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Cheap flights from Philadelphia to London from $288

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 8/29. 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
7:00 am - 7:35 pm
PHL
-
STN
31h 35m
2 stops
Multiple Airlines Logo
6:30 am - 10:09 am
STN
-
PHL
32h 39m
2 stops
$874Multiple Airlines
Thu, Jul 30 - Mon, Aug 3
Multiple Airlines Logo
5:40 pm - 11:40 pm
PHL
-
STN
25h 00m
3 stops
Multiple Airlines Logo
12:00 pm - 6:55 pm
STN
-
PHL
35h 55m
2 stops
$875Multiple Airlines
Sun, Aug 23 - Wed, Aug 26
Multiple Airlines Logo
5:40 pm - 11:40 pm
PHL
-
STN
25h 00m
3 stops
Multiple Airlines Logo
12:00 pm - 6:55 pm
STN
-
PHL
35h 55m
2 stops
$876Multiple Airlines
Sun, Aug 23 - Sun, Aug 30
Multiple Airlines Logo
3:25 pm - 7:30 pm
PHL
-
STN
23h 05m
2 stops
Multiple Airlines Logo
10:00 pm - 4:05 pm
STN
-
PHL
23h 05m
2 stops
$877Multiple Airlines
Wed, Jul 29 - Tue, Aug 11
Multiple Airlines Logo
10:05 am - 2:45 pm
PHL
-
STN
23h 40m
3 stops
Multiple Airlines Logo
10:45 pm - 10:46 pm
STN
-
PHL
29h 01m
3 stops
$879Multiple Airlines
Mon, Aug 10 - Wed, Aug 19
Multiple Airlines Logo
10:05 am - 3:00 pm
PHL
-
STN
23h 55m
2 stops
Multiple Airlines Logo
9:20 pm - 2:49 pm
STN
-
PHL
22h 29m
3 stops
$880Multiple Airlines
Mon, Aug 10 - Wed, Aug 19
Multiple Airlines Logo
10:05 am - 3:00 pm
PHL
-
STN
23h 55m
2 stops
Multiple Airlines Logo
9:20 pm - 2:49 pm
STN
-
PHL
22h 29m
3 stops
$881Multiple Airlines
Mon, Aug 10 - Wed, Aug 19
Multiple Airlines Logo
8:25 pm - 7:35 pm
PHL
-
STN
18h 10m
1 stop
Multiple Airlines Logo
11:10 am - 6:55 pm
STN
-
PHL
12h 45m
1 stop
$882Multiple Airlines
Tue, Sep 1 - Mon, Sep 7
Multiple Airlines Logo
4:20 pm - 9:20 pm
PHL
-
STN
24h 00m
2 stops
Multiple Airlines Logo
6:35 am - 3:41 pm
STN
-
PHL
14h 06m
2 stops
$883Multiple Airlines
Thu, Aug 27 - Fri, Sep 4
Multiple Airlines Logo
10:50 am - 8:20 pm
PHL
-
STN
28h 30m
2 stops
Multiple Airlines Logo
8:45 pm - 9:32 pm
STN
-
PHL
29h 47m
3 stops
$884Multiple Airlines
Wed, Sep 9 - Mon, Sep 14

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Customize your flight search to find flights from Philadelphia to London Stansted 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 July 9, 2026.
Use the filters below to find and compare flights from Philadelphia to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Thu 7/30

7:00 am-7:35 pm

2 stops31h 35m

London Stansted

Mon 8/3

6:30 am-10:09 am

2 stops32h 39m

$874

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Sun 8/23

5:40 pm-11:40 pm

3 stops25h 00m

London Stansted

Wed 8/26

12:00 pm-6:55 pm

2 stops35h 55m

$875

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Sun 8/23

5:40 pm-11:40 pm

3 stops25h 00m

London Stansted

Sun 8/30

12:00 pm-6:55 pm

2 stops35h 55m

$876

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Wed 7/29

3:25 pm-7:30 pm

2 stops23h 05m

London Stansted

Tue 8/11

10:00 pm-4:05 pm

2 stops23h 05m

$877

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Mon 8/10

10:05 am-2:45 pm

3 stops23h 40m

London Stansted

Wed 8/19

10:45 pm-10:46 pm

3 stops29h 01m

$879

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Mon 8/10

10:05 am-3:00 pm

2 stops23h 55m

London Stansted

Wed 8/19

9:20 pm-2:49 pm

3 stops22h 29m

$880

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Mon 8/10

10:05 am-3:00 pm

2 stops23h 55m

London Stansted

Wed 8/19

9:20 pm-2:49 pm

3 stops22h 29m

$881
Quickest round-trip

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Tue 9/1

8:25 pm-7:35 pm

1 stop18h 10m

London Stansted

Mon 9/7

11:10 am-6:55 pm

1 stop12h 45m

$882

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Thu 8/27

4:20 pm-9:20 pm

2 stops24h 00m

London Stansted

Fri 9/4

6:35 am-3:41 pm

2 stops14h 06m

$883

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Wed 9/9

10:50 am-8:20 pm

2 stops28h 30m

London Stansted

Mon 9/14

8:45 pm-9:32 pm

3 stops29h 47m

$884

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 Stansted Airport

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

Cheap Philadelphia to London Stansted Airport (PHL to STN) flight deals and tips

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

Fastest flight time

9h 20m

Direct flights

None
The fastest flight from Philadelphia to London Stansted Airport takes 9h 20m
There are no direct flights from Philadelphia to London Stansted Airport. There are no popular flight routes from Philadelphia to London Stansted Airport.
Search flight deals

Frequently asked questions about flying from Philadelphia to London Stansted Airport

  • How far is Philadelphia to London Stansted by plane?

    London Stansted is 3545.2 mi away from Philadelphia. Flights usually cover this in 9h 20m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Philadelphia Airport to London Stansted Airport were last updated today.

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

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

    The travel and health documents required for your trip to London Stansted 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 Stansted 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 Stansted Airport

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

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Philadelphia from London Stansted 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 Stansted 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 compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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
Dover
Crawley
Wembley
Croydon
Stansted
Harrow
Slough
Watford
Brentwood
Ilford
Cobham
Folkestone
Guildford
Romford
Uxbridge

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?

All flight searches from Philadelphia to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Philadelphia to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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 Stansted 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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