Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London Stansted Airport to Philadelphia from £436

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 30/8. 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
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London Stansted Airport to Philadelphia

Cheap return flights

Logo
06:25 - 19:00STN-PHL
17h 35m1 stop
Logo
10:20 - 15:20PHL-STN
24h 00m2 stops
£520
Find Deal
Mon, 8 Sep - Mon, 22 Sep
Logo
06:35 - 19:00STN-PHL
17h 25m1 stop
Logo
10:20 - 07:45PHL-STN
16h 25m2 stops
£522
Find Deal
Sat, 13 Sep - Sat, 27 Sep
Logo
06:40 - 19:00STN-PHL
17h 20m1 stop
Logo
20:30 - 17:05PHL-STN
15h 35m1 stop
£525
Find Deal
Fri, 5 Sep - Fri, 19 Sep
Logo
12:15 - 19:00STN-PHL
11h 45m1 stop
Logo
18:10 - 12:55PHL-STN
13h 45m2 stops
£526
Find Deal
Tue, 9 Sep - Sun, 14 Sep
Logo
11:15 - 19:00STN-PHL
12h 45m1 stop
Logo
20:30 - 18:10PHL-STN
16h 40m1 stop
£527
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Logo
06:40 - 21:50STN-PHL
20h 10m2 stops
Logo
20:30 - 16:35PHL-STN
15h 05m1 stop
£528
Find Deal
Fri, 19 Sep - Fri, 3 Oct
Logo
12:25 - 19:00STN-PHL
11h 35m1 stop
Logo
10:20 - 14:20PHL-STN
23h 00m2 stops
£529
Find Deal
Fri, 12 Sep - Fri, 26 Sep
Logo
10:35 - 19:00STN-PHL
13h 25m1 stop
Logo
10:20 - 07:45PHL-STN
16h 25m2 stops
£531
Find Deal
Wed, 3 Sep - Sat, 6 Sep
Logo
06:25 - 19:00STN-PHL
17h 35m1 stop
Logo
20:30 - 10:50PHL-STN
9h 20m1 stop
£532
Find Deal
Mon, 8 Sep - Mon, 22 Sep
Logo
06:40 - 17:45STN-PHL
16h 05m2 stops
Logo
20:30 - 16:35PHL-STN
15h 05m1 stop
£533
Find Deal
Fri, 5 Sep - Fri, 19 Sep

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 21 August 2025.
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

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 8/9

06:25-19:00

1 stop17h 35m

Philadelphia

Mon 22/9

10:20-15:20

2 stops24h 00m

£520

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

£522

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 5/9

06:40-19:00

1 stop17h 20m

Philadelphia

Fri 19/9

20:30-17:05

1 stop15h 35m

£525

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 9/9

12:15-19:00

1 stop11h 45m

Philadelphia

Sun 14/9

18:10-12:55

2 stops13h 45m

£526

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 23/9

11:15-19:00

1 stop12h 45m

Philadelphia

Tue 30/9

20:30-18:10

1 stop16h 40m

£527

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

£528

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

£529

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

£531

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 8/9

06:25-19:00

1 stop17h 35m

Philadelphia

Mon 22/9

20:30-10:50

1 stop9h 20m

£532

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 5/9

06:40-17:45

2 stops16h 05m

Philadelphia

Fri 19/9

20:30-16:35

1 stop15h 05m

£533

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 £596. 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 £657.

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 afternoon when flights can be purchased for as low as £499. At midday is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £626 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

Direct flights

None
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

  • 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 35m.

  • 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
Dover
Newark
Reading
Vineland
King of Prussia
Cape May
Essington
Rehoboth Beach
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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 26/8
Tue 2/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States