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Cheap flights from Philadelphia to the United Kingdom from £148

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 26/1. 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 return flights

Enter your travel dates to find the best prices.
British Airways Logo
19:35 - 10:45PHL-GLA
11h 10m1 stop
British Airways Logo
17:30 - 16:40GLA-PHL
28h 10m1 stop
£401British Airways
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Sun, 22 Mar - Mon, 30 Mar
Virgin Atlantic Logo
14:31 - 10:30PHL-MAN
14h 59m1 stop
Virgin Atlantic Logo
13:30 - 22:50MAN-PHL
14h 20m1 stop
£403Virgin Atlantic
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Wed, 14 Jan - Wed, 21 Jan
American Airlines Logo
20:45 - 13:55PHL-MAN
13h 10m1 stop
American Airlines Logo
05:40 - 14:10MAN-PHL
12h 30m1 stop
£426American Airlines
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Wed, 11 Mar - Thu, 19 Mar
American Airlines Logo
16:44 - 12:50PHL-GLA
15h 06m2 stops
American Airlines Logo
09:45 - 20:34GLA-PHL
15h 49m2 stops
£428American Airlines
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Wed, 14 Jan - Wed, 21 Jan
JetBlue Logo
13:30 - 06:55PHL-LHR
12h 25m1 stop
JetBlue Logo
09:20 - 18:23LHR-PHL
14h 03m1 stop
£481JetBlue
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Thu, 29 Jan - Mon, 2 Feb
Iberia Logo
13:55 - 08:50PHL-LCY
13h 55m2 stops
Iberia Logo
19:15 - 15:05LCY-PHL
47h 50m2 stops
£490Iberia
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Wed, 4 Mar - Sun, 8 Mar
JetBlue Logo
17:03 - 09:15PHL-EDI
11h 12m1 stop
JetBlue Logo
12:10 - 19:30EDI-PHL
12h 20m1 stop
£496JetBlue
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Wed, 22 Apr - Thu, 7 May
Iberia Logo
20:00 - 14:05PHL-LCY
13h 05m1 stop
Iberia Logo
07:50 - 15:35LCY-PHL
12h 45m1 stop
£502Iberia
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Wed, 18 Feb - Wed, 25 Feb
Aer Lingus Logo
17:30 - 11:55PHL-SOU
13h 25m1 stop
Aer Lingus Logo
20:10 - 17:00SOU-PHL
24h 50m1 stop
£642Aer Lingus
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Tue, 3 Mar - Mon, 9 Mar
Aer Lingus Logo
15:02 - 11:55PHL-SOU
15h 53m2 stops
Aer Lingus Logo
20:10 - 17:00SOU-PHL
24h 50m1 stop
£646Aer Lingus
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Tue, 3 Mar - Mon, 9 Mar

Scandinavian Airlines flights from Philadelphia to United Kingdom

Our best Scandinavian Airlines deals on Philadelphia to United Kingdom flight tickets
Scandinavian Airlines
17 Jan
PHL12:11Philadelphia
22h 49m
2 stops
LHR16:00London Heathrow
23 Jan
LHR06:40London Heathrow
21h 10m
2 stops
PHL22:50Philadelphia
£476
Find similar
Scandinavian Airlines
15 Jan
PHL11:30Philadelphia
23h 30m
2 stops
LHR16:00London Heathrow
19 Jan
LHR07:05London Heathrow
22h 16m
3 stops
PHL00:21Philadelphia
£478
Find similar
Scandinavian Airlines
29 Jan
PHL14:30Philadelphia
20h 30m
2 stops
LHR16:00London Heathrow
8 Feb
LHR21:05London Heathrow
29h 11m
3 stops
PHL21:16Philadelphia
£481
Find similar

Iberia flights from Philadelphia to United Kingdom

Our best Iberia deals on Philadelphia to United Kingdom flight tickets
Iberia
16 Apr
PHL22:20Philadelphia
7h 00m
LHR10:20London Heathrow
20 Apr
LHR18:15London Heathrow
24h 45m
1 stop
PHL14:00Philadelphia
£485
Find similar
Iberia
4 Mar
PHL13:55Philadelphia
13h 55m
2 stops
LCY08:50London City
8 Mar
LCY19:15London City
47h 50m
2 stops
PHL15:05Philadelphia
£490
Find similar
Iberia
18 Feb
PHL20:00Philadelphia
13h 05m
1 stop
LCY14:05London City
25 Feb
LCY07:50London City
12h 45m
1 stop
PHL15:35Philadelphia
£502
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momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 2 December 2025.
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

