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Cheap flights from London Stansted Airport to Philadelphia from £340

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
STN — PHL
19 Aug — 26 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to Philadelphia

Enter your travel dates to find the best prices.

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 20 July 2026.

Mon 31/820:50
STN
-
PHL
3 stops22h 59m
Multiple Airlines
Sun 6/915:25
PHL
-
STN
2 stops24h 00m
Multiple Airlines
Deal found 15/7£605
Thu 3/906:30
STN
-
PHL
3 stops32h 41m
Multiple Airlines
Sun 11/1015:25
PHL
-
STN
2 stops14h 55m
Multiple Airlines
Deal found 16/7£609
Sun 30/822:05
STN
-
PHL
2 stops23h 00m
Multiple Airlines
Sun 6/915:25
PHL
-
STN
2 stops18h 05m
Multiple Airlines
Deal found 16/7£621
Mon 2/1106:10
STN
-
PHL
1 stop16h 30m
Multiple Airlines
Sun 15/1117:30
PHL
-
STN
1 stop9h 20m
Multiple Airlines
Deal found 16/7£627
Wed 28/1017:45
STN
-
PHL
2 stops27h 15m
Multiple Airlines
Sat 31/1018:30
PHL
-
STN
1 stop9h 10m
Multiple Airlines
Deal found 17/7£630
Sat 24/1006:15
STN
-
PHL
2 stops17h 40m
Multiple Airlines
Sat 31/1018:30
PHL
-
STN
1 stop9h 10m
Multiple Airlines
Deal found 17/7£632
Mon 14/907:05
STN
-
PHL
2 stops16h 50m
Multiple Airlines
Mon 12/1020:25
PHL
-
STN
1 stop11h 25m
Multiple Airlines
Deal found 17/7£638
Tue 20/1006:30
STN
-
PHL
2 stops17h 25m
Multiple Airlines
Tue 10/1117:30
PHL
-
STN
1 stop15h 35m
Multiple Airlines
Deal found 19/7£639
Wed 2/906:30
STN
-
PHL
1 stop17h 25m
Multiple Airlines
Wed 9/920:25
PHL
-
STN
1 stop10h 10m
Multiple Airlines
Deal found 19/7£646
Sun 20/907:00
STN
-
PHL
2 stops16h 55m
Multiple Airlines
Sun 27/915:25
PHL
-
STN
2 stops17h 15m
Multiple Airlines
Deal found 15/7£653
Fri 25/906:35
STN
-
PHL
2 stops21h 11m
Multiple Airlines
Fri 23/1020:25
PHL
-
STN
1 stop12h 50m
Multiple Airlines
Deal found 15/7£659

Find 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 20 July 2026.

Round-trip from

£605

One-way from

£340

Popular in

July

Cheapest in

September

Average price

£770
31/8-6/9
  • 31/8-6/9
  • 5 total stops
  • 46h 59m total
  • London to Philadelphia
Search Deals
7/9
  • 7/9
  • 2 total stops
  • 16h 50m total
  • London to Philadelphia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£63 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 20 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

Tue 1/9

22:00-22:46

3 stops29h 46m

Philadelphia

Tue 8/9

10:05-22:40

3 stops31h 35m

£680

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sat 29/8

06:35-18:55

1 stop17h 20m

Philadelphia

Sat 5/9

20:25-12:55

1 stop11h 30m

£686

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 11/8

06:30-18:55

1 stop17h 25m

Philadelphia

Tue 25/8

20:25-17:35

1 stop16h 10m

£695

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 26/8

06:30-21:34

3 stops20h 04m

Philadelphia

Mon 31/8

15:25-23:25

3 stops27h 00m

£711

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 7/9

07:05-18:55

2 stops16h 50m

Philadelphia

Mon 14/9

15:25-00:50

3 stops28h 25m

£725

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 22/10

13:15-18:55

2 stops34h 40m

Philadelphia

Sun 25/10

18:30-10:25

1 stop11h 55m

£731

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 12/8

19:10-21:34

3 stops31h 24m

Philadelphia

Tue 25/8

20:25-21:20

1 stop19h 55m

£731
Fastest return journey

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 9/11

06:35-16:00

1 stop14h 25m

Philadelphia

Mon 16/11

17:30-10:20

1 stop11h 50m

£767

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Wed 26/8

22:00-21:34

3 stops28h 34m

Philadelphia

Sun 30/8

20:25-12:55

1 stop11h 30m

£771

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sun 13/9

13:35-18:55

2 stops34h 20m

Philadelphia

Tue 15/9

10:05-22:40

3 stops31h 35m

£793

Flights are sorted by cheapest return flights first.

Deals found on 19/7

Showing 1-10 of 22 resultsSorted by cheapest first
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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.

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.

See more FAQs

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

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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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