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Cheap flights from Philadelphia to the United Kingdom from £239

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to the United Kingdom departing on 16/9. 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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Find the cheapest flights from Philadelphia to the United Kingdom

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
22:20 - 07:05
PHL
-
LHR
27h 45m
1 stop
British Airways Logo
06:15 - 17:40
LHR
-
PHL
16h 25m
1 stop
£576British Airways
Sat, 19 Sep - Tue, 22 Sep
Multiple Airlines Logo
14:57 - 10:00
PHL
-
LGW
14h 03m
1 stop
Multiple Airlines Logo
14:00 - 08:54
LGW
-
PHL
23h 54m
1 stop
£582Multiple Airlines
Mon, 25 May - Mon, 1 Jun
United Airlines Logo
19:55 - 17:35
PHL
-
BHX
40h 40m
2 stops
United Airlines Logo
06:05 - 16:05
BHX
-
PHL
15h 00m
1 stop
£595United Airlines
Mon, 14 Sep - Thu, 17 Sep
United Airlines Logo
19:55 - 09:50
PHL
-
BHX
32h 55m
2 stops
United Airlines Logo
06:05 - 14:47
BHX
-
PHL
13h 42m
2 stops
£597United Airlines
Mon, 14 Sep - Thu, 17 Sep
JetBlue Logo
18:33 - 10:00
PHL
-
EDI
10h 27m
1 stop
JetBlue Logo
11:30 - 18:52
EDI
-
PHL
12h 22m
1 stop
£611JetBlue
Wed, 20 May - Wed, 27 May
JetBlue Logo
10:45 - 10:00
PHL
-
EDI
18h 15m
1 stop
JetBlue Logo
11:30 - 22:43
EDI
-
PHL
16h 13m
1 stop
£631JetBlue
Mon, 5 Oct - Mon, 19 Oct
American Airlines Logo
18:45 - 10:30
PHL
-
GLA
10h 45m
1 stop
American Airlines Logo
09:30 - 16:40
GLA
-
PHL
12h 10m
1 stop
£645American Airlines
Sun, 27 Sep - Fri, 9 Oct
Aer Lingus Logo
20:25 - 11:10
PHL
-
LHR
9h 45m
1 stop
Aer Lingus Logo
13:25 - 18:55
LHR
-
PHL
10h 30m
1 stop
£645Aer Lingus
Wed, 16 Sep - Wed, 23 Sep
Aer Lingus Logo
20:25 - 11:10
PHL
-
LHR
9h 45m
1 stop
Aer Lingus Logo
13:25 - 18:55
LHR
-
PHL
10h 30m
1 stop
£646Aer Lingus
Tue, 29 Sep - Tue, 13 Oct
American Airlines Logo
19:40 - 17:50
PHL
-
GLA
17h 10m
1 stop
American Airlines Logo
09:30 - 15:35
GLA
-
PHL
11h 05m
1 stop
£652American Airlines
Wed, 19 Aug - Wed, 26 Aug

Iberia flights from Philadelphia to United Kingdom

Our best Iberia deals on Philadelphia to United Kingdom flight tickets
Iberia
29 Sept
PHL18:45Philadelphia
7h 05m
LHR06:50London Heathrow
20 Oct
LHR07:50London Heathrow
15h 00m
1 stop
PHL17:50Philadelphia
£664
Iberia
29 Sept
PHL18:45Philadelphia
7h 05m
LHR06:50London Heathrow
13 Oct
LHR06:15London Heathrow
16h 35m
1 stop
PHL17:50Philadelphia
£664
Iberia
14 Sept
PHL22:20Philadelphia
7h 00m
LHR10:20London Heathrow
25 Sept
LHR06:15London Heathrow
14h 15m
1 stop
PHL15:30Philadelphia
£666

JetBlue flights from Philadelphia to United Kingdom

Our best JetBlue deals on Philadelphia to United Kingdom flight tickets
JetBlue
20 May
PHL18:33Philadelphia
10h 27m
1 stop
EDI10:00Edinburgh Turnhouse
27 May
EDI11:30Edinburgh Turnhouse
12h 22m
1 stop
PHL18:52Philadelphia
£611
JetBlue
5 Oct
PHL10:45Philadelphia
18h 15m
1 stop
EDI10:00Edinburgh Turnhouse
19 Oct
EDI11:30Edinburgh Turnhouse
16h 13m
1 stop
PHL22:43Philadelphia
£631
JetBlue
12 Sept
PHL19:00Philadelphia
10h 00m
1 stop
EDI10:00Edinburgh Turnhouse
25 Sept
EDI11:30Edinburgh Turnhouse
11h 34m
1 stop
PHL18:04Philadelphia
£633

momondo Fare Finder

 
Customise your flight search to find flights from Philadelphia 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 27 April 2026.
Use the filters below to find and compare flights from Philadelphia to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sat 19/9

