What airlines fly to London?

British Airways, United Airlines and Iberia 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 51% of people opting to fly with this airline when traveling to London. Keep in mind that there are 22 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 18m.

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

Boston (BOS) was the most common stop: 70% of momondo users choosing 1-stop flights on this route connected there.

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

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 35m.

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

As of January 2026, 70 flights take off from Philadelphia and land in London each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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

As of January 2026, 10 flights take off from Philadelphia and land in London each day. The most common flight departure time for this route is 6:00PM, with 100% of daily flights taking off in the evening.

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

Flights via Boston (BOS) offer the lowest average round-trip price of $1.

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

TAP AIR PORTUGAL and JetBlue are the most popular carriers operating from Philadelphia to London

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

Prices for flights from Philadelphia Airport to London refresh daily.

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

The number of operators available for flights from Philadelphia Airport to London is 8 as of January 2026.

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 required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$183 Cheap Flights from Philadelphia to London in 2026

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Cheap round-trip flights

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3:30 pm - 9:20 am

PHL

LHR

12h 50m2 stops

1:25 pm - 2:47 pm

LHR

PHL

29h 22m1 stop

$602Air Canada

Wed, Mar 4 - Fri, Mar 20

8:40 pm - 7:50 am

PHL

LHR

7h 10mnonstop

4:00 pm - 11:57 am

LHR

PHL

23h 57m1 stop

$604British Airways

Mon, Mar 16 - Fri, Mar 27

7:20 pm - 2:15 pm

PHL

LGW

13h 55m1 stop

9:05 pm - 3:05 pm

LGW

PHL

22h 00m1 stop

$604British Airways

Wed, Mar 4 - Wed, Mar 18

9:25 pm - 12:40 pm

PHL

LCY

10h 15m1 stop

6:50 am - 1:55 pm

LCY

PHL

12h 05m1 stop

$604Multiple Airlines

Tue, Feb 10 - Tue, Feb 17

4:44 pm - 5:15 pm

PHL

LHR

19h 31m2 stops

7:40 pm - 7:27 pm

LHR

PHL

28h 47m2 stops

$605Iberia

Wed, Jan 21 - Mon, Jan 26

7:45 pm - 2:05 pm

PHL

LCY

13h 20m1 stop

7:50 am - 3:25 pm

LCY

PHL

12h 35m1 stop

$605Iberia

Tue, Feb 17 - Wed, Feb 25

3:54 pm - 10:05 am

PHL

LGW

13h 11m1 stop

1:00 pm - 11:11 am

LGW

PHL

27h 11m2 stops

$605Multiple Airlines

Sat, Jan 24 - Tue, Feb 17

12:29 pm - 10:15 am

PHL

LHR

16h 46m2 stops

8:55 am - 9:16 pm

LHR

PHL

17h 21m2 stops

$607Virgin Atlantic

Wed, Feb 4 - Wed, Feb 11

1:10 pm - 5:50 pm

PHL

LGW

23h 40m2 stops

6:40 pm - 9:09 pm

LGW

PHL

31h 29m2 stops

$608SWISS

Tue, Feb 10 - Tue, Feb 17

1:10 pm - 5:50 pm

PHL

LHR

23h 40m2 stops

1:45 pm - 9:36 pm

LHR

PHL

36h 51m2 stops

$612SWISS

Mon, Jan 26 - Mon, Feb 2

British Airways flights from Philadelphia to London

Our best British Airways deals on Philadelphia to London flight tickets

British Airways

Mar 16

PHL8:40 pmPhiladelphia

7h 10m

LHR7:50 amLondon Heathrow

Mar 27

LHR4:00 pmLondon Heathrow

23h 57m

1 stop

PHL11:57 amPhiladelphia

$604

Find similar

British Airways

Mar 22

PHL7:35 pmPhiladelphia

7h 00m

LHR6:35 amLondon Heathrow

Apr 2

LHR12:30 pmLondon Heathrow

8h 00m

PHL3:30 pmPhiladelphia

$610

Find similar

British Airways

Apr 15

PHL10:20 pmPhiladelphia

7h 00m

LHR10:20 amLondon Heathrow

Apr 25

LHR12:00 pmLondon Heathrow

11h 55m

1 stop

PHL6:55 pmPhiladelphia

$611

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JetBlue flights from Philadelphia to London

