Cheap Flights from London (LHR) to Philadelphia (PHL) from £412

Cheap Flights from London (LHR) to Philadelphia (PHL)

Prices were available within the past 7 days and starts at £412 for one-way flights and £425 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
TAP Portugal
British Airways
British Airways
British Airways
British Airways
American Airlines
Iberia
Aer Lingus
Delta
TAP Portugal
TAP Portugal
TAP Portugal
British Airways
Air Canada
Aer Lingus
Icelandair
Qatar Airways
Air Canada
Lufthansa
Flight from London to Philadelphia route information
Origin AirportHeathrow
Destination AirportPhiladelphia Intl.
Airlines ServingAer Lingus, Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic
Flight Price£424
Distance5656 km

Compare flights from London to Philadelphia easily and book in confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Philadelphia. Operating between them 12 flights per day, 20 airlines cover the route. And American Airlines, Qatar Airways, Aer Lingus, Finnair, Iberia, Malaysia Airlines, EL AL, British Airways fly direct, getting you to Philadelphia Intl. in just 2hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Philadelphia Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Philadelphia Intl. (PHL) 

The easiest way to view the best deals on flights from London to Philadelphia today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Philadelphia Intl. start at just £425 and range up to £456.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Philadelphia
  • booking your flight during February, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Philadelphia flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Philadelphia Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions