Which airlines fly to London?

British Airways, United Airlines and Lufthansa are the top three most popular airlines that fly to London from Philadelphia according to our data. British Airways is the first choice among our users, with 46% of people opting to fly with this airline when travelling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Philadelphia to London?

JetBlue is the most popular carrier operating from Philadelphia to London

Which stopover airport has the shortest travel time from Philadelphia to London?

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 11h 35m.

How many flights depart from Philadelphia to London on average per day?

As of August 2025, there are 14 flights per day flying from Philadelphia to London. The most common time of day flights depart is 18:00, with 100% of flights taking off in the evening.

Which airport is the most popular for stopovers for flights between Philadelphia and London?

Frankfurt am Main (FRA) was the most common stop: 67% of momondo users choosing one-stop flights on this route connected there.

How many flights depart from Philadelphia to London on average per week?

As of August 2025, 100 flights take off from Philadelphia and land in London each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

Which stopover airport offers the lowest fares from Philadelphia to London?

Flights via Boston (BOS) offer the lowest average return price of £547.

Which stopover airport has the shortest connection time from Philadelphia to London?

Frankfurt am Main (FRA) has the shortest average stopover time for this route: 1h 33m.

When did momondo last update prices for flights from Philadelphia Airport to London?

Prices for flights from Philadelphia Airport to London are updated daily.

How many operators does momondo search for flights from Philadelphia Airport to London?

As of August 2025, there are 5 operators available to choose from for flights from Philadelphia Airport to London.

How old do you have to be to fly from Philadelphia Airport to London?

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 London.

What documentation or ID do you need to fly to London?

The travel and health documents you'll need for your trip to London 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 London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£137 Cheap Flights from Philadelphia to London in 2025

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Find the cheapest flights from Philadelphia to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

