€253 Cheap Flights Philadelphia to London (PHL-LHR)

View €253 flight on Sat, 31 Jan 2026Opens in a new window

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 €253 for one-way flights and €527 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 29 Oct - Wed, 5 Nov
PHL
Philadelphia
LHR
London
€527 Return, found 11 hours ago
€527
Return
found 11 hours ago
Select American Airlines flight, departing Wed, 29 Oct from Philadelphia to London, returning Wed, 5 Nov, priced at €527 found 11 hours ago
American Airlines
Wed, 29 Oct - Wed, 5 Nov
PHL
Philadelphia
LHR
London
€529 Return, found 11 hours ago
€529
Return
found 11 hours ago
Select American Airlines flight, departing Wed, 29 Oct from Philadelphia to London, returning Wed, 5 Nov, priced at €529 found 11 hours ago
American Airlines
Sun, 9 Nov - Tue, 18 Nov
PHL
Philadelphia
LHR
London
€531 Return, found 13 hours ago
€531
Return
found 13 hours ago
Select American Airlines flight, departing Sun, 9 Nov from Philadelphia to London, returning Tue, 18 Nov, priced at €531 found 13 hours ago
United
Wed, 29 Oct - Thu, 6 Nov
PHL
Philadelphia
LHR
London
€531 Return, found 11 hours ago
€531
Return
found 11 hours ago
Select United flight, departing Wed, 29 Oct from Philadelphia to London, returning Thu, 6 Nov, priced at €531 found 11 hours ago
American Airlines
Wed, 29 Oct - Mon, 10 Nov
PHL
Philadelphia
LHR
London
€535 Return, found 11 hours ago
€535
Return
found 11 hours ago
Select American Airlines flight, departing Wed, 29 Oct from Philadelphia to London, returning Mon, 10 Nov, priced at €535 found 11 hours ago
Aer Lingus
Sun, 9 Nov - Tue, 18 Nov
PHL
Philadelphia
LHR
London
€535 Return, found 13 hours ago
€535
Return
found 13 hours ago
Select Aer Lingus flight, departing Sun, 9 Nov from Philadelphia to London, returning Tue, 18 Nov, priced at €535 found 13 hours ago
Air Canada
Sun, 9 Nov - Tue, 18 Nov
PHL
Philadelphia
LHR
London
€536 Return, found 13 hours ago
€536
Return
found 13 hours ago
Select Air Canada flight, departing Sun, 9 Nov from Philadelphia to London, returning Tue, 18 Nov, priced at €536 found 13 hours ago
American Airlines
Sun, 9 Nov - Tue, 18 Nov
PHL
Philadelphia
LHR
London
€538 Return, found 13 hours ago
€538
Return
found 13 hours ago
Select American Airlines flight, departing Sun, 9 Nov from Philadelphia to London, returning Tue, 18 Nov, priced at €538 found 13 hours ago
American Airlines
Wed, 29 Oct - Thu, 6 Nov
PHL
Philadelphia
LHR
London
€541 Return, found 11 hours ago
€541
Return
found 11 hours ago
Select American Airlines flight, departing Wed, 29 Oct from Philadelphia to London, returning Thu, 6 Nov, priced at €541 found 11 hours ago
British Airways
Wed, 29 Oct - Wed, 5 Nov
PHL
Philadelphia
LHR
London
€542 Return, found 11 hours ago
€542
Return
found 11 hours ago
Select British Airways flight, departing Wed, 29 Oct from Philadelphia to London, returning Wed, 5 Nov, priced at €542 found 11 hours ago

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

November is typically the cheapest month to fly

From €407 - €791 per traveller.

Alternative airports near London

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

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 28 minutes. Flights from €527
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from €527

Frequently asked questions

How much is a flight from PHL to London Heathrow?
The lowest price advertised for a round-trip journey from Philadelphia Intl. Airport (PHL) to LHR is €527. But you better move fast. This price is taken from fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Philadelphia Intl. Airport (PHL) to Heathrow Airport?
Most flights can be cancelled online, but each air carrier has its own set of terms and conditions. If you do decide to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) 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 Philadelphia Airport to LHR flights, you'll see a "no change fees" filter for you to select.
How far is the flight from PHL to LHR?
With a flight distance of 5,700 kilometres between Philadelphia and Hounslow, this is a long-haul journey. Be sure to stay hydrated and take a short walk down the aisle from time to time.
Which airlines fly direct from Philadelphia Airport to Heathrow Airport?
A leading airline that operates on the route from PHL to London Heathrow is British Airways (BA). It offers 30 flights every month. Another airline operating on this route is American Airlines (AA). You'll have 26 flights a month to select from.
Are Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) at the last minute could be your ticket to a great deal. However, it might cost you a whole lot more! If you'd rather avoid the risk, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Heathrow
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
€527
Distance
5656 km
Average flight time
12 hours 6 mins

Book with confidence

Perfect flights from Philadelphia to London

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Philadelphia to London. 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 London, 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 Philadelphia Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from €253 and roundtrip prices from €527. 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 Heathrow and explore London 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 PHL to LHR travel arrangements today and embark on the journey of a lifetime in London.
Perfect flights from Philadelphia to London

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