Our best JetBlue deals on Philadelphia to London flight tickets

JetBlue

Jan 29

PHL1:30 pmPhiladelphia

12h 25m

1 stop

LHR6:55 amLondon Heathrow

Feb 3

LHR9:20 amLondon Heathrow

14h 03m

1 stop

PHL6:23 pmPhiladelphia

$641

Find similar

JetBlue

Jan 17

PHL8:40 amPhiladelphia

17h 15m

1 stop

LHR6:55 amLondon Heathrow

Jan 20

LHR9:20 amLondon Heathrow

14h 03m

1 stop

PHL6:23 pmPhiladelphia

$656

Find similar

JetBlue

Jan 10

PHL8:10 amPhiladelphia

17h 45m

1 stop

LHR6:55 amLondon Heathrow

Jan 17

LHR9:20 amLondon Heathrow

14h 18m

1 stop

PHL6:38 pmPhiladelphia

$657

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Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 3/4

3:30 pm-9:20 am

2 stops12h 50m

London Heathrow

Fri 3/20

1:25 pm-2:47 pm

1 stop29h 22m

$602

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 3/16

8:40 pm-7:50 am

Nonstop7h 10m

London Heathrow

Fri 3/27

4:00 pm-11:57 am

1 stop23h 57m

$604

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Wed 3/4

7:20 pm-2:15 pm

1 stop13h 55m

London Gatwick

Wed 3/18

9:05 pm-3:05 pm

1 stop22h 00m

$604

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Tue 2/10

9:25 pm-12:40 pm

1 stop10h 15m

London City

Tue 2/17

6:50 am-1:55 pm

1 stop12h 05m

$604

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 1/21

4:44 pm-5:15 pm

2 stops19h 31m

London Heathrow

Mon 1/26

7:40 pm-7:27 pm

2 stops28h 47m

$605

PhiladelphiaLondon

PHL - LCY

PHLLCY

Philadelphia

Tue 2/17

7:45 pm-2:05 pm

1 stop13h 20m

London City

Wed 2/25

7:50 am-3:25 pm

1 stop12h 35m

$605

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Sat 1/24

3:54 pm-10:05 am

1 stop13h 11m

London Gatwick

Tue 2/17

1:00 pm-11:11 am

2 stops27h 11m

$605

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 2/4

12:29 pm-10:15 am

2 stops16h 46m

London Heathrow

Wed 2/11

8:55 am-9:16 pm

2 stops17h 21m

$607

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Tue 2/10

1:10 pm-5:50 pm

2 stops23h 40m

London Gatwick

Tue 2/17

6:40 pm-9:09 pm

2 stops31h 29m

$608

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 1/26

1:10 pm-5:50 pm

2 stops23h 40m

London Heathrow

Mon 2/2

1:45 pm-9:36 pm

2 stops36h 51m

$612

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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

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Philadelphia is in September. Flight prices, which tend to average around $647, are often lower during this time because this is during the off-season. The month of August is another great option to travel to London, with average flight prices from Philadelphia averaging around $662.

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

The cheapest day to depart from Philadelphia to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $770. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $980. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Philadelphia in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $858 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $874. 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 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 $828 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Philadelphia for as low as $684 on momondo.

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

There are 4 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 7% 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 January 2026, prices for Philadelphia to London flights are approximately 95% 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 round-trip 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	$411
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 $411. The best round-trip flight deal from Philadelphia to London found on momondo in the last 72 hours is $688.

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

Direct flights go from Philadelphia to London every day.

There are 6 airports in London. From Philadelphia there are direct flights to London Heathrow (LHR).

