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Cheap flights from Philadelphia to the United Kingdom from $324

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 9/20. 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 round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:57 pm - 10:00 am
PHL
-
LGW
14h 03m
1 stop
Multiple Airlines Logo
2:00 pm - 8:54 am
LGW
-
PHL
23h 54m
1 stop
$788Multiple Airlines
Mon, May 25 - Mon, Jun 1
Multiple Airlines Logo
6:42 am - 10:00 am
PHL
-
LGW
22h 18m
1 stop
Multiple Airlines Logo
2:00 pm - 12:25 am
LGW
-
PHL
15h 25m
1 stop
$791Multiple Airlines
Wed, Aug 12 - Wed, Sep 2
JetBlue Logo
7:00 pm - 10:00 am
PHL
-
EDI
10h 00m
1 stop
JetBlue Logo
11:30 am - 6:04 pm
EDI
-
PHL
11h 34m
1 stop
$839JetBlue
Thu, Sep 10 - Thu, Sep 17
British Airways Logo
6:45 pm - 10:05 am
PHL
-
GLA
10h 20m
1 stop
British Airways Logo
7:35 pm - 4:40 pm
GLA
-
PHL
26h 05m
1 stop
$842British Airways
Mon, Aug 24 - Mon, Aug 31
British Airways Logo
10:20 pm - 1:25 pm
PHL
-
GLA
10h 05m
1 stop
British Airways Logo
3:35 pm - 3:35 pm
GLA
-
PHL
29h 00m
1 stop
$843British Airways
Mon, Aug 17 - Mon, Aug 24
JetBlue Logo
8:28 am - 10:00 am
PHL
-
EDI
20h 32m
1 stop
JetBlue Logo
11:30 am - 6:04 pm
EDI
-
PHL
11h 34m
1 stop
$848JetBlue
Tue, Sep 1 - Thu, Oct 1
American Airlines Logo
7:35 pm - 1:10 pm
PHL
-
MAN
12h 35m
1 stop
American Airlines Logo
7:55 am - 4:00 pm
MAN
-
PHL
13h 05m
1 stop
$869American Airlines
Wed, Sep 2 - Wed, Sep 16
American Airlines Logo
10:15 pm - 4:10 pm
PHL
-
NCL
12h 55m
1 stop
American Airlines Logo
9:35 am - 3:35 pm
NCL
-
PHL
11h 00m
1 stop
$877American Airlines
Tue, Jul 28 - Wed, Aug 26
Iberia Logo
10:20 pm - 5:30 pm
PHL
-
NCL
14h 10m
1 stop
Iberia Logo
9:30 am - 4:40 pm
NCL
-
PHL
12h 10m
1 stop
$899Iberia
Thu, Sep 17 - Fri, Sep 25
Iberia Logo
10:20 pm - 5:30 pm
PHL
-
NCL
14h 10m
1 stop
Iberia Logo
9:30 am - 4:40 pm
NCL
-
PHL
12h 10m
1 stop
$900Iberia
Thu, Sep 17 - Fri, Sep 25

Iberia flights from Philadelphia to United Kingdom

Our best Iberia deals on Philadelphia to United Kingdom flight tickets
Iberia
Oct 5
PHL7:40 pmPhiladelphia
7h 10m
LHR7:50 amLondon Heathrow
Oct 13
LHR6:15 amLondon Heathrow
16h 35m
1 stop
PHL5:50 pmPhiladelphia
$899
Iberia
Sep 17
PHL10:20 pmPhiladelphia
14h 10m
1 stop
NCL5:30 pmNewcastle upon Tyne
Sep 25
NCL9:30 amNewcastle upon Tyne
12h 10m
1 stop
PHL4:40 pmPhiladelphia
$900
Iberia
Sep 14
PHL6:45 pmPhiladelphia
7h 05m
LHR6:50 amLondon Heathrow
Sep 25
LHR6:15 amLondon Heathrow
14h 15m
1 stop
PHL3:30 pmPhiladelphia
$902

TAP AIR PORTUGAL flights from Philadelphia to United Kingdom

Our best TAP AIR PORTUGAL deals on Philadelphia to United Kingdom flight tickets
TAP AIR PORTUGAL
Oct 14
PHL3:25 pmPhiladelphia
24h 05m
2 stops
LGW8:30 pmLondon Gatwick
Oct 21
LGW12:05 pmLondon Gatwick
26h 45m
2 stops
PHL9:50 amPhiladelphia
$902
TAP AIR PORTUGAL
Oct 14
PHL10:45 amPhiladelphia
18h 00m
2 stops
LGW9:45 amLondon Gatwick
Oct 21
LGW12:05 pmLondon Gatwick
26h 45m
2 stops
PHL9:50 amPhiladelphia
$910
TAP AIR PORTUGAL
Oct 5
PHL3:25 pmPhiladelphia
25h 35m
2 stops
LHR10:00 pmLondon Heathrow
Oct 13
LHR6:00 amLondon Heathrow
21h 43m
2 stops
PHL10:43 pmPhiladelphia
$920

