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

One-way options have recently been found by users for as low as £137 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £153 and British Airways from £179 one-way.

What are the most popular routes from Pennsylvania to London Heathrow Airport?

The most popular flight routes from Pennsylvania to London Heathrow Airport are New York John F Kennedy Intl - London Heathrow, Newark - London Heathrow and Washington, D.C. Dulles Intl - London Heathrow.

What are the cheapest flights from Pennsylvania to London Heathrow Airport?

The cheapest flight price from Pennsylvania to London Heathrow Airport is £301. On average you can expect to pay £538. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £316.

What are the most reliable airlines from Pennsylvania to London Heathrow Airport?

The top 3 most reliable airlines when flying from Pennsylvania to London Heathrow Airport are Malaysia Airlines (76%), American Airlines (76%) and Finnair (76%).

What are the most popular airlines that fly from Pennsylvania to London Heathrow Airport?

Before booking your flight from Pennsylvania to London Heathrow Airport check out the most popular airlines for this route: JetBlue, British Airways or Aer Lingus.

How far in advance should I book a flight from Pennsylvania to London Heathrow Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 10 days in advance, which can save you up to 31% on flights from Pennsylvania to London Heathrow Airport compared to booking the week you need them. Waiting 10 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £503. For sooner than that we have options available in the next 3 days from £719.

What is the cheapest month to fly from Pennsylvania to London Heathrow Airport?

The best pricing can be found in the month of February. Prices to London Heathrow Airport from Pennsylvania average £618. You can even find prices in February for less than £618, as users have found deals to London Heathrow Airport from as low as £420. The month of June appears to be one of the more expensive times to travel to London Heathrow Airport from Pennsylvania. Flying in the targeted month can save you up to 37%.

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

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

How can I find direct flights from Pennsylvania to Heathrow?

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

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

Yes. Cheapflights offers flight deals from Pennsylvania to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£137+ Flights from Pennsylvania to London Heathrow Airport

Cheap flight deals from Pennsylvania to Heathrow

Round-trip from	£378
One-way from	£137
Popular in	June
Cheapest in	February
Average price	£572
Good round-trip deal	£536 or less
Good one-way deal	£395 or less

Icelandair
10/10-18/10
2 total stops
58h 30m total
Pennsylvania to London

Search Deals

Icelandair
20/7
1 total stop
16h 10m total
Pennsylvania to London

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£104 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Pennsylvania to London Heathrow.

Search Deals

Price to beat on a one-way flight from Pennsylvania to London Heathrow.

Search Deals

Find flight deals from Pennsylvania to Heathrow

Cheapest flights from Pennsylvania to Heathrow
Explore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2025.

Tue 28/1020:30EWR - LHR

1 stop10h 20mIcelandair

Sat 1/1112:15LHR - EWR

1 stop11h 05mIcelandair

Deal found 16/4£375

Fri 10/1023:10JFK - LHR

1 stop31h 45mIcelandair

Sat 18/1021:25LHR - JFK

1 stop26h 45mIcelandair

Deal found 16/4£378

Fri 16/519:25JFK - LHR

1 stop13h 15mMultiple Airlines

Sun 18/506:50LHR - JFK

1 stop11h 10mMultiple Airlines

Deal found 16/4£379

Fri 25/420:30JFK - LHR

1 stop20h 15mSWISS

Sun 27/419:15LHR - JFK

1 stop24h 05mSWISS

Deal found 16/4£384

Tue 13/515:30LGA - LHR

1 stop10h 00mAir Canada

Wed 21/509:30LHR - LGA

1 stop17h 00mAir Canada

Deal found 17/4£385

Tue 6/510:25EWR - LHR

1 stop15h 05mMultiple Airlines

Fri 16/513:45LHR - EWR

1 stop11h 25mMultiple Airlines

Deal found 15/4£387

Mon 13/1020:30IAD - LHR

1 stop10h 25mIcelandair

Wed 3/1212:15LHR - IAD

1 stop11h 05mIcelandair

Deal found 16/4£387

Fri 25/418:10JFK - LHR

1 stop21h 45mBrussels Airlines

Sun 27/407:45LHR - JFK

2 stops36h 15mBrussels Airlines

Deal found 16/4£393

Fri 18/422:55JFK - LHR

Nonstop7h 10mBritish Airways

Fri 25/419:05LHR - JFK

Nonstop7h 55mBritish Airways

Deal found 17/4£399

Fri 15/821:40EWR - LHR

Nonstop7h 30mLufthansa

Sat 30/812:00LHR - EWR

Nonstop8h 15mLufthansa

Deal found 16/4£400

Fri 2/510:30JFK - LHR

2 stops15h 00mAir Canada

Thu 8/512:05LHR - JFK

2 stops14h 43mAir Canada

Deal found 16/4£405

Wed 24/921:25EWR - LHR

Nonstop7h 05mBritish Airways

Mon 29/916:35LHR - EWR

Nonstop7h 50mBritish Airways

Deal found 16/4£406

Best flights from Pennsylvania to Heathrow
Discover carefully curated flight deals from Pennsylvania to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 April 2025.