21:00 - 06:55PHL-LGW

28h 55m1 stop

14:00 - 23:59LGW-PHL

14h 59m1 stop

£341

Find Deal

Sat, 16 Aug - Thu, 4 Sep

19:45 - 07:50PHL-LHR

7h 05mdirect

06:30 - 13:55LHR-PHL

12h 25m1 stop

£351British Airways

Find Deal

Wed, 7 Jan - Fri, 16 Jan

20:30 - 12:40PHL-LHR

11h 10m1 stop

12:00 - 19:00LHR-PHL

12h 00m1 stop

£354Aer Lingus

Find Deal

Wed, 10 Sep - Wed, 17 Sep

17:30 - 09:05PHL-LHR

10h 35m1 stop

09:50 - 16:00LHR-PHL

11h 10m1 stop

£355Aer Lingus

Find Deal

Mon, 8 Dec - Fri, 12 Dec

18:15 - 11:10PHL-LHR

11h 55m1 stop

09:20 - 19:54LHR-PHL

15h 34m1 stop

£364KLM

Find Deal

Mon, 11 Aug - Wed, 20 Aug

20:45 - 07:50PHL-LHR

7h 05mdirect

07:50 - 13:55LHR-PHL

11h 05m1 stop

£365American Airlines

Find Deal

Wed, 29 Oct - Fri, 7 Nov

19:50 - 08:05PHL-LHR

7h 15mdirect

08:55 - 16:45LHR-PHL

12h 50m1 stop

£371American Airlines

Find Deal

Tue, 12 Aug - Thu, 28 Aug

19:45 - 07:50PHL-LHR

7h 05mdirect

11:25 - 15:35LHR-PHL

33h 10m1 stop

£381Iberia

Find Deal

Tue, 2 Dec - Mon, 8 Dec

13:57 - 10:50PHL-LGW

16h 53m2 stops

11:20 - 14:20LGW-PHL

32h 00m1 stop

£383Iberia

Find Deal

Sun, 26 Oct - Tue, 25 Nov

12:18 - 07:15PHL-LCY

13h 57m2 stops

10:00 - 22:20LCY-PHL

17h 20m2 stops

£475KLM

Find Deal

Thu, 14 Aug - Tue, 26 Aug

Air Canada flights from Philadelphia to London

Our best Air Canada deals on Philadelphia to London flight tickets

Air Canada

15 Oct

PHL15:25Philadelphia

10h 05m

1 stop

LHR06:30London Heathrow

21 Oct

LHR14:05London Heathrow

12h 33m

1 stop

PHL21:38Philadelphia

£369

Find similar

Air Canada

10 Sept

PHL15:25Philadelphia

13h 10m

1 stop

LHR09:35London Heathrow

25 Sept

LHR06:50London Heathrow

12h 48m

2 stops

PHL14:38Philadelphia

£382

Find similar

Air Canada

13 Aug

PHL15:20Philadelphia

13h 40m

1 stop

LHR10:00London Heathrow

21 Aug

LHR12:40London Heathrow

30h 57m

2 stops

PHL14:37Philadelphia

£389

Find similar

British Airways flights from Philadelphia to London

Our best British Airways deals on Philadelphia to London flight tickets

British Airways

7 Jan

PHL19:45Philadelphia

7h 05m

LHR07:50London Heathrow

16 Jan

LHR06:30London Heathrow

12h 25m

1 stop

PHL13:55Philadelphia

£351

Find similar

British Airways

7 Jan

PHL19:45Philadelphia

7h 05m

LHR07:50London Heathrow

16 Jan

LHR06:30London Heathrow

12h 25m

1 stop

PHL13:55Philadelphia

£351

Find similar

British Airways

21 Oct

PHL20:00Philadelphia

7h 05m

LHR08:05London Heathrow

31 Oct

LHR06:30London Heathrow

12h 15m

1 stop

PHL14:45Philadelphia

£353

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Sat 16/8

21:00-06:55

1 stop28h 55m

London Gatwick

Thu 4/9

14:00-23:59

1 stop14h 59m

£341

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 7/1

19:45-07:50

Nonstop7h 05m

London Heathrow

Fri 16/1

06:30-13:55

1 stop12h 25m

£351

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 10/9

20:30-12:40

1 stop11h 10m

London Heathrow

Wed 17/9

12:00-19:00

1 stop12h 00m

£354

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 8/12

17:30-09:05

1 stop10h 35m

London Heathrow

Fri 12/12

09:50-16:00

1 stop11h 10m

£355

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 11/8

18:15-11:10

1 stop11h 55m

London Heathrow

Wed 20/8

09:20-19:54

1 stop15h 34m

£364

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 29/10

20:45-07:50

Nonstop7h 05m

London Heathrow

Fri 7/11

07:50-13:55

1 stop11h 05m

£365

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 12/8

19:50-08:05

Nonstop7h 15m

London Heathrow

Thu 28/8

08:55-16:45

1 stop12h 50m

£371

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 2/12

19:45-07:50

Nonstop7h 05m

London Heathrow

Mon 8/12

11:25-15:35

1 stop33h 10m

£381

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Sun 26/10

13:57-10:50

2 stops16h 53m

London Gatwick

Tue 25/11

11:20-14:20

1 stop32h 00m

£383

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Thu 14/8

12:18-07:15

2 stops13h 57m

London City

Tue 26/8

10:00-22:20

2 stops17h 20m

£475

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to London

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

Prices

Airlines

Stopovers

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Philadelphia is in February. Flight prices, which tend to average around £501, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Philadelphia averaging around £516.

What is the cheapest day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £508. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to London for around £758.

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

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £503. Flights at midday are often more expensive, with an average ticket price of £747.

What is the cheapest Philadelphia to London flight route?

Fly from Philadelphia to London Heathrow for the best Philadelphia - London flight prices

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £627 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Philadelphia for as low as £552 on momondo.

What cabin class options are available on Philadelphia to London flights?

There are 3 cabin classes available to choose from on Philadelphia to London 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 London flights?

You could potentially save up to 18% on your flight if you consider stops on a Philadelphia to London flight.

How have Philadelphia to London flight prices changed over time?

As of August 2025, prices for Philadelphia to London flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to London

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Philadelphia to London (PHL to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to London

Best price found	£137
Fastest flight time	7h 00m
Direct flights	Every day
Airports in London	6 airports

The best one-way flight to London from Philadelphia in the past 72 hours is £137. The best return flight deal from Philadelphia to London found on momondo in the last 72 hours is £341.

The fastest flight from Philadelphia to London takes 7h 00m

Direct flights go from Philadelphia to London every day.

There are 6 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

Search flight deals

How far is Philadelphia to London by plane?
The distance between Philadelphia and London is about 3538.9 mi. A reasonable flight in good conditions will take 7h 00m.
When did momondo last update prices for flights from Philadelphia Airport to London?
Prices for flights from Philadelphia Airport to London are updated daily.
How many operators does momondo search for flights from Philadelphia Airport to London?
As of August 2025, there are 5 operators available to choose from for flights from Philadelphia Airport to London.
How old do you have to be to fly from Philadelphia Airport to London?
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 London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London 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 London. 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 London?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Philadelphia to London is Boeing 787-9 Dreamliner (47.92% of total bookings). The next most popular plane models are Airbus A350-1000 (44.81%), Boeing 787-8 Dreamliner (2.49%), and Boeing 787 Dreamliner (2.23%).
What is the most popular airline from Philadelphia to London?
Based on momondo bookings for flights between Philadelphia and London, the leading airline is British Airways, making up 40% of the total bookings. Other popular airlines include Iberia with 26%, Aer Lingus with 15%, and JetBlue with 11%.

