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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$165 CHEAP FLIGHTS from Pennsylvania to London Heathrow (LHR)

LHR

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Cheap Flights from Pennsylvania to Heathrow

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 Heathrow

Thu, Sep 24 - Mon, Oct 5

10:05 pm - 6:50 pm

JFK

LHR

15h 45m

1 stop

11:20 am - 8:05 pm

LHR

JFK

13h 45m

1 stop

$627TAP AIR PORTUGAL

Tue, Sep 1 - Sun, Dec 20

8:30 pm - 11:55 am

JFK

LHR

10h 25m

1 stop

8:35 pm - 5:40 pm

LHR

JFK

26h 05m

1 stop

$630Icelandair

Tue, Aug 25 - Thu, Aug 27

10:40 am - 10:00 am

LGA

LHR

18h 20m

1 stop

6:50 am - 3:50 pm

LHR

LGA

14h 00m

2 stops

$670Air Canada

Thu, Aug 6 - Tue, Aug 25

5:35 pm - 6:30 am

LGA

LHR

31h 55m

1 stop

7:40 am - 6:10 pm

LHR

LGA

15h 30m

2 stops

$674Multiple Airlines

Sat, Aug 22 - Sat, Aug 29

6:30 am - 6:30 am

LGA

LHR

19h 00m

1 stop

7:40 am - 6:10 pm

LHR

LGA

15h 30m

2 stops

$675Multiple Airlines

Fri, Oct 2 - Mon, Oct 5

8:20 pm - 8:55 am

IAD

LHR

31h 35m

2 stops

7:05 am - 5:00 pm

LHR

IAD

14h 55m

2 stops

$682Scandinavian Airlines

Wed, Sep 2 - Tue, Sep 8

11:00 am - 4:00 pm

DCA

LHR

24h 00m

2 stops

7:05 am - 10:59 pm

LHR

DCA

20h 54m

2 stops

$722Scandinavian Airlines

Sun, Nov 22 - Tue, Nov 24

12:55 pm - 9:00 pm

DCA

LHR

27h 05m

2 stops

11:05 am - 10:29 am

LHR

DCA

52h 24m

2 stops

$725Air Canada

Mon, Aug 10 - Wed, Aug 19

5:35 pm - 11:10 am

EWR

LHR

12h 35m

1 stop

9:50 am - 4:05 pm

LHR

EWR

11h 15m

1 stop

$772Aer Lingus

Wed, Dec 2 - Wed, Dec 9

5:30 pm - 8:05 am

PHL

LHR

9h 35m

1 stop

9:50 am - 4:00 pm

LHR

PHL

11h 10m

1 stop

$878Aer Lingus

Useful Info

Low season	January
High season	July
Cheapest flight	$165

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 25% increase in price.

Flight from Philadelphia to London Heathrow Airport

Verified travelerFlew with American Airlines

PIT

LHR

Jun 2025

Make sure you do not need the transit visa.

LisaFlew with British Airways

PHL

LHR

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

PHL

LHR

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

PHL

LHR

Oct 2024

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

GlennFlew with British Airways

PHL

LHR

Jun 2024

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

Verified travelerFlew with British Airways

PIT

LHR

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.

Hounslow

Hayes

Slough

Richmond

Wembley

Luton

Salisbury

Crawley

Ilford

Eastbourne

Swindon

Watford

Bedford

Northampton

Colchester

Guildford

Ipswich

Kingston upon Thames

Twickenham

St. Albans

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London Heathrow Airport (LHR)

LHR

$165 Find Cheap Flights from Pennsylvania to London Heathrow Airport - Compare and Save

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

Cheap Flights from Pennsylvania to Heathrow

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