Fri 10/1023:10JFK - LHR

1 stop31h 45mIcelandair

Sat 18/1021:25LHR - JFK

1 stop26h 45mIcelandair

Deal found 16/4£378

Fri 16/519:25JFK - LHR

1 stop13h 15mMultiple Airlines

Sun 18/506:50LHR - JFK

1 stop11h 10mMultiple Airlines

Deal found 16/4£379

Tue 13/515:30LGA - LHR

1 stop10h 00mAir Canada

Wed 21/509:30LHR - LGA

1 stop17h 00mAir Canada

Deal found 17/4£385

Sun 27/420:20JFK - LHR

Nonstop7h 30mVirgin Atlantic

Mon 5/520:10LHR - JFK

Nonstop7h 50mVirgin Atlantic

Deal found 17/4£394

Tue 29/419:30JFK - LHR

Nonstop7h 15mBritish Airways

Tue 6/519:40LHR - JFK

Nonstop7h 50mBritish Airways

Deal found 16/4£399

Fri 15/821:40EWR - LHR

Nonstop7h 30mLufthansa

Sat 30/812:00LHR - EWR

Nonstop8h 15mLufthansa

Deal found 16/4£400

Fri 2/509:00JFK - LHR

1 stop16h 30mUnited Airlines

Wed 7/508:40LHR - JFK

1 stop12h 55mUnited Airlines

Deal found 17/4£411

Wed 30/420:30JFK - LHR

1 stop14h 55mSWISS

Mon 5/520:05LHR - JFK

1 stop21h 45mSWISS

Deal found 16/4£413

Mon 12/520:25JFK - LHR

Nonstop7h 25mDelta

Wed 21/516:50LHR - JFK

Nonstop7h 50mDelta

Deal found 16/4£422

Thu 1/515:25JFK - LHR

1 stop11h 15mAmerican Airlines

Sun 4/517:00LHR - JFK

Nonstop8h 00mAmerican Airlines

Deal found 16/4£427

Sun 31/818:50EWR - LHR

1 stop14h 45mScandinavian Airlines

Mon 15/907:05LHR - EWR

1 stop11h 10mScandinavian Airlines

Deal found 16/4£430

Wed 20/815:20JFK - LHR

1 stop10h 35mIberia

Sun 31/808:25LHR - JFK

Nonstop7h 45mIberia

Deal found 17/4£433

Direct flights from Pennsylvania to Heathrow
Explore direct flight options from Pennsylvania to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 April 2025.

Sun 11/518:45JFK - LHR

Nonstop7h 05mBritish Airways

Wed 21/510:00LHR - JFK

Nonstop7h 45mBritish Airways

Deal found 17/4£387

Sun 27/420:20JFK - LHR

Nonstop7h 30mVirgin Atlantic

Mon 5/520:10LHR - JFK

Nonstop7h 50mVirgin Atlantic

Deal found 17/4£394

Fri 15/821:40EWR - LHR

Nonstop7h 30mLufthansa

Sat 30/812:00LHR - EWR

Nonstop8h 15mLufthansa

Deal found 16/4£400

Wed 24/921:25EWR - LHR

Nonstop7h 05mBritish Airways

Mon 29/916:35LHR - EWR

Nonstop7h 50mBritish Airways

Deal found 16/4£406

Wed 30/418:45EWR - LHR

Nonstop7h 30mUnited Airlines

Wed 7/513:00LHR - EWR

Nonstop8h 10mUnited Airlines

Deal found 16/4£419

Wed 30/421:50JFK - LHR

Nonstop7h 25mAir France

Wed 7/516:05LHR - JFK

Nonstop8h 15mAir France

Deal found 15/4£421

Mon 12/520:25JFK - LHR

Nonstop7h 25mDelta

Wed 21/516:50LHR - JFK

Nonstop7h 50mDelta

Deal found 16/4£422

Sat 3/521:25EWR - LHR

Nonstop7h 05mAmerican Airlines

Sat 10/516:35LHR - EWR

Nonstop7h 50mAmerican Airlines

Deal found 17/4£426

Thu 1/520:55JFK - LHR

Nonstop7h 15mAmerican Airlines

Wed 7/519:05LHR - JFK

Nonstop7h 55mAmerican Airlines

Deal found 17/4£426

Mon 6/1021:25EWR - LHR

Nonstop7h 05mIberia

Fri 10/1016:35LHR - EWR

Nonstop7h 50mIberia

Deal found 15/4£428

Mon 28/419:30JFK - LHR

Nonstop7h 15mFinnair

Wed 7/516:20LHR - JFK

Nonstop8h 05mFinnair

Deal found 16/4£435

Sun 11/509:45JFK - LHR

Nonstop6h 55mIberia

Wed 14/511:35LHR - JFK

Nonstop7h 50mIberia

Deal found 16/4£438

Last-minute flights from Pennsylvania to Heathrow
Discover last-minute flight deals from Pennsylvania to Heathrow. Data last updated 17 April 2025 and is based on user searches.