Best airlines flying from Philadelphia to London

Compare and see reviews for airlines that fly from Philadelphia to London with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom £433	Free Cancellation	Rating 7.2 2,914 reviews	Search JetBlue flights
Iberia	PriceFrom £440	Free Cancellation	Rating 7.0 2,859 reviews	Search Iberia flights
British Airways	PriceFrom £451	Free Cancellation	Rating 6.6 7,222 reviews	Search British Airways flights
Aer Lingus	PriceFrom £500	Free Cancellation	Rating 7.1 1,192 reviews	Search Aer Lingus flights
American Airlines	PriceFrom £516	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

American Airlines Flights From Philadelphia to London
The lowest priced American Airlines flight from Philadelphia to London from the last 72 hours was £683. Generally, American Airlines has 20 flights on this route every week with an average price of £871. American Airlines is rated 7.2/10 by our users.
Aer Lingus Flights From Philadelphia to London
£662 is the best Aer Lingus flight deal from Philadelphia to London found on momondo over the last 72 hours. The average Aer Lingus ticket price found was closer to £1,041, however, with flight time and availability significantly affecting the price. Aer Lingus (7.1/10 from 1,192 user reviews) flies into London from Philadelphia 7 times in an average week so prices can vary.

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to London. momondo saves you time and could save you money on your trip.

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

Yes. All flights to London 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 London?

Once all potential Philadelphia to London 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 London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Philadelphia to London 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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Cheap flights from Philadelphia to London from £137

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 London departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Philadelphia to London

Cheap return flights

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Cheap last-minute flights

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Air Canada flights from Philadelphia to London

Our best Air Canada deals on Philadelphia to London flight tickets

British Airways flights from Philadelphia to London

Our best British Airways deals on Philadelphia to London flight tickets

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Use the filters below to find and compare flights from Philadelphia to London that are best for you.

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How to get the cheapest flight ticket from Philadelphia to London

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 London?

What is the cheapest day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £508. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to London for around £758.

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

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £503. Flights at midday are often more expensive, with an average ticket price of £747.

What is the cheapest Philadelphia to London flight route?

Fly from Philadelphia to London Heathrow for the best Philadelphia - London flight prices

How far in advance should I book a flight to London?

What cabin class options are available on Philadelphia to London flights?

There are 3 cabin classes available to choose from on Philadelphia to London 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 London flights?

You could potentially save up to 18% on your flight if you consider stops on a Philadelphia to London flight.

How have Philadelphia to London flight prices changed over time?

As of August 2025, prices for Philadelphia to London flights are approximately 1% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Philadelphia to London?

JetBlue is the most popular carrier operating from Philadelphia to London

Which airlines fly to London?

Which airport is the most popular for stopovers for flights between Philadelphia and London?

Frankfurt am Main (FRA) was the most common stop: 67% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from Philadelphia to London?

Flights via Boston (BOS) offer the lowest average return price of £547.

Which stopover airport has the shortest travel time from Philadelphia to London?

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 11h 35m.

Which stopover airport has the shortest connection time from Philadelphia to London?

Frankfurt am Main (FRA) has the shortest average stopover time for this route: 1h 33m.

How many flights depart from Philadelphia to London on average per day?

As of August 2025, there are 14 flights per day flying from Philadelphia to London. The most common time of day flights depart is 18:00, with 100% of flights taking off in the evening.

How many flights depart from Philadelphia to London on average per week?

As of August 2025, 100 flights take off from Philadelphia and land in London each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

When to book flights from Philadelphia to London

Cheap Philadelphia to London (PHL to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to London

Best price found

Fastest flight time

Direct flights

Airports in London

How far is Philadelphia to London by plane?

When did momondo last update prices for flights from Philadelphia Airport to London?

How many operators does momondo search for flights from Philadelphia Airport to London?

How old do you have to be to fly from Philadelphia Airport to London?

What documentation or ID do you need to fly to London?

What is the most popular plane model from Philadelphia to London?

What is the most popular airline from Philadelphia to London?

Best airlines flying from Philadelphia to London

Compare and see reviews for airlines that fly from Philadelphia to London with momondo

American Airlines Flights From Philadelphia to London

Aer Lingus Flights From Philadelphia to London

Travelling to a place near London?

Why use momondo?

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

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

How can momondo help me find flights from Philadelphia to London?

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

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down