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Cheap flights from London Stansted Airport to Philadelphia from £364

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 6/1. 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
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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 - 16:00STN-PHL
14h 30m1 stop
Multiple Airlines Logo
06:00 - 07:50PHL-STN
20h 50m2 stops
£482Multiple Airlines
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Thu, 20 Nov - Thu, 27 Nov
Multiple Airlines Logo
06:30 - 17:00STN-PHL
14h 30m1 stop
Multiple Airlines Logo
17:30 - 09:50PHL-STN
11h 20m1 stop
£497Multiple Airlines
Find Deal
Thu, 30 Oct - Wed, 5 Nov
Multiple Airlines Logo
12:00 - 23:35STN-PHL
16h 35m2 stops
Multiple Airlines Logo
17:30 - 09:50PHL-STN
11h 20m1 stop
£499Multiple Airlines
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Sat, 22 Nov - Sat, 29 Nov
Multiple Airlines Logo
05:55 - 16:05STN-PHL
15h 10m2 stops
Multiple Airlines Logo
17:40 - 19:45PHL-STN
21h 05m2 stops
£505Multiple Airlines
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Thu, 20 Nov - Thu, 27 Nov
Multiple Airlines Logo
13:35 - 14:47STN-PHL
30h 12m3 stops
Multiple Airlines Logo
15:30 - 23:10PHL-STN
26h 40m3 stops
£510Multiple Airlines
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Thu, 20 Nov - Thu, 27 Nov
Multiple Airlines Logo
13:35 - 16:05STN-PHL
31h 30m2 stops
Multiple Airlines Logo
15:30 - 23:55PHL-STN
27h 25m3 stops
£533Multiple Airlines
Find Deal
Mon, 3 Nov - Mon, 10 Nov
Multiple Airlines Logo
13:35 - 16:05STN-PHL
31h 30m2 stops
Multiple Airlines Logo
15:30 - 23:55PHL-STN
27h 25m3 stops
£533Multiple Airlines
Find Deal
Mon, 3 Nov - Mon, 10 Nov
Multiple Airlines Logo
09:20 - 19:00STN-PHL
14h 40m1 stop
Multiple Airlines Logo
18:30 - 18:20PHL-STN
19h 50m1 stop
£535Multiple Airlines
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Thu, 23 Oct - Mon, 27 Oct
Multiple Airlines Logo
15:00 - 14:47STN-PHL
28h 47m3 stops
Multiple Airlines Logo
15:30 - 19:45PHL-STN
23h 15m2 stops
£538Multiple Airlines
Find Deal
Fri, 21 Nov - Fri, 28 Nov
Multiple Airlines Logo
15:00 - 14:47STN-PHL
28h 47m3 stops
Multiple Airlines Logo
15:30 - 19:45PHL-STN
23h 15m2 stops
£539Multiple Airlines
Find Deal
Fri, 21 Nov - Fri, 28 Nov

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 8 October 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

Thu 20/11

06:30-16:00

1 stop14h 30m

Philadelphia

Thu 27/11

06:00-07:50

2 stops20h 50m

£482

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 30/10

06:30-17:00

1 stop14h 30m

Philadelphia

Wed 5/11

17:30-09:50

1 stop11h 20m

£497

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sat 22/11

12:00-23:35

2 stops16h 35m

Philadelphia

Sat 29/11

17:30-09:50

1 stop11h 20m

£499

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 20/11

05:55-16:05

2 stops15h 10m

Philadelphia

Thu 27/11

17:40-19:45

2 stops21h 05m

£505

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 20/11

13:35-14:47

3 stops30h 12m

Philadelphia

Thu 27/11

15:30-23:10

3 stops26h 40m

£510

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 3/11

13:35-16:05

2 stops31h 30m

Philadelphia

Mon 10/11

15:30-23:55

3 stops27h 25m

£533

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 3/11

13:35-16:05

2 stops31h 30m

Philadelphia

Mon 10/11

15:30-23:55

3 stops27h 25m

£533

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 23/10

09:20-19:00

1 stop14h 40m

Philadelphia

Mon 27/10

18:30-18:20

1 stop19h 50m

£535

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 21/11

15:00-14:47

3 stops28h 47m

Philadelphia

Fri 28/11

15:30-19:45

2 stops23h 15m

£538

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Fri 21/11

15:00-14:47

3 stops28h 47m

Philadelphia

Fri 28/11

15:30-19:45

2 stops23h 15m

£539

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 £605. 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 £666.

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 £500. At midday is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £637 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.
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  • 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 10h 30m.

  • 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
Newark
Dover
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.

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