Thu 17/421:45JFK - LHR

1 stop29h 35mUnited Airlines

Sun 20/406:50LHR - JFK

1 stop11h 10mUnited Airlines

Deal found 16/4£381

Tue 22/418:55LGA - LHR

1 stop10h 05mAir Canada

Tue 13/509:30LHR - LGA

1 stop10h 18mAir Canada

Deal found 17/4£423

Tue 22/419:29LGA - LHR

1 stop10h 11mMultiple Airlines

Fri 2/509:30LHR - LGA

1 stop12h 28mMultiple Airlines

Deal found 16/4£424

Thu 24/423:10JFK - LHR

1 stop16h 10mIcelandair

Wed 7/521:25LHR - JFK

1 stop29h 45mIcelandair

Deal found 16/4£381

Thu 24/409:45JFK - LHR

Nonstop6h 55mBritish Airways

Thu 1/517:00LHR - JFK

Nonstop7h 55mBritish Airways

Deal found 16/4£399

Fri 25/420:30JFK - LHR

1 stop20h 15mSWISS

Sun 27/419:15LHR - JFK

1 stop24h 05mSWISS

Deal found 16/4£384

Fri 25/421:45JFK - LHR

1 stop15h 55mMultiple Airlines

Sun 27/406:00LHR - JFK

1 stop11h 50mMultiple Airlines

Deal found 16/4£386

Fri 25/418:10JFK - LHR

1 stop21h 45mBrussels Airlines

Sun 27/407:45LHR - JFK

2 stops36h 15mBrussels Airlines

Deal found 16/4£393

Fri 25/418:15EWR - LHR

Nonstop7h 30mLufthansa

Sat 10/516:00LHR - EWR

Nonstop8h 10mLufthansa

Deal found 17/4£424

Fri 25/409:45JFK - LHR

Nonstop6h 55mIberia

Sat 10/506:10LHR - JFK

1 stop20h 30mIberia

Deal found 15/4£429

Sat 26/417:55EWR - LHR

Nonstop6h 55mBritish Airways

Sat 3/516:35LHR - EWR

Nonstop7h 50mBritish Airways

Deal found 17/4£420

Sat 26/412:40EWR - LHR

1 stop27h 20mMultiple Airlines

Sat 10/513:45LHR - EWR

1 stop11h 25mMultiple Airlines

Deal found 16/4£421

One-way flights from Pennsylvania to Heathrow
Search for one-way flight options from Pennsylvania to Heathrow. Find affordable one-way fares based on user searches. Data last updated 17 April 2025.

