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Cheap flights from London Stansted Airport to Philadelphia from £303

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Stansted Airport to Philadelphia departing on 4/6. 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 London Stansted Airport to Philadelphia

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:30 - 18:55
STN
-
PHL
17h 25m
1 stop
Multiple Airlines Logo
20:25 - 17:05
PHL
-
STN
15h 40m
1 stop
£585Multiple Airlines
Thu, 23 Apr - Mon, 27 Apr
Multiple Airlines Logo
09:00 - 22:43
STN
-
PHL
18h 43m
3 stops
Multiple Airlines Logo
10:25 - 20:10
PHL
-
STN
28h 45m
3 stops
£605Multiple Airlines
Tue, 5 May - Sat, 9 May
Multiple Airlines Logo
09:00 - 22:43
STN
-
PHL
18h 43m
3 stops
Multiple Airlines Logo
06:00 - 20:10
PHL
-
STN
33h 10m
3 stops
£608Multiple Airlines
Tue, 5 May - Sat, 9 May
Multiple Airlines Logo
07:05 - 18:55
STN
-
PHL
16h 50m
2 stops
Multiple Airlines Logo
20:25 - 12:45
PHL
-
STN
11h 20m
1 stop
£612Multiple Airlines
Tue, 15 Sep - Tue, 13 Oct
Multiple Airlines Logo
19:15 - 21:33
STN
-
PHL
31h 18m
3 stops
Multiple Airlines Logo
06:00 - 14:35
PHL
-
STN
27h 35m
3 stops
£613Multiple Airlines
Mon, 15 Jun - Tue, 23 Jun
Multiple Airlines Logo
07:20 - 21:33
STN
-
PHL
19h 13m
3 stops
Multiple Airlines Logo
17:40 - 00:30
PHL
-
STN
25h 50m
2 stops
£619Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
07:20 - 22:43
STN
-
PHL
20h 23m
2 stops
Multiple Airlines Logo
17:40 - 00:30
PHL
-
STN
25h 50m
3 stops
£623Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
06:30 - 22:43
STN
-
PHL
21h 13m
3 stops
Multiple Airlines Logo
07:30 - 00:30
PHL
-
STN
36h 00m
3 stops
£624Multiple Airlines
Mon, 27 Apr - Thu, 30 Apr
Multiple Airlines Logo
07:20 - 21:33
STN
-
PHL
19h 13m
3 stops
Multiple Airlines Logo
17:40 - 00:30
PHL
-
STN
25h 50m
3 stops
£626Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
12:00 - 16:05
STN
-
PHL
33h 05m
2 stops
Multiple Airlines Logo
17:40 - 22:25
PHL
-
STN
23h 45m
2 stops
£631Multiple Airlines
Mon, 25 May - Mon, 1 Jun

momondo Fare Finder

 
Customise your flight search to find flights from London Stansted Airport to Philadelphia 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 12 April 2026.
Use the filters below to find and compare flights from London Stansted Airport to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 23/4

06:30-18:55

1 stop17h 25m

Philadelphia

Mon 27/4

20:25-17:05

1 stop15h 40m

£585

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 5/5

09:00-22:43

3 stops18h 43m

Philadelphia

Sat 9/5

10:25-20:10

3 stops28h 45m

£605

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 5/5

09:00-22:43

3 stops18h 43m

Philadelphia

Sat 9/5

06:00-20:10

3 stops33h 10m

£608
Fastest return journey

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 15/9

07:05-18:55

2 stops16h 50m

Philadelphia

Tue 13/10

20:25-12:45

1 stop11h 20m

£612

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 15/6

19:15-21:33

3 stops31h 18m

Philadelphia

Tue 23/6

06:00-14:35

3 stops27h 35m

£613

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 7/5

07:20-21:33

3 stops19h 13m

Philadelphia

Thu 14/5

17:40-00:30

2 stops25h 50m

£619

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 7/5

07:20-22:43

2 stops20h 23m

Philadelphia

Thu 14/5

17:40-00:30

3 stops25h 50m

£623

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 27/4

06:30-22:43

3 stops21h 13m

Philadelphia

Thu 30/4

07:30-00:30

3 stops36h 00m

£624

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 7/5

07:20-21:33

3 stops19h 13m

Philadelphia

Thu 14/5

17:40-00:30

3 stops25h 50m

£626

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 25/5

12:00-16:05

2 stops33h 05m

Philadelphia

Mon 1/6

17:40-22:25

2 stops23h 45m

£631

Flights are sorted by cheapest return flights first.

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

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

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 day to depart on your flight to Philadelphia?

Our data shows that Tuesday is the least expensive day to fly to Philadelphia. Tickets to fly out on this day can be as low as £600. On the other hand, Sunday is the most expensive day to depart from London Stansted Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £671.

What is the cheapest time of day to depart on your flight to Philadelphia?

The cheapest time of day to fly to Philadelphia is in the morning when flights can be purchased for as low as £620. At midday is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £627 per ticket.

When to book flights from London Stansted Airport to Philadelphia

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

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

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

Fastest flight time

14h 30m

Direct flights

None
The fastest flight from London Stansted Airport to Philadelphia takes 14h 30m
There are no direct flights from London Stansted Airport to Philadelphia. There are no popular flight routes from London Stansted Airport to Philadelphia.
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Frequently asked questions about flying from London Stansted Airport to Philadelphia

  • How far is London Stansted to Philadelphia by plane?

    Philadelphia is 3545.2 mi away from London Stansted. A reasonable flight in good conditions will take 14h 30m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Stansted Airport to Philadelphia Airport.

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

    The required travel and health documents for your Philadelphia 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 Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Newark
Vineland
King of Prussia
Dover
Reading
Essington
Rehoboth Beach
West Chester
Cherry Hill
Dewey Beach

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Philadelphia for you.

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

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

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

momondo provides multiple filters to help you find the best flight to Philadelphia from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of London to Philadelphia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Philadelphia trip

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