Search flight deals

How far is Philadelphia to London by plane?
A flight from Philadelphia to London will travel around 3538.9 mi. Typically, this will take 7h 00m by plane in normal conditions.
When did momondo last update prices for flights from Philadelphia Airport to London?
Prices for flights from Philadelphia Airport to London refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to London?
The number of operators available for flights from Philadelphia Airport to London is 8 as of January 2026.
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 required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Philadelphia to London?
Based on momondo bookings for flights between Philadelphia and London, the leading plane model is Airbus A350-1000, making up 45.20% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 43.30%, Boeing 787-8 Dreamliner with 3.80%, and Boeing 787 Dreamliner with 3.17%.
What is the most popular airline from Philadelphia to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Philadelphia to London is British Airways (45% of total bookings). The next most popular airlines are Iberia (18%), American Airlines (16%), and Finnair (7%).

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
British Airways	PriceFrom $508	Free Cancellation	Rating 6.7 7,657 reviews	Search British Airways flights
American Airlines	PriceFrom $508	Free Cancellation	Rating 7.2 11,094 reviews	Search American Airlines flights
Finnair	PriceFrom $515	Free Cancellation	Rating 7.6 1,346 reviews	Search Finnair flights
Aer Lingus	PriceFrom $522	Free Cancellation	Rating 7.2 1,425 reviews	Search Aer Lingus flights
Air Canada	PriceFrom $556	Free Cancellation	Rating 7.1 10,602 reviews	Search Air Canada flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,138 reviews	Search United Airlines flights
JetBlue	PriceFrom $580	Free Cancellation	Rating 7.2 2,896 reviews	Search JetBlue flights
Iberia	PriceFrom $595	Free Cancellation	Rating 7.0 3,076 reviews	Search Iberia flights

Finnair Flights From Philadelphia to London
Finnair operates around 14 flights from Philadelphia to London every week. The average price of these flights found in the last 72 hours has been $777, but momondo users have found Finnair deals from Philadelphia to London from as low as $515 round-trip. Finnair has been scored 7.6/10 in 1,346 reviews.
American Airlines Flights From Philadelphia to London
$508 is the best American Airlines flight deal from Philadelphia to London found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to $834, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 11,094 user reviews) flies into London from Philadelphia 14 times in an average week so prices can vary.

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Romford

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Uxbridge

Chelmsford

Stansted

Why use momondo?

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

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 London from Philadelphia.

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

Yes. momondo allows you to filter the results for Philadelphia to London flights to just show those with flexible booking policies.

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

Once you have performed a search for Philadelphia to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to London from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London 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.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

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London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Popular cities in the United Kingdom

Flights to Manchesterfrom $389

Flights to Edinburghfrom $368

Flights to Birminghamfrom $374

Flights to Glasgowfrom $392

Flights to Newcastle upon Tynefrom $463

Flights to Belfastfrom $482

Flights to Bristolfrom $416

Flights to Invernessfrom $387

Flights to Liverpoolfrom $438

Flights to Aberdeenfrom $491

Flights to Leedsfrom $429

Flights to Cardifffrom $525

Cheap flights from Philadelphia to London from $183

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 3/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Philadelphia to London

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British Airways flights from Philadelphia to London

Our best British Airways deals on Philadelphia to London flight tickets

JetBlue flights from Philadelphia to London

Our best JetBlue 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.

See travel insights to London from

How to get the cheapest flight ticket from Philadelphia to London

What is the cheapest month to fly to London?

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

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

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 4 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 7% 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 January 2026, prices for Philadelphia to London flights are approximately 95% more expensive when compared to flights at the same time last year.

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

TAP AIR PORTUGAL and JetBlue are the most popular carriers operating from Philadelphia to London

What airlines fly to London?

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

Boston (BOS) was the most common stop: 70% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Boston (BOS) offer the lowest average round-trip price of $1.

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

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 35m.

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

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 18m.

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

As of January 2026, 10 flights take off from Philadelphia and land in London each day. The most common flight departure time for this route is 6:00PM, with 100% of daily flights taking off in the evening.

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

As of January 2026, 70 flights take off from Philadelphia and land in London each week. The most common flight departure day for this route is Mon, with 14% 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

Finnair Flights From Philadelphia to London

American Airlines Flights From Philadelphia to London

Traveling 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, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London