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Cheap flights from Philadelphia to London from $394

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 9/20. 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 - 11:20 amPHL  Philadelphia-SEN London Southend
14h 55m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat
Multiple Airlines Logo
5:15 pm - 6:55 pmSEN  London Southend-PHL Philadelphia
30h 40m2 stops Berlin Brandenburg Dublin
$950Multiple Airlines
Mon, Oct 19 - Thu, Oct 22
Multiple Airlines Logo
5:05 pm - 4:40 pmPHL  Philadelphia-SEN London Southend
18h 35m2 stops Toronto Pearson Intl Amsterdam Schiphol
Multiple Airlines Logo
8:15 am - 10:56 pmSEN  London Southend-PHL Philadelphia
19h 41m2 stops Amsterdam Schiphol Toronto Pearson Intl
$969Multiple Airlines
Wed, Dec 2 - Tue, Dec 8
Multiple Airlines Logo
5:05 pm - 4:40 pmPHL  Philadelphia-SEN London Southend
18h 35m2 stops Toronto Pearson Intl Amsterdam Schiphol
Multiple Airlines Logo
8:15 am - 10:56 pmSEN  London Southend-PHL Philadelphia
19h 41m3 stops Amsterdam Schiphol Frankfurt am Main Toronto Pearson Intl
$973Multiple Airlines
Wed, Dec 2 - Tue, Dec 8
Multiple Airlines Logo
5:05 pm - 4:40 pmPHL  Philadelphia-SEN London Southend
18h 35m2 stops Toronto Pearson Intl Amsterdam Schiphol
Multiple Airlines Logo
8:15 am - 10:56 pmSEN  London Southend-PHL Philadelphia
19h 41m2 stops Amsterdam Schiphol Toronto Pearson Intl
$984Multiple Airlines
Wed, Dec 2 - Tue, Dec 8
Multiple Airlines Logo
5:05 pm - 4:40 pmPHL  Philadelphia-SEN London Southend
18h 35m2 stops Toronto Pearson Intl Amsterdam Schiphol
Multiple Airlines Logo
8:15 am - 10:56 pmSEN  London Southend-PHL Philadelphia
19h 41m3 stops Amsterdam Schiphol Frankfurt am Main Toronto Pearson Intl
$985Multiple Airlines
Wed, Dec 2 - Tue, Dec 8
Multiple Airlines Logo
3:25 pm - 2:00 pmPHL  Philadelphia-SEN London Southend
17h 35m2 stops Montreal Pierre Elliott Trudeau Intl Geneva Geneve-Cointrin
Multiple Airlines Logo
7:50 am - 10:46 pmSEN  London Southend-PHL Philadelphia
19h 56m3 stops Geneva Geneve-Cointrin Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
$995Multiple Airlines
Thu, Oct 8 - Mon, Oct 12
Multiple Airlines Logo
5:05 pm - 2:50 pmPHL  Philadelphia-SEN London Southend
16h 45m2 stops Toronto Pearson Intl Amsterdam Schiphol
Multiple Airlines Logo
7:15 am - 10:56 pmSEN  London Southend-PHL Philadelphia
20h 41m2 stops Amsterdam Schiphol Toronto Pearson Intl
$1,071Multiple Airlines
Sun, Nov 15 - Sat, Nov 21
Multiple Airlines Logo
5:05 pm - 2:50 pmPHL  Philadelphia-SEN London Southend
16h 45m2 stops Toronto Pearson Intl Amsterdam Schiphol
Multiple Airlines Logo
7:15 am - 10:56 pmSEN  London Southend-PHL Philadelphia
20h 41m3 stops Amsterdam Schiphol Frankfurt am Main Toronto Pearson Intl
$1,080Multiple Airlines
Sun, Nov 15 - Sat, Nov 21
Multiple Airlines Logo
3:25 pm - 11:20 amPHL  Philadelphia-SEN London Southend
14h 55m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat
Multiple Airlines Logo
4:50 pm - 5:00 pmSEN  London Southend-PHL Philadelphia
29h 10m2 stops Barcelona-El Prat Dublin
$1,083Multiple Airlines
Mon, Oct 19 - Sat, Oct 24
Multiple Airlines Logo
9:15 am - 7:35 pmPHL  Philadelphia-SEN London Southend
30h 20m2 stops Toronto Pearson Intl Amsterdam Schiphol
Multiple Airlines Logo
7:15 am - 10:56 pmSEN  London Southend-PHL Philadelphia
20h 41m2 stops Amsterdam Schiphol Toronto Pearson Intl
$1,104Multiple Airlines
Sat, Oct 31 - Sat, Nov 14

