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Cheap flights from Philadelphia to London from £233

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 4/12. 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 Philadelphia to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
17:30 - 07:50PHL-STN
9h 20m1 stop
Multiple Airlines Logo
06:30 - 16:00STN-PHL
14h 30m1 stop
£437Multiple Airlines
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Thu, 4 Dec - Thu, 11 Dec
Multiple Airlines Logo
15:30 - 22:40PHL-STN
26h 10m2 stops
Multiple Airlines Logo
08:05 - 14:47STN-PHL
35h 42m2 stops
£445Multiple Airlines
Find Deal
Wed, 14 Jan - Wed, 21 Jan
Multiple Airlines Logo
15:30 - 22:40PHL-STN
26h 10m2 stops
Multiple Airlines Logo
08:05 - 22:46STN-PHL
19h 41m3 stops
£450Multiple Airlines
Find Deal
Wed, 14 Jan - Wed, 21 Jan
Multiple Airlines Logo
16:35 - 14:50PHL-STN
17h 15m2 stops
Multiple Airlines Logo
21:45 - 14:47STN-PHL
22h 02m3 stops
£455Multiple Airlines
Find Deal
Fri, 16 Jan - Mon, 19 Jan
Multiple Airlines Logo
16:35 - 18:20PHL-STN
20h 45m2 stops
Multiple Airlines Logo
21:45 - 15:49STN-PHL
23h 04m2 stops
£457Multiple Airlines
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Fri, 5 Dec - Tue, 9 Dec
Multiple Airlines Logo
16:35 - 16:35PHL-STN
19h 00m2 stops
Multiple Airlines Logo
18:15 - 14:47STN-PHL
25h 32m3 stops
£462Multiple Airlines
Find Deal
Fri, 9 Jan - Thu, 15 Jan
Multiple Airlines Logo
16:35 - 16:35PHL-STN
19h 00m2 stops
Multiple Airlines Logo
19:45 - 15:49STN-PHL
25h 04m2 stops
£463Multiple Airlines
Find Deal
Fri, 9 Jan - Thu, 15 Jan
Multiple Airlines Logo
15:30 - 15:05PHL-STN
18h 35m3 stops
Multiple Airlines Logo
21:45 - 14:47STN-PHL
22h 02m3 stops
£464Multiple Airlines
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Wed, 7 Jan - Wed, 14 Jan
Multiple Airlines Logo
09:20 - 11:05PHL-STN
20h 45m2 stops
Multiple Airlines Logo
21:45 - 22:46STN-PHL
30h 01m3 stops
£465Multiple Airlines
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Sun, 23 Nov - Wed, 3 Dec
Multiple Airlines Logo
17:30 - 07:50PHL-STN
9h 20m1 stop
Multiple Airlines Logo
08:30 - 16:00STN-PHL
12h 30m1 stop
£469Multiple Airlines
Find Deal
Thu, 11 Dec - Mon, 15 Dec

momondo Fare Finder

 
Customise your flight search to find flights from Philadelphia to London Stansted Airport 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 7 November 2025.
Use the filters below to find and compare flights from Philadelphia to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Thu 4/12

17:30-07:50

1 stop9h 20m

London Stansted

Thu 11/12

06:30-16:00

1 stop14h 30m

£437

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Wed 14/1

15:30-22:40

2 stops26h 10m

London Stansted

Wed 21/1

08:05-14:47

2 stops35h 42m

£445

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Wed 14/1

15:30-22:40

2 stops26h 10m

London Stansted

Wed 21/1

08:05-22:46

3 stops19h 41m

£450

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Fri 16/1

16:35-14:50

2 stops17h 15m

London Stansted

Mon 19/1

21:45-14:47

3 stops22h 02m

£455

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Fri 5/12

16:35-18:20

2 stops20h 45m

London Stansted

Tue 9/12

21:45-15:49

2 stops23h 04m

£457

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Fri 9/1

16:35-16:35

2 stops19h 00m

London Stansted

Thu 15/1

18:15-14:47

3 stops25h 32m

£462

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Fri 9/1

16:35-16:35

2 stops19h 00m

London Stansted

Thu 15/1

19:45-15:49

2 stops25h 04m

£463

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Wed 7/1

15:30-15:05

3 stops18h 35m

London Stansted

Wed 14/1

21:45-14:47

3 stops22h 02m

£464

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Sun 23/11

09:20-11:05

2 stops20h 45m

London Stansted

Wed 3/12

21:45-22:46

3 stops30h 01m

£465

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Thu 11/12

17:30-07:50

1 stop9h 20m

London Stansted

Mon 15/12

08:30-16:00

1 stop12h 30m

£469

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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When to book flights from Philadelphia to London Stansted Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to London Stansted Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Philadelphia to London Stansted Airport (PHL to STN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to London Stansted Airport

Direct flights

None
There are no direct flights from Philadelphia to London Stansted Airport. There are no popular flight routes from Philadelphia to London Stansted Airport.
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  • How far is Philadelphia to London Stansted by plane?

    A flight from Philadelphia to London Stansted will travel around 3545.2 mi. 9h 20m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Philadelphia Airport to London Stansted Airport?

    Prices for flights from Philadelphia Airport to London Stansted Airport are updated daily.

  • How old do you have to be to fly from Philadelphia Airport to London Stansted Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to London Stansted Airport.

  • What documentation or ID do you need to fly to London Stansted Airport?

    The required travel and health documents for your London Stansted 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 London Stansted Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Philadelphia to London Stansted Airport?

    Confirm your travel details to search for the latest offers for flights from Philadelphia to London Stansted Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Philadelphia to London Stansted Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Dover
Colchester
Chelmsford
Hayes
Worthing
Ramsgate
Dartford
Bedford
Winchester

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to London. momondo saves you time and could save you money on your trip.

Can I find flights from Philadelphia to London with flexible booking policies on momondo?

Yes. All flights to London from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Philadelphia to London?

Once you have performed a search for Philadelphia to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Philadelphia to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Stansted Airport trip

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