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Cheap flights from Philadelphia to the United Kingdom from $323

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 4/26. 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.
Scandinavian Airlines Logo
9:40 am - 9:20 am
PHL
-
LHR
18h 40m
2 stops
Scandinavian Airlines Logo
6:40 am - 7:58 pm
LHR
-
PHL
18h 18m
2 stops
$723Scandinavian Airlines
Tue, Aug 25 - Wed, Sep 2
Multiple Airlines Logo
6:30 pm - 8:25 pm
PHL
-
LGW
20h 55m
2 stops
Multiple Airlines Logo
2:00 pm - 7:41 am
LGW
-
PHL
22h 41m
1 stop
$728Multiple Airlines
Mon, Apr 13 - Wed, Apr 29
Aer Lingus Logo
8:25 pm - 12:40 pm
PHL
-
LHR
11h 15m
1 stop
Aer Lingus Logo
1:25 pm - 6:55 pm
LHR
-
PHL
10h 30m
1 stop
$731Aer Lingus
Mon, Aug 17 - Thu, Aug 20
Aer Lingus Logo
8:25 pm - 12:40 pm
PHL
-
LHR
11h 15m
1 stop
Aer Lingus Logo
12:00 pm - 6:55 pm
LHR
-
PHL
11h 55m
1 stop
$759Aer Lingus
Mon, Sep 21 - Tue, Oct 13
Iberia Logo
8:15 pm - 3:15 pm
PHL
-
LCY
14h 00m
1 stop
Iberia Logo
9:35 am - 5:40 pm
LCY
-
PHL
13h 05m
1 stop
$775Iberia
Mon, Apr 27 - Wed, May 6
British Airways Logo
10:37 am - 1:05 pm
PHL
-
MAN
21h 28m
2 stops
British Airways Logo
9:30 am - 5:40 pm
MAN
-
PHL
13h 10m
1 stop
$869British Airways
Tue, Sep 1 - Wed, Sep 23
British Airways Logo
6:45 pm - 1:05 pm
PHL
-
MAN
13h 20m
1 stop
British Airways Logo
9:30 am - 5:40 pm
MAN
-
PHL
13h 10m
1 stop
$870British Airways
Tue, Sep 1 - Wed, Sep 23
American Airlines Logo
10:20 pm - 2:40 pm
PHL
-
GLA
11h 20m
1 stop
American Airlines Logo
8:35 am - 3:35 pm
GLA
-
PHL
12h 00m
1 stop
$870American Airlines
Tue, Aug 4 - Tue, Aug 25
American Airlines Logo
10:20 pm - 4:45 pm
PHL
-
GLA
13h 25m
1 stop
American Airlines Logo
5:55 am - 3:35 pm
GLA
-
PHL
14h 40m
1 stop
$871American Airlines
Tue, Aug 4 - Tue, Aug 25
Iberia Logo
7:45 pm - 3:15 pm
PHL
-
LCY
14h 30m
1 stop
Iberia Logo
9:35 am - 5:40 pm
LCY
-
PHL
13h 05m
1 stop
$958Iberia
Tue, May 12 - Tue, May 19

Aer Lingus flights from Philadelphia to United Kingdom

Our best Aer Lingus deals on Philadelphia to United Kingdom flight tickets
Aer Lingus
Aug 17
PHL8:25 pmPhiladelphia
11h 15m
1 stop
LHR12:40 pmLondon Heathrow
Aug 20
LHR1:25 pmLondon Heathrow
10h 30m
1 stop
PHL6:55 pmPhiladelphia
$731
Aer Lingus
Sep 21
PHL8:25 pmPhiladelphia
11h 15m
1 stop
LHR12:40 pmLondon Heathrow
Oct 13
LHR12:00 pmLondon Heathrow
11h 55m
1 stop
PHL6:55 pmPhiladelphia
$759
Aer Lingus
Sep 16
PHL8:25 pmPhiladelphia
9h 45m
1 stop
LHR11:10 amLondon Heathrow
Sep 30
LHR12:00 pmLondon Heathrow
11h 55m
1 stop
PHL6:55 pmPhiladelphia
$825

