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Cheap flights from Pennsylvania to the United Kingdom from £129

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 the United Kingdom departing on 21/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
17:45 - 08:05
EWR
-
LHR
9h 20m1 stop
Aer Lingus Logo
09:50 - 16:15
LHR
-
EWR
11h 25m1 stop
£365Aer Lingus
Fri, 9 Jan - Thu, 15 Jan
Icelandair Logo
19:35 - 10:55
EWR
-
LGW
10h 20m1 stop
Icelandair Logo
13:00 - 19:15
LGW
-
EWR
11h 15m1 stop
£365Icelandair
Tue, 17 Feb - Tue, 28 Apr
TAP AIR PORTUGAL Logo
23:55 - 15:50
EWR
-
LGW
10h 55m1 stop
TAP AIR PORTUGAL Logo
10:10 - 22:10
LGW
-
EWR
17h 00m2 stops
£365TAP AIR PORTUGAL
Thu, 22 Jan - Thu, 29 Jan
TAP AIR PORTUGAL Logo
23:55 - 09:25
EWR
-
LGW
28h 30m2 stops
TAP AIR PORTUGAL Logo
16:35 - 22:10
LGW
-
EWR
34h 35m1 stop
£366TAP AIR PORTUGAL
Tue, 13 Jan - Wed, 21 Jan
Multiple Airlines Logo
15:30 - 13:20
EWR
-
LGW
16h 50m2 stops
Multiple Airlines Logo
06:35 - 20:37
LGW
-
EWR
19h 02m2 stops
£367Multiple Airlines
Sun, 8 Feb - Tue, 17 Feb
Scandinavian Airlines Logo
17:30 - 14:35
EWR
-
LHR
16h 05m2 stops
Scandinavian Airlines Logo
06:40 - 13:25
LHR
-
EWR
11h 45m1 stop
£368Scandinavian Airlines
Fri, 9 Jan - Sun, 11 Jan
American Airlines Logo
12:39 - 09:00
EWR
-
LGW
15h 21m2 stops
American Airlines Logo
12:30 - 00:59
LGW
-
EWR
17h 29m2 stops
£371American Airlines
Wed, 4 Feb - Wed, 11 Feb
Multiple Airlines Logo
18:55 - 10:05
EWR
-
LHR
10h 10m1 stop
Multiple Airlines Logo
06:00 - 13:55
LHR
-
EWR
12h 55m1 stop
£371Multiple Airlines
Thu, 15 Jan - Tue, 20 Jan
American Airlines Logo
18:25 - 06:20
JFK
-
LHR
6h 55mdirect
American Airlines Logo
06:15 - 13:20
LHR
-
JFK
12h 05m1 stop
£373American Airlines
Thu, 15 Jan - Mon, 26 Jan
Scandinavian Airlines Logo
20:30 - 16:25
IAD
-
LHR
14h 55m2 stops
Scandinavian Airlines Logo
10:20 - 17:15
LHR
-
IAD
11h 55m1 stop
£425Scandinavian Airlines
Thu, 5 Feb - Thu, 12 Feb

Scandinavian Airlines flights from Pennsylvania to United Kingdom

Our best Scandinavian Airlines deals on Pennsylvania to United Kingdom flight tickets
Scandinavian Airlines
9 Jan
EWR17:30Newark
16h 05m
2 stops
LHR14:35London Heathrow
11 Jan
LHR06:40London Heathrow
11h 45m
1 stop
EWR13:25Newark
£368
Find similar
Scandinavian Airlines
12 Jan
EWR17:30Newark
10h 50m
1 stop
LHR09:20London Heathrow
15 Jan
LHR06:40London Heathrow
11h 55m
1 stop
EWR13:35Newark
£396
Find similar

SWISS flights from Pennsylvania to United Kingdom

Our best SWISS deals on Pennsylvania to United Kingdom flight tickets
SWISS
22 Feb
EWR22:00Newark
13h 20m
1 stop
LHR16:20London Heathrow
1 Mar
LHR06:00London Heathrow
19h 30m
1 stop
EWR20:30Newark
£369
Find similar
SWISS
8 Feb
EWR22:00Newark
14h 50m
1 stop
LGW17:50London Gatwick
17 Feb
LGW18:40London Gatwick
24h 15m
1 stop
EWR13:55Newark
£371
Find similar
SWISS
8 Feb
EWR22:00Newark
14h 50m
1 stop
LGW17:50London Gatwick
17 Feb
LGW18:40London Gatwick
24h 15m
1 stop
EWR13:55Newark
£372
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Pennsylvania to United Kingdom 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 24 December 2025.
Use the filters below to find and compare flights from Pennsylvania to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

