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 £129 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £130 and British Airways from £150 one-way.

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.

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).

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 £262. On average you can expect to pay £576. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £284.

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 Aer Lingus (87%), American Airlines (86%) and Finnair (86%).

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 34 days in advance, which can save you up to 35% on flights from Pennsylvania to London Heathrow Airport compared to booking the week you need them. Waiting 34 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 £505. For sooner than that we have options available in the next 3 days from £672.

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 £593. You can even find prices in February for less than £593, as users have found deals to London Heathrow Airport from as low as £405. 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 41%.

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.

£129+ Flights from Pennsylvania to London Heathrow Airport

Cheap flight deals from Pennsylvania to Heathrow

Round-trip from	£359
One-way from	£129
Popular in	June
Cheapest in	February
Average price	£720
Good round-trip deal	£474 or less
Good one-way deal	£327 or less

Air Canada
6/8-27/8
2 total stops
20h 05m total
Pennsylvania to London

Search Deals

Icelandair
26/8
1 total stop
10h 30m total
Pennsylvania to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£102 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 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 1 July 2025.

Wed 6/819:10LGA - LHR

1 stop9h 50mAir Canada

Wed 27/809:30LHR - LGA

1 stop10h 15mAir Canada

Deal found 30/6£359

Thu 14/820:25JFK - LHR

1 stop10h 30mIcelandair

Thu 28/813:05LHR - JFK

1 stop14h 05mIcelandair

Deal found 30/6£360

Mon 3/1110:15JFK - LHR

Nonstop6h 55mIberia

Mon 17/1108:25LHR - JFK

1 stop18h 35mIberia

Deal found 1/7£362

Sun 17/815:00LGA - LHR

1 stop10h 45mVirgin Atlantic

Mon 25/809:40LHR - LGA

1 stop11h 50mVirgin Atlantic

Deal found 30/6£362

Sun 20/723:25JFK - LHR

Nonstop7h 00mVirgin Atlantic

Sun 14/912:55LHR - JFK

Nonstop8h 05mVirgin Atlantic

Deal found 1/7£362

Fri 19/909:45JFK - LHR

Nonstop6h 55mAmerican Airlines

Fri 26/907:45LHR - JFK

1 stop12h 00mAmerican Airlines

Deal found 1/7£363

Wed 20/819:29JFK - LHR

Nonstop7h 16mBritish Airways

Mon 1/917:00LHR - JFK

Nonstop7h 55mBritish Airways

Deal found 1/7£364

Wed 10/909:00JFK - LHR

1 stop19h 35mUnited Airlines

Mon 15/908:40LHR - JFK

1 stop12h 55mUnited Airlines

Deal found 29/6£365

Tue 12/818:29JFK - LHR

1 stop9h 36mAer Lingus

Sat 23/807:40LHR - JFK

1 stop10h 45mAer Lingus

Deal found 30/6£366

Thu 21/819:29LGA - LHR

1 stop30h 26mUnited Airlines

Thu 28/809:30LHR - LGA

1 stop27h 32mUnited Airlines

Deal found 30/6£370

Wed 8/1017:45LGA - LHR

1 stop10h 50mMultiple Airlines

Sat 11/1009:30LHR - LGA

1 stop15h 07mMultiple Airlines

Deal found 29/6£371

Wed 27/815:30LGA - LHR

1 stop10h 00mLufthansa

Wed 3/914:05LHR - LGA

1 stop10h 32mLufthansa

Deal found 30/6£372

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 1 July 2025.