Lufthansa flights from Philadelphia to United Kingdom

Our best Lufthansa deals on Philadelphia to United Kingdom flight tickets
Lufthansa
Apr 7
PHL5:40 pmPhiladelphia
18h 55m
1 stop
MAN5:35 pmManchester
Apr 14
MAN5:55 amManchester
15h 10m
1 stop
PHL4:05 pmPhiladelphia
$835
Lufthansa
Apr 7
PHL5:40 pmPhiladelphia
18h 55m
1 stop
MAN5:35 pmManchester
Apr 14
MAN7:00 amManchester
14h 05m
2 stops
PHL4:05 pmPhiladelphia
$844
Lufthansa
Apr 7
PHL5:40 pmPhiladelphia
18h 55m
1 stop
MAN5:35 pmManchester
Apr 14
MAN7:00 amManchester
14h 05m
2 stops
PHL4:05 pmPhiladelphia
$845

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 31, 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

Tue 8/25

9:40 am-9:20 am

2 stops18h 40m

London Heathrow

Wed 9/2

6:40 am-7:58 pm

2 stops18h 18m

$723

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/13

6:30 pm-8:25 pm

2 stops20h 55m

London Gatwick

Wed 4/29

2:00 pm-7:41 am

1 stop22h 41m

$728
Quickest round-trip

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 8/17

8:25 pm-12:40 pm

1 stop11h 15m

London Heathrow

Thu 8/20

1:25 pm-6:55 pm

1 stop10h 30m

$731

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 9/21

8:25 pm-12:40 pm

1 stop11h 15m

London Heathrow

Tue 10/13

12:00 pm-6:55 pm

1 stop11h 55m

$759

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Mon 4/27

8:15 pm-3:15 pm

1 stop14h 00m

London City

Wed 5/6

9:35 am-5:40 pm

1 stop13h 05m

$775

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Tue 9/1

10:37 am-1:05 pm

2 stops21h 28m

Manchester

Wed 9/23

9:30 am-5:40 pm

1 stop13h 10m

$869

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Tue 9/1

6:45 pm-1:05 pm

1 stop13h 20m

Manchester

Wed 9/23

9:30 am-5:40 pm

1 stop13h 10m

$870

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Tue 8/4

10:20 pm-2:40 pm

1 stop11h 20m

Glasgow Intl

Tue 8/25

8:35 am-3:35 pm

1 stop12h 00m

$870

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Tue 8/4

10:20 pm-4:45 pm

1 stop13h 25m

Glasgow Intl

Tue 8/25

5:55 am-3:35 pm

1 stop14h 40m

$871

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Tue 5/12

7:45 pm-3:15 pm

1 stop14h 30m

London City

Tue 5/19

9:35 am-5:40 pm

1 stop13h 05m

$958

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 $647. 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 $779. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,017.

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 $840. 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 $904. 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 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

$464

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 $464. The best round-trip flight deal from Philadelphia to United Kingdom found on momondo in the last 72 hours is $847.
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 London Heathrow (LHR), 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 $502Free CancellationRating
6.7
7,839 reviews
Search British Airways flights
FinnairPriceFrom $513Free CancellationRating
7.7
1,376 reviews
Search Finnair flights
American AirlinesPriceFrom $515Free CancellationRating
7.1
11,542 reviews
Search American Airlines flights
Aer LingusPriceFrom $522Free CancellationRating
7.2
1,493 reviews
Search Aer Lingus flights
IberiaPriceFrom $573Free CancellationRating
7.0
3,164 reviews
Search Iberia flights
JetBluePriceFrom $614Free CancellationRating
7.2
2,905 reviews
Search JetBlue flights
LufthansaPriceFrom $622Free CancellationRating
6.8
7,880 reviews
Search Lufthansa flights
DeltaPriceFrom $766Free CancellationRating
7.9
8,363 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 Leedsfrom $640
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Flights to Aberdeenfrom $635