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Customize your flight search to find flights from Philadelphia to London Southend 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 Southend Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Mon 10/19

3:25 pm-11:20 am

2 stops14h 55m

London Southend

Thu 10/22

5:15 pm-6:55 pm

2 stops30h 40m

$950

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Wed 12/2

5:05 pm-4:40 pm

2 stops18h 35m

London Southend

Tue 12/8

8:15 am-10:56 pm

2 stops19h 41m

$969

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Wed 12/2

5:05 pm-4:40 pm

2 stops18h 35m

London Southend

Tue 12/8

8:15 am-10:56 pm

3 stops19h 41m

$973

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Wed 12/2

5:05 pm-4:40 pm

2 stops18h 35m

London Southend

Tue 12/8

8:15 am-10:56 pm

2 stops19h 41m

$984

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Wed 12/2

5:05 pm-4:40 pm

2 stops18h 35m

London Southend

Tue 12/8

8:15 am-10:56 pm

3 stops19h 41m

$985

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Thu 10/8

3:25 pm-2:00 pm

2 stops17h 35m

London Southend

Mon 10/12

7:50 am-10:46 pm

3 stops19h 56m

$995
Quickest round-trip

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Sun 11/15

5:05 pm-2:50 pm

2 stops16h 45m

London Southend

Sat 11/21

7:15 am-10:56 pm

2 stops20h 41m

$1,071

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Sun 11/15

5:05 pm-2:50 pm

2 stops16h 45m

London Southend

Sat 11/21

7:15 am-10:56 pm

3 stops20h 41m

$1,080

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Mon 10/19

3:25 pm-11:20 am

2 stops14h 55m

London Southend

Sat 10/24

4:50 pm-5:00 pm

2 stops29h 10m

$1,083

PhiladelphiaLondon

PHL Philadelphia - SEN London Southend

PHLSEN

Philadelphia

Sat 10/31

9:15 am-7:35 pm

2 stops30h 20m

London Southend

Sat 11/14

7:15 am-10:56 pm

2 stops20h 41m

$1,104

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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When to book flights from Philadelphia to London Southend Airport

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

Cheap Philadelphia to London Southend Airport (PHL to SEN) flight deals and tips

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

Fastest flight time

14h 20m

Direct flights

None
The fastest flight from Philadelphia to London Southend Airport takes 14h 20m
There are no direct flights from Philadelphia to London Southend Airport. There are no popular flight routes from Philadelphia to London Southend Airport.
Search flight deals

Frequently asked questions about flying from Philadelphia to London Southend Airport

  • How far is Philadelphia to London Southend by plane?

    The distance between Philadelphia and London Southend is about 3570.8 mi. Flights usually cover this in 14h 20m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Philadelphia Airport to London Southend Airport refresh daily.

  • How old do you have to be to fly from Philadelphia Airport to London Southend 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 Southend Airport.

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

    The travel and health documents required for your trip to London Southend Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Southend Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Philadelphia to London Southend Airport

  • How do I get Price Alerts for flights from Philadelphia to London Southend Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Philadelphia from London Southend Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Philadelphia to London Southend Airport with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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?

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?

Flights from Philadelphia to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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 not ready to book a flight from Philadelphia to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Southend Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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