Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Philadelphia to the United Kingdom from $305

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 9/16. 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.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
7:30 am - 10:00 am
PHL
-
LGW
21h 30m
1 stop
Multiple Airlines Logo
2:00 pm - 11:37 pm
LGW
-
PHL
14h 37m
1 stop
$691Multiple Airlines
Mon, Apr 27 - Wed, May 6
Multiple Airlines Logo
7:30 am - 10:00 am
PHL
-
LGW
21h 30m
1 stop
Multiple Airlines Logo
2:00 pm - 11:37 pm
LGW
-
PHL
14h 37m
1 stop
$696Multiple Airlines
Mon, Apr 27 - Wed, May 6
Aer Lingus Logo
8:25 pm - 12:35 pm
PHL
-
BHX
11h 10m
1 stop
Aer Lingus Logo
8:10 am - 6:55 pm
BHX
-
PHL
15h 45m
1 stop
$782Aer Lingus
Mon, May 4 - Mon, May 18
Aer Lingus Logo
8:25 pm - 10:55 am
PHL
-
MAN
9h 30m
1 stop
Aer Lingus Logo
12:50 pm - 6:55 pm
MAN
-
PHL
11h 05m
1 stop
$802Aer Lingus
Wed, Sep 16 - Tue, Sep 22
British Airways Logo
6:45 pm - 10:05 am
PHL
-
GLA
10h 20m
1 stop
British Airways Logo
7:00 am - 4:40 pm
GLA
-
PHL
14h 40m
1 stop
$806British Airways
Mon, Aug 17 - Thu, Aug 20
American Airlines Logo
7:35 pm - 2:40 pm
PHL
-
GLA
14h 05m
1 stop
American Airlines Logo
5:55 am - 12:20 pm
GLA
-
PHL
11h 25m
1 stop
$819American Airlines
Tue, Aug 4 - Tue, Aug 25
British Airways Logo
6:45 pm - 10:05 am
PHL
-
GLA
10h 20m
1 stop
British Airways Logo
8:50 pm - 4:40 pm
GLA
-
PHL
24h 50m
1 stop
$821British Airways
Mon, Aug 17 - Thu, Aug 20
American Airlines Logo
6:45 pm - 10:05 am
PHL
-
GLA
10h 20m
1 stop
American Airlines Logo
7:00 am - 6:55 pm
GLA
-
PHL
16h 55m
2 stops
$828American Airlines
Mon, Aug 17 - Thu, Aug 20
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
$914Iberia
Tue, May 5 - Tue, May 12
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
$917Iberia
Tue, May 5 - Tue, May 12

Icelandair flights from Philadelphia to United Kingdom

Our best Icelandair deals on Philadelphia to United Kingdom flight tickets
Icelandair
Apr 12
PHL8:30 amPhiladelphia
22h 25m
2 stops
LHR11:55 amLondon Heathrow
Apr 21
LHR1:05 pmLondon Heathrow
23h 30m
2 stops
PHL7:35 amPhiladelphia
$850
Icelandair
May 3
PHL8:25 amPhiladelphia
22h 30m
2 stops
LHR11:55 amLondon Heathrow
May 12
LHR1:05 pmLondon Heathrow
23h 30m
2 stops
PHL7:35 amPhiladelphia
$865
Icelandair
Apr 4
PHL6:30 pmPhiladelphia
15h 10m
2 stops
LGW2:40 pmLondon Gatwick
Apr 14
LGW3:40 pmLondon Gatwick
44h 55m
2 stops
PHL7:35 amPhiladelphia
$927

