of BOS to LON departures
Early morning Midnight to 6 AM 0% of BOS to LON departures
Morning 6 AM to noon 0% of BOS to LON departures
Afternoon Noon to 6 PM 0% of BOS to LON departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Boston to London
See how many times per day planes take to the skies headed from Boston to London.
Sunday
12 daily flights
Monday
17 daily flights
Tuesday
12 daily flights
Wednesday
17 daily flights
Thursday
12 daily flights
Friday
12 daily flights
Saturday
10 daily flights
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