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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 23/9. 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 - 22:46
STN
-
PHL
45h 16m
3 stops
Multiple Airlines Logo
16:20 - 20:20
PHL
-
STN
23h 00m
2 stops
£611Multiple Airlines
Thu, 27 Aug - Wed, 9 Sep
Multiple Airlines Logo
06:30 - 18:55
STN
-
PHL
17h 25m
1 stop
Multiple Airlines Logo
20:25 - 17:35
PHL
-
STN
16h 10m
1 stop
£612Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
07:05 - 18:55
STN
-
PHL
16h 50m
2 stops
Multiple Airlines Logo
20:25 - 19:25
PHL
-
STN
18h 00m
1 stop
£613Multiple Airlines
Mon, 28 Sep - Mon, 12 Oct
Multiple Airlines Logo
22:00 - 21:34
STN
-
PHL
28h 34m
3 stops
Multiple Airlines Logo
10:05 - 19:35
PHL
-
STN
28h 30m
3 stops
£614Multiple Airlines
Tue, 25 Aug - Tue, 1 Sep
Multiple Airlines Logo
06:25 - 17:40
STN
-
PHL
16h 15m
1 stop
Multiple Airlines Logo
17:30 - 08:30
PHL
-
STN
10h 00m
1 stop
£615Multiple Airlines
Thu, 5 Nov - Mon, 16 Nov
Multiple Airlines Logo
18:55 - 16:05
STN
-
PHL
26h 10m
2 stops
Multiple Airlines Logo
16:20 - 16:55
PHL
-
STN
19h 35m
2 stops
£615Multiple Airlines
Tue, 6 Oct - Fri, 16 Oct
Multiple Airlines Logo
06:30 - 17:40
STN
-
PHL
16h 10m
1 stop
Multiple Airlines Logo
17:30 - 08:30
PHL
-
STN
10h 00m
1 stop
£616Multiple Airlines
Sat, 7 Nov - Mon, 16 Nov
Multiple Airlines Logo
07:05 - 18:55
STN
-
PHL
16h 50m
2 stops
Multiple Airlines Logo
20:25 - 19:25
PHL
-
STN
18h 00m
1 stop
£617Multiple Airlines
Mon, 28 Sep - Mon, 12 Oct
Multiple Airlines Logo
06:35 - 18:55
STN
-
PHL
17h 20m
1 stop
Multiple Airlines Logo
20:25 - 21:20
PHL
-
STN
19h 55m
1 stop
£618Multiple Airlines
Sun, 23 Aug - Sun, 30 Aug
Multiple Airlines Logo
06:35 - 22:46
STN
-
PHL
21h 11m
2 stops
Multiple Airlines Logo
18:30 - 07:50
PHL
-
STN
9h 20m
1 stop
£620Multiple Airlines
Fri, 25 Sep - Wed, 28 Oct

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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 July 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 27/8

06:30-22:46

3 stops45h 16m

Philadelphia

Wed 9/9

16:20-20:20

2 stops23h 00m

£611

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 11/8

06:30-18:55

1 stop17h 25m

Philadelphia

Tue 18/8

20:25-17:35

1 stop16h 10m

£612

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 28/9

07:05-18:55

2 stops16h 50m

Philadelphia

Mon 12/10

20:25-19:25

1 stop18h 00m

£613

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 25/8

22:00-21:34

3 stops28h 34m

Philadelphia

Tue 1/9

10:05-19:35

3 stops28h 30m

£614

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 5/11

06:25-17:40

1 stop16h 15m

Philadelphia

Mon 16/11

17:30-08:30

1 stop10h 00m

£615

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 6/10

18:55-16:05

2 stops26h 10m

Philadelphia

Fri 16/10

16:20-16:55

2 stops19h 35m

£615
Fastest return journey

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sat 7/11

06:30-17:40

1 stop16h 10m

Philadelphia

Mon 16/11

17:30-08:30

1 stop10h 00m

£616

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 28/9

07:05-18:55

2 stops16h 50m

Philadelphia

Mon 12/10

20:25-19:25

1 stop18h 00m

£617

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sun 23/8

06:35-18:55

1 stop17h 20m

Philadelphia

Sun 30/8

20:25-21:20

1 stop19h 55m

£618

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 25/9

06:35-22:46

2 stops21h 11m

Philadelphia

Wed 28/10

18:30-07:50

1 stop9h 20m

£620

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 £615. 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 £690.

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 £647. At midday is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £660 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

17h 20m

Direct flights

None
The fastest flight from London Stansted Airport to Philadelphia takes 17h 20m
There are no direct flights from London Stansted Airport to Philadelphia. There are no popular flight routes from London Stansted Airport to Philadelphia.
Search flight deals

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 17h 20m.

  • 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
Bridgeport
Vineland
King of Prussia
Newark
Reading
Rehoboth Beach
Dover
Essington
Ephrata
Cherry Hill
Dewey Beach
West Chester

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.

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