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Cheap flights from London Stansted Airport to Philadelphia from £354

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
STN — PHL
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Stansted to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Stansted (STN) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 September 2025.

Round-trip from

£440

One-way from

£354

Popular in

August

Cheapest in

February

Average price

£489
18/12-28/12
  • 18/12-28/12
  • 2 total stops
  • 24h 20m total
  • London to Philadelphia
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10/11
  • 10/11
  • 1 total stop
  • 12h 30m total
  • London to Philadelphia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£30 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Stansted to Philadelphia

Cheapest flights from Stansted to Philadelphia
Explore the most affordable flight options available from Stansted to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Thu 18/1206:00STN - PHL
1 stop15h 00mMultiple Airlines
Sun 28/1217:30PHL - STN
1 stop9h 20mMultiple Airlines
Deal found 17/9£440
Sat 1/1106:30STN - PHL
1 stop14h 30mMultiple Airlines
Sat 8/1117:30PHL - STN
1 stop9h 20mMultiple Airlines
Deal found 17/9£442
Mon 3/1114:05STN - PHL
3 stops31h 00mMultiple Airlines
Mon 10/1115:30PHL - STN
3 stops25h 35mMultiple Airlines
Deal found 15/9£489
Wed 15/1007:30STN - PHL
3 stops30h 22mMultiple Airlines
Fri 17/1016:35PHL - STN
3 stops25h 35mMultiple Airlines
Deal found 17/9£532
Wed 19/1105:55STN - PHL
3 stops31h 52mMultiple Airlines
Mon 24/1105:15PHL - STN
3 stops36h 25mMultiple Airlines
Deal found 16/9£539
Tue 23/920:00STN - PHL
2 stops25h 00mMultiple Airlines
Wed 8/1017:35PHL - STN
2 stops25h 20mMultiple Airlines
Deal found 17/9£553
Thu 16/1012:25STN - PHL
3 stops32h 35mMultiple Airlines
Thu 23/1015:25PHL - STN
3 stops27h 50mMultiple Airlines
Deal found 16/9£570
Wed 15/1021:05STN - PHL
3 stops38h 10mMultiple Airlines
Fri 31/1016:35PHL - STN
3 stops27h 35mMultiple Airlines
Deal found 17/9£574

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted 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, Cheapflights users made 858,174 searches. Data last updated 18 September 2025.
Use the filters below to find and compare flights from London Stansted Airport to Philadelphia that are best for you.

Fly from

Stansted

Fly to

Philadelphia

Route

Depart

Return

Price

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 18/12

06:00-16:00

1 stop15h 00m

Philadelphia

Sun 28/12

17:30-07:50

1 stop9h 20m

£440

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sat 1/11

06:30-17:00

1 stop14h 30m

Philadelphia

Sat 8/11

17:30-07:50

1 stop9h 20m

£442

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 3/11

14:05-16:05

3 stops31h 00m

Philadelphia

Mon 10/11

15:30-22:05

3 stops25h 35m

£489

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 19/11

05:55-08:47

3 stops31h 52m

Philadelphia

Mon 24/11

05:15-22:40

3 stops36h 25m

£539

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 24/11

06:30-22:56

3 stops21h 26m

Philadelphia

Sat 6/12

18:10-16:35

2 stops17h 25m

£555

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 8/10

07:30-08:52

3 stops30h 22m

Philadelphia

Tue 14/10

05:33-17:55

3 stops31h 22m

£564

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 16/10

12:25-16:00

3 stops32h 35m

Philadelphia

Thu 23/10

15:25-00:15

3 stops27h 50m

£570

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 15/10

21:05-06:15

3 stops38h 10m

Philadelphia

Fri 31/10

16:35-00:10

3 stops27h 35m

£574

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 2/10

22:55-19:00

1 stop25h 05m

Philadelphia

Sun 5/10

07:15-07:50

2 stops19h 35m

£582

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 31/10

13:55-17:35

3 stops31h 40m

Philadelphia

Fri 7/11

09:20-15:55

3 stops25h 35m

£600

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 20 results
1
2

Best time to book a flight from Stansted to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Stansted with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Stansted Airport to Philadelphia

What is the cheapest month to book a flight from London Stansted Airport to Philadelphia?

Currently, March is the cheapest month in which you can book a flight from London Stansted Airport to Philadelphia (average of £648). Flying from London Stansted Airport to Philadelphia in July is currently the most expensive (average of £839). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Stansted to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from London Stansted?

    Most people fly into Philadelphia (PHL) if they book a flight to Philadelphia from London Stansted. On average, Philadelphia has 0 inbound flights from London Stansted per day from 0 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • Can I find deals for flights from Stansted to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Stansted to Philadelphia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Stansted to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to Philadelphia.

  • Can I find deals for business class flights from Stansted to Philadelphia?

    Yes. Cheapflights offers flight deals from Stansted to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Stansted Airport to Philadelphia?

    Currently, March is the cheapest month in which you can book a flight from London Stansted Airport to Philadelphia (average of £648). Flying from London Stansted Airport to Philadelphia in July is currently the most expensive (average of £839). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Stansted to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Southend to Dulles Intl flights
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Gatwick to Erie flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Stansted to Philadelphia?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Philadelphia from Stansted today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Stansted to Philadelphia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Stansted to Philadelphia.

Can Cheapflights find flights from Stansted to Philadelphia with no change fees?

Yes, we can. To see specific flights from Stansted to Philadelphia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Stansted to Philadelphia become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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