Cheap flights from London to Pennsylvania from £298

LON — PHL
9 Dec — 16 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Pennsylvania

Enter your travel dates to find the best prices.

Cheapest flights from London to Pennsylvania

Mon 7/1206:00 -
2 stops21h 36m
Mon 14/1209:15 -
2 stops16h 55m
Deal found 8/11£596
Wed 25/1106:00 -
2 stops21h 36m
Wed 2/1209:15 -
2 stops30h 45m
Deal found 7/11£598
Sun 22/1106:00 -
2 stops21h 36m
Mon 7/1209:15 -
2 stops16h 55m
Deal found 7/11£600
Wed 18/1109:50 -
1 stop19h 45m
Thu 26/1105:05 -
2 stops20h 45m
Deal found 7/11£600
Fri 4/1206:45 -
1 stop14h 25m
Tue 8/1217:40 -
1 stop9h 35m
Deal found 9/11£602
Sun 27/1208:30 -
1 stop15h 50m
Tue 5/120:50 -
1 stop14h 00m
Deal found 4/11£602
Tue 24/1109:00 -
2 stops18h 36m
Tue 1/1209:15 -
2 stops30h 45m
Deal found 6/11£602
Wed 25/1120:40 -
2 stops24h 41m
Wed 2/1209:15 -
2 stops29h 45m
Deal found 7/11£603
Tue 24/1106:00 -
2 stops21h 36m
Tue 8/1217:05 -
2 stops33h 05m
Deal found 5/11£603
Wed 18/1109:50 -
2 stops28h 35m
Mon 7/1216:16 -
3 stops19h 04m
Deal found 6/11£603
Wed 2/1220:25 -
2 stops31h 44m
Wed 9/1212:01 -
3 stops23h 04m
Deal found 8/11£604
Tue 24/1106:50 -
2 stops12h 49m
Wed 25/1109:15 -
2 stops16h 55m
Deal found 7/11£606

Find flight deals from London to Pennsylvania

Round-trip from

£532

One-way from

£298

Popular in

August

Cheapest in

January

Average price

£689

Good round-trip deal

£617 or less

Good one-way deal

£487 or less
20/1-2/2
  • 20/1-2/2
  • 2 total stops
  • 67h 10m total
  • London to Pennsylvania
26/11-31/12
  • 26/11-31/12
  • 1 total stop
  • 18h 53m total
  • London to Pennsylvania
Highest demand for flights based on searches. 9% potential increase in price (£57 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in November 2026
Price to beat on a round-trip flight from London (LON) to Pennsylvania.
Price to beat on a one-way flight from London (LON) to Pennsylvania.

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London to Pennsylvania that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Tue 2/3

20:45-09:36

3 stops41h 51m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£318

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Thu 7/1

10:35-17:51

1 stop36h 16m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£322

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Thu 10/12

09:00-21:07

3 stops41h 07m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£335

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Wed 2/12

15:05-09:02

2 stops46h 57m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£349

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Sun 22/11

09:40-23:01

1 stop18h 21m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£373

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Thu 7/1

18:15-18:15

3 stops53h 00m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£374

LondonPittsburgh

LGW London Gatwick - PIT Pittsburgh

LGWPIT

London Gatwick

Thu 26/11

11:00-18:04

1 stop36h 04m

Pittsburgh

Wed 31/12

00:00-06:00

Nonstop0h 00m

£377

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Thu 10/12

15:55-09:04

2 stops46h 09m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£384

LondonPittsburgh

LHR London Heathrow - PIT Pittsburgh

LHRPIT

London Heathrow

Mon 15/2

06:00-20:35

2 stops19h 35m

Pittsburgh

Wed 31/12

00:00-06:00

Nonstop0h 00m

£453

LondonPittsburgh

LHR London Heathrow - PIT Pittsburgh

LHRPIT

London Heathrow

Thu 24/12

09:20-22:48

1 stop18h 28m

Pittsburgh

Wed 31/12

00:00-06:00

Nonstop0h 00m

£474

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from London to Pennsylvania

Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from London with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London to Pennsylvania

What is the cheapest month to book a flight from London to Pennsylvania?

Currently, January is the cheapest month in which you can book a flight from London to Pennsylvania (average of £600). Flying from London to Pennsylvania in August is currently the most expensive (average of £877). 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.

What is the cheapest time of day to fly from LON to PA?

When flying from London to Pennsylvania, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to Pennsylvania

The most flights from LON to USPA are scheduled on a Monday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost for a return flight from London to Pennsylvania?

Airfare is below average for this route at the moment.
London to Pennsylvania flights typically cost between £595 and £821 in December.
The cheapest return price found within the last 5 days was £594 on Air Canada (3 Dec–6 Dec).

How far ahead should I book a flight from London to Pennsylvania?

The best time to book flights from London to Pennsylvania is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Pennsylvania

See what other customers who have flown with Finnair,Aer Lingus, andJetBlue from London to Pennsylvania have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Related info for your journey

  • How long is the flight from London to Pennsylvania?

    Scandinavian Airlines, United Airlines, and TAP AIR PORTUGAL can get you from London to Pennsylvania in just under 16h 32m. Your travel time can differ by up to 10h 57m. London and Pennsylvania are separated by a distance of 3533 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from London to Pennsylvania one-way?

    To fly one-way, consider booking your trip with Condor, which is currently one of the cheapest options available, starting at £105. British Airways flights start at £331 while deals on Air India start at £393 one-way.

  • What are the most popular routes from London to Pennsylvania?

  • What are the most reliable airlines from London to Pennsylvania?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Pennsylvania on time: Malaysia Airlines (86%), Finnair (71%), Iberia (71%).

  • What are the cheapest flights from London to Pennsylvania?

    Looking at all options, your cheapest flight can be booked for £433. While the most popular route (London Heathrow - New York John F Kennedy Intl) can be booked for £377 on average, our data indicates £731 when flying from London to Pennsylvania.

  • Can I find deals for flights from London to Pennsylvania that include hotel bookings?

    Yes. In addition to deals on London to Pennsylvania flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Pennsylvania?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Pennsylvania.

  • Can I find deals for business class flights from London to Pennsylvania?

    Yes. Cheapflights offers flight deals from London to Pennsylvania 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 to Pennsylvania?

    Currently, January is the cheapest month in which you can book a flight from London to Pennsylvania (average of £600). Flying from London to Pennsylvania in August is currently the most expensive (average of £877). 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

Alternative routes for London to Pennsylvania

Top 10 airlines flying from London to Pennsylvania

AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£256Average£301FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£421Average£587FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£450Average£733FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£455Average£797FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£466Average£767FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£494Average£823FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£494Average£736FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£557Average£667FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£584Average£695FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£591Average£763FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Pennsylvania?

Cheapflights helps you search for flights from London to Pennsylvania via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to Pennsylvania?

Cheapflights helps you find that perfect flight to Pennsylvania from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Pennsylvania with no change fees?

Yes, we can. To see specific flights from London to Pennsylvania 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 London to Pennsylvania become cheaper?

Yes! Start tracking prices for London to Pennsylvania flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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