€599 Cheap Flights London to Philadelphia (LHR-PHL)

View €599 flight on Wed, 20 Aug 2025Opens in a new window

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

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Cheap flights from London to Philadelphia (LHR-PHL)

Prices were available within the past 7 days and start at €599 for one-way flights and €559 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Sun, 24 Aug - Tue, 2 Sep
LHR
London
PHL
Philadelphia
€559 Return, found 1 day ago
€559
Return
found 1 day ago
Select JetBlue Airways flight, departing Sun, 24 Aug from London to Philadelphia, returning Tue, 2 Sep, priced at €559 found 1 day ago
Aer Lingus
Mon, 8 Sep - Mon, 15 Sep
LHR
London
PHL
Philadelphia
€598 Return, found 3 days ago
€598
Return
found 3 days ago
Select Aer Lingus flight, departing Mon, 8 Sep from London to Philadelphia, returning Mon, 15 Sep, priced at €598 found 3 days ago
Aer Lingus
Mon, 8 Sep - Mon, 15 Sep
LHR
London
PHL
Philadelphia
€604 Return, found 3 days ago
€604
Return
found 3 days ago
Select Aer Lingus flight, departing Mon, 8 Sep from London to Philadelphia, returning Mon, 15 Sep, priced at €604 found 3 days ago
Lufthansa
Mon, 8 Sep - Mon, 15 Sep
LHR
London
PHL
Philadelphia
€606 Return, found 3 days ago
€606
Return
found 3 days ago
Select Lufthansa flight, departing Mon, 8 Sep from London to Philadelphia, returning Mon, 15 Sep, priced at €606 found 3 days ago
Lufthansa
Mon, 8 Sep - Mon, 15 Sep
LHR
London
PHL
Philadelphia
€613 Return, found 3 days ago
€613
Return
found 3 days ago
Select Lufthansa flight, departing Mon, 8 Sep from London to Philadelphia, returning Mon, 15 Sep, priced at €613 found 3 days ago
Air Canada
Fri, 4 Jul - Fri, 11 Jul
LHR
London
PHL
Philadelphia
€619 Return, found 6 days ago
€619
Return
found 6 days ago
Select Air Canada flight, departing Fri, 4 Jul from London to Philadelphia, returning Fri, 11 Jul, priced at €619 found 6 days ago
Swiss International Air Lines
Mon, 8 Sep - Mon, 15 Sep
LHR
London
PHL
Philadelphia
€621 Return, found 3 days ago
€621
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, 8 Sep from London to Philadelphia, returning Mon, 15 Sep, priced at €621 found 3 days ago
United
Fri, 4 Jul - Fri, 11 Jul
LHR
London
PHL
Philadelphia
€621 Return, found 6 days ago
€621
Return
found 6 days ago
Select United flight, departing Fri, 4 Jul from London to Philadelphia, returning Fri, 11 Jul, priced at €621 found 6 days ago
British Airways
Wed, 16 Jul - Sun, 20 Jul
LHR
London
PHL
Philadelphia
€622 Return, found 6 hours ago
€622
Return
found 6 hours ago
Select British Airways flight, departing Wed, 16 Jul from London to Philadelphia, returning Sun, 20 Jul, priced at €622 found 6 hours ago
American Airlines
Wed, 16 Jul - Sun, 20 Jul
LHR
London
PHL
Philadelphia
€631 Return, found 6 hours ago
€631
Return
found 6 hours ago
Select American Airlines flight, departing Wed, 16 Jul from London to Philadelphia, returning Sun, 20 Jul, priced at €631 found 6 hours ago

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

February is typically the cheapest month to fly

From €411 - €848 per traveller.

Graph displaying average flight prices per month

London to Philadelphia route information
Origin airport
Heathrow
Destination airport
Philadelphia Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, United, Virgin Atlantic
Return price
€558
Distance
5656 km
Average flight time
2 hours 55 mins

Perfect flights from London to Philadelphia

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Philadelphia. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of Philadelphia, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to Philadelphia Intl. ticket options cater to your travel preferences, with incredible one-way fares from €599 and roundtrip prices from €559. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Philadelphia Intl. and explore Philadelphia and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your LHR to PHL travel arrangements today and embark on the journey of a lifetime in Philadelphia.

Frequently asked questions

How much is a flight from London Heathrow to Philadelphia Intl. Airport (PHL)?
Based on fares advertised within the last 7 days on Expedia for flights departing within the next year, round-trip flights from LHR to Philadelphia Intl. Airport (PHL) start from €559. Book now to score the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport to Philadelphia Intl. Airport (PHL)?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Heathrow Airport to Philadelphia Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Heathrow Airport to Philadelphia Intl. Airport (PHL) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport (LHR) to PHL?
With around 5,700 kilometres separating LHR and Philadelphia Airport, your flight will be a long one. Pack wisely and make your time on board comfortable. Little things like an extra pair of socks and a good travel pillow can make a huge difference.
Which airlines fly direct from Heathrow Airport to Philadelphia Airport?
There are several airlines that fly straight from London Heathrow to Philadelphia Intl. Airport (PHL). British Airways (BA) is a top choice, offering 30 flights every month. Another carrier operating on this route is American Airlines (AA). You'll have 26 flights a month to take your pick of.
Are Heathrow Airport (LHR) to PHL flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes pick up a bargain, with some super cheap airfares from Heathrow Airport to Philadelphia Intl. Airport (PHL) appearing a few weeks before the departure date. If you'd rather book ahead, Expedia compares and updates all the best flight deals regularly --- as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines issue prices that far in advance.

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