How does KAYAK find such low prices on flights from Pennsylvania to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Pennsylvania to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to Pennsylvania with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

£139 CHEAP FLIGHTS from Pennsylvania to London

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Pennsylvania to London

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Direct

Recent return flight deals from Pennsylvania to London

Sun, 15 Nov - Wed, 18 Nov

17:35 - 08:55JFK New York John F Kennedy Intl-LHR London Heathrow

34h 20m2 stops Kastrup Copenhagen Stockholm Arlanda

06:40 - 15:45LHR London Heathrow-JFK New York John F Kennedy Intl

14h 05m1 stop Kastrup Copenhagen

£392Scandinavian Airlines

Fri, 13 Nov - Mon, 16 Nov

17:35 - 19:55JFK New York John F Kennedy Intl-LHR London Heathrow

45h 20m2 stops Kastrup Copenhagen Stockholm Arlanda

17:00 - 15:45LHR London Heathrow-JFK New York John F Kennedy Intl

27h 45m1 stop Kastrup Copenhagen

£392Scandinavian Airlines

Fri, 25 Sep - Fri, 2 Oct

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£392Norse Atlantic UK

Thu, 1 Oct - Tue, 6 Oct

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£393Norse Atlantic UK

Fri, 6 Nov - Fri, 13 Nov

19:05 - 07:05JFK New York John F Kennedy Intl-LHR London Heathrow

7h 00mdirect

08:20 - 11:20LHR London Heathrow-JFK New York John F Kennedy Intl

8h 00mdirect

£431British Airways

Fri, 13 Nov - Wed, 18 Nov

19:05 - 07:05JFK New York John F Kennedy Intl-LHR London Heathrow

7h 00mdirect

08:20 - 11:20LHR London Heathrow-JFK New York John F Kennedy Intl

8h 00mdirect

£431British Airways

Tue, 20 Oct - Tue, 27 Oct

20:30 - 11:55IAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 25m1 stop Reykjavik Keflavik Intl

20:35 - 19:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

£479Icelandair

Wed, 3 Feb - Sun, 7 Feb

19:40 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

12:15 - 18:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 15m1 stop Reykjavik Keflavik Intl

£481Icelandair

Fri, 16 Oct - Sun, 18 Oct

16:40 - 10:45JFK New York John F Kennedy Intl-LHR London Heathrow

13h 05m1 stop Amsterdam Schiphol

08:20 - 11:30LHR London Heathrow-JFK New York John F Kennedy Intl

8h 10mdirect

£490Virgin Atlantic

Fri, 25 Sep - Sun, 27 Sep

23:55 - 12:05JFK New York John F Kennedy Intl-LHR London Heathrow

7h 10mdirect

11:45 - 17:05LHR London Heathrow-JFK New York John F Kennedy Intl

10h 20m1 stop Amsterdam Schiphol

£521Virgin Atlantic

Recent last minute flight deals from Pennsylvania to London

Sat, 22 Aug - Thu, 10 Sep

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£467Norse Atlantic UK

Sun, 23 Aug - Sat, 19 Sep

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£467Norse Atlantic UK

Wed, 19 Aug - Wed, 6 Jan

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

19:55 - 16:50LGW London Gatwick-JFK New York John F Kennedy Intl

25h 55m2 stops Berlin Brandenburg Dublin

£496Multiple Airlines

Wed, 19 Aug - Thu, 5 Nov

01:00 - 16:00JFK New York John F Kennedy Intl-LGW London Gatwick

10h 00m1 stop Paris Charles de Gaulle

20:00 - 19:25LGW London Gatwick-JFK New York John F Kennedy Intl

28h 25m2 stops Berlin Brandenburg Dublin

£508Multiple Airlines

Sun, 23 Aug - Tue, 25 Aug

06:30 - 10:00LGA New York LaGuardia-LHR London Heathrow

22h 30m1 stop Montreal Pierre Elliott Trudeau Intl

07:25 - 23:30LHR London Heathrow-LGA New York LaGuardia

21h 05m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

£512United Airlines

Fri, 21 Aug - Sun, 23 Aug

17:35 - 10:00LGA New York LaGuardia-LHR London Heathrow

11h 25m1 stop Montreal Pierre Elliott Trudeau Intl

06:50 - 23:30LHR London Heathrow-LGA New York LaGuardia

21h 40m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

£513United Airlines

Sun, 23 Aug - Sat, 29 Aug

22:00 - 10:20JFK New York John F Kennedy Intl-LHR London Heathrow

7h 20mdirect

16:20 - 19:40LHR London Heathrow-JFK New York John F Kennedy Intl

8h 20mdirect

£535Virgin Atlantic

Sun, 23 Aug - Mon, 24 Aug

22:00 - 10:20JFK New York John F Kennedy Intl-LHR London Heathrow

7h 20mdirect

20:55 - 14:35LHR London Heathrow-JFK New York John F Kennedy Intl

22h 40m1 stop Amsterdam Schiphol

£537KLM

Sun, 23 Aug - Sat, 29 Aug

22:00 - 10:20JFK New York John F Kennedy Intl-LHR London Heathrow

7h 20mdirect

09:40 - 18:42LHR London Heathrow-JFK New York John F Kennedy Intl

14h 02m1 stop Boston Logan Intl

£539Virgin Atlantic

Wed, 19 Aug - Wed, 26 Aug

18:00 - 06:20JFK New York John F Kennedy Intl-LHR London Heathrow

7h 20mdirect

11:45 - 17:05LHR London Heathrow-JFK New York John F Kennedy Intl

10h 20m1 stop Amsterdam Schiphol

£581KLM

Recent direct flight deals from Pennsylvania to London

Fri, 25 Sep - Fri, 2 Oct

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£392Norse Atlantic UK

Thu, 1 Oct - Tue, 6 Oct

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£393Norse Atlantic UK

Tue, 29 Sep - Thu, 1 Oct

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£400A.P.G.

