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Cheap flights from London Gatwick Airport to Philadelphia from £417

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/9. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — PHL
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Philadelphia

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to Philadelphia
Explore the most affordable flight options available from Gatwick to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 July 2026.

Mon 24/812:20
LGW
-
PHL
1 stop12h 41m
JetBlue
Wed 2/909:12
PHL
-
LGW
1 stop19h 23m
JetBlue
Deal found 20/7£624
Thu 8/1013:05
LGW
-
PHL
2 stops23h 31m
Multiple Airlines
Wed 14/1015:25
PHL
-
LGW
1 stop13h 35m
Multiple Airlines
Deal found 21/7£627
Sat 17/1014:00
LGW
-
PHL
1 stop15h 20m
Multiple Airlines
Sat 24/1007:10
PHL
-
LGW
2 stops21h 50m
Multiple Airlines
Deal found 25/7£628
Tue 8/918:35
LGW
-
PHL
2 stops28h 19m
SWISS
Tue 15/917:40
PHL
-
LGW
2 stops19h 10m
SWISS
Deal found 25/7£629
Tue 25/814:00
LGW
-
PHL
1 stop24h 35m
Multiple Airlines
Wed 2/913:00
PHL
-
LGW
1 stop16h 00m
Multiple Airlines
Deal found 24/7£630
Tue 22/906:10
LGW
-
PHL
2 stops17h 45m
Multiple Airlines
Sat 26/915:25
PHL
-
LGW
1 stop13h 35m
Multiple Airlines
Deal found 21/7£631
Mon 14/918:35
LGW
-
PHL
2 stops28h 19m
Multiple Airlines
Mon 28/910:05
PHL
-
LGW
2 stops17h 20m
Multiple Airlines
Deal found 20/7£633
Wed 2/915:40
LGW
-
PHL
2 stops21h 42m
Icelandair
Tue 15/910:45
PHL
-
LGW
2 stops22h 55m
Icelandair
Deal found 24/7£633
Wed 7/1015:40
LGW
-
PHL
2 stops23h 10m
Icelandair
Wed 21/1019:19
PHL
-
LGW
2 stops14h 21m
Icelandair
Deal found 22/7£634
Tue 25/814:00
LGW
-
PHL
1 stop24h 35m
Multiple Airlines
Sat 5/913:00
PHL
-
LGW
1 stop16h 00m
Multiple Airlines
Deal found 24/7£636

Find flight deals from Gatwick to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 July 2026.

Round-trip from

£624

One-way from

£417

Popular in

July

Cheapest in

September

Average price

£794
16/10-25/10
  • 16/10-25/10
  • 2 total stops
  • 37h 00m total
  • London to Philadelphia
Search Deals
20/9
  • 20/9
  • 3 total stops
  • 38h 51m total
  • London to Philadelphia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£77 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 July 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Thu 12/11

16:00-22:36

2 stops35h 36m

Philadelphia

Sun 15/11

18:30-20:35

2 stops21h 05m

£653

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Tue 8/9

15:40-22:32

2 stops35h 52m

Philadelphia

Tue 15/9

15:25-14:40

2 stops18h 15m

£675

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 30/9

10:35-09:50

2 stops28h 15m

Philadelphia

Wed 28/10

15:30-09:50

2 stops14h 20m

£679

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 21/9

12:05-09:50

2 stops26h 45m

Philadelphia

Thu 1/10

10:45-20:25

3 stops28h 40m

£692

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Fri 23/10

10:35-09:50

2 stops28h 15m

Philadelphia

Sat 31/10

15:30-09:50

2 stops14h 20m

£701
Fastest return journey

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Thu 10/9

13:00-22:32

2 stops14h 32m

Philadelphia

Thu 24/9

15:57-14:40

2 stops17h 43m

£725

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 5/10

12:05-09:50

2 stops26h 45m

Philadelphia

Sun 11/10

20:15-09:45

3 stops32h 30m

£733

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 30/9

10:35-09:50

3 stops28h 15m

Philadelphia

Wed 28/10

15:30-10:00

3 stops38h 30m

£737

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Fri 4/9

21:15-20:00

3 stops27h 45m

Philadelphia

Mon 14/9

10:45-20:25

3 stops28h 40m

£779
Cheapest one-way

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 18/11

10:00-20:07

2 stops15h 07m

£440

Flights are sorted by cheapest return flights first.

Deals found on 21/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Gatwick to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Gatwick with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Philadelphia

What’s the top stopover airport for flights from London Gatwick Airport to Philadelphia?

Share of one-stop return flights from London Gatwick Airport to Philadelphia chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Boston (BOS) – chosen by Cheapflights users on 75% of one-stop itineraries from London Gatwick Airport to Philadelphia on Cheapflights.

What’s the cheapest stopover airport for flights from London Gatwick Airport to Philadelphia?

Average return fare for one-stop flights from London Gatwick Airport to Philadelphia, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Barcelona (BCN) is the most affordable one-stop option, with an average return flight price of £478.

What’s the fastest stopover option from London Gatwick Airport to Philadelphia?

Shortest average travel time for one-stop one-way flights from London Gatwick Airport to Philadelphia, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Barcelona (BCN) have the shortest average one-way travel time for one-stop routes: 13h 45m.

Which airport typically offers the quickest stopover for flights from London Gatwick Airport to Philadelphia?

Average stopover duration for one-stop one-way flights from London Gatwick Airport to Philadelphia, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Barcelona (BCN) offer the fastest connection on this route, with an average stopover time of 2h 23m.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from London Gatwick?

    Philadelphia (PHL) is the airport you will fly into if you book a flight from London Gatwick to Philadelphia. You should not have trouble finding flights to Philadelphia from London Gatwick; the airport handles an average of 0 inbound flights from London Gatwick per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Philadelphia airport from London Gatwick. It is only a 7.0 mi journey from Philadelphia (PHL) to Philadelphia’s city center.

  • How long is the flight from London Gatwick Airport to Philadelphia?

    For as low as £653, TAP AIR PORTUGAL can have you in Philadelphia from London Gatwick Airport in 35h 36m. The distance from London Gatwick Airport to Philadelphia is about 3551 mi.

  • Can I find deals for flights from Gatwick to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Gatwick to Philadelphia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Gatwick to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Philadelphia.

  • Can I find deals for business class flights from Gatwick to Philadelphia?

    Yes. Cheapflights offers flight deals from Gatwick to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Why should you use Cheapflights to find cheap flight tickets from Gatwick to Philadelphia?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Philadelphia from Gatwick.

Can Cheapflights find flights from Gatwick to Philadelphia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Gatwick to Philadelphia flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Gatwick to Philadelphia become cheaper?

Yes, Cheapflights offers price alerts on Gatwick to Philadelphia flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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