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Cheap flights from Pennsylvania to London from £140

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to London departing on 24/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
20:25 - 10:50
JFK
-
LHR
10h 25m
1 stop
Icelandair Logo
13:05 - 19:20
LHR
-
JFK
11h 15m
1 stop
£335Icelandair
Wed, 25 Mar - Thu, 16 Apr
Icelandair Logo
19:25 - 19:30
JFK
-
LHR
19h 05m
1 stop
Icelandair Logo
12:15 - 18:00
LHR
-
JFK
10h 45m
1 stop
£336Icelandair
Wed, 25 Feb - Tue, 3 Mar
Air Canada Logo
17:35 - 10:00
LGA
-
LHR
11h 25m
1 stop
Air Canada Logo
14:05 - 19:31
LHR
-
LGA
10h 26m
1 stop
£340Air Canada
Tue, 31 Mar - Mon, 6 Apr
Multiple Airlines Logo
23:25 - 20:05
JFK
-
LHR
15h 40m
1 stop
Multiple Airlines Logo
09:55 - 21:40
LHR
-
JFK
16h 45m
1 stop
£341Multiple Airlines
Fri, 17 Apr - Wed, 22 Apr
Multiple Airlines Logo
21:00 - 17:50
JFK
-
LHR
15h 50m
1 stop
Multiple Airlines Logo
17:50 - 13:20
LHR
-
JFK
24h 30m
1 stop
£342Multiple Airlines
Tue, 24 Feb - Thu, 26 Feb
Air Canada Logo
15:30 - 09:35
LGA
-
LHR
13h 05m
1 stop
Air Canada Logo
14:05 - 21:30
LHR
-
LGA
12h 25m
1 stop
£343Air Canada
Tue, 31 Mar - Sun, 5 Apr
TAP AIR PORTUGAL Logo
00:55 - 22:40
EWR
-
LHR
17h 45m
1 stop
TAP AIR PORTUGAL Logo
08:15 - 23:05
LHR
-
EWR
18h 50m
2 stops
£370TAP AIR PORTUGAL
Thu, 19 Mar - Tue, 24 Mar
TAP AIR PORTUGAL Logo
17:30 - 10:20
EWR
-
LHR
11h 50m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:30
LHR
-
EWR
14h 30m
1 stop
£370TAP AIR PORTUGAL
Wed, 6 May - Tue, 12 May
United Airlines Logo
08:25 - 20:35
EWR
-
LHR
7h 10mdirect
United Airlines Logo
09:00 - 21:30
LHR
-
EWR
16h 30m
1 stop
£373United Airlines
Fri, 6 Mar - Tue, 10 Mar
United Airlines Logo
20:00 - 08:25
EWR
-
LHR
7h 25mdirect
United Airlines Logo
12:05 - 21:30
LHR
-
EWR
13h 25m
1 stop
£374United Airlines
Wed, 4 Mar - Wed, 25 Mar

Lufthansa flights from Pennsylvania to London Heathrow Airport

Our best Lufthansa deals on Pennsylvania to London Heathrow Airport flight tickets
Lufthansa
6 Feb
JFK15:40New York John F Kennedy Intl
12h 05m
1 stop
LHR08:45London Heathrow
8 Feb
LHR08:45London Heathrow
11h 55m
1 stop
JFK15:40New York John F Kennedy Intl
£346
Lufthansa
29 Mar
LGA17:35New York LaGuardia
11h 25m
1 stop
LHR10:00London Heathrow
5 Apr
LHR14:05London Heathrow
12h 25m
1 stop
LGA21:30New York LaGuardia
£368
Lufthansa
2 Apr
LGA15:30New York LaGuardia
12h 05m
1 stop
LHR08:35London Heathrow
12 Apr
LHR09:30London Heathrow
17h 00m
1 stop
LGA21:30New York LaGuardia
£373

Finnair flights from Pennsylvania to London Heathrow Airport

Our best Finnair deals on Pennsylvania to London Heathrow Airport flight tickets
Finnair
5 Feb
JFK21:50New York John F Kennedy Intl
6h 50m
LHR09:40London Heathrow
11 Feb
LHR15:35London Heathrow
8h 05m
JFK18:40New York John F Kennedy Intl
£350
Finnair
3 Mar
JFK21:50New York John F Kennedy Intl
6h 50m
LHR09:40London Heathrow
10 Mar
LHR06:25London Heathrow
12h 40m
1 stop
JFK15:05New York John F Kennedy Intl
£370
Finnair
6 Mar
JFK10:15New York John F Kennedy Intl
6h 55m
LHR22:10London Heathrow
12 Mar
LHR08:05London Heathrow
11h 00m
1 stop
JFK15:05New York John F Kennedy Intl
£372

momondo Fare Finder

 
Customise your flight search to find flights from Pennsylvania to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 4 February 2026.
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

