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

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 Heathrow Airport.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport 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 Heathrow Airport?

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 Heathrow Airport from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$206 CHEAP FLIGHTS from Pennsylvania to London Heathrow (LHR)

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Cheap Flights from Pennsylvania to London

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

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Pennsylvania to London

Sat, Oct 17 - Sun, Oct 18

5:10 pm - 9:35 amJFK New York John F Kennedy Intl-LHR London Heathrow

11h 25m1 stop Oslo Gardermoen

9:05 pm - 3:40 pmLHR London Heathrow-JFK New York John F Kennedy Intl

23h 35m2 stops Stockholm Arlanda Oslo Gardermoen

$529Scandinavian Airlines

Sat, Oct 10 - Mon, Oct 12

5:10 pm - 9:35 pmJFK New York John F Kennedy Intl-LHR London Heathrow

23h 25m1 stop Oslo Gardermoen

9:05 pm - 3:40 pmLHR London Heathrow-JFK New York John F Kennedy Intl

23h 35m2 stops Stockholm Arlanda Oslo Gardermoen

$529Scandinavian Airlines

Fri, Oct 9 - Wed, Oct 21

11:55 pm - 4:00 pmJFK New York John F Kennedy Intl-LHR London Heathrow

11h 05m1 stop Dublin

8:45 am - 10:25 pmLHR London Heathrow-JFK New York John F Kennedy Intl

18h 40m2 stops Hamburg Dublin

$540Multiple Airlines

Wed, Oct 21 - Mon, Oct 26

2:30 pm - 6:35 amLGA New York LaGuardia-LHR London Heathrow

11h 05m1 stop Toronto Pearson Intl

1:00 pm - 9:31 pmLHR London Heathrow-LGA New York LaGuardia

12h 31m1 stop Montreal Pierre Elliott Trudeau Intl

$545Air Canada

Thu, Oct 29 - Thu, Nov 5

8:25 pm - 10:50 amJFK New York John F Kennedy Intl-LHR London Heathrow

10h 25m1 stop Reykjavik Keflavik Intl

6:00 am - 4:50 pmLHR London Heathrow-JFK New York John F Kennedy Intl

15h 50m2 stops Zurich Dublin

$553Multiple Airlines

Sun, Dec 6 - Sun, Dec 20

6:50 pm - 11:20 amLGA New York LaGuardia-LHR London Heathrow

11h 30m1 stop Toronto Pearson Intl

1:00 pm - 7:06 pmLHR London Heathrow-LGA New York LaGuardia

11h 06m1 stop Montreal Pierre Elliott Trudeau Intl

$557Air Canada

Mon, Oct 19 - Sat, Oct 31

8:30 pm - 8:20 pmJFK New York John F Kennedy Intl-LHR London Heathrow

18h 50m1 stop Reykjavik Keflavik Intl

12:15 pm - 7:00 pmLHR London Heathrow-JFK New York John F Kennedy Intl

10h 45m1 stop Reykjavik Keflavik Intl

$577Icelandair

Tue, Dec 1 - Tue, Dec 29

7:25 pm - 10:50 amJFK New York John F Kennedy Intl-LHR London Heathrow

10h 25m1 stop Reykjavik Keflavik Intl

12:15 pm - 5:40 pmLHR London Heathrow-JFK New York John F Kennedy Intl

10h 25m1 stop Reykjavik Keflavik Intl

$579Icelandair

Sat, Dec 5 - Mon, Dec 21

8:40 pm - 8:35 amJFK New York John F Kennedy Intl-LHR London Heathrow

6h 55mnonstop

8:20 am - 11:20 amLHR London Heathrow-JFK New York John F Kennedy Intl

8h 00mnonstop

$589British Airways

Tue, Oct 6 - Sat, Oct 17

7:10 pm - 7:20 amJFK New York John F Kennedy Intl-LHR London Heathrow

7h 10mnonstop

8:20 am - 11:10 amLHR London Heathrow-JFK New York John F Kennedy Intl

7h 50mnonstop

$604British Airways

Recent last minute flight deals from Pennsylvania to London

Tue, Aug 18 - Thu, Aug 20

4:15 pm - 7:55 amJFK New York John F Kennedy Intl-LHR London Heathrow

10h 40m1 stop Zurich

6:50 am - 1:00 pmLHR London Heathrow-JFK New York John F Kennedy Intl

11h 10m1 stop Brussels Bruxelles-National

$654Multiple Airlines

Mon, Aug 17 - Wed, Aug 19

4:15 pm - 7:55 amJFK New York John F Kennedy Intl-LHR London Heathrow

10h 40m1 stop Zurich

6:50 am - 1:00 pmLHR London Heathrow-JFK New York John F Kennedy Intl

11h 10m1 stop Brussels Bruxelles-National

$654Multiple Airlines

Mon, Aug 17 - Wed, Aug 19

5:35 pm - 10:00 amLGA New York LaGuardia-LHR London Heathrow

11h 25m1 stop Montreal Pierre Elliott Trudeau Intl

6:50 am - 5:25 pmLHR London Heathrow-LGA New York LaGuardia

15h 35m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$694United Airlines

Tue, Aug 18 - Thu, Aug 20

8:45 am - 10:00 amLGA New York LaGuardia-LHR London Heathrow

20h 15m1 stop Montreal Pierre Elliott Trudeau Intl

6:50 am - 6:45 pmLHR London Heathrow-LGA New York LaGuardia

16h 55m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

$694United Airlines

Mon, Aug 17 - Wed, Aug 19

3:30 pm - 10:15 amLGA New York LaGuardia-LHR London Heathrow

13h 45m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National

9:30 am - 4:57 pmLHR London Heathrow-LGA New York LaGuardia

12h 27m1 stop Montreal Pierre Elliott Trudeau Intl

$709Air Canada

Sun, Aug 16 - Mon, Oct 19

10:35 pm - 5:45 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 10m1 stop Lisbon Humberto Delgado

