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Cheap Flights from London Heathrow to Philadelphia

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Compare London Heathrow to Philadelphia flight deals

Find the cheapest month or even day of the year to fly to Philadelphia

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Flight deals from London Heathrow to Philadelphia

Looking for a cheap last-minute deal or the best return flight from London Heathrow to Philadelphia? Find the lowest prices on one-way and return tickets right here.
Philadelphia.Rs108,861 per passenger.Departing Wed, 17 Sep.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Wed, 17 Sep, arriving in Philadelphia International.Price includes taxes and charges.From Rs108,861, select.
Philadelphia.Rs128,803 per passenger.Departing Tue, 17 Jun.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Tue, 17 Jun, arriving in Philadelphia International.Price includes taxes and charges.From Rs128,803, select.
Philadelphia.Rs129,871 per passenger.Departing Wed, 20 Aug.One-way flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Wed, 20 Aug, arriving in Philadelphia International.Price includes taxes and charges.From Rs129,871, select.
Philadelphia.Rs132,424 per passenger.Departing Tue, 16 Dec.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Tue, 16 Dec, arriving in Philadelphia International.Price includes taxes and charges.From Rs132,424, select.
Philadelphia.Rs146,544 per passenger.Departing Wed, 29 Oct.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 29 Oct, arriving in Philadelphia International.Price includes taxes and charges.From Rs146,544, select.
Philadelphia.Rs149,600 per passenger.Departing Wed, 29 Oct.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Wed, 29 Oct, arriving in Philadelphia International.Price includes taxes and charges.From Rs149,600, select.
Philadelphia.Rs150,176 per passenger.Departing Mon, 25 Aug.One-way flight with Iberia.Outbound direct flight with Iberia departs from London Heathrow on Mon, 25 Aug, arriving in Philadelphia International.Price includes taxes and charges.From Rs150,176, select.
Philadelphia.Rs156,226 per passenger.Departing Thu, 13 Nov.One-way flight with KLM.Outbound indirect flight with KLM, departs from London Heathrow on Thu, 13 Nov, arriving in Philadelphia International.Price includes taxes and charges.From Rs156,226, select.

Find the cheapest month to fly from London Heathrow to Philadelphia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Philadelphia flights are currently cheapest in September.
Jun
from Rs128,803
Jul
from Rs174,405
Aug
from Rs129,871
Sep
from Rs108,861
Oct
from Rs146,544
Nov
from Rs156,226
Dec
from Rs132,424
Jan
from Rs211,583
Feb
from Rs241,170
Mar
from Rs197,437
Apr
Find prices
May
from Rs263,604

Direct flights from London Heathrow to Philadelphia

Alternative London Heathrow to Philadelphia routes

Looking for the cheapest, fastest or easiest route from London Heathrow to Philadelphia? You could fly into the following airports instead.

London to Philadelphia: Flight information

The things to know before you go.
Cheapest flight foundRs108,861
Cheapest month to flySeptember
Average flight time7 hrs, 59 mins
Most popular airlineFinnair
Average flights per week99

Finding cheap flights from London Heathrow to Philadelphia: Frequently asked questions

There are 6 airports in Philadelphia: Philadelphia International, Blue Bell, Philadelphia Trenton-Mercer, Greater Wilmington, Atlantic City International, and Allentown.
The best price we found for a return flight from London Heathrow to Philadelphia is Rs164,093. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
7 hours and 59 minutes is the average flight time from London Heathrow to Philadelphia.
Finnair, American Airlines and Iberia fly direct from London Heathrow to Philadelphia.
As of June 2025, there are 99 flights per week flying from London Heathrow to Philadelphia.
The cheapest month to fly from London Heathrow to Philadelphia is usually June 2025.
If you're flying from London Heathrow Airport, the cheapest airport near Philadelphia is Philadelphia International – which is 11.2 km away from the centre of Philadelphia. We've found flights into this airport from Rs164,093.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Philadelphia on Thursday, 6 November 2025.
Yes – the average flight time is 7 hours and 59 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Philadelphia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Philadelphia is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 21°C. July is typically the warmest month in Philadelphia, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -5°C. The rainiest month is July.
Currently, Air Canada and American Airlines offer the cheapest flight tickets to Philadelphia.

Travelling from London Heathrow Airport (LHR) to Philadelphia: what you need to know

  • Expect to be travelling for 7 hours 5 minutes. That's the average journey time for a direct flight from London Heathrow Airport to Philadelphia.

  • London Heathrow Airport is located in London. Following the UTC-4 timezone, Philadelphia is four hours behind London.

  • The most popular route is from London Heathrow Airport (LHR) to Philadelphia International Airport (PHL). You can choose from 18 weekly services between these two airports. If you'd like to get on your way as soon as you can, the earliest flight from LHR to PHL is the 10:05 American Airlines option. If you prefer to leave later in the day, the last departure is at 14:10 with American Airlines.