22:20-07:05

1 stop27h 45m

London Heathrow

Tue 22/9

06:15-17:40

1 stop16h 25m

£576

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 25/5

14:57-10:00

1 stop14h 03m

London Gatwick

Mon 1/6

14:00-08:54

1 stop23h 54m

£582

PhiladelphiaBirmingham

PHL - BHX

PHLBHX

Philadelphia

Mon 14/9

19:55-17:35

2 stops40h 40m

Birmingham

Thu 17/9

06:05-16:05

1 stop15h 00m

£595

PhiladelphiaBirmingham

PHL - BHX

PHLBHX

Philadelphia

Mon 14/9

19:55-09:50

2 stops32h 55m

Birmingham

Thu 17/9

06:05-14:47

2 stops13h 42m

£597

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Wed 20/5

18:33-10:00

1 stop10h 27m

Edinburgh Turnhouse

Wed 27/5

11:30-18:52

1 stop12h 22m

£611

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Mon 5/10

10:45-10:00

1 stop18h 15m

Edinburgh Turnhouse

Mon 19/10

11:30-22:43

1 stop16h 13m

£631

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Sun 27/9

18:45-10:30

1 stop10h 45m

Glasgow Intl

Fri 9/10

09:30-16:40

1 stop12h 10m

£645
Fastest return journey

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 16/9

20:25-11:10

1 stop9h 45m

London Heathrow

Wed 23/9

13:25-18:55

1 stop10h 30m

£645

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 29/9

20:25-11:10

1 stop9h 45m

London Heathrow

Tue 13/10

13:25-18:55

1 stop10h 30m

£646

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Wed 19/8

19:40-17:50

1 stop17h 10m

Glasgow Intl

Wed 26/8

09:30-15:35

1 stop11h 05m

£652

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 Philadelphia 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 Philadelphia is in September. Flight prices, which tend to average around £473, 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 Philadelphia during the month November is also very affordable. Most momondo users find prices during this month for around £497.

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

The cheapest day to depart from Philadelphia 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 £496. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to United Kingdom for around £786.

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 afternoon when flights can be purchased for as low as £580. Try not to purchase tickets in the evening because they tend to be around £625. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Philadelphia to United Kingdom flight route?

Fly from Philadelphia to Edinburgh Turnhouse for the best Philadelphia - United Kingdom flight prices

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

You are more likely to see cheaper flights to United Kingdom from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £630 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 Philadelphia for as low as £517 on momondo.

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

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

You could potentially save up to 37% on your flight if you consider stops on a Philadelphia to United Kingdom flight.

Cheap Philadelphia to United Kingdom flight deals and tips

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

Best price found

£435

Fastest flight time

6h 35m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from Philadelphia in the past 72 hours is £435. The best return flight deal from Philadelphia to United Kingdom found on momondo in the last 72 hours is £679.
The fastest flight from Philadelphia to United Kingdom takes 6h 35m
Direct flights go from Philadelphia to United Kingdom every day.
There are 1,286 airports in United Kingdom. From Philadelphia there are direct flights to London Heathrow (LHR), Edinburgh Turnhouse (EDI).
Search flight deals

Frequently asked questions about flying from Philadelphia to the United Kingdom

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

    Prices for flights from Philadelphia Airport to United Kingdom are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to United Kingdom.

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

    The travel and health documents you'll need for your trip to United Kingdom may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United Kingdom. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Philadelphia to United Kingdom

Compare and see reviews for airlines that fly from Philadelphia to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £381Free CancellationRating
6.7
7,923 reviews
Search British Airways flights
Aer LingusPriceFrom £388Free CancellationRating
7.3
1,534 reviews
Search Aer Lingus flights
JetBluePriceFrom £423Free CancellationRating
7.1
2,967 reviews
Search JetBlue flights
American AirlinesPriceFrom £505Free CancellationRating
7.1
11,671 reviews
Search American Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to United Kingdom from Philadelphia.

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

Flights from Philadelphia to United Kingdom with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Philadelphia to United Kingdom flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to United Kingdom from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your United Kingdom trip

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Find better results for your trip to the United Kingdom

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Popular flights according to clicks in the last 7 days on momondo
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