Popular airlines from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)

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Cheap Flights from Philadelphia to London (PHL-LHR)

Prices were available within the past 7 days and start at $299 for one-way flights and $518 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Fri, Apr 24 - Thu, Apr 30
PHL
Philadelphia
LHR
London
$518 Roundtrip, found 19 hours ago
$518
Roundtrip
found 19 hours ago
Select JetBlue Airways flight, departing Fri, Apr 24 from Philadelphia to London, returning Thu, Apr 30, priced at $518 found 19 hours ago
JetBlue Airways
Sat, Mar 28 - Mon, Apr 6
PHL
Philadelphia
LHR
London
$533 Roundtrip, found 14 hours ago
$533
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Sat, Mar 28 from Philadelphia to London, returning Mon, Apr 6, priced at $533 found 14 hours ago
JetBlue Airways
Sat, Mar 28 - Mon, Apr 6
PHL
Philadelphia
LHR
London
$553 Roundtrip, found 14 hours ago
$553
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Sat, Mar 28 from Philadelphia to London, returning Mon, Apr 6, priced at $553 found 14 hours ago
American Airlines
Tue, Aug 11 - Fri, Aug 21
PHL
Philadelphia
LHR
London
$591 Roundtrip, found 2 days ago
$591
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Aug 11 from Philadelphia to London, returning Fri, Aug 21, priced at $591 found 2 days ago
Iberia
Tue, Aug 11 - Fri, Aug 21
PHL
Philadelphia
LHR
London
$611 Roundtrip, found 2 days ago
$611
Roundtrip
found 2 days ago
Select Iberia flight, departing Tue, Aug 11 from Philadelphia to London, returning Fri, Aug 21, priced at $611 found 2 days ago
Lufthansa
Wed, Aug 26 - Wed, Sep 2
PHL
Philadelphia
LHR
London
$613 Roundtrip, found 3 days ago
$613
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, Aug 26 from Philadelphia to London, returning Wed, Sep 2, priced at $613 found 3 days ago
British Airways
Tue, Aug 11 - Fri, Aug 21
PHL
Philadelphia
LHR
London
$615 Roundtrip, found 2 days ago
$615
Roundtrip
found 2 days ago
Select British Airways flight, departing Tue, Aug 11 from Philadelphia to London, returning Fri, Aug 21, priced at $615 found 2 days ago
Air Canada
Tue, Aug 11 - Fri, Aug 21
PHL
Philadelphia
LHR
London
$617 Roundtrip, found 2 days ago
$617
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Aug 11 from Philadelphia to London, returning Fri, Aug 21, priced at $617 found 2 days ago
Aer Lingus
Wed, Mar 4 - Wed, Mar 25
PHL
Philadelphia
LHR
London
$706 Roundtrip, found 3 days ago
$706
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Wed, Mar 4 from Philadelphia to London, returning Wed, Mar 25, priced at $706 found 3 days ago
United
Wed, Feb 18 - Tue, Feb 24
PHL
Philadelphia
LHR
London
$716 Roundtrip, just found
$716
Roundtrip
just found
Select United flight, departing Wed, Feb 18 from Philadelphia to London, returning Tue, Feb 24, priced at $716 just found

Find the cheapest month to fly from Philadelphia (PHL) to London (LHR)

October is typically the cheapest month to fly

From $477 - $830 per traveler.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gatwick LGW. Average driving time to city center is 52 minutes. Flights from $1,670
LGW
Gatwick
Average driving time to city center52 min
Flights from $1,670
Select flight to London City LCY. Closest option available. Average driving time to city center is 21 minutes. Flights from $1,508
LCY
London City
Closest
Average driving time to city center21 min
Flights from $1,508
Flights from Philadelphia (PHL) to London (LHR)
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
$518
Distance
3535 mi
Average flight time
12 hours 2 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 April. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $299 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.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) cost?
Grab a cheap one-way flight from $299 or cheap return flight from $518 from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
Planning your getaway for April is a good way to save, as it's the cheapest month for flights between PHL and LHR. You'll often find the lowest prices during the off-season.
Which airlines fly direct from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
Hop on a nonstop flight with American Airlines and go straight from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR).
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
The cheapest airline to offer flights between Philadelphia Intl. Airport (PHL) and Heathrow Airport (LHR) will vary based on your travel plans. American Airlines and British Airways are just some well-known options offering well-priced fares. Use Expedia's search tool to compare airlines in one place and find the right PHL to LHR flight for your budget.
How many flights per day from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
With, on average, 2 nonstop flights departing from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) each day, you'll be jetting off in no time.
What are the most popular departure times for flights from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
The 6 PM departures from PHL to LHR are the top choice for many travelers. These flights can come with a higher price due to their popularity. If you're hoping to save money, pick a less crowded time to fly.
What day of the week has the most flights from PHL to LHR?
If you depart on a Friday, you'll get the greatest range of options for flights from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR).
What is the earliest flight from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
The first flight of the day departing from Philadelphia Intl. Airport (PHL) is at around 6:40PM UTC-5. Catch this flight and you'll land at Heathrow Airport (LHR) at approximately 6:35AM UTC+0. The total time in the air is 6h 55m.
How long does it take to fly from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
Flights from PHL to LHR have an average travel time of 6 hours and 57 minutes. The total distance between these two airports is 3,500 mi.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
Choose a flight from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for London from Philadelphia Intl. Airport (PHL)?
Compare your flight options from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR). This is the only London airport you can jet into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) last-minute?
Holding off until just before your trip to book a flight from PHL to LHR often results in higher prices. While it's possible to find some last-minute deals, they aren't always guaranteed. Keep your travel schedule open for the best chance of snagging a bargain.
Is it cheaper to book a PHL to LHR flight and hotel package?
You'll typically save money by booking a PHL to LHR flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've chosen your ideal accommodations and flights, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)?
Typically, you can cancel or modify your PHL to LHR flight. However, there may be additional charges, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want further details, visit our Customer Service portal.

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