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Cheap flights from London Stansted Airport to Philadelphia from £341

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 23/6. 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
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
07:20 - 10:04
STN
-
PHL
31h 44m
2 stops
Multiple Airlines Logo
10:05 - 19:15
PHL
-
STN
28h 10m
2 stops
£610Multiple Airlines
Thu, 9 Jul - Thu, 16 Jul
Multiple Airlines Logo
08:15 - 21:34
STN
-
PHL
18h 19m
2 stops
Multiple Airlines Logo
10:05 - 18:50
PHL
-
STN
27h 45m
3 stops
£611Multiple Airlines
Mon, 20 Jul - Mon, 27 Jul
Multiple Airlines Logo
20:00 - 16:05
STN
-
PHL
25h 05m
2 stops
Multiple Airlines Logo
16:20 - 18:50
PHL
-
STN
21h 30m
2 stops
£612Multiple Airlines
Wed, 8 Jul - Mon, 20 Jul
Multiple Airlines Logo
14:05 - 16:00
STN
-
PHL
30h 55m
2 stops
Multiple Airlines Logo
17:30 - 07:50
PHL
-
STN
9h 20m
1 stop
£616Multiple Airlines
Fri, 20 Nov - Sun, 29 Nov
Multiple Airlines Logo
06:00 - 21:33
STN
-
PHL
20h 33m
3 stops
Multiple Airlines Logo
10:05 - 19:55
PHL
-
STN
28h 50m
3 stops
£619Multiple Airlines
Thu, 11 Jun - Sun, 6 Sep
Multiple Airlines Logo
11:35 - 18:55
STN
-
PHL
12h 20m
1 stop
Multiple Airlines Logo
08:35 - 07:50
PHL
-
STN
18h 15m
2 stops
£623Multiple Airlines
Tue, 23 Jun - Tue, 7 Jul
Multiple Airlines Logo
08:15 - 21:34
STN
-
PHL
18h 19m
2 stops
Multiple Airlines Logo
16:20 - 18:50
PHL
-
STN
21h 30m
2 stops
£626Multiple Airlines
Mon, 20 Jul - Mon, 27 Jul
Multiple Airlines Logo
06:35 - 18:55
STN
-
PHL
17h 20m
1 stop
Multiple Airlines Logo
20:25 - 12:55
PHL
-
STN
11h 30m
1 stop
£629Multiple Airlines
Fri, 12 Jun - Sat, 20 Jun
Multiple Airlines Logo
06:35 - 18:55
STN
-
PHL
17h 20m
1 stop
Multiple Airlines Logo
20:25 - 19:30
PHL
-
STN
18h 05m
1 stop
£632Multiple Airlines
Fri, 26 Jun - Sun, 28 Jun
Multiple Airlines Logo
06:35 - 18:55
STN
-
PHL
17h 20m
1 stop
Multiple Airlines Logo
20:25 - 12:50
PHL
-
STN
11h 25m
1 stop
£635Multiple Airlines
Fri, 12 Jun - Fri, 19 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 28 May 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 9/7

07:20-10:04

2 stops31h 44m

Philadelphia

Thu 16/7

10:05-19:15

2 stops28h 10m

£610

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 20/7

08:15-21:34

2 stops18h 19m

Philadelphia

Mon 27/7

10:05-18:50

3 stops27h 45m

£611

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 8/7

20:00-16:05

2 stops25h 05m

Philadelphia

Mon 20/7

16:20-18:50

2 stops21h 30m

£612

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 20/11

14:05-16:00

2 stops30h 55m

Philadelphia

Sun 29/11

17:30-07:50

1 stop9h 20m

£616

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 11/6

06:00-21:33

3 stops20h 33m

Philadelphia

Sun 6/9

10:05-19:55

3 stops28h 50m

£619

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 23/6

11:35-18:55

1 stop12h 20m

Philadelphia

Tue 7/7

08:35-07:50

2 stops18h 15m

£623

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 20/7

08:15-21:34

2 stops18h 19m

Philadelphia

Mon 27/7

16:20-18:50

2 stops21h 30m

£626

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 12/6

06:35-18:55

1 stop17h 20m

Philadelphia

Sat 20/6

20:25-12:55

1 stop11h 30m

£629

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 26/6

06:35-18:55

1 stop17h 20m

Philadelphia

Sun 28/6

20:25-19:30

1 stop18h 05m

£632
Fastest return journey

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 12/6

06:35-18:55

1 stop17h 20m

Philadelphia

Fri 19/6

20:25-12:50

1 stop11h 25m

£635

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 £599. 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 £629. At midday is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £637 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

11h 55m

Direct flights

None
The fastest flight from London Stansted Airport to Philadelphia takes 11h 55m
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 11h 55m.

  • 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
Rehoboth Beach
Essington
Ephrata
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

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