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Cheap flights from Philadelphia to London from £123

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 20/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Philadelphia to London (PHL-LGW)

Cheap return flights

British Airways Logo
14:05 - 10:40PHL-LGW
15h 35m1 stop
British Airways Logo
16:05 - 16:00LGW-PHL
28h 55m1 stop
£362British Airways
Find Deal
ons, 24 sep - mån, 29 sep
American Airlines Logo
11:41 - 06:35PHL-LGW
13h 54m1 stop
American Airlines Logo
15:05 - 07:43LGW-PHL
21h 38m2 stops
£365American Airlines
Find Deal
tis, 9 sep - tis, 30 sep
British Airways Logo
06:25 - 07:30PHL-LGW
20h 05m1 stop
British Airways Logo
11:20 - 14:55LGW-PHL
32h 35m1 stop
£367British Airways
Find Deal
ons, 14 jan - tis, 20 jan
British Airways Logo
21:05 - 21:50PHL-LGW
19h 45m1 stop
British Airways Logo
14:30 - 09:40LGW-PHL
24h 10m1 stop
£372British Airways
Find Deal
tis, 30 sep - fre, 10 okt
Logo
14:07 - 10:00PHL-LGW
14h 53m1 stop
Logo
14:00 - 12:53LGW-PHL
27h 53m1 stop
£378
Find Deal
ons, 1 okt - ons, 8 okt
Logo
05:15 - 10:10PHL-LGW
23h 55m1 stop
Logo
14:00 - 00:52LGW-PHL
15h 52m1 stop
£379
Find Deal
sön, 14 sep - mån, 15 sep
Logo
08:00 - 10:00PHL-LGW
21h 00m1 stop
Logo
14:00 - 01:14LGW-PHL
15h 14m1 stop
£384
Find Deal
ons, 22 okt - tors, 30 okt
Logo
08:00 - 10:00PHL-LGW
21h 00m1 stop
Logo
14:00 - 01:14LGW-PHL
15h 14m1 stop
£386
Find Deal
tis, 21 okt - tors, 30 okt
Logo
08:00 - 10:00PHL-LGW
21h 00m1 stop
Logo
14:00 - 23:47LGW-PHL
13h 47m1 stop
£386
Find Deal
tis, 21 okt - fre, 31 okt
JetBlue Logo
07:00 - 09:35PHL-LGW
21h 35m1 stop
JetBlue Logo
12:10 - 21:50LGW-PHL
14h 40m1 stop
£437JetBlue
Find Deal
sön, 7 sep - tis, 16 sep

British Airways flights from Philadelphia to London Gatwick Airport

Our best British Airways deals on Philadelphia to London Gatwick Airport flight tickets
British Airways
24 Sept
PHL14:05Philadelphia
15h 35m
1 stop
LGW10:40London Gatwick
29 Sept
LGW16:05London Gatwick
28h 55m
1 stop
PHL16:00Philadelphia
£362
Find similar
British Airways
14 Jan
PHL06:25Philadelphia
20h 05m
1 stop
LGW07:30London Gatwick
20 Jan
LGW11:20London Gatwick
32h 35m
1 stop
PHL14:55Philadelphia
£367
Find similar
British Airways
30 Sept
PHL21:05Philadelphia
19h 45m
1 stop
LGW21:50London Gatwick
10 Oct
LGW14:30London Gatwick
24h 10m
1 stop
PHL09:40Philadelphia
£372
Find similar