Wed 6/819:10LGA - LHR

1 stop9h 50mAir Canada

Wed 27/809:30LHR - LGA

1 stop10h 15mAir Canada

Deal found 30/6£359

Thu 14/820:25JFK - LHR

1 stop10h 30mIcelandair

Thu 28/813:05LHR - JFK

1 stop14h 05mIcelandair

Deal found 30/6£360

Mon 3/1110:15JFK - LHR

Nonstop6h 55mIberia

Mon 17/1108:25LHR - JFK

1 stop18h 35mIberia

Deal found 1/7£362

Sun 17/815:00LGA - LHR

1 stop10h 45mVirgin Atlantic

Mon 25/809:40LHR - LGA

1 stop11h 50mVirgin Atlantic

Deal found 30/6£362

Fri 19/909:45JFK - LHR

Nonstop6h 55mAmerican Airlines

Fri 26/907:45LHR - JFK

1 stop12h 00mAmerican Airlines

Deal found 1/7£363

Wed 20/807:50JFK - LHR

Nonstop6h 55mBritish Airways

Sat 30/810:00LHR - JFK

Nonstop7h 45mBritish Airways

Deal found 1/7£364

Wed 10/909:00JFK - LHR

1 stop19h 35mUnited Airlines

Mon 15/908:40LHR - JFK

1 stop12h 55mUnited Airlines

Deal found 29/6£365

Tue 12/818:29JFK - LHR

1 stop9h 36mAer Lingus

Sat 23/807:40LHR - JFK

1 stop10h 45mAer Lingus

Deal found 30/6£366

Wed 8/1017:45LGA - LHR

1 stop10h 50mMultiple Airlines

Sat 11/1009:30LHR - LGA

1 stop15h 07mMultiple Airlines

Deal found 29/6£371

Wed 27/815:30LGA - LHR

1 stop10h 00mLufthansa

Wed 3/914:05LHR - LGA

1 stop10h 32mLufthansa

Deal found 30/6£372

Thu 14/820:59JFK - LHR

Nonstop7h 31mJetBlue

Thu 21/808:15LHR - JFK

Nonstop8h 04mJetBlue

Deal found 30/6£372

Fri 15/819:00JFK - LHR

Nonstop7h 15mDelta

Wed 20/808:40LHR - JFK

1 stop11h 45mDelta

Deal found 30/6£374

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 1 July 2025.

Thu 14/820:30JFK - LHR

Nonstop7h 20mVirgin Atlantic

Thu 21/820:10LHR - JFK

Nonstop7h 50mVirgin Atlantic

Deal found 30/6£362

Wed 20/822:55JFK - LHR

Nonstop7h 10mBritish Airways

Wed 27/813:20LHR - JFK

Nonstop7h 50mBritish Airways

Deal found 30/6£363

Sun 24/819:00JFK - LHR

Nonstop7h 15mAir France

Tue 2/920:10LHR - JFK

Nonstop7h 50mAir France

Deal found 1/7£365

Sun 17/808:45JFK - LHR

Nonstop7h 00mJetBlue

Thu 21/808:15LHR - JFK

Nonstop8h 04mJetBlue

Deal found 30/6£372

Tue 22/719:00JFK - LHR

Nonstop7h 15mMultiple Airlines

Thu 31/718:50LHR - JFK

Nonstop7h 39mMultiple Airlines

Deal found 30/6£374

Fri 22/818:30JFK - LHR

Nonstop7h 00mIberia

Sat 13/1219:50LHR - JFK

Nonstop8h 05mIberia

Deal found 30/6£375

Sun 24/819:00JFK - LHR

Nonstop7h 15mDelta

Tue 2/916:50LHR - JFK

Nonstop7h 50mDelta

Deal found 29/6£378

Sun 24/808:30EWR - LHR

Nonstop7h 10mUnited Airlines

Tue 2/909:30LHR - EWR

Nonstop8h 10mUnited Airlines

Deal found 1/7£380

Fri 26/921:25EWR - LHR

Nonstop7h 00mAmerican Airlines

Fri 10/1016:35LHR - EWR

Nonstop7h 50mAmerican Airlines

Deal found 30/6£381

Mon 15/921:25EWR - LHR

Nonstop7h 05mBritish Airways

Tue 23/911:10LHR - EWR

Nonstop7h 45mBritish Airways

Deal found 30/6£381

Thu 14/817:25EWR - LHR

Nonstop7h 30mLufthansa

Thu 21/808:00LHR - EWR

Nonstop8h 05mLufthansa

Deal found 29/6£387

Wed 30/721:30JFK - LHR

Nonstop7h 30mKLM

Wed 6/816:50LHR - JFK

Nonstop7h 50mKLM

Deal found 29/6£394

Last-minute flights from Pennsylvania to Heathrow
Discover last-minute flight deals from Pennsylvania to Heathrow. Data last updated 1 July 2025 and is based on user searches.

Mon 7/721:00JFK - LHR

Nonstop7h 15mVirgin Atlantic

Sun 31/820:10LHR - JFK

Nonstop7h 50mVirgin Atlantic

Deal found 29/6£381

Mon 7/718:29JFK - LHR

1 stop9h 36mAer Lingus

Mon 15/907:40LHR - JFK

1 stop10h 45mAer Lingus

Deal found 30/6£385

Mon 7/718:59LGA - LHR

1 stop10h 31mVirgin Atlantic

Mon 15/909:40LHR - LGA

1 stop11h 47mVirgin Atlantic

Deal found 30/6£390

Mon 7/708:45JFK - LHR

Nonstop7h 00mJetBlue

Sat 23/808:15LHR - JFK

Nonstop8h 04mJetBlue

Deal found 30/6£390

Mon 7/719:30JFK - LHR

Nonstop7h 15mBritish Airways

Mon 15/906:15LHR - JFK

1 stop17h 40mBritish Airways

Deal found 30/6£391

Tue 8/709:00JFK - LHR

1 stop16h 30mUnited Airlines

Wed 1/1008:40LHR - JFK

1 stop12h 55mUnited Airlines

Deal found 30/6£384

Tue 8/711:00EWR - LHR

1 stop29h 00mUnited Airlines

Wed 1/1009:05LHR - EWR

1 stop33h 50mUnited Airlines

Deal found 30/6£386

Tue 8/709:00JFK - LHR

1 stop16h 30mMultiple Airlines

Wed 23/706:00LHR - JFK

1 stop15h 35mMultiple Airlines

Deal found 30/6£386

Tue 8/715:30EWR - LHR

1 stop10h 00mAir Canada

Wed 1/1009:30LHR - EWR

1 stop10h 13mAir Canada

Deal found 30/6£386

Tue 8/708:45LGA - LHR

1 stop16h 45mAir Canada

Wed 1/1014:05LHR - LGA

1 stop12h 25mAir Canada

Deal found 30/6£387

Thu 10/719:00JFK - LHR

Nonstop7h 15mDelta

Mon 25/817:35LHR - JFK

1 stop10h 40mDelta

Deal found 30/6£392

Fri 11/712:40EWR - LHR

1 stop27h 20mMultiple Airlines

Tue 15/706:00LHR - EWR

1 stop19h 10mMultiple Airlines

Deal found 30/6£392

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 1 July 2025.

