€254 Cheap Flights Philadelphia to London (PHL-LHR)

View €254 flight on Wed, 28 Jan 2026Opens in a new window

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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 15% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from Philadelphia to London (PHL-LHR)

Prices were available within the past 7 days and start at €254 for one-way flights and €484 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€484 Return, found 21 hours ago
€484
Return
found 21 hours ago
Select British Airways flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €484 found 21 hours ago
American Airlines
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€492 Return, found 21 hours ago
€492
Return
found 21 hours ago
Select American Airlines flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €492 found 21 hours ago
United
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€501 Return, found 21 hours ago
€501
Return
found 21 hours ago
Select United flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €501 found 21 hours ago
British Airways
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€509 Return, found 21 hours ago
€509
Return
found 21 hours ago
Select British Airways flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €509 found 21 hours ago
Iberia
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€509 Return, found 21 hours ago
€509
Return
found 21 hours ago
Select Iberia flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €509 found 21 hours ago
Virgin Atlantic
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€514 Return, found 21 hours ago
€514
Return
found 21 hours ago
Select Virgin Atlantic flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €514 found 21 hours ago
Delta
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€514 Return, found 21 hours ago
€514
Return
found 21 hours ago
Select Delta flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €514 found 21 hours ago
United
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€514 Return, found 21 hours ago
€514
Return
found 21 hours ago
Select United flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €514 found 21 hours ago
Air Canada
Sun, 11 Jan - Tue, 20 Jan
PHL
Philadelphia
LHR
London
€515 Return, found 21 hours ago
€515
Return
found 21 hours ago
Select Air Canada flight, departing Sun, 11 Jan from Philadelphia to London, returning Tue, 20 Jan, priced at €515 found 21 hours ago
JetBlue Airways
Wed, 28 Jan - Sun, 8 Feb
PHL
Philadelphia
LHR
London
€516 Return, found 12 hours ago
€516
Return
found 12 hours ago
Select JetBlue Airways flight, departing Wed, 28 Jan from Philadelphia to London, returning Sun, 8 Feb, priced at €516 found 12 hours ago

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

October is typically the cheapest month to fly

From €416 - €724 per traveller.
Philadelphia to London route 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, TAP Portugal, United, Virgin Atlantic
Return price
€483
Distance
5656 km
Average flight time
12 hours 2 mins

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 , 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 €254 and roundtrip prices from €484. 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 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 London.

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 €484. 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.

Explore a world of travel with Expedia

*Available to Expedia members.