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Sun 22/3

19:35-10:45

1 stop11h 10m

Glasgow Intl

Mon 30/3

17:30-16:40

1 stop28h 10m

£401

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 14/1

14:31-10:30

1 stop14h 59m

Manchester

Wed 21/1

13:30-22:50

1 stop14h 20m

£403

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 11/3

20:45-13:55

1 stop13h 10m

Manchester

Thu 19/3

05:40-14:10

1 stop12h 30m

£426

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Wed 14/1

16:44-12:50

2 stops15h 06m

Glasgow Intl

Wed 21/1

09:45-20:34

2 stops15h 49m

£428

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Thu 29/1

13:30-06:55

1 stop12h 25m

London Heathrow

Mon 2/2

09:20-18:23

1 stop14h 03m

£481

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Wed 4/3

13:55-08:50

2 stops13h 55m

London City

Sun 8/3

19:15-15:05

2 stops47h 50m

£490

PhiladelphiaEdinburgh

PHL - EDI

PHLEDI

Philadelphia

Wed 22/4

17:03-09:15

1 stop11h 12m

Edinburgh Turnhouse

Thu 7/5

12:10-19:30

1 stop12h 20m

£496

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Wed 18/2

20:00-14:05

1 stop13h 05m

London City

Wed 25/2

07:50-15:35

1 stop12h 45m

£502

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 3/3

17:30-11:55

1 stop13h 25m

Southampton Eastleigh

Mon 9/3

20:10-17:00

1 stop24h 50m

£642

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 3/3

15:02-11:55

2 stops15h 53m

Southampton Eastleigh

Mon 9/3

20:10-17:00

1 stop24h 50m

£646

Flights are sorted by cheapest return 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?

The cheapest month to fly to United Kingdom from Philadelphia is in September. Flight prices, which tend to average around £490, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of September, then departing from Philadelphia during the month August is also very affordable. Most momondo users find prices during this month for around £498.

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 Tuesday. Travellers who choose to depart for United Kingdom on a Tuesday will often find tickets for as low as £508. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to United Kingdom for around £745.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the morning when flights can be purchased for as low as £503. Try not to purchase tickets at midday because they tend to be around £747. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Philadelphia to United Kingdom flight route?

Fly from Philadelphia to Edinburgh Turnhouse 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 £615 when searching weeks before you fly. 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 £526 on momondo.

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

There are 3 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 43% 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

£661

Fastest flight time

6h 40m

Direct flights

Every day

Airports in United Kingdom

2 airports
The best one-way flight to United Kingdom from Philadelphia in the past 72 hours is £661. The best return flight deal from Philadelphia to United Kingdom found on momondo in the last 72 hours is £405.
The fastest flight from Philadelphia to United Kingdom takes 6h 40m
Direct flights go from Philadelphia to United Kingdom every day.
There are 2 airports near United Kingdom: London Heathrow (LHR), Edinburgh Turnhouse (EDI)
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  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 £390Free CancellationRating
6.7
7,549 reviews
Search British Airways flights
Aer LingusPriceFrom £397Free CancellationRating
7.2
1,384 reviews
Search Aer Lingus flights
JetBluePriceFrom £433Free CancellationRating
7.2
2,904 reviews
Search JetBlue flights
IberiaPriceFrom £468Free CancellationRating
7.0
3,038 reviews
Search Iberia flights
American AirlinesPriceFrom £517Free CancellationRating
7.2
11,041 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to United Kingdom?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to United Kingdom from Philadelphia.

Can I find flights from Philadelphia to United Kingdom with flexible booking policies on momondo?

Flights from Philadelphia to United Kingdom with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Philadelphia to United Kingdom?

Once all potential Philadelphia to United Kingdom flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Philadelphia to United Kingdom right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to United Kingdom from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

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