Wed 25/3

20:25-10:50

1 stop10h 25m

London Heathrow

Thu 16/4

13:05-19:20

1 stop11h 15m

£335

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 25/2

19:25-19:30

1 stop19h 05m

London Heathrow

Tue 3/3

12:15-18:00

1 stop10h 45m

£336

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 31/3

17:35-10:00

1 stop11h 25m

London Heathrow

Mon 6/4

14:05-19:31

1 stop10h 26m

£340

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 17/4

23:25-20:05

1 stop15h 40m

London Heathrow

Wed 22/4

09:55-21:40

1 stop16h 45m

£341

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 24/2

21:00-17:50

1 stop15h 50m

London Heathrow

Thu 26/2

17:50-13:20

1 stop24h 30m

£342

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 31/3

15:30-09:35

1 stop13h 05m

London Heathrow

Sun 5/4

14:05-21:30

1 stop12h 25m

£343

NewarkLondon

EWR - LHR

EWRLHR

Newark

Thu 19/3

00:55-22:40

1 stop17h 45m

London Heathrow

Tue 24/3

08:15-23:05

2 stops18h 50m

£370

NewarkLondon

EWR - LHR

EWRLHR

Newark

Wed 6/5

17:30-10:20

1 stop11h 50m

London Heathrow

Tue 12/5

06:00-15:30

1 stop14h 30m

£370

NewarkLondon

EWR - LHR

EWRLHR

Newark

Fri 6/3

08:25-20:35

Nonstop7h 10m

London Heathrow

Tue 10/3

09:00-21:30

1 stop16h 30m

£373

NewarkLondon

EWR - LHR

EWRLHR

Newark

Wed 4/3

20:00-08:25

Nonstop7h 25m

London Heathrow

Wed 25/3

12:05-21:30

1 stop13h 25m

£374

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to London from

How to get the cheapest flight ticket from Pennsylvania to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, September is the cheapest month to fly from Pennsylvania to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £480. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Pennsylvania averaging around £485.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Pennsylvania is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £488. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £725.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Pennsylvania to London Heathrow Airport in the evening for as low as £572. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £579 on average. Flights to London Heathrow Airport from Pennsylvania in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Pennsylvania to London Heathrow flight route?

Fly from Philadelphia to London Heathrow for the best Pennsylvania - London Heathrow flight prices

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

You are more likely to see cheaper flights to London Heathrow Airport from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £605 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Pennsylvania for as low as £503 on momondo.

What cabin class options are available on Pennsylvania to London Heathrow flights?

There are 3 cabin classes available to choose from on Pennsylvania to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Pennsylvania to London Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Pennsylvania to London Heathrow Airport.

Cheap Pennsylvania to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Pennsylvania to London Heathrow Airport

Best price found

£273

Fastest flight time

6h 50m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Pennsylvania in the past 72 hours is £273. The best return flight deal from Pennsylvania to London Heathrow Airport found on momondo in the last 72 hours is £493.
The fastest flight from Pennsylvania to London Heathrow Airport takes 6h 50m
Direct flights go from Pennsylvania to London Heathrow Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Pennsylvania to London Heathrow Airport?

    Prices for flights from Pennsylvania to London Heathrow Airport are updated daily.

  • How many operators does momondo search for flights from Pennsylvania to London Heathrow Airport?

  • How old do you have to be to fly from Pennsylvania to London Heathrow Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Pennsylvania to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Pennsylvania to London Heathrow Airport?

Best airlines flying from Pennsylvania to London Heathrow Airport

Compare and see reviews for airlines that fly from Pennsylvania to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £377Free CancellationRating
6.7
7,714 reviews
Search British Airways flights
Aer LingusPriceFrom £384Free CancellationRating
7.2
1,444 reviews
Search Aer Lingus flights
JetBluePriceFrom £418Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
American AirlinesPriceFrom £499Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
United AirlinesPriceFrom £1,011Free CancellationRating
7.4
9,235 reviews
Search United Airlines flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Northampton
Stratford-upon-Avon
Swindon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Poole
Guildford
Chelmsford
Hayes
Dover
Swanage
Folkestone

Why use momondo?

Why should I use momondo to find a flight deal from Pennsylvania to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Pennsylvania to London for you.

Can I find flights from Pennsylvania to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Pennsylvania with this policy.

How can momondo help me find flights from Pennsylvania to London?

Once you have performed a search for Pennsylvania to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Pennsylvania to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Pennsylvania to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

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