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Cheap flights from Philadelphia to the United Kingdom from $281

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 10/11. 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.
Iberia Logo
7:35 pm - 7:50 am
PHL
-
LHR
7h 15mnonstop
Iberia Logo
7:50 am - 5:40 pm
LHR
-
PHL
14h 50m
1 stop
$761Iberia
Mon, Sep 28 - Wed, Sep 30
Multiple Airlines Logo
9:16 pm - 10:00 am
PHL
-
LGW
31h 44m
1 stop
Multiple Airlines Logo
2:00 pm - 8:51 am
LGW
-
PHL
23h 51m
1 stop
$768Multiple Airlines
Sat, Aug 1 - Wed, Aug 26
Aer Lingus Logo
8:25 pm - 11:10 am
PHL
-
LHR
9h 45m
1 stop
Aer Lingus Logo
1:25 pm - 6:55 pm
LHR
-
PHL
10h 30m
1 stop
$782Aer Lingus
Wed, Sep 16 - Wed, Oct 7
Aer Lingus Logo
6:25 pm - 12:50 pm
PHL
-
GLA
13h 25m
1 stop
Aer Lingus Logo
8:35 am - 10:46 pm
GLA
-
PHL
19h 11m
2 stops
$829Aer Lingus
Tue, Jul 14 - Tue, Jul 28
British Airways Logo
6:45 pm - 10:30 am
PHL
-
GLA
10h 45m
1 stop
British Airways Logo
9:30 am - 4:40 pm
GLA
-
PHL
12h 10m
1 stop
$833British Airways
Wed, Aug 19 - Wed, Aug 26
British Airways Logo
6:45 pm - 10:30 am
PHL
-
GLA
10h 45m
1 stop
British Airways Logo
9:30 am - 4:40 pm
GLA
-
PHL
12h 10m
1 stop
$834British Airways
Wed, Aug 19 - Wed, Aug 26
JetBlue Logo
8:28 am - 10:00 am
PHL
-
EDI
20h 32m
1 stop
JetBlue Logo
11:30 am - 9:50 am
EDI
-
PHL
27h 20m
1 stop
$835JetBlue
Mon, Aug 24 - Mon, Sep 28
JetBlue Logo
8:28 am - 10:00 am
PHL
-
EDI
20h 32m
1 stop
JetBlue Logo
11:30 am - 10:32 pm
EDI
-
PHL
16h 02m
1 stop
$839JetBlue
Mon, Aug 24 - Mon, Sep 28
American Airlines Logo
7:40 pm - 12:30 pm
PHL
-
GLA
11h 50m
1 stop
American Airlines Logo
6:25 am - 4:50 pm
GLA
-
PHL
15h 25m
2 stops
$856American Airlines
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
10:20 pm - 4:10 pm
PHL
-
GLA
12h 50m
1 stop
American Airlines Logo
7:00 am - 4:50 pm
GLA
-
PHL
14h 50m
2 stops
$857American Airlines
Mon, Sep 21 - Thu, Oct 1

Aer Lingus flights from Philadelphia to United Kingdom

Our best Aer Lingus deals on Philadelphia to United Kingdom flight tickets
Aer Lingus
Sep 16
PHL8:25 pmPhiladelphia
9h 45m
1 stop
LHR11:10 amLondon Heathrow
Oct 7
LHR1:25 pmLondon Heathrow
10h 30m
1 stop
PHL6:55 pmPhiladelphia
$782
Aer Lingus
Jul 14
PHL6:25 pmPhiladelphia
13h 25m
1 stop
GLA12:50 pmGlasgow Intl
Jul 28
GLA8:35 amGlasgow Intl
19h 11m
2 stops
PHL10:46 pmPhiladelphia
$829
Aer Lingus
Sep 28
PHL8:25 pmPhiladelphia
11h 15m
1 stop
LHR12:40 pmLondon Heathrow
Oct 13
LHR12:00 pmLondon Heathrow
11h 55m
1 stop
PHL6:55 pmPhiladelphia
$868