Sun 20/723:10JFK - LHR

1 stop16h 10mIcelandair

Deal found 16/4£137

Tue 22/720:30PIT - LHR

1 stop18h 50mIcelandair

Deal found 15/4£140

Wed 6/822:50EWR - LHR

1 stop13h 55mTAP AIR PORTUGAL

Deal found 16/4£153

Tue 22/700:15JFK - LHR

1 stop33h 00mMultiple Airlines

Deal found 17/4£164

Mon 14/722:05JFK - LHR

1 stop14h 40mTAP AIR PORTUGAL

Deal found 17/4£174

Sun 27/419:30JFK - LHR

Nonstop7h 15mBritish Airways

Deal found 16/4£179

Mon 8/923:00EWR - LHR

1 stop10h 15mMultiple Airlines

Deal found 16/4£180

Wed 30/420:25EWR - LHR

1 stop18h 55mIcelandair

Deal found 16/4£181

Tue 22/723:15IAD - LHR

1 stop31h 40mIcelandair

Deal found 16/4£191

Tue 13/518:45EWR - LHR

Nonstop7h 30mBrussels Airlines

Deal found 15/4£192

Mon 28/717:45IAD - LHR

1 stop11h 35mTAP AIR PORTUGAL

Deal found 16/4£194

Sun 20/713:29IAD - LHR

2 stops25h 51mMultiple Airlines

Deal found 16/4£207

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 10/10

23:10-11:55

1 stop31h 45m

London Heathrow

Sat 18/10

21:25-19:10

1 stop26h 45m

£378

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 16/5

19:25-13:40

1 stop13h 15m

London Heathrow

Sun 18/5

06:50-13:00

1 stop11h 10m

£379

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 13/5

15:30-06:30

1 stop10h 00m

London Heathrow

Wed 21/5

09:30-21:30

1 stop17h 00m

£385

NewarkLondon

EWR - LHR

EWRLHR

Newark

Sun 3/8

20:25-11:55

1 stop10h 30m

London Heathrow

Wed 20/8

13:05-19:10

1 stop11h 05m

£386

NewarkLondon

EWR - LHR

EWRLHR

Newark

Tue 6/5

10:25-06:30

1 stop15h 05m

London Heathrow

Fri 16/5

13:45-20:10

1 stop11h 25m

£387

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 13/10

20:30-11:55

1 stop10h 25m

London Heathrow

Wed 3/12

12:15-18:20

1 stop11h 05m

£387

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sun 27/4

20:20-08:50

Nonstop7h 30m

London Heathrow

Mon 5/5

20:10-23:00

Nonstop7h 50m

£394

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 29/4

19:30-07:45

Nonstop7h 15m

London Heathrow

Tue 6/5

19:40-22:30

Nonstop7h 50m

£399

NewarkLondon

EWR - LHR

EWRLHR

Newark

Fri 15/8

15:30-06:30

1 stop10h 00m

London Heathrow

Sat 30/8

12:00-15:15

Nonstop8h 15m

£400

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 2/5

10:30-06:30

2 stops15h 00m

London Heathrow

Thu 8/5

12:05-21:48

2 stops14h 43m

£405

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 60 results

...

Best time to book a flight from Pennsylvania to Heathrow

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

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Currently, January is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £112). Flying from Pennsylvania to London Heathrow Airport in August is currently the most expensive (average of £164). 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 PA to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to London Heathrow Airport as you normally would.

Weekly flight availability from Pennsylvania to London Heathrow Airport

The most flights from USPA to LHR are scheduled on a Monday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from Pennsylvania to London, such as Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,916 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,327 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,269 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.6

Good

775 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France

7.5

Good

1,435 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Pennsylvania to London Heathrow Airport one-way?
One-way options have recently been found by users for as low as £137 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £153 and British Airways from £179 one-way.
What are the most popular routes from Pennsylvania to London Heathrow Airport?
The most popular flight routes from Pennsylvania to London Heathrow Airport are New York John F Kennedy Intl - London Heathrow, Newark - London Heathrow and Washington, D.C. Dulles Intl - London Heathrow.
What are the most reliable airlines from Pennsylvania to London Heathrow Airport?
The top 3 most reliable airlines when flying from Pennsylvania to London Heathrow Airport are Malaysia Airlines (76%), American Airlines (76%) and Finnair (76%).
What are the cheapest flights from Pennsylvania to London Heathrow Airport?
The cheapest flight price from Pennsylvania to London Heathrow Airport is £301. On average you can expect to pay £538. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £316.
Can I find deals for flights from Pennsylvania to Heathrow that include hotel bookings?
Yes. In addition to deals on Pennsylvania to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Pennsylvania to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Heathrow.
Can I find deals for business class flights from Pennsylvania to Heathrow?
Yes. Cheapflights offers flight deals from Pennsylvania to Heathrow 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 Pennsylvania to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £112). Flying from Pennsylvania to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Hounslow

Deal

Milton Keynes

Gatwick

Luton

Slough

Croydon

Eastbourne

Wembley

Northampton

Hayes

Crawley

Southend-on-Sea

Maidstone

Swindon

Ipswich

Southall

Ilford

Winchester

Folkestone

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Pennsylvania to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Iberia	Cheapest£440	Average£587	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
JetBlue	Cheapest£458	Average£531	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
British Airways	Cheapest£463	Average£596	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£498	Average£743	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

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

Cheapflights makes it easy to find Pennsylvania to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Pennsylvania to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from Pennsylvania to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from Pennsylvania to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Pennsylvania to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Pennsylvania to London Heathrow Airport from £137

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Pennsylvania to Heathrow

Keep the following information in mind while searching for Pennsylvania to Heathrow flight deals. Data was last updated 17 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Pennsylvania to Heathrow

Cheapest flights from Pennsylvania to HeathrowExplore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2025.

Explore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Pennsylvania to Heathrow

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Pennsylvania to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 April 2025.

Weekly flight availability from Pennsylvania to London Heathrow Airport

Explore weekly flight availability from Pennsylvania to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 April 2025.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from Pennsylvania to London, such as Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

What are the most popular routes from Pennsylvania to London Heathrow Airport?

What are the most reliable airlines from Pennsylvania to London Heathrow Airport?

What are the cheapest flights from Pennsylvania to London Heathrow Airport?

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

How can I find direct flights from Pennsylvania to Heathrow?

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

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

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Alternative routes for Pennsylvania to Heathrow

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Top 4 airlines flying from Pennsylvania to Heathrow

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Cheapest flights from Pennsylvania to Heathrow
Explore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2025.