  • To avoid missing your LHR to Philadelphia flight, leave enough time for things like baggage drop and finding your gate. Turning up two hours ahead of international departures and an hour before domestic flights is the standard rule.

  • Heading off during a peak time like a bank holiday? Expect longer lines at check-in and security. To play it safe, arrive up to four hours before international flights and two hours before domestic departures.

  • Direct London Heathrow Airport to Philadelphia tickets are available for booking. Philadelphia International Airport (PHL) will be your arrival point.

  • Book your ticket with American Airlines. This airline offers direct flights from London Heathrow Airport to Philadelphia.

  • We make it a breeze to book flight tickets from LHR to Philadelphia with a stopover. To see the options, deselect 'Direct flights only.' Next, choose a flight offering a stop long enough to see the sights of your chosen city. Popular stopovers include:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Newark Liberty International Airport (EWR)

    • Logan International Airport (BOS)

  • The journey from central London to LHR takes about 1 hour on public transport. If you drive, ride-share or take a cab, you'll cover the 26 kilometres in 55 minutes or so, depending on traffic.

  • In search of a hotel close to LHR? If you've booked an early flight from London Heathrow Airport to Philadelphia, these stays will put you moments from check-in:

  • When it comes to London Heathrow Airport's on-time performance, data shows 68.18% of flights stick to their scheduled arrival time.

How to find the cheapest flights from London Heathrow Airport (LHR) to Philadelphia

  • Rs108,861 is currently the lowest price for a one-way London Heathrow Airport to Philadelphia flight. Return flight tickets start from Rs164,093. These prices can change based on availability.

  • Get cheap flights from LHR to Philadelphia by booking one month ahead. According to our research, that's the best time for bagging a bargain.

  • The best month for landing cheap London Heathrow Airport to Philadelphia tickets is May. Use the 'Whole month' tool to compare all available prices, then select the dates that offer the biggest savings.

  • Save time searching for cheap flights from LHR to Philadelphia by creating a Price Alert. You'll get an email or notification through the app when a lower fare becomes available.

  • Tailor your flights with filters. Choose your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from London Heathrow Airport to Philadelphia.

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Philadelphia International Airport (PHL) to central Philadelphia takes around 15 minutes to reach by car. The centre is roughly 19 kilometres away.

  • It takes around 45 minutes to get there using public transport.

  • If you're coming in on a late flight from London Heathrow Airport to Philadelphia, few things beat the convenience of staying close to the terminal. Grab your luggage from the carousel and then be showered and sleeping not long after at one of these hotels near PHL:

  • Go wherever you want, whenever you want with a Philadelphia International Airport rental car. Pick up a set of wheels from Dollar, Thrifty or Budget and see more of Philadelphia and beyond.

  • Lock in the lowest price by booking your vehicle from Philadelphia International Airport around three weeks before your flight from LHR to Philadelphia.

  • You'll find PHL at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

  • Trenton-Mercer Airport (TTN) is around 56 kilometres from central Philadelphia. Once you've hopped off your flight from London Heathrow Airport to Philadelphia, it'll take you around 40 minutes to reach the heart of the city in a cab or ride-share.

  • Public transport will get you there in around 1 hour 45 minutes.

  • There are some comfortable places to call home for the night near TTN. Tuck yourself in and get cosy after your LHR to Philadelphia flight at one of these well-located options:

  • Forget about inconvenient public transport timetables or cab lines. Grab a Trenton-Mercer Airport rental car and take your trip in whatever direction you choose. Check out the availability and rates from Budget, National and Enterprise.

  • Avoid paying extra. Reserving your ride four weeks ahead of your arrival at TTN can get you a lower rate.

  • You'll find Trenton-Mercer Airport at Scotch Road, Terminal Building.

Best time to go to Philadelphia

  • Before you book your flights from London Heathrow Airport to Philadelphia, consider which time of year works best for you. Peak season in Philadelphia offers a lively atmosphere and plenty of activities, while low season brings cheaper hotel rates and fewer crowds.

  • Before locking in your London Heathrow Airport to Philadelphia flight ticket, think about the kind of weather forecast you're hoping for. July is the warmest month in Philadelphia, with temperatures ranging from 18ºC to 32ºC.

  • Search for cheap tickets from LHR to Philadelphia in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -7ºC and 9ºC on average.

More about Philadelphia

Explore more of United States

  • New York is just one of the many places in United States waiting to be explored after you've experienced Philadelphia. Around 129 kilometres away to the north-east, top sights here include Statue of Liberty, Central Park and Empire State Building.

  • Boston is another essential stop in United States and is around 434 kilometres north-east of Philadelphia. No journey is complete without seeing Freedom Trail, Museum of Fine Arts Boston and Boston Tea Party Ships & Museum.

Plan the rest of your trip from London to Philadelphia

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.