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Cheap flights from Philadelphia to London from $321

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 7/19. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:30 am - 10:00 am
PHL
-
LGW
21h 30m
1 stop
Multiple Airlines Logo
2:00 pm - 11:37 pm
LGW
-
PHL
14h 37m
1 stop
$691Multiple Airlines
Mon, Apr 27 - Wed, May 6
Multiple Airlines Logo
7:30 am - 10:00 am
PHL
-
LGW
21h 30m
1 stop
Multiple Airlines Logo
2:00 pm - 11:37 pm
LGW
-
PHL
14h 37m
1 stop
$696Multiple Airlines
Mon, Apr 27 - Wed, May 6
Multiple Airlines Logo
7:30 am - 10:00 am
PHL
-
LGW
21h 30m
1 stop
Multiple Airlines Logo
2:00 pm - 3:42 pm
LGW
-
PHL
30h 42m
2 stops
$700Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
5:05 am - 10:00 am
PHL
-
LGW
23h 55m
1 stop
Multiple Airlines Logo
2:00 pm - 11:37 pm
LGW
-
PHL
38h 37m
2 stops
$701Multiple Airlines
Sun, Apr 26 - Fri, May 8
Multiple Airlines Logo
7:30 am - 10:00 am
PHL
-
LGW
21h 30m
1 stop
Multiple Airlines Logo
2:00 pm - 8:59 am
LGW
-
PHL
23h 59m
1 stop
$705Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
5:05 am - 10:00 am
PHL
-
LGW
23h 55m
1 stop
Multiple Airlines Logo
2:00 pm - 11:37 pm
LGW
-
PHL
14h 37m
1 stop
$706Multiple Airlines
Sun, Apr 26 - Wed, May 6
Multiple Airlines Logo
10:54 am - 10:00 am
PHL
-
LGW
18h 06m
1 stop
Multiple Airlines Logo
2:00 pm - 3:42 pm
LGW
-
PHL
30h 42m
2 stops
$709Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
7:30 am - 10:00 am
PHL
-
LGW
21h 30m
1 stop
Multiple Airlines Logo
2:00 pm - 1:20 pm
LGW
-
PHL
28h 20m
2 stops
$718Multiple Airlines
Mon, Apr 27 - Fri, May 8
Multiple Airlines Logo
8:25 pm - 11:40 am
PHL
-
LGW
10h 15m
1 stop
Multiple Airlines Logo
9:45 am - 6:55 pm
LGW
-
PHL
14h 10m
1 stop
$721Multiple Airlines
Sat, May 2 - Thu, May 7
Multiple Airlines Logo
10:54 am - 10:00 am
PHL
-
LGW
18h 06m
1 stop
Multiple Airlines Logo
2:00 pm - 8:59 am
LGW
-
PHL
23h 59m
1 stop
$723Multiple Airlines
Mon, Apr 27 - Mon, May 4

Icelandair flights from Philadelphia to London Gatwick Airport

Our best Icelandair deals on Philadelphia to London Gatwick Airport flight tickets
Icelandair
Apr 4
PHL6:30 pmPhiladelphia
15h 10m
2 stops
LGW2:40 pmLondon Gatwick
Apr 14
LGW3:40 pmLondon Gatwick
44h 55m
2 stops
PHL7:35 amPhiladelphia
$927
Icelandair
Apr 3
PHL8:30 amPhiladelphia
25h 10m
2 stops
LGW2:40 pmLondon Gatwick
Apr 10
LGW3:40 pmLondon Gatwick
35h 58m
2 stops
PHL10:38 pmPhiladelphia
$976
Icelandair
Apr 4
PHL6:30 pmPhiladelphia
15h 10m
2 stops
LGW2:40 pmLondon Gatwick
Apr 10
LGW3:40 pmLondon Gatwick
35h 58m
2 stops
PHL10:38 pmPhiladelphia
$977

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated March 23, 2026.
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

Cheapest round-trip

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

7:30 am-10:00 am

1 stop21h 30m

London Gatwick

Wed 5/6

2:00 pm-11:37 pm

1 stop14h 37m

$691

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

7:30 am-10:00 am

1 stop21h 30m

London Gatwick

Wed 5/6

2:00 pm-11:37 pm

1 stop14h 37m

$696

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

7:30 am-10:00 am

1 stop21h 30m

London Gatwick

Mon 5/4

2:00 pm-3:42 pm

2 stops30h 42m

$700

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Sun 4/26

5:05 am-10:00 am

1 stop23h 55m

London Gatwick

Fri 5/8

2:00 pm-11:37 pm

2 stops38h 37m

$701

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

7:30 am-10:00 am

1 stop21h 30m

London Gatwick

Mon 5/4

2:00 pm-8:59 am

1 stop23h 59m

$705

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Sun 4/26

5:05 am-10:00 am

1 stop23h 55m

London Gatwick

Wed 5/6

2:00 pm-11:37 pm

1 stop14h 37m

$706

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

10:54 am-10:00 am

1 stop18h 06m

London Gatwick

Mon 5/4

2:00 pm-3:42 pm

2 stops30h 42m

$709

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

7:30 am-10:00 am

1 stop21h 30m

London Gatwick

Fri 5/8

2:00 pm-1:20 pm

2 stops28h 20m

$718
Quickest round-trip

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Sat 5/2

8:25 pm-11:40 am

1 stop10h 15m

London Gatwick

Thu 5/7

9:45 am-6:55 pm

1 stop14h 10m

$721

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

10:54 am-10:00 am

1 stop18h 06m

London Gatwick

Mon 5/4

2:00 pm-8:59 am

1 stop23h 59m

$723

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Can stopping save me money on Philadelphia to London Gatwick Airport flights?

You could potentially save up to 5% on your flight if you consider stops on a Philadelphia to London Gatwick Airport flight.

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 round-trip 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

Fastest flight time

18h 06m

Direct flights

None
The fastest flight from Philadelphia to London Gatwick Airport takes 18h 06m
There are no direct flights from Philadelphia to London Gatwick Airport. There are no popular flight routes from Philadelphia to London Gatwick Airport.
Search flight deals

  • How far is Philadelphia to London Gatwick by plane?

    The straight-line distance from Philadelphia to London Gatwick is 3544.3 mi. Typically, this will take 18h 06m 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 refresh daily.

  • How many operators does momondo search for flights from Philadelphia Airport to London Gatwick Airport?

  • 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 required travel and health documents for your London Gatwick Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Gatwick Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Philadelphia to London Gatwick Airport?

Best airlines flying from Philadelphia to London Gatwick Airport

Compare and see reviews for airlines that fly from Philadelphia to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $614Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Crawley
Wembley
Hayes
Dartford
Croydon
Harrow
Watford
Brentwood
Guildford
Stansted
Cobham
Folkestone
Romford
Richmond

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to London. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Philadelphia to London flights to just show those with flexible booking policies.

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?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Philadelphia and alert you when they change.

An easier way to manage your London Gatwick Airport trip

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