฿34,785 Cheap Flights from London (LHR) to Philadelphia (PHL)

View ฿34,785 flight on Sun, 7 Sept 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Philadelphia International Airport (PHL)

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

Prices were available within the past 7 days and start at ฿34,785 for one-way flights and ฿20,845 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿20,845 Return, found 3 days ago
฿20,845
Return
found 3 days ago
Select American Airlines flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿20,845 found 3 days ago
American Airlines
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿20,900 Return, found 3 days ago
฿20,900
Return
found 3 days ago
Select American Airlines flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿20,900 found 3 days ago
American Airlines
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,025 Return, found 3 days ago
฿21,025
Return
found 3 days ago
Select American Airlines flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,025 found 3 days ago
American Airlines
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,030 Return, found 3 days ago
฿21,030
Return
found 3 days ago
Select American Airlines flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,030 found 3 days ago
Delta
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,085 Return, found 3 days ago
฿21,085
Return
found 3 days ago
Select Delta flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,085 found 3 days ago
American Airlines
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,140 Return, found 3 days ago
฿21,140
Return
found 3 days ago
Select American Airlines flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,140 found 3 days ago
American Airlines
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,210 Return, found 3 days ago
฿21,210
Return
found 3 days ago
Select American Airlines flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,210 found 3 days ago
Finnair
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,235 Return, found 3 days ago
฿21,235
Return
found 3 days ago
Select Finnair flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,235 found 3 days ago
Iberia
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,415 Return, found 3 days ago
฿21,415
Return
found 3 days ago
Select Iberia flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,415 found 3 days ago
Air France
Wed, 1 Oct - Wed, 15 Oct
LHR
London
PHL
Philadelphia
฿21,575 Return, found 3 days ago
฿21,575
Return
found 3 days ago
Select Air France flight, departing Wed, 1 Oct from London to Philadelphia, returning Wed, 15 Oct, priced at ฿21,575 found 3 days ago

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

February is typically the cheapest month to fly

From ฿15,446 - ฿31,094 per traveller.
Flight from London to Philadelphia route information
Origin airport
Heathrow
Destination airport
Philadelphia Intl.
Return price
฿20,845
Distance
5656 km
Average flight time
2 hours 58 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 , 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 ฿34,785 and roundtrip prices from ฿20,845. 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 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 to 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 ฿20,845. 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.

Explore a world of travel with Expedia

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