Scandinavian Airlines flights from Philadelphia to United Kingdom

Our best Scandinavian Airlines deals on Philadelphia to United Kingdom flight tickets
Scandinavian Airlines
Oct 13
PHL9:40 amPhiladelphia
27h 45m
2 stops
EDI6:25 pmEdinburgh Turnhouse
Oct 23
EDI7:10 pmEdinburgh Turnhouse
29h 57m
2 stops
PHL8:07 pmPhiladelphia
$853
Scandinavian Airlines
Sep 12
PHL10:45 amPhiladelphia
17h 35m
2 stops
LHR9:20 amLondon Heathrow
Sep 21
LHR6:40 amLondon Heathrow
18h 18m
2 stops
PHL7:58 pmPhiladelphia
$856
Scandinavian Airlines
Oct 20
PHL4:05 pmPhiladelphia
18h 55m
2 stops
LHR4:00 pmLondon Heathrow
Oct 27
LHR6:40 amLondon Heathrow
19h 58m
2 stops
PHL10:38 pmPhiladelphia
$861

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 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 - LHR

PHLLHR

Philadelphia

Mon 9/28

7:35 pm-7:50 am

Nonstop7h 15m

London Heathrow

Wed 9/30

7:50 am-5:40 pm

1 stop14h 50m

$761

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Sat 8/1

9:16 pm-10:00 am

1 stop31h 44m

London Gatwick

Wed 8/26

2:00 pm-8:51 am

1 stop23h 51m

$768
Quickest round-trip

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 9/16

8:25 pm-11:10 am

1 stop9h 45m

London Heathrow

Wed 10/7

1:25 pm-6:55 pm

1 stop10h 30m

$782

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Tue 7/14

6:25 pm-12:50 pm

1 stop13h 25m

Glasgow Intl

Tue 7/28

8:35 am-10:46 pm

2 stops19h 11m

$829

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Wed 8/19

6:45 pm-10:30 am

1 stop10h 45m

Glasgow Intl

Wed 8/26

9:30 am-4:40 pm

1 stop12h 10m

$833

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Wed 8/19

6:45 pm-10:30 am

1 stop10h 45m

Glasgow Intl

Wed 8/26

9:30 am-4:40 pm

1 stop12h 10m

$834

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Mon 8/24

8:28 am-10:00 am

1 stop20h 32m

Edinburgh Turnhouse

Mon 9/28

11:30 am-9:50 am

1 stop27h 20m

$835

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Mon 8/24

8:28 am-10:00 am

1 stop20h 32m

Edinburgh Turnhouse

Mon 9/28

11:30 am-10:32 pm

1 stop16h 02m

$839

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Wed 10/14

7:40 pm-12:30 pm

1 stop11h 50m

Glasgow Intl

Wed 10/21

6:25 am-4:50 pm

2 stops15h 25m

$856

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Mon 9/21

10:20 pm-4:10 pm

1 stop12h 50m

Glasgow Intl

Thu 10/1

7:00 am-4:50 pm

2 stops14h 50m

$857

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 $787. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,050.

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 $838. 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 $958. 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 $858 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 $708 on momondo.

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

You could potentially save up to 16% 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

$496

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 Philadelphia in the past 72 hours is $496. The best round-trip flight deal from Philadelphia to United Kingdom found on momondo in the last 72 hours is $1,062.
The fastest flight from Philadelphia to United Kingdom takes 6h 30m
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
JetBluePriceFrom $250Free CancellationRating
7.1
2,976 reviews
Search JetBlue flights
Aer LingusPriceFrom $479Free CancellationRating
7.3
1,562 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $500Free CancellationRating
6.7
7,982 reviews
Search British Airways flights
FinnairPriceFrom $513Free CancellationRating
7.6
1,393 reviews
Search Finnair flights
American AirlinesPriceFrom $515Free CancellationRating
7.1
11,664 reviews
Search American Airlines flights
United AirlinesPriceFrom $560Free CancellationRating
7.4
9,726 reviews
Search United Airlines flights
IberiaPriceFrom $567Free CancellationRating
7.0
3,218 reviews
Search Iberia flights
LufthansaPriceFrom $622Free CancellationRating
6.8
8,004 reviews
Search Lufthansa 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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