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Cheap flights from Philadelphia to the United Kingdom from $181

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 9/27. 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

Discover deals from 900+ travel sites with momondo.

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
8:25 pm - 11:30 am
PHL
-
GLA
10h 05m
1 stop
Multiple Airlines Logo
7:00 pm - 12:20 am
GLA
-
PHL
34h 20m
2 stops
$711Multiple Airlines
Sun, Sep 27 - Thu, Oct 8
Multiple Airlines Logo
8:25 pm - 10:40 am
PHL
-
EDI
9h 15m
1 stop
Multiple Airlines Logo
6:10 am - 12:20 am
EDI
-
PHL
23h 10m
2 stops
$719Multiple Airlines
Tue, Oct 6 - Mon, Oct 12
Multiple Airlines Logo
8:25 pm - 11:30 am
PHL
-
GLA
10h 05m
1 stop
Multiple Airlines Logo
9:45 pm - 9:10 am
GLA
-
PHL
40h 25m
2 stops
$728Multiple Airlines
Sun, Oct 4 - Sun, Oct 11
United Airlines Logo
3:08 pm - 11:50 am
PHL
-
EDI
15h 42m
2 stops
United Airlines Logo
9:00 am - 10:09 am
EDI
-
PHL
30h 09m
1 stop
$758United Airlines
Wed, Oct 7 - Fri, Oct 9
United Airlines Logo
6:55 pm - 11:50 am
PHL
-
EDI
35h 55m
2 stops
United Airlines Logo
9:00 am - 10:09 am
EDI
-
PHL
30h 09m
1 stop
$769United Airlines
Sun, Oct 4 - Wed, Oct 7
JetBlue Logo
9:59 am - 10:00 am
PHL
-
EDI
19h 01m
1 stop
JetBlue Logo
11:30 am - 8:01 pm
EDI
-
PHL
13h 31m
1 stop
$779JetBlue
Wed, Aug 5 - Wed, Aug 26
JetBlue Logo
9:12 am - 6:30 am
PHL
-
LHR
16h 18m
1 stop
JetBlue Logo
8:40 am - 8:01 pm
LHR
-
PHL
16h 21m
1 stop
$873JetBlue
Mon, Aug 24 - Mon, Aug 31
Aer Lingus Logo
5:30 pm - 8:05 am
PHL
-
LHR
9h 35m
1 stop
Aer Lingus Logo
9:50 am - 4:00 pm
LHR
-
PHL
11h 10m
1 stop
$878Aer Lingus
Wed, Dec 2 - Tue, Dec 8
Lufthansa Logo
5:40 pm - 5:55 pm
PHL
-
LCY
19h 15m
1 stop
Lufthansa Logo
9:15 am - 4:05 pm
LCY
-
PHL
11h 50m
1 stop
$930Lufthansa
Wed, Oct 7 - Tue, Oct 13
Aer Lingus Logo
6:30 pm - 7:30 pm
PHL
-
SOU
20h 00m
1 stop
Aer Lingus Logo
9:20 am - 6:55 pm
SOU
-
PHL
14h 35m
1 stop
$1,078Aer Lingus
Mon, Aug 17 - Sun, Aug 23

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Iberia flights from Philadelphia to United Kingdom

Our best Iberia deals on Philadelphia to United Kingdom flight tickets
Iberia
Oct 14
PHL10:20 pmPhiladelphia
7h 00m
LHR10:20 amLondon Heathrow
Oct 21
LHR9:15 amLondon Heathrow
13h 35m
1 stop
PHL5:50 pmPhiladelphia
$894
Iberia
Jul 7
PHL8:15 pmPhiladelphia
14h 00m
1 stop
LCY3:15 pmLondon City
Aug 14
LCY9:50 amLondon City
12h 50m
1 stop
PHL5:40 pmPhiladelphia
$1,566

Delta flights from Philadelphia to United Kingdom

Our best Delta deals on Philadelphia to United Kingdom flight tickets
Delta
Sep 1
PHL1:15 pmPhiladelphia
21h 45m
2 stops
LGW4:00 pmLondon Gatwick
Sep 12
LGW10:25 amLondon Gatwick
19h 16m
2 stops
PHL12:41 amPhiladelphia
$874
Delta
Sep 2
PHL9:30 amPhiladelphia
18h 55m
2 stops
LGW9:25 amLondon Gatwick
Sep 10
LGW10:25 amLondon Gatwick
27h 04m
2 stops
PHL8:29 amPhiladelphia
$875
Delta
Oct 3
PHL11:00 amPhiladelphia
21h 15m
2 stops
LCY1:15 pmLondon City
Oct 12
LCY10:00 amLondon City
17h 38m
2 stops
PHL10:38 pmPhiladelphia
$891

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 June 30, 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

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Sun 9/27

8:25 pm-11:30 am

1 stop10h 05m

Glasgow Intl

Thu 10/8

7:00 pm-12:20 am

2 stops34h 20m

$711

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Tue 10/6

8:25 pm-10:40 am

1 stop9h 15m

Edinburgh Turnhouse

Mon 10/12

6:10 am-12:20 am

2 stops23h 10m

$719

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Sun 10/4

8:25 pm-11:30 am

1 stop10h 05m

Glasgow Intl

Sun 10/11

9:45 pm-9:10 am

2 stops40h 25m

$728

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Wed 10/7

3:08 pm-11:50 am

2 stops15h 42m

Edinburgh Turnhouse

Fri 10/9

9:00 am-10:09 am

1 stop30h 09m

$758

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Sun 10/4

6:55 pm-11:50 am

2 stops35h 55m

Edinburgh Turnhouse

Wed 10/7

9:00 am-10:09 am

1 stop30h 09m

$769

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Wed 8/5

9:59 am-10:00 am

1 stop19h 01m

Edinburgh Turnhouse

Wed 8/26

11:30 am-8:01 pm

1 stop13h 31m

$779

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 8/24

9:12 am-6:30 am

1 stop16h 18m

London Heathrow

Mon 8/31

8:40 am-8:01 pm

1 stop16h 21m

$873
Quickest round-trip

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 12/2

5:30 pm-8:05 am

1 stop9h 35m

London Heathrow

Tue 12/8

9:50 am-4:00 pm

1 stop11h 10m

$878

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Wed 10/7

5:40 pm-5:55 pm

1 stop19h 15m

London City

Tue 10/13

9:15 am-4:05 pm

1 stop11h 50m

$930

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 8/17

6:30 pm-7:30 pm

1 stop20h 00m

Southampton Eastleigh

Sun 8/23

9:20 am-6:55 pm

1 stop14h 35m

$1,078

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 $812. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,067.

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 $872. 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 $1,018. 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 $898 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 $650 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 18% 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

$413

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 $413. The best round-trip flight deal from Philadelphia to United Kingdom found on momondo in the last 72 hours is $994.
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 $479Free CancellationRating
7.3
1,634 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $498Free CancellationRating
6.7
8,089 reviews
Search British Airways flights
American AirlinesPriceFrom $510Free CancellationRating
7.1
11,766 reviews
Search American Airlines flights
FinnairPriceFrom $513Free CancellationRating
7.6
1,415 reviews
Search Finnair flights
IberiaPriceFrom $559Free CancellationRating
7.0
3,248 reviews
Search Iberia flights
LufthansaPriceFrom $622Free CancellationRating
6.8
8,109 reviews
Search Lufthansa flights
JetBluePriceFrom $638Free CancellationRating
7.1
3,012 reviews
Search JetBlue 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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