$299 Cheap Flights from Philadelphia (PHL) to London (LGW)

View $299 flight on Mon, Sep 21, 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW)

Cheap Flights from Philadelphia to London (PHL-LGW)

Prices were available within the past 7 days and start at $299 for one-way flights and $612 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Nov 11 - Tue, Nov 18
PHL
Philadelphia
LGW
London
$612 Roundtrip, found 13 hours ago
$612
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Tue, Nov 11 from Philadelphia to London, returning Tue, Nov 18, priced at $612 found 13 hours ago
American Airlines
Mon, Dec 1 - Wed, Dec 10
PHL
Philadelphia
LGW
London
$613 Roundtrip, found 17 hours ago
$613
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Mon, Dec 1 from Philadelphia to London, returning Wed, Dec 10, priced at $613 found 17 hours ago
American Airlines
Tue, Nov 11 - Tue, Nov 18
PHL
Philadelphia
LGW
London
$617 Roundtrip, found 13 hours ago
$617
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Tue, Nov 11 from Philadelphia to London, returning Tue, Nov 18, priced at $617 found 13 hours ago
British Airways
Mon, Dec 1 - Wed, Dec 10
PHL
Philadelphia
LGW
London
$618 Roundtrip, found 17 hours ago
$618
Roundtrip
found 17 hours ago
Select British Airways flight, departing Mon, Dec 1 from Philadelphia to London, returning Wed, Dec 10, priced at $618 found 17 hours ago
American Airlines
Tue, Nov 11 - Tue, Nov 18
PHL
Philadelphia
LGW
London
$622 Roundtrip, found 13 hours ago
$622
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Tue, Nov 11 from Philadelphia to London, returning Tue, Nov 18, priced at $622 found 13 hours ago
Air Canada
Tue, Nov 18 - Wed, Nov 26
PHL
Philadelphia
LGW
London
$624 Roundtrip, found 3 days ago
$624
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Nov 18 from Philadelphia to London, returning Wed, Nov 26, priced at $624 found 3 days ago
United
Tue, Nov 18 - Wed, Nov 26
PHL
Philadelphia
LGW
London
$626 Roundtrip, found 3 days ago
$626
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 18 from Philadelphia to London, returning Wed, Nov 26, priced at $626 found 3 days ago
American Airlines
Tue, Nov 11 - Tue, Nov 18
PHL
Philadelphia
LGW
London
$628 Roundtrip, found 13 hours ago
$628
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Tue, Nov 11 from Philadelphia to London, returning Tue, Nov 18, priced at $628 found 13 hours ago
Air Canada
Wed, Feb 25 - Mon, Mar 2
PHL
Philadelphia
LGW
London
$632 Roundtrip, found 3 days ago
$632
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Feb 25 from Philadelphia to London, returning Mon, Mar 2, priced at $632 found 3 days ago
Swiss International Air Lines
Wed, Feb 25 - Mon, Mar 2
PHL
Philadelphia
LGW
London
$634 Roundtrip, found 3 days ago
$634
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Wed, Feb 25 from Philadelphia to London, returning Mon, Mar 2, priced at $634 found 3 days ago

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

September is typically the cheapest month to fly

From $487 - $808 per traveler.

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 center is 28 minutes. Flights from $612
LHR
Heathrow
Cheapest
Average driving time to city center28 min
Flights from $612
Select flight to London City LCY. Closest option available. Average driving time to city center is 21 minutes. Flights from $720
LCY
London City
Closest
Average driving time to city center21 min
Flights from $720

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW) cost?
Lock in a cheap one-way flight from $299 or cheap return flight from $612 from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW)?
Traveling in November can help you save, as it's the cheapest month for flights between PHL and LGW. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from PHL to LGW. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW)?
Nonstop flights from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PHL to LGW?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW)?
To arrive at Gatwick Airport (LGW) without delays, opt for a flight that leaves Philadelphia Intl. Airport (PHL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for London from Philadelphia Intl. Airport (PHL)?
Heathrow Airport (LHR) is the only airport in London with direct flights from Philadelphia Intl. Airport (PHL). Explore the options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW) last-minute?
Waiting until just before your trip to book your flight from PHL to LGW often results in higher prices. Although you may find some last-minute discounts, they aren't always guaranteed. Keep your travel schedule open for a better chance of getting a bargain.
Is it cheaper to book a PHL to LGW flight and hotel package?
Compared with arranging flights and hotels separately, booking a PHL to LGW flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the hassle out of planning your trip. Simply pick your flights and select from our wide range of stays, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Gatwick Airport (LGW)?
If you booked your PHL to LGW flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Gatwick
Airlines serving
American Airlines, British Airways, Iberia, Icelandair, JetBlue Airways, Swiss International Air Lines, TAP Portugal
Roundtrip price
$611
Distance
3554 mi

Book with confidence

Philadelphia to London Flights

The cheapest times to fly from Philadelphia to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to London are during the month of November. You can find some of the cheapest flights from Philadelphia to London with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to London

Sunday is one of the best days to book for cheap flights from Philadelphia to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $299 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Philadelphia to London Flights

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*Available to One Key members.