7:50 pm - 3:10 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

24h 20m1 stop Lisbon Humberto Delgado

$711TAP AIR PORTUGAL

Mon, Aug 17 - Thu, Sep 17

10:35 pm - 5:45 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 10m1 stop Lisbon Humberto Delgado

7:50 pm - 2:25 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

23h 35m1 stop Lisbon Humberto Delgado

$711TAP AIR PORTUGAL

Mon, Aug 17 - Wed, Aug 19

4:15 pm - 11:20 amJFK New York John F Kennedy Intl-LHR London Heathrow

14h 05m1 stop Zurich

7:00 am - 2:20 pmLHR London Heathrow-JFK New York John F Kennedy Intl

12h 20m1 stop Geneva Geneve-Cointrin

$716SWISS

Mon, Aug 17 - Wed, Aug 19

4:15 pm - 7:55 amJFK New York John F Kennedy Intl-LHR London Heathrow

10h 40m1 stop Zurich

7:00 am - 2:20 pmLHR London Heathrow-JFK New York John F Kennedy Intl

12h 20m1 stop Geneva Geneve-Cointrin

$724SWISS

Mon, Aug 17 - Wed, Aug 26

5:35 pm - 10:00 amLGA New York LaGuardia-LHR London Heathrow

11h 25m1 stop Montreal Pierre Elliott Trudeau Intl

9:30 am - 2:37 pmLHR London Heathrow-LGA New York LaGuardia

10h 07m1 stop Montreal Pierre Elliott Trudeau Intl

$777Air Canada

Recent direct flight deals from Pennsylvania to London

Sat, Dec 5 - Mon, Dec 21

8:40 pm - 8:35 amJFK New York John F Kennedy Intl-LHR London Heathrow

6h 55mnonstop

8:20 am - 11:20 amLHR London Heathrow-JFK New York John F Kennedy Intl

8h 00mnonstop

$589British Airways

Tue, Oct 6 - Sat, Oct 17

7:10 pm - 7:20 amJFK New York John F Kennedy Intl-LHR London Heathrow

7h 10mnonstop

8:20 am - 11:10 amLHR London Heathrow-JFK New York John F Kennedy Intl

7h 50mnonstop

$604British Airways

Mon, Oct 19 - Sat, Oct 31

8:15 am - 8:10 pmJFK New York John F Kennedy Intl-LHR London Heathrow

6h 55mnonstop

10:10 am - 2:27 pmLHR London Heathrow-JFK New York John F Kennedy Intl

8h 17mnonstop

$722Virgin Atlantic

Thu, Oct 15 - Thu, Oct 29

8:15 pm - 8:50 amJFK New York John F Kennedy Intl-LHR London Heathrow

7h 35mnonstop

3:50 pm - 8:10 pmLHR London Heathrow-JFK New York John F Kennedy Intl

8h 20mnonstop

$722Virgin Atlantic

Thu, Oct 15 - Thu, Oct 29

5:50 pm - 5:50 amEWR Newark-LHR London Heathrow

7h 00mnonstop

4:25 pm - 8:35 pmLHR London Heathrow-EWR Newark

8h 10mnonstop

$730Iberia

Sat, Nov 14 - Wed, Nov 18

9:35 pm - 9:30 amEWR Newark-LHR London Heathrow

6h 55mnonstop

4:25 pm - 7:35 pmLHR London Heathrow-EWR Newark

8h 10mnonstop

$731Iberia

Sun, Sep 6 - Wed, Sep 23

9:25 pm - 9:30 amEWR Newark-LHR London Heathrow

7h 05mnonstop

7:45 am - 10:30 amLHR London Heathrow-EWR Newark

7h 45mnonstop

$731Multiple Airlines

Sun, Sep 6 - Wed, Sep 23

5:50 pm - 5:50 amEWR Newark-LHR London Heathrow

7h 00mnonstop

4:00 pm - 7:20 pmLHR London Heathrow-EWR Newark

8h 20mnonstop

$747Multiple Airlines

Sat, Sep 26 - Fri, Oct 2

7:15 pm - 7:20 amJFK New York John F Kennedy Intl-LHR London Heathrow

7h 05mnonstop

6:05 pm - 9:05 pmLHR London Heathrow-JFK New York John F Kennedy Intl

8h 00mnonstop

$753Finnair

Sat, Sep 26 - Sat, Oct 3

9:25 pm - 9:30 amEWR Newark-LHR London Heathrow

7h 05mnonstop

4:35 pm - 7:25 pmLHR London Heathrow-EWR Newark

7h 50mnonstop

$756Finnair

Useful Info

Low season	January
High season	July
Cheapest flight	$206

Best time to beat the crowds with an average 21% drop in price.

Most popular time to fly with an average 30% increase in price.

Flight from New York LaGuardia Airport to London Heathrow Airport

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 Heathrow Airport?
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 Heathrow Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to London Heathrow Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport 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 Heathrow Airport?
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 Heathrow Airport from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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$206 Find Cheap Flights from Pennsylvania to London Heathrow Airport - Compare and Save

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