Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Boston to London
The cheapest flights right now
Boston – London
Outbound – Jun 26, 2026
direct
6h 51m Return – Jul 5, 2026
direct
7h 55m $1,251
2 days ago
Boston – London
Outbound – Jun 26, 2026
direct
6h 46m Return – Jul 5, 2026
direct
7h 55m $1,236
2 days ago
Boston – London
Outbound – Jun 26, 2026
direct
6h 51m Return – Jul 5, 2026
direct
7h 43m $1,209
2 days ago
Boston – London
Outbound – Jun 26, 2026
direct
6h 46m Return – Jul 5, 2026
direct
7h 43m $1,195
2 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$631
Average price of a round trip
$704
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
18h36
A flight from Boston to London takes on average 18h36.
Best time
March
According to user searches, the ideal month to go to London is March.
Tips for finding a cheap flight from Boston to London
Check out our tips for booking your flight to London (United Kingdom) from Boston (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is January, with an average flight ticket price of $405 (calculation over the last two years). The most touristic season corresponds to the months of December, February and November.
For the cheapest flights, it is advisable to buy your ticket at least 16 days before the departure date.
The airline offering the cheapest flight tickets is Air Canada. A ticket from the airline Air Canada to London costs on average $634.
The airlines that offer the most flights are .
Price of flight tickets from Boston to London
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $631 to $808
- The average price of a flight ticket is about $704
- Prices are lowest for stays in the month of January
- The month in which booking a ticket is cheaper is: April
info departure city :
Boston, USA
airport :
Boston-Logan International Airport (BOS)
local time :
Boston is a city in the country USA, the time zone is [[timezone]]. In Boston, it is currently {fromLocalTime}, the temperature is on average 16°C, with a minimum of 7°C and a maximum of 25°C.
The city of Boston has 1 airport(s): Boston-Logan
destination info :
London, United Kingdom
airports :
London City Airport (LCY)
London Gatwick Airport (LGW)
London Heathrow Airport (LHR)
London Luton Airport (LTN)
London-Stansted Airport (STN)
local time :
London is in the country United Kingdom, the time zone is [[timezone]]. In London, it is currently {toLocalTime}, the temperature is on average 14°C, with a minimum of 12°C and a maximum of 17°C.
The city of London (LON) has 5 airport(s): London City, London Gatwick, London Heathrow, London Luton and London-Stansted
Useful info about London
What is the least touristic period to go to London?
If you want to visit London during the least touristic period, choose the month of March.
What is the most popular time to travel to London?
In London, the most popular month is December. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Boston to London?
According to our data, it is recommended to book your flight 16 days before your departure. If you book your flight ticket 3 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Boston to London is Saturday.
What are the arrival and destination airports when traveling between Boston and London?
When you leave, you can leave from Boston-Logan, and you will arrive at London Gatwick or London Heathrow.
How to reach Boston airport from the city centre?
This information is not available at this time.
Are there other means of transportation to go from Boston to London?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Boston and London?
In summer, the average temperature is 18°C in London and 22°C in Boston. The average rainfall in summer is 64 mm in London and 107 mm in Boston. In summer, it is warmer in Boston and it rains less in London. In winter, it is colder in London and it rains more in Boston.