Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Philadelphia to London
The cheapest flights right now
Philadelphia – London
Outbound – Nov 15, 2026
1 stop
9h 10m DUB
Return – Nov 24, 2026
1 stop
12h 15m DUB
$673
2 days ago
Philadelphia – London
Outbound – Nov 15, 2026
1 stop
9h 10m DUB
Return – Nov 24, 2026
1 stop
12h 15m DUB
$668
yesterday
Philadelphia – London
Outbound – Nov 15, 2026
1 stop
10h 35m DUB
Return – Nov 24, 2026
1 stop
11h 30m DUB
$667
2 days ago
Philadelphia – London
Outbound – Nov 15, 2026
1 stop
10h 35m DUB
Return – Nov 24, 2026
1 stop
12h 20m DUB
$664
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
$587
Average price of a round trip
$782
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
7h12
A flight from Philadelphia to London takes on average 7h12.
Best time
September
According to user searches, the ideal month to go to London is September.
Tips for finding a cheap flight from Philadelphia to London
Check out our tips for booking your flight to London (United Kingdom) from Philadelphia (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is December, with an average flight ticket price of $603 (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 73 days before the departure date.
The airline offering the cheapest flight tickets is Frontier Airlines. A ticket from the airline Frontier Airlines to London costs on average $792.
The airlines that offer the most flights are Finnair, British Airways and Finnair.
Price of flight tickets from Philadelphia to London
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $587 to $1184
- The average price of a flight ticket is about $782
- Prices are lowest for stays in the month of December
- The month in which booking a ticket is cheaper is: December
info departure city :
Philadelphia, USA
airports :
Philadelphia International Airport (PHL)
Northeast Philadelphia Airport (PNE)
local time :
Philadelphia is a city in the country USA, the time zone is [[timezone]]. In Philadelphia, it is currently {fromLocalTime}, the temperature is on average 18°C, with a minimum of 15°C and a maximum of 22°C.
The city of Philadelphia (PHL) has 2 airport(s): Philadelphia International and Northeast Philadelphia
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 11°C and a maximum of 16°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 September.
What is the most popular time to travel to London?
In London, 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 Philadelphia to London?
According to our data, it is recommended to book your flight 73 days before your departure. If you book your flight ticket 11 weeks before your departure, you may find a price below average. The cheapest day to book a flight from Philadelphia to London is Tuesday.
What are the arrival and destination airports when traveling between Philadelphia and London?
When you leave, you can leave from Philadelphia International, and you will arrive at London City, London Gatwick, London Heathrow, London Luton, London Southend or London-Stansted.
How to reach Philadelphia airport from the city centre?
The airport Philadelphia International is located 12 km or Northeast Philadelphia is located 20 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 Philadelphia to London?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Philadelphia and London?
In summer, the average temperature is 18°C in London and 24°C in Philadelphia. The average rainfall in summer is 63 mm in London and 129 mm in Philadelphia. 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.
