£368 Cheap Flights from London (LHR) to Philadelphia (PHL)

View £368 flight on Mon, 1 Jun 2026Opens 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 £368 for one-way flights and £544 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed, 13 May - Wed, 18 Nov
LHR
London
PHL
Philadelphia
£544 Return, found 17 hours ago
£544
Return
found 17 hours ago
Select JetBlue Airways flight, departing Wed, 13 May from London to Philadelphia, returning Wed, 18 Nov, priced at £544 found 17 hours ago
JetBlue Airways
Wed, 13 May - Fri, 22 May
LHR
London
PHL
Philadelphia
£553 Return, found 3 days ago
£553
Return
found 3 days ago
Select JetBlue Airways flight, departing Wed, 13 May from London to Philadelphia, returning Fri, 22 May, priced at £553 found 3 days ago
American Airlines
Mon, 23 Nov - Sun, 29 Nov
LHR
London
PHL
Philadelphia
£579 Return, found 1 day ago
£579
Return
found 1 day ago
Select American Airlines flight, departing Mon, 23 Nov from London to Philadelphia, returning Sun, 29 Nov, priced at £579 found 1 day ago
Air Canada
Tue, 3 Nov - Mon, 9 Nov
LHR
London
PHL
Philadelphia
£594 Return, found 4 days ago
£594
Return
found 4 days ago
Select Air Canada flight, departing Tue, 3 Nov from London to Philadelphia, returning Mon, 9 Nov, priced at £594 found 4 days ago
British Airways
Wed, 11 Nov - Mon, 16 Nov
LHR
London
PHL
Philadelphia
£611 Return, found 1 day ago
£611
Return
found 1 day ago
Select British Airways flight, departing Wed, 11 Nov from London to Philadelphia, returning Mon, 16 Nov, priced at £611 found 1 day ago
Aer Lingus
Wed, 11 Nov - Mon, 16 Nov
LHR
London
PHL
Philadelphia
£613 Return, found 1 day ago
£613
Return
found 1 day ago
Select Aer Lingus flight, departing Wed, 11 Nov from London to Philadelphia, returning Mon, 16 Nov, priced at £613 found 1 day ago
TAP Portugal
Wed, 30 Sept - Sat, 17 Oct
LHR
London
PHL
Philadelphia
£627 Return, found 1 hour ago
£627
Return
found 1 hour ago
Select TAP Portugal flight, departing Wed, 30 Sept from London to Philadelphia, returning Sat, 17 Oct, priced at £627 found 1 hour ago
Lufthansa
Mon, 7 Sept - Thu, 17 Sept
LHR
London
PHL
Philadelphia
£629 Return, found 1 day ago
£629
Return
found 1 day ago
Select Lufthansa flight, departing Mon, 7 Sept from London to Philadelphia, returning Thu, 17 Sept, priced at £629 found 1 day ago
Brussels Airlines
Wed, 17 Feb - Tue, 2 Mar
LHR
London
PHL
Philadelphia
£635 Return, found 6 days ago
£635
Return
found 6 days ago
Select Brussels Airlines flight, departing Wed, 17 Feb from London to Philadelphia, returning Tue, 2 Mar, priced at £635 found 6 days ago
United
Mon, 7 Sept - Tue, 15 Sept
LHR
London
PHL
Philadelphia
£642 Return, found 1 day ago
£642
Return
found 1 day ago
Select United flight, departing Mon, 7 Sept from London to Philadelphia, returning Tue, 15 Sept, priced at £642 found 1 day ago

Alternative airports near Philadelphia

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

Select flight to Philadelphia Intl. PHL. Cheapest and Closest option available. Average driving time to city centre is 17 minutes. Flights from £794
PHL
Philadelphia Intl.
CheapestClosest
Average driving time to city centre17 min
Flights from £794

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 £544. 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.

Frequently asked questions

Which airlines fly direct from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Enter LHR to PHL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
To find a cheap flight from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The best airline to fly with from London Heathrow (LHR) to Philadelphia, PA (PHL) will differ from traveller to traveller. If you like to fly early, AA offers early morning flights. If price is the most important factor, AA typically offers the lowest fares. BA offers the most daily flights from London Heathrow (LHR) to Philadelphia, PA (PHL), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
There are approximately 3 nonstop flights per day from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.). For even more choice, look at flights that include layovers, as there are around 154 connecting flights per day. Some common connection points include Unknown (DUB), O'Hare Intl. (ORD), and John F. Kennedy Intl. (JFK).
What is the earliest flight from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The earliest flight from London Heathrow (LHR) to Philadelphia International Airport (PHL) typically departs at approximately 6:00 AM local time. This service is operated by British Airways and American Airlines. Please note that this is a seasonal service, active in March, November, and December. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
You'll typically find the most flights from London Heathrow (LHR) to Philadelphia, PA (PHL) on a Friday, with around 79 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include British Airways, American Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week, with only a slight variation in the number of flights.
What are the most popular departure times for flights from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The most popular departure times for flights from London Heathrow (LHR) to Philadelphia, PA (PHL) are in the early afternoon, from 12pm to 3pm. About 36% of passengers prefer this time. Many major carriers, including British Airways and American Airlines, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll arrive in Philadelphia in the evening, ready to settle in.
How long does it take to fly from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Direct flights from LHR to PHL usually take about 8 hours, traveling roughly 3,536 miles. If you opt for a connecting flight, expect to add around 5 hours 20 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Select the "Business class" and "First class" filters when looking for LHR to PHL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Philadelphia from Heathrow (LHR)?
From Heathrow (LHR), you can fly directly into Philadelphia Intl. (PHL) to reach Philadelphia. Some flights may connect through major hubs like ZRH (ZRH), Brussels - National (BRU), Roissy-Charles de Gaulle (CDG) before reaching Philadelphia. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.) flight and hotel package?
Securing a London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.)?
If you booked your London (LHR-Heathrow) to Philadelphia, PA (PHL-Philadelphia Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
Philadelphia Intl.
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
Return price
£544
Distance
5656 km
Average flight time
2 hours 55 mins

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