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Cheap flights from Philadelphia to London from $284

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 10/16. 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

Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:25 pm - 10:00 amPHL  Philadelphia-LGW London Gatwick
13h 35m1 stop Orlando
Multiple Airlines Logo
6:10 pm - 6:55 pmLGW  London Gatwick-PHL Philadelphia
29h 45m2 stops Hamburg Dublin
$850Multiple Airlines
Sat, Oct 10 - Mon, Oct 19
Multiple Airlines Logo
7:45 am - 10:00 amPHL  Philadelphia-LGW London Gatwick
21h 15m1 stop Orlando
Multiple Airlines Logo
2:00 pm - 9:10 amLGW  London Gatwick-PHL Philadelphia
24h 10m1 stop Orlando
$853Multiple Airlines
Sat, Oct 10 - Mon, Oct 19
Multiple Airlines Logo
3:25 pm - 10:00 amPHL  Philadelphia-LGW London Gatwick
13h 35m1 stop Orlando
Multiple Airlines Logo
2:00 pm - 12:20 amLGW  London Gatwick-PHL Philadelphia
15h 20m1 stop Orlando
$872Multiple Airlines
Sat, Oct 17 - Sat, Oct 24
Multiple Airlines Logo
9:15 am - 7:45 pmPHL  Philadelphia-LGW London Gatwick
29h 30m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
8:50 am - 10:56 pmLGW  London Gatwick-PHL Philadelphia
19h 06m3 stops Dublin Frankfurt am Main Toronto Pearson Intl
$873Multiple Airlines
Thu, Nov 12 - Wed, Nov 18
Multiple Airlines Logo
3:25 pm - 5:50 pmPHL  Philadelphia-LGW London Gatwick
21h 25m2 stops Montreal Pierre Elliott Trudeau Intl Milan Malpensa
Multiple Airlines Logo
6:55 am - 9:32 pmLGW  London Gatwick-PHL Philadelphia
19h 37m2 stops Milan Malpensa Montreal Pierre Elliott Trudeau Intl
$873Multiple Airlines
Wed, Oct 7 - Wed, Oct 14
Multiple Airlines Logo
2:50 pm - 10:00 amPHL  Philadelphia-LGW London Gatwick
14h 10m1 stop Orlando
Multiple Airlines Logo
2:00 pm - 12:20 amLGW  London Gatwick-PHL Philadelphia
15h 20m1 stop Orlando
$873Multiple Airlines
Wed, Sep 30 - Sun, Oct 11
Multiple Airlines Logo
1:00 pm - 10:00 amPHL  Philadelphia-LGW London Gatwick
16h 00m1 stop Orlando
Multiple Airlines Logo
2:00 pm - 11:59 pmLGW  London Gatwick-PHL Philadelphia
14h 59m1 stop Orlando
$873Multiple Airlines
Tue, Aug 25 - Mon, Aug 31
Multiple Airlines Logo
8:25 pm - 12:45 pmPHL  Philadelphia-LGW London Gatwick
11h 20m1 stop Dublin
Multiple Airlines Logo
8:50 am - 6:55 pmLGW  London Gatwick-PHL Philadelphia
15h 05m1 stop Dublin
$873Multiple Airlines
Sun, Sep 6 - Tue, Sep 15
Multiple Airlines Logo
5:32 pm - 6:20 amPHL  Philadelphia-LGW London Gatwick
31h 48m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Multiple Airlines Logo
2:00 pm - 11:33 amLGW  London Gatwick-PHL Philadelphia
26h 33m1 stop Orlando
$874Multiple Airlines
Fri, Oct 2 - Sun, Oct 11
Multiple Airlines Logo
3:20 pm - 6:15 pmPHL  Philadelphia-LGW London Gatwick
21h 55m2 stops Montreal Pierre Elliott Trudeau Intl Lyon-Saint Exupéry
Multiple Airlines Logo
8:05 pm - 4:00 pmLGW  London Gatwick-PHL Philadelphia
24h 55m2 stops Berlin Brandenburg Dublin
$874Multiple Airlines
Wed, Dec 2 - Tue, Dec 8

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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 August 10, 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 Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Sat 10/10

3:25 pm-10:00 am

1 stop13h 35m

London Gatwick

Mon 10/19

6:10 pm-6:55 pm

2 stops29h 45m

$850

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Sat 10/10

7:45 am-10:00 am

1 stop21h 15m

London Gatwick

Mon 10/19

2:00 pm-9:10 am

1 stop24h 10m

$853

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Sat 10/17

3:25 pm-10:00 am

1 stop13h 35m

London Gatwick

Sat 10/24

2:00 pm-12:20 am

1 stop15h 20m

$872

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Thu 11/12

9:15 am-7:45 pm

2 stops29h 30m

London Gatwick

Wed 11/18

8:50 am-10:56 pm

3 stops19h 06m

$873

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Wed 10/7

3:25 pm-5:50 pm

2 stops21h 25m

London Gatwick

Wed 10/14

6:55 am-9:32 pm

2 stops19h 37m

$873

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Wed 9/30

2:50 pm-10:00 am

1 stop14h 10m

London Gatwick

Sun 10/11

2:00 pm-12:20 am

1 stop15h 20m

$873

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Tue 8/25

1:00 pm-10:00 am

1 stop16h 00m

London Gatwick

Mon 8/31

2:00 pm-11:59 pm

1 stop14h 59m

$873
Quickest round-trip

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Sun 9/6

8:25 pm-12:45 pm

1 stop11h 20m

London Gatwick

Tue 9/15

8:50 am-6:55 pm

1 stop15h 05m

$873

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Fri 10/2

5:32 pm-6:20 am

2 stops31h 48m

London Gatwick

Sun 10/11

2:00 pm-11:33 am

1 stop26h 33m

$874

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Wed 12/2

3:20 pm-6:15 pm

2 stops21h 55m

London Gatwick

Tue 12/8

8:05 pm-4:00 pm

2 stops24h 55m

$874

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 29% 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

13h 30m

Direct flights

None
The fastest flight from Philadelphia to London Gatwick Airport takes 13h 30m
There are no direct flights from Philadelphia to London Gatwick Airport. There are no popular flight routes from Philadelphia to London Gatwick Airport.
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Frequently asked questions about flying from Philadelphia to London Gatwick Airport

  • 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 13h 30m 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 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.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Wembley
Croydon
Dover
Stansted
Richmond
Kingston upon Thames
Harrow
Watford
Cobham
Slough
Uxbridge
Worthing
Romford
Ilford
Bedford

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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