Popular airlines from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)
British AirwaysBritish Airways
IberiaIberia
FinnairFinnair
Air CanadaAir Canada
Aer LingusAer Lingus
Virgin AtlanticVirgin Atlantic
JetBlue AirwaysJetBlue Airways
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Today's featured flight deals from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)
- Philadelphia (PHL) to London (LHR).American Airlines, nonstop.Departing on Mon, Aug 11 at 7:50pm from Philadelphia, arriving on Tue, Aug 12 at 8:05am in London.Returning on Sun, Aug 17 at 8:45am from London, arriving at 4:35pm in Philadelphia.Select American Airlines flight departing on Mon, Aug 11 at 7:50pm from Philadelphia, returning on Sun, Aug 17 at 8:45am from London priced at $55655% less than typical$556
- Philadelphia (PHL) to London (LHR).British Airways, nonstop.Departing on Fri, Aug 15 at 6:35pm from Philadelphia, arriving on Sat, Aug 16 at 6:40am in London.Returning on Fri, Aug 22 at 6:15am from London, arriving at 2:05pm in Philadelphia.Select British Airways flight departing on Fri, Aug 15 at 6:35pm from Philadelphia, returning on Fri, Aug 22 at 6:15am from London priced at $55355% less than typical$553
- Philadelphia (PHL) to London (LHR).British Airways, nonstop.Departing on Fri, Aug 15 at 6:35pm from Philadelphia, arriving on Sat, Aug 16 at 6:40am in London.Returning on Fri, Aug 22 at 7:00am from London, arriving at 2:05pm in Philadelphia.Select British Airways flight departing on Fri, Aug 15 at 6:35pm from Philadelphia, returning on Fri, Aug 22 at 7:00am from London priced at $55355% less than typical$553
- Philadelphia (PHL) to London (LHR).British Airways, nonstop.Departing on Wed, Aug 20 at 6:35pm from Philadelphia, arriving on Thu, Aug 21 at 6:40am in London.Returning on Mon, Aug 25 at 7:30pm from London, arriving on Tue, Aug 26 at 12:10pm in Philadelphia.Select British Airways flight departing on Wed, Aug 20 at 6:35pm from Philadelphia, returning on Mon, Aug 25 at 7:30pm from London priced at $50855% less than typical$508
- Philadelphia (PHL) to London (LHR).British Airways, nonstop.Departing on Thu, Aug 14 at 6:35pm from Philadelphia, arriving on Fri, Aug 15 at 6:40am in London.Returning on Tue, Aug 19 at 6:55am from London, arriving at 2:05pm in Philadelphia.Select British Airways flight departing on Thu, Aug 14 at 6:35pm from Philadelphia, returning on Tue, Aug 19 at 6:55am from London priced at $55350% less than typical$553
- Philadelphia (PHL) to London (LHR).American Airlines, nonstop.Departing on Mon, Aug 18 at 7:50pm from Philadelphia, arriving on Tue, Aug 19 at 8:05am in London.Returning on Mon, Aug 25 at 8:35pm from London, arriving on Tue, Aug 26 at 2:05pm in Philadelphia.Select American Airlines flight departing on Mon, Aug 18 at 7:50pm from Philadelphia, returning on Mon, Aug 25 at 8:35pm from London priced at $50255% less than typical$502
- Philadelphia (PHL) to London (LHR).British Airways, nonstop.Departing on Wed, Aug 20 at 6:35pm from Philadelphia, arriving on Thu, Aug 21 at 6:40am in London.Returning on Sun, Aug 31 at 7:50am from London, arriving at 2:05pm in Philadelphia.Select British Airways flight departing on Wed, Aug 20 at 6:35pm from Philadelphia, returning on Sun, Aug 31 at 7:50am from London priced at $55250% less than typical$552
- Philadelphia (PHL) to London (LHR).British Airways, nonstop.Departing on Thu, Aug 28 at 6:35pm from Philadelphia, arriving on Fri, Aug 29 at 6:40am in London.Returning on Mon, Sep 1 at 8:35pm from London, arriving on Tue, Sep 2 at 2:05pm in Philadelphia.Select British Airways flight departing on Thu, Aug 28 at 6:35pm from Philadelphia, returning on Mon, Sep 1 at 8:35pm from London priced at $65245% less than typical$652
- Philadelphia (PHL) to London (LHR).American Airlines, nonstop.Departing on Tue, Aug 19 at 10:15pm from Philadelphia, arriving on Wed, Aug 20 at 10:20am in London.Returning on Tue, Aug 26 at 7:45am from London, arriving at 3:50pm in Philadelphia.Select American Airlines flight departing on Tue, Aug 19 at 10:15pm from Philadelphia, returning on Tue, Aug 26 at 7:45am from London priced at $49450% less than typical$494
Cheap Flights from Philadelphia to London (PHL-LHR)
Prices were available within the past 7 days and start at $275 for one-way flights and $433 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Find the cheapest month to fly from Philadelphia (PHL) to London (LHR)
November is typically the cheapest month to fly
Graph displaying average flight prices per month
Alternative airports near London
Prices were available within the past 7 days. Prices and availability are subject to change.
Origin airport | Philadelphia Intl. |
Destination airport | Heathrow |
Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic |
Roundtrip price | $432 |
Distance | 3535 mi |
Average flight time | 12 hours 6 mins |
Philadelphia to London Flights
The cheapest times to fly from Philadelphia to London
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to London are during the month of August. You can find some of the cheapest flights from Philadelphia to London with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Philadelphia to London
Sunday is one of the best days to book for cheap flights from Philadelphia to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Philadelphia to London
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $275 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
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