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated May 1, 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 round-trip

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 5/25

2:57 pm-10:00 am

1 stop14h 03m

London Gatwick

Mon 6/1

2:00 pm-8:54 am

1 stop23h 54m

$788

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Wed 8/12

6:42 am-10:00 am

1 stop22h 18m

London Gatwick

Wed 9/2

2:00 pm-12:25 am

1 stop15h 25m

$791
Quickest round-trip

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Thu 9/10

7:00 pm-10:00 am

1 stop10h 00m

Edinburgh Turnhouse

Thu 9/17

11:30 am-6:04 pm

1 stop11h 34m

$839

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Mon 8/24

6:45 pm-10:05 am

1 stop10h 20m

Glasgow Intl

Mon 8/31

7:35 pm-4:40 pm

1 stop26h 05m

$842

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Mon 8/17

10:20 pm-1:25 pm

1 stop10h 05m

Glasgow Intl

Mon 8/24

3:35 pm-3:35 pm

1 stop29h 00m

$843

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Tue 9/1

8:28 am-10:00 am

1 stop20h 32m

Edinburgh Turnhouse

Thu 10/1

11:30 am-6:04 pm

1 stop11h 34m

$848

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 9/2

7:35 pm-1:10 pm

1 stop12h 35m

Manchester

Wed 9/16

7:55 am-4:00 pm

1 stop13h 05m

$869

PhiladelphiaNewcastle upon Tyne

PHL - NCL

PHLNCL

Philadelphia

Tue 7/28

10:15 pm-4:10 pm

1 stop12h 55m

Newcastle upon Tyne

Wed 8/26

9:35 am-3:35 pm

1 stop11h 00m

$877

PhiladelphiaNewcastle upon Tyne

PHL - NCL

PHLNCL

Philadelphia

Thu 9/17

10:20 pm-5:30 pm

1 stop14h 10m

Newcastle upon Tyne

Fri 9/25

9:30 am-4:40 pm

1 stop12h 10m

$899

PhiladelphiaNewcastle upon Tyne

PHL - NCL

PHLNCL

Philadelphia

Thu 9/17

10:20 pm-5:30 pm

1 stop14h 10m

Newcastle upon Tyne

Fri 9/25

9:30 am-4:40 pm

1 stop12h 10m

$900

Flights are sorted by cheapest round-trip 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?

In general, February is the cheapest month to fly from Philadelphia to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $45. If you aren’t able to travel to United Kingdom during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $103.

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 Wednesday when prices can be found for as low as $785. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,053.

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

According to our data, the cheapest time of day to fly to United Kingdom is in the afternoon. momondo users have found flights departing from Philadelphia to United Kingdom in the afternoon for as low as $837. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the evening, with an average ticket price of $950. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Philadelphia to United Kingdom flight route?

Fly from Philadelphia to London Heathrow 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 $853 when searching weeks out. 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 $700 on momondo.

Can stopping save me money on Philadelphia to United Kingdom flights?

You could potentially save up to 30% 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

$597

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 $597. The best round-trip flight deal from Philadelphia to United Kingdom found on momondo in the last 72 hours is $1,021.
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 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 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
Aer LingusPriceFrom $484Free CancellationRating
7.3
1,540 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $501Free CancellationRating
6.7
7,936 reviews
Search British Airways flights
FinnairPriceFrom $513Free CancellationRating
7.6
1,392 reviews
Search Finnair flights
American AirlinesPriceFrom $515Free CancellationRating
7.1
11,683 reviews
Search American Airlines flights
United AirlinesPriceFrom $560Free CancellationRating
7.4
9,677 reviews
Search United Airlines flights
IberiaPriceFrom $572Free CancellationRating
7.0
3,204 reviews
Search Iberia flights
JetBluePriceFrom $614Free CancellationRating
7.1
2,970 reviews
Search JetBlue flights
LufthansaPriceFrom $622Free CancellationRating
6.8
7,964 reviews
Search Lufthansa flights
DeltaPriceFrom $766Free CancellationRating
7.9
8,465 reviews
Search Delta flights

Why use momondo?

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

It is quick and easy to find Philadelphia to United Kingdom flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United Kingdom that suits you.

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

Yes. All flights to United Kingdom from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Philadelphia to United Kingdom.

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

Yes. momondo can track prices for Philadelphia to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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
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Flights to Liverpoolfrom $629
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