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Cheap flights from London Stansted Airport to Philadelphia from £411

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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
STN — PHL
27 Aug — 3 Sep1
1 adult

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 22 August 2025.

Round-trip from

£521

One-way from

£411

Popular in

August

Cheapest in

February

Average price

£680
25/9-28/9
  • 25/9-28/9
  • 3 total stops
  • 32h 15m total
  • London to Philadelphia
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12/1
  • 12/1
  • 3 total stops
  • 42h 56m total
  • London to Philadelphia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£30 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in August 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 22 August 2025.

Thu 25/908:15STN - PHL
1 stop15h 45mMultiple Airlines
Sun 28/910:20PHL - STN
2 stops16h 30mMultiple Airlines
Deal found 21/8£521
Wed 10/910:35STN - PHL
1 stop13h 25mMultiple Airlines
Wed 17/920:30PHL - STN
1 stop19h 25mMultiple Airlines
Deal found 20/8£522
Sat 13/906:35STN - PHL
1 stop17h 25mMultiple Airlines
Sat 27/910:20PHL - STN
2 stops16h 25mMultiple Airlines
Deal found 20/8£523
Fri 19/906:40STN - PHL
2 stops20h 10mMultiple Airlines
Fri 3/1020:30PHL - STN
1 stop15h 05mMultiple Airlines
Deal found 20/8£530
Fri 12/912:25STN - PHL
1 stop11h 35mMultiple Airlines
Fri 26/910:20PHL - STN
2 stops23h 00mMultiple Airlines
Deal found 20/8£530
Wed 3/910:35STN - PHL
1 stop13h 25mMultiple Airlines
Sat 6/910:20PHL - STN
2 stops16h 25mMultiple Airlines
Deal found 20/8£532
Wed 8/1021:05STN - PHL
3 stops38h 10mMultiple Airlines
Sun 12/1016:03PHL - STN
3 stops26h 56mMultiple Airlines
Deal found 21/8£539
Mon 24/1108:30STN - PHL
1 stop12h 30mMultiple Airlines
Sun 30/1117:30PHL - STN
1 stop9h 20mMultiple Airlines
Deal found 19/8£544
Fri 21/1106:30STN - PHL
1 stop14h 30mMultiple Airlines
Sun 30/1117:30PHL - STN
1 stop11h 20mMultiple Airlines
Deal found 20/8£554
Wed 17/922:10STN - PHL
2 stops22h 50mMultiple Airlines
Wed 24/917:35PHL - STN
2 stops18h 20mMultiple Airlines
Deal found 19/8£565
Wed 10/910:35STN - PHL
1 stop13h 25mMultiple Airlines
Sat 20/920:30PHL - STN
1 stop12h 10mMultiple Airlines
Deal found 20/8£576

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 22 August 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 25/9

08:15-19:00

1 stop15h 45m

Philadelphia

Sun 28/9

10:20-07:50

2 stops16h 30m

£521

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 10/9

10:35-19:00

1 stop13h 25m

Philadelphia

Wed 17/9

20:30-20:55

1 stop19h 25m

£522

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sat 13/9

06:35-19:00

1 stop17h 25m

Philadelphia

Sat 27/9

10:20-07:45

2 stops16h 25m

£523

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 19/9

06:40-21:50

2 stops20h 10m

Philadelphia

Fri 3/10

20:30-16:35

1 stop15h 05m

£530

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 12/9

12:25-19:00

1 stop11h 35m

Philadelphia

Fri 26/9

10:20-14:20

2 stops23h 00m

£530

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 18/9

06:55-19:00

1 stop17h 05m

Philadelphia

Thu 25/9

18:10-14:20

2 stops39h 10m

£530

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 3/9

10:35-19:00

1 stop13h 25m

Philadelphia

Sat 6/9

10:20-07:45

2 stops16h 25m

£532

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 8/10

21:05-06:15

3 stops38h 10m

Philadelphia

Sun 12/10

16:03-23:59

3 stops26h 56m

£539

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 24/11

08:30-16:00

1 stop12h 30m

Philadelphia

Sun 30/11

17:30-07:50

1 stop9h 20m

£544

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 21/11

06:30-16:00

1 stop14h 30m

Philadelphia

Sun 30/11

17:30-09:50

1 stop11h 20m

£554

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 23 results
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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

Browse thousands of different options on Cheapflights for your next trip

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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 John F Kennedy Intl flights
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Southend to Newark flights
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London City to Pittsburgh flights
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Southend to Dulles Intl flights
Heathrow to State College flights
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Luton to Pittsburgh flights
Heathrow to Erie flights
London City to Harrisburg flights
Gatwick to Erie flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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