Tue 26/820:25JFK - LHR

1 stop10h 30mIcelandair

Deal found 1/7£129

Mon 28/722:05JFK - LHR

1 stop14h 40mTAP AIR PORTUGAL

Deal found 30/6£130

Tue 29/709:45JFK - LHR

Nonstop6h 55mBritish Airways

Deal found 29/6£150

Wed 30/707:05LGA - LHR

1 stop18h 25mAir Canada

Deal found 30/6£151

Sun 13/723:40JFK - LHR

1 stop28h 30mIberia

Deal found 1/7£153

Wed 5/1119:01JFK - LHR

Nonstop6h 54mVirgin Atlantic

Deal found 1/7£154

Thu 31/719:00JFK - LHR

Nonstop7h 15mAir France

Deal found 1/7£159

Thu 14/809:00JFK - LHR

1 stop20h 00mAir Canada

Deal found 30/6£160

Tue 9/920:30PIT - LHR

1 stop18h 50mIcelandair

Deal found 30/6£163

Wed 30/719:15LGA - LHR

1 stop9h 45mUnited Airlines

Deal found 30/6£165

Tue 21/1015:30LGA - LHR

1 stop10h 00mLufthansa

Deal found 30/6£168

Sun 3/806:30PIT - LHR

2 stops35h 25mMultiple Airlines

Deal found 29/6£168

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

LGA - LHR

LGALHR

New York LaGuardia

Wed 6/8

19:10-10:00

1 stop9h 50m

London Heathrow

Wed 27/8

09:30-14:45

1 stop10h 15m

£359

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Thu 14/8

20:25-11:55

1 stop10h 30m

London Heathrow

Thu 28/8

13:05-22:10

1 stop14h 05m

£360

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Mon 3/11

10:15-22:10

Nonstop6h 55m

London Heathrow

Mon 17/11

08:25-22:00

1 stop18h 35m

£362

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Sun 17/8

15:00-06:45

1 stop10h 45m

London Heathrow

Mon 25/8

09:40-16:30

1 stop11h 50m

£362

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sun 20/7

23:25-11:25

Nonstop7h 00m

London Heathrow

Sun 14/9

12:55-16:00

Nonstop8h 05m

£362

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 19/9

09:45-21:40

Nonstop6h 55m

London Heathrow

Fri 26/9

07:45-14:45

1 stop12h 00m

£363

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 20/8

19:29-07:45

Nonstop7h 16m

London Heathrow

Mon 1/9

17:00-19:55

Nonstop7h 55m

£364

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 10/9

09:00-09:35

1 stop19h 35m

London Heathrow

Mon 15/9

08:40-16:35

1 stop12h 55m

£365

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 12/8

18:29-09:05

1 stop9h 36m

London Heathrow

Sat 23/8

07:40-13:25

1 stop10h 45m

£366

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Thu 21/8

19:29-06:55

1 stop30h 26m

London Heathrow

Thu 28/8

09:30-08:02

1 stop27h 32m

£370

Flights are sorted by cheapest return flights first.

Deals found on 1/7

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 Wednesday, which is when the least amount of flights are scheduled (10 on average).

Reviews of airlines servicing Heathrow

See what other customers who have flown with Delta, KLM, andAustrian Airlines from Pennsylvania to London Heathrow Airport 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.

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,973 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,366 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Austrian Airlines

7.6

Good

807 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,301 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air France

7.5

Good

1,472 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 £129 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £130 and British Airways from £150 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 Aer Lingus (87%), American Airlines (86%) and Finnair (86%).
What are the cheapest flights from Pennsylvania to London Heathrow Airport?
The cheapest flight price from Pennsylvania to London Heathrow Airport is £262. On average you can expect to pay £576. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £284.
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

Croydon

Milton Keynes

Hounslow

Deal

Northampton

Gatwick

Slough

Luton

Wembley

Crawley

Eastbourne

Ilford

Watford

Southend-on-Sea

Folkestone

Ipswich

Winchester

Hayes

Maidstone

Swindon

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
JetBlue	Cheapest£418	Average£529	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Iberia	Cheapest£425	Average£525	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£459	Average£595	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£482	Average£759	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 £129

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 26/8. 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 1 July 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 1 July 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 1 July 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 1 July 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 1 July 2025.

Reviews of airlines servicing Heathrow

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?

Travelling to a place near Pennsylvania?

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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 1 July 2025.