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Cheap flights from London Gatwick Airport to Philadelphia from £349

LGW — PHL
2 Oct — 9 Oct1
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

Wed 30/914:00 -
1 stop24h 05m
Wed 7/1014:50 -
1 stop14h 10m
Deal found 2/9£603
Sat 10/1014:00 -
1 stop14h 43m
Sat 17/1008:30 -
2 stops20h 30m
Deal found 1/9£605
Sun 6/914:00 -
1 stop14h 59m
Mon 21/905:15 -
1 stop23h 45m
Deal found 1/9£605
Fri 18/914:00 -
1 stop24h 05m
Fri 25/912:10 -
1 stop16h 50m
Deal found 31/8£608
Sat 19/914:00 -
1 stop15h 09m
Fri 25/915:30 -
1 stop13h 30m
Deal found 1/9£611
Sat 19/914:00 -
1 stop15h 09m
Sun 20/920:02 -
2 stops32h 58m
Deal found 2/9£612
Tue 8/920:40 -
1 stop26h 05m
Tue 22/916:20 -
1 stop13h 30m
Deal found 30/8£615
Tue 20/1014:00 -
1 stop15h 08m
Sat 7/1117:20 -
2 stops33h 55m
Deal found 2/9£616
Mon 19/1020:15 -
2 stops27h 40m
Tue 27/1010:37 -
1 stop16h 13m
Deal found 1/9£618
Wed 16/914:00 -
1 stop15h 09m
Sat 19/917:45 -
1 stop35h 15m
Deal found 29/8£619
Mon 14/914:00 -
1 stop24h 30m
Mon 21/907:15 -
1 stop21h 45m
Deal found 30/8£621

Find flight deals from Gatwick to Philadelphia

Round-trip from

£603

One-way from

£349

Popular in

August

Cheapest in

January

Average price

£632
30/9-7/10
  • 30/9-7/10
  • 2 total stops
  • 38h 15m total
  • London to Philadelphia
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21/10
  • 21/10
  • 2 total stops
  • 33h 20m total
  • London to Philadelphia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£64 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Gatwick Airport to Philadelphia that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Wed 4/11

09:50-11:30

1 stop30h 40m

Philadelphia

Sun 8/11

07:35-08:15

1 stop19h 40m

£603

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Fri 18/9

14:00-11:40

1 stop26h 40m

Philadelphia

Fri 25/9

05:15-10:00

1 stop23h 45m

£622

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Thu 19/11

10:40-08:20

2 stops26h 40m

Philadelphia

Mon 23/11

13:25-20:35

3 stops26h 10m

£674

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Thu 19/11

10:40-08:20

2 stops26h 40m

Philadelphia

Mon 30/11

13:25-20:35

3 stops26h 10m

£687

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Wed 7/10

16:25-22:45

2 stops35h 20m

Philadelphia

Sun 11/10

14:09-20:25

3 stops25h 16m

£687

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Mon 2/11

10:40-21:11

2 stops39h 31m

Philadelphia

Mon 16/11

18:30-20:35

3 stops21h 05m

£687

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Mon 21/12

16:35-18:43

2 stops31h 08m

Philadelphia

Tue 26/1

08:40-09:50

2 stops20h 10m

£696

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Mon 2/11

11:00-09:37

3 stops27h 37m

Philadelphia

Mon 16/11

10:30-20:35

3 stops29h 05m

£719
Fastest return journey

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Sun 22/11

10:40-08:20

3 stops26h 40m

Philadelphia

Sun 29/11

09:10-09:50

2 stops19h 40m

£762

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Mon 21/12

16:35-18:43

2 stops31h 08m

Philadelphia

Tue 5/1

13:30-15:45

2 stops21h 15m

£839

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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

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?

Boston (BOS) – chosen by Cheapflights users on 63% 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?

Barcelona (BCN) is the most affordable one-stop option, with an average return flight price of £472.

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

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?

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

Related info for your journey

  • 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 £674, TAP AIR PORTUGAL can have you in Philadelphia from London Gatwick Airport in 26h 40m. 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

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
King of Prussia

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Gatwick to Philadelphia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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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