NewarkLondon

EWR - LHR

EWRLHR

Newark

Fri 9/1

17:45-08:05

1 stop9h 20m

London Heathrow

Thu 15/1

09:50-16:15

1 stop11h 25m

£365

NewarkLondon

EWR - LGW

EWRLGW

Newark

Tue 17/2

19:35-10:55

1 stop10h 20m

London Gatwick

Tue 28/4

13:00-19:15

1 stop11h 15m

£365

NewarkLondon

EWR - LGW

EWRLGW

Newark

Thu 22/1

23:55-15:50

1 stop10h 55m

London Gatwick

Thu 29/1

10:10-22:10

2 stops17h 00m

£365

NewarkLondon

EWR - LGW

EWRLGW

Newark

Tue 13/1

23:55-09:25

2 stops28h 30m

London Gatwick

Wed 21/1

16:35-22:10

1 stop34h 35m

£366

NewarkLondon

EWR - LGW

EWRLGW

Newark

Sun 8/2

15:30-13:20

2 stops16h 50m

London Gatwick

Tue 17/2

06:35-20:37

2 stops19h 02m

£367

NewarkLondon

EWR - LHR

EWRLHR

Newark

Fri 9/1

17:30-14:35

2 stops16h 05m

London Heathrow

Sun 11/1

06:40-13:25

1 stop11h 45m

£368

NewarkLondon

EWR - LGW

EWRLGW

Newark

Wed 4/2

12:39-09:00

2 stops15h 21m

London Gatwick

Wed 11/2

12:30-00:59

2 stops17h 29m

£370

NewarkLondon

EWR - LHR

EWRLHR

Newark

Thu 15/1

18:55-10:05

1 stop10h 10m

London Heathrow

Tue 20/1

06:00-13:55

1 stop12h 55m

£370

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Thu 15/1

18:25-06:20

Nonstop6h 55m

London Heathrow

Mon 26/1

06:15-13:20

1 stop12h 05m

£373

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 5/2

20:30-16:25

2 stops14h 55m

London Heathrow

Thu 12/2

10:20-17:15

1 stop11h 55m

£425

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Pennsylvania to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from Pennsylvania is in September. Flight prices, which tend to average around £479, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of September, then departing from Pennsylvania during the month August is also very affordable. Most momondo users find prices during this month for around £491.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Pennsylvania to United Kingdom is on a Tuesday. Travellers who choose to depart for United Kingdom on a Tuesday will often find tickets for as low as £498. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Pennsylvania to United Kingdom for around £735.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the morning when flights can be purchased for as low as £494. Try not to purchase tickets at midday because they tend to be around £732. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Pennsylvania to United Kingdom flight route?

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

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £613 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Pennsylvania for as low as £505 on momondo.

What cabin class options are available on Pennsylvania to United Kingdom flights?

There are 3 cabin classes available to choose from on Pennsylvania to United Kingdom 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 United Kingdom flights?

You could potentially save up to 4% on your flight if you consider stops on a Pennsylvania to United Kingdom flight.

Cheap Pennsylvania to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Pennsylvania to United Kingdom

Best price found

£342

Fastest flight time

6h 30m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from Pennsylvania in the past 72 hours is £342. The best return flight deal from Pennsylvania to United Kingdom found on momondo in the last 72 hours is £325.
The fastest flight from Pennsylvania to United Kingdom takes 6h 30m
Direct flights go from Pennsylvania to United Kingdom every day.
There are 1,286 airports in United Kingdom. From Pennsylvania there are direct flights to London Heathrow (LHR).
Search flight deals

  • When did momondo last update prices for flights from Pennsylvania to United Kingdom?

    Prices for flights from Pennsylvania to United Kingdom are updated daily.

  • How many operators does momondo search for flights from Pennsylvania to United Kingdom?

  • How old do you have to be to fly from Pennsylvania to United Kingdom?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Pennsylvania to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Pennsylvania to United Kingdom?

Best airlines flying from Pennsylvania to United Kingdom

Compare and see reviews for airlines that fly from Pennsylvania to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £382Free CancellationRating
6.7
7,608 reviews
Search British Airways flights
Aer LingusPriceFrom £389Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights
JetBluePriceFrom £424Free CancellationRating
7.2
2,898 reviews
Search JetBlue flights
American AirlinesPriceFrom £506Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom £1,025Free CancellationRating
7.4
9,111 reviews
Search United Airlines flights

Why use momondo?

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

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 United Kingdom for you.

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

momondo does allow users to show only those flights to United Kingdom from Pennsylvania which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Pennsylvania to United Kingdom?

momondo provides multiple filters to help you find the best flight to United Kingdom from Pennsylvania. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to United Kingdom from Pennsylvania are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to the United Kingdom

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom £28
Flights to Manchesterfrom £32
Flights to Birminghamfrom £30
Flights to Edinburghfrom £27
Flights to Belfastfrom £30
Flights to Glasgowfrom £29
Flights to Bristolfrom £28
Flights to Newcastle upon Tynefrom £29
Flights to Aberdeenfrom £42
Flights to Liverpoolfrom £30
Flights to Leedsfrom £53
Flights to Invernessfrom £35