Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from London to Philadelphia
The cheapest flights right now
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 0m $914
2 days ago
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 0m $906
2 days ago
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 10m $954
2 days ago
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 10m $984
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
$356
Average price of a round trip
$816
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
7h55
A flight from London to Philadelphia takes on average 7h55.
Best time
July
According to user searches, the ideal month to go to Philadelphia is July.
The best flight deals for a week
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 0m $914
2 days ago
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 0m $906
2 days ago
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 10m $954
2 days ago
London – Philadelphia
Outbound – Nov 16, 2026
direct
8h 5m Return – Nov 24, 2026
direct
7h 10m $984
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.
Tips for finding a cheap flight from London to Philadelphia
Check out our tips for booking your flight to Philadelphia (USA) from London (United Kingdom) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is July, with an average flight ticket price of $583 (calculation over the last two years). The most touristic season corresponds to the months of October, September and November.
For the cheapest flights, it is advisable to buy your ticket at least 54 days before the departure date.
The airline offering the cheapest flight tickets is Easyjet. A ticket from the airline Easyjet to Philadelphia costs on average $355.
The airlines that offer the most flights are American Airlines and American Airlines.
info departure city :
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 a city in the country United Kingdom, the time zone is [[timezone]]. In London, it is currently {fromLocalTime}, the temperature is on average 12°C, with a minimum of 10°C and a maximum of 14°C.
The city of London (LON) has 5 airport(s): London City, London Gatwick, London Heathrow, London Luton and London-Stansted
destination info :
Philadelphia, USA
airports :
Philadelphia International Airport (PHL)
Northeast Philadelphia Airport (PNE)
local time :
Philadelphia is in the country USA, the time zone is [[timezone]]. In Philadelphia, it is currently {toLocalTime}, the temperature is on average 13°C, with a minimum of 8°C and a maximum of 18°C.
The city of Philadelphia (PHL) has 2 airport(s): Philadelphia International and Northeast Philadelphia
Useful info about Philadelphia
What is the least touristic period to go to Philadelphia?
If you want to visit Philadelphia during the least touristic period, choose the month of July.
What is the most popular time to travel to Philadelphia?
In Philadelphia, the most popular month is October. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from London to Philadelphia?
According to our data, it is recommended to book your flight 54 days before your departure. If you book your flight ticket 8 weeks before your departure, you may find a price below average. You can also choose morning flights that are 25% cheaper than afternoon and evening flights. The cheapest day to book a flight from London to Philadelphia is Monday.
What are the arrival and destination airports when traveling between London and Philadelphia?
When you leave, you can leave from London City, London Gatwick, London Heathrow, London Luton or London-Stansted, and you will arrive at Philadelphia International.
How to reach London airport from the city centre?
The airport London City is located 16 km, London Gatwick is located 38 km, London Heathrow is located 35 km, London Luton is located 45 km or London-Stansted is located 49 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from London to Philadelphia?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between London and Philadelphia?
In summer, the average temperature is 24°C in Philadelphia and 18°C in London. The average rainfall in summer is 129 mm in Philadelphia and 63 mm in London. In summer, it is warmer in Philadelphia and it rains less in London. In winter, it is colder in London and it rains more in Philadelphia.