Sat, 3 Oct - Thu, 8 Oct

18:20 - 06:20JFK New York John F Kennedy Intl-LGW London Gatwick

7h 00mdirect

13:05 - 15:55LGW London Gatwick-JFK New York John F Kennedy Intl

7h 50mdirect

£401Hahn Air

Fri, 13 Nov - Wed, 18 Nov

19:05 - 07:05JFK New York John F Kennedy Intl-LHR London Heathrow

7h 00mdirect

08:20 - 11:20LHR London Heathrow-JFK New York John F Kennedy Intl

8h 00mdirect

£431British Airways

Fri, 6 Nov - Fri, 13 Nov

19:05 - 07:05JFK New York John F Kennedy Intl-LHR London Heathrow

7h 00mdirect

08:20 - 11:20LHR London Heathrow-JFK New York John F Kennedy Intl

8h 00mdirect

£431British Airways

Mon, 19 Oct - Sat, 31 Oct

08:15 - 20:10JFK New York John F Kennedy Intl-LHR London Heathrow

6h 55mdirect

10:10 - 14:27LHR London Heathrow-JFK New York John F Kennedy Intl

8h 17mdirect

£533Virgin Atlantic

Thu, 17 Sep - Thu, 24 Sep

19:00 - 07:15JFK New York John F Kennedy Intl-LHR London Heathrow

7h 15mdirect

20:05 - 22:50LHR London Heathrow-JFK New York John F Kennedy Intl

7h 45mdirect

£535Virgin Atlantic

Wed, 28 Oct - Tue, 3 Nov

22:35 - 09:30EWR Newark-LHR London Heathrow

6h 55mdirect

10:40 - 13:50LHR London Heathrow-EWR Newark

8h 10mdirect

£542Iberia

Wed, 28 Oct - Tue, 3 Nov

21:05 - 08:10JFK New York John F Kennedy Intl-LHR London Heathrow

7h 05mdirect

12:55 - 16:00LHR London Heathrow-JFK New York John F Kennedy Intl

8h 05mdirect

£542Iberia

Useful Info

Low season	February
High season	March

Best time to beat the crowds (10% less expensive on average)

Most popular time to fly and prices are also 21% lower on average.

Verified travelerFlew with American Airlines-Jun 2025

Make sure you do not need the transit visa.

LisaFlew with British Airways-May 2025

Make sure you have enough time in London if you have a transfer flight. I would recommend at least 2 hours.

RadicalFlew with American Airlines-May 2025

Don’t put everything in your gate check bags. Make sure you have clothes in your carry on

Verified travelerFlew with British Airways-Oct 2024

Eat well before boarding if you’re a picky eater.

GlennFlew with British Airways-Jun 2024

British airways could have many delays, ensure there's enough time for the layover

Verified travelerFlew with British Airways-Mar 2024

Go British Air. The nonstop flight is a huge bonus as there are very few such flights to Europe from Pittsburgh. Study the Underground and use it for transportation while there. After you’ve seen the most famous London sights, visit one of the smaller museums, like the John Soames Museum or the Leighton House Museum. Have a drink at the bar on the top floor of the National Portrait Gallery.

How does KAYAK find such low prices on flights from Pennsylvania to London?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Pennsylvania to London?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to Pennsylvania with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to London?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Gatwick

Milton Keynes

Eastbourne

Hounslow

Luton

Southend-on-Sea

Winchester

Slough

Folkestone

Stansted

Croydon

Newport

Colchester

Chichester

Maidstone

Crawley

Chelmsford

Hastings

Bedford

Richmond

Everything you need to know for your flight to London

Cabin class

Complete your trip

Direct flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to Pennsylvania

First Class flights to London

Business Class flights to Londonfrom £3,495

Premium Economy Class flights to Londonfrom £1,642

Economy class flights to Londonfrom £662

£139 Find Cheap Flights from Pennsylvania to London – Compare and Save

Cheap Flights from Pennsylvania to London

Recent return flight deals from Pennsylvania to London

Recent one-way flight deals from Pennsylvania to London

Recent last minute flight deals from Pennsylvania to London

Recent direct flight deals from Pennsylvania to London

Good to know - Cheap tickets from Pennsylvania to London

Low season

High season

Flights from Pennsylvania to London: the best tips from KAYAK users

FAQs for booking flights from Pennsylvania to London

Travelling to a place near London?

Everything you need to know for your flight to London

Cabin class types available on flights to Pennsylvania

Complete your trip to London with a hotel stay or car hire

Find direct flights for London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

Find deals for your return flight