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Cheap flights from Philadelphia to the United Kingdom from $228

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 3/24. 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
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:25 pm - 5:05 pm
PHL
-
STN
15h 40m
1 stop
Multiple Airlines Logo
6:30 am - 6:55 pm
STN
-
PHL
17h 25m
1 stop
$643Multiple Airlines
Mon, Sep 7 - Wed, Sep 16
Multiple Airlines Logo
8:25 pm - 12:40 pm
PHL
-
LGW
11h 15m
1 stop
Multiple Airlines Logo
9:45 am - 6:55 pm
LGW
-
PHL
14h 10m
1 stop
$647Multiple Airlines
Mon, Sep 7 - Wed, Sep 16
Iberia Logo
10:20 pm - 4:45 pm
PHL
-
GLA
13h 25m
1 stop
Iberia Logo
10:55 am - 9:00 pm
GLA
-
PHL
15h 05m
2 stops
$704Iberia
Tue, Aug 4 - Tue, Aug 25
Aer Lingus Logo
8:25 pm - 11:40 am
PHL
-
EDI
10h 15m
1 stop
Aer Lingus Logo
1:25 pm - 6:55 pm
EDI
-
PHL
10h 30m
1 stop
$707Aer Lingus
Tue, Apr 28 - Tue, May 5
British Airways Logo
6:40 pm - 9:45 pm
PHL
-
MAN
22h 05m
1 stop
British Airways Logo
10:35 am - 4:40 pm
MAN
-
PHL
11h 05m
1 stop
$730British Airways
Wed, Apr 29 - Fri, May 8
British Airways Logo
5:55 pm - 8:00 am
PHL
-
LHR
9h 05m
1 stop
British Airways Logo
12:30 pm - 3:30 pm
LHR
-
PHL
8h 00mnonstop
$734British Airways
Sun, May 3 - Tue, May 12
Aer Lingus Logo
8:25 pm - 11:10 am
PHL
-
LHR
9h 45m
1 stop
Aer Lingus Logo
12:00 pm - 6:55 pm
LHR
-
PHL
11h 55m
1 stop
$741Aer Lingus
Mon, Apr 20 - Mon, Apr 27
American Airlines Logo
10:10 pm - 5:40 pm
PHL
-
GLA
14h 30m
1 stop
American Airlines Logo
6:25 am - 3:30 pm
GLA
-
PHL
14h 05m
1 stop
$743American Airlines
Mon, Mar 30 - Wed, Apr 29
American Airlines Logo
7:35 pm - 12:30 pm
PHL
-
GLA
11h 55m
1 stop
American Airlines Logo
7:30 am - 3:30 pm
GLA
-
PHL
13h 00m
1 stop
$744American Airlines
Wed, Apr 8 - Wed, Apr 15
Iberia Logo
7:45 pm - 3:15 pm
PHL
-
LCY
14h 30m
1 stop
Iberia Logo
9:50 am - 5:40 pm
LCY
-
PHL
12h 50m
1 stop
$818Iberia
Mon, May 11 - Tue, May 19

Scandinavian Airlines flights from Philadelphia to United Kingdom

Our best Scandinavian Airlines deals on Philadelphia to United Kingdom flight tickets
Scandinavian Airlines
Sep 8
PHL9:40 amPhiladelphia
25h 20m
2 stops
LHR4:00 pmLondon Heathrow
Sep 22
LHR6:40 amLondon Heathrow
18h 18m
2 stops
PHL7:58 pmPhiladelphia
$727
Scandinavian Airlines
Sep 8
PHL9:40 amPhiladelphia
25h 20m
2 stops
LHR4:00 pmLondon Heathrow
Sep 15
LHR6:40 amLondon Heathrow
18h 18m
2 stops
PHL7:58 pmPhiladelphia
$745
Scandinavian Airlines
Sep 8
PHL9:40 amPhiladelphia
25h 20m
2 stops
LHR4:00 pmLondon Heathrow
Sep 22
LHR7:05 amLondon Heathrow
17h 53m
3 stops
PHL7:58 pmPhiladelphia
$753