JetBlue flights from Philadelphia to London Gatwick Airport

Our best JetBlue deals on Philadelphia to London Gatwick Airport flight tickets
JetBlue
7 Sept
PHL07:00Philadelphia
21h 35m
1 stop
LGW09:35London Gatwick
16 Sept
LGW12:10London Gatwick
14h 40m
1 stop
PHL21:50Philadelphia
£437
Find similar
JetBlue
2 Sept
PHL17:50Philadelphia
10h 45m
1 stop
LGW09:35London Gatwick
12 Sept
LGW12:10London Gatwick
14h 40m
1 stop
PHL21:50Philadelphia
£443
Find similar
JetBlue
31 Aug
PHL10:15Philadelphia
18h 20m
1 stop
LGW09:35London Gatwick
3 Sept
LGW12:10London Gatwick
26h 12m
1 stop
PHL09:22Philadelphia
£465
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Philadelphia to London Gatwick Airport 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, momondo users made 279,928 searches. Data last updated 19 augusti 2025.
Use the filters below to find and compare flights from Philadelphia to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

ons 24/9

14:05-10:40

1 stop15h 35m

London Gatwick

mån 29/9

16:05-16:00

1 stop28h 55m

£362

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

tis 9/9

11:41-06:35

1 stop13h 54m

London Gatwick

tis 30/9

15:05-07:43

2 stops21h 38m

£365

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

ons 14/1

06:25-07:30

1 stop20h 05m

London Gatwick

tis 20/1

11:20-14:55

1 stop32h 35m

£367

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

tis 30/9

21:05-21:50

1 stop19h 45m

London Gatwick

fre 10/10

14:30-09:40

1 stop24h 10m

£372

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

ons 1/10

14:07-10:00

1 stop14h 53m

London Gatwick

ons 8/10

14:00-12:53

1 stop27h 53m

£378

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

sön 14/9

05:15-10:10

1 stop23h 55m

London Gatwick

mån 15/9

14:00-00:52

1 stop15h 52m

£379

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

ons 22/10

08:00-10:00

1 stop21h 00m

London Gatwick

tors 30/10

14:00-01:14

1 stop15h 14m

£384

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

tis 21/10

08:00-10:00

1 stop21h 00m

London Gatwick

tors 30/10

14:00-01:14

1 stop15h 14m

£386

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

tis 21/10

08:00-10:00

1 stop21h 00m

London Gatwick

fre 31/10

14:00-23:47

1 stop13h 47m

£386

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

sön 7/9

07:00-09:35

1 stop21h 35m

London Gatwick

tis 16/9

12:10-21:50

1 stop14h 40m

£437

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to London from

How to get the cheapest flight ticket from Philadelphia to London Gatwick Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Gatwick Airport?

The cheapest month to fly to London Gatwick Airport from Philadelphia is in September. Flight prices, which tend to average around £456, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in September, then you should wait until March to fly from Philadelphia, when ticket prices are also cheap, with an average price of £494.

When to book flights from Philadelphia to London Gatwick Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to London Gatwick Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Philadelphia to London Gatwick Airport (PHL to LGW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to London Gatwick Airport

Best price found

£123

Fastest flight time

9h 55m

Direct flights

None
The best one-way flight to London Gatwick Airport from Philadelphia in the past 72 hours is £123. The best return flight deal from Philadelphia to London Gatwick Airport found on momondo in the last 72 hours is £362.
The fastest flight from Philadelphia to London Gatwick Airport takes 9h 55m
There are no direct flights from Philadelphia to London Gatwick Airport. Popular non-direct route for this connection is Philadelphia Airport - London Gatwick Airport.
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  • How far is Philadelphia to London Gatwick by plane?

    A flight from Philadelphia to London Gatwick will travel around 3544.3 mi. Typically, this will take 13h 05m by plane in normal conditions.

  • When did momondo last update prices for flights from Philadelphia Airport to London Gatwick Airport?

    Prices for flights from Philadelphia Airport to London Gatwick Airport are updated daily.

  • How old do you have to be to fly from Philadelphia Airport to London Gatwick Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to London Gatwick Airport.

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The travel and health documents you'll need for your trip to London Gatwick Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Maidstone
Slough
Gatwick
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Dartford
Hounslow
Dover
Chelmsford
Hayes
Folkestone
Bedford

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to London?

It is quick and easy to find Philadelphia to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Philadelphia to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Philadelphia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Philadelphia to London?

momondo helps you find the best flight between Philadelphia and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Philadelphia to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Philadelphia to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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