Scandinavian Airlines flights from Philadelphia to United Kingdom

Our best Scandinavian Airlines deals on Philadelphia to United Kingdom flight tickets
Scandinavian Airlines
May 4
PHL1:58 pmPhiladelphia
14h 22m
2 stops
LHR9:20 amLondon Heathrow
May 7
LHR6:40 amLondon Heathrow
20h 29m
2 stops
PHL10:09 pmPhiladelphia
$823
Scandinavian Airlines
May 4
PHL1:58 pmPhiladelphia
23h 32m
2 stops
LHR6:30 pmLondon Heathrow
May 11
LHR6:40 amLondon Heathrow
20h 29m
2 stops
PHL10:09 pmPhiladelphia
$828
Scandinavian Airlines
May 4
PHL1:58 pmPhiladelphia
21h 27m
3 stops
LHR4:25 pmLondon Heathrow
May 7
LHR6:40 amLondon Heathrow
20h 29m
2 stops
PHL10:09 pmPhiladelphia
$832

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 23, 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 4/27

7:30 am-10:00 am

1 stop21h 30m

London Gatwick

Wed 5/6

2:00 pm-11:37 pm

1 stop14h 37m

$691

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 4/27

7:30 am-10:00 am

1 stop21h 30m

London Gatwick

Wed 5/6

2:00 pm-11:37 pm

1 stop14h 37m

$696

PhiladelphiaBirmingham

PHL - BHX

PHLBHX

Philadelphia

Mon 5/4

8:25 pm-12:35 pm

1 stop11h 10m

Birmingham

Mon 5/18

8:10 am-6:55 pm

1 stop15h 45m

$782
Quickest round-trip

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 9/16

8:25 pm-10:55 am

1 stop9h 30m

Manchester

Tue 9/22

12:50 pm-6:55 pm

1 stop11h 05m

$802

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Mon 8/17

6:45 pm-10:05 am

1 stop10h 20m

Glasgow Intl

Thu 8/20

7:00 am-4:40 pm

1 stop14h 40m

$806

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Tue 8/4

7:35 pm-2:40 pm

1 stop14h 05m

Glasgow Intl

Tue 8/25

5:55 am-12:20 pm

1 stop11h 25m

$819

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Mon 8/17

6:45 pm-10:05 am

1 stop10h 20m

Glasgow Intl

Thu 8/20

8:50 pm-4:40 pm

1 stop24h 50m

$821

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Mon 8/17

6:45 pm-10:05 am

1 stop10h 20m

Glasgow Intl

Thu 8/20

7:00 am-6:55 pm

2 stops16h 55m

$828

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Tue 5/5

8:15 pm-3:15 pm

1 stop14h 00m

London City

Tue 5/12

9:35 am-5:40 pm

1 stop13h 05m

$914

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Tue 5/5

8:15 pm-3:15 pm

1 stop14h 00m

London City

Tue 5/12

9:35 am-5:40 pm

1 stop13h 05m

$917

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $775. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,004.

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 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 $802.
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 $502Free CancellationRating
6.7
7,813 reviews
Search British Airways flights
FinnairPriceFrom $514Free CancellationRating
7.7
1,374 reviews
Search Finnair flights
American AirlinesPriceFrom $515Free CancellationRating
7.1
11,486 reviews
Search American Airlines flights
Aer LingusPriceFrom $522Free CancellationRating
7.2
1,487 reviews
Search Aer Lingus flights
IberiaPriceFrom $577Free CancellationRating
7.0
3,148 reviews
Search Iberia flights
JetBluePriceFrom $614Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
LufthansaPriceFrom $622Free CancellationRating
6.8
7,863 reviews
Search Lufthansa flights
DeltaPriceFrom $766Free CancellationRating
7.9
8,318 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.

An easier way to manage your United Kingdom trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 4/22
Wed 4/29
By creating a price alert you accept our terms of use and privacy policy.

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
Flights to Londonfrom $424
Flights to Manchesterfrom $473
Flights to Edinburghfrom $533
Flights to Glasgowfrom $512
Flights to Birminghamfrom $544
Flights to Newcastle upon Tynefrom $592
Flights to Belfastfrom $625
Flights to Bristolfrom $547
Flights to Invernessfrom $645
Flights to Leedsfrom $586
Flights to Liverpoolfrom $545
Flights to Aberdeenfrom $635