JetBlue flights from Philadelphia to United Kingdom

Our best JetBlue deals on Philadelphia to United Kingdom flight tickets
JetBlue
Apr 5
PHL6:00 amPhiladelphia
19h 30m
1 stop
LHR6:30 amLondon Heathrow
Apr 14
LHR8:40 amLondon Heathrow
13h 58m
1 stop
PHL5:38 pmPhiladelphia
$691
JetBlue
Mar 24
PHL8:20 pmPhiladelphia
30h 35m
1 stop
LHR6:55 amLondon Heathrow
Mar 31
LHR8:40 amLondon Heathrow
19h 01m
1 stop
PHL10:41 pmPhiladelphia
$728
JetBlue
Aug 22
PHL9:12 amPhiladelphia
19h 23m
1 stop
LGW9:35 amLondon Gatwick
Aug 29
LGW12:20 pmLondon Gatwick
12h 29m
1 stop
PHL7:49 pmPhiladelphia
$736

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 March 15, 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 - STN

PHLSTN

Philadelphia

Mon 9/7

8:25 pm-5:05 pm

1 stop15h 40m

London Stansted

Wed 9/16

6:30 am-6:55 pm

1 stop17h 25m

$643

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 9/7

8:25 pm-12:40 pm

1 stop11h 15m

London Gatwick

Wed 9/16

9:45 am-6:55 pm

1 stop14h 10m

$647

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Tue 8/4

10:20 pm-4:45 pm

1 stop13h 25m

Glasgow Intl

Tue 8/25

10:55 am-9:00 pm

2 stops15h 05m

$704

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Tue 4/28

8:25 pm-11:40 am

1 stop10h 15m

Edinburgh Turnhouse

Tue 5/5

1:25 pm-6:55 pm

1 stop10h 30m

$707

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 4/29

6:40 pm-9:45 pm

1 stop22h 05m

Manchester

Fri 5/8

10:35 am-4:40 pm

1 stop11h 05m

$730
Quickest round-trip

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sun 5/3

5:55 pm-8:00 am

1 stop9h 05m

London Heathrow

Tue 5/12

12:30 pm-3:30 pm

Nonstop8h 00m

$734

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 4/20

8:25 pm-11:10 am

1 stop9h 45m

London Heathrow

Mon 4/27

12:00 pm-6:55 pm

1 stop11h 55m

$741

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Mon 3/30

10:10 pm-5:40 pm

1 stop14h 30m

Glasgow Intl

Wed 4/29

6:25 am-3:30 pm

1 stop14h 05m

$743

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Wed 4/8

7:35 pm-12:30 pm

1 stop11h 55m

Glasgow Intl

Wed 4/15

7:30 am-3:30 pm

1 stop13h 00m

$744

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Mon 5/11

7:45 pm-3:15 pm

1 stop14h 30m

London City

Tue 5/19

9:50 am-5:40 pm

1 stop12h 50m

$818

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, September 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 $646. If you aren’t able to travel to United Kingdom during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $664.

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 $771. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,001.

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 $831. 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 $888. 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 to 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 $828 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 $691 on momondo.

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

There are 4 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 34% 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

$432

Fastest flight time

6h 40m

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 $432. The best round-trip flight deal from Philadelphia to United Kingdom found on momondo in the last 72 hours is $733.
The fastest flight from Philadelphia to United Kingdom takes 6h 40m
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 Edinburgh Turnhouse (EDI).
Search flight deals

  • 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
British AirwaysPriceFrom $505Free CancellationRating
6.7
7,794 reviews
Search British Airways flights
FinnairPriceFrom $514Free CancellationRating
7.6
1,371 reviews
Search Finnair flights
American AirlinesPriceFrom $515Free CancellationRating
7.1
11,470 reviews
Search American Airlines flights
Aer LingusPriceFrom $522Free CancellationRating
7.2
1,477 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $560Free CancellationRating
7.4
9,426 reviews
Search United Airlines flights
JetBluePriceFrom $589Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
IberiaPriceFrom $592Free CancellationRating
7.0
3,136 reviews
Search Iberia flights
LufthansaPriceFrom $622Free CancellationRating
6.8
7,850 reviews
Search Lufthansa flights
DeltaPriceFrom $766Free CancellationRating
7.9
8,294 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

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