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

JetBlue is the most popular carrier operating from Philadelphia to London Heathrow

What airlines fly to London Heathrow Airport?

British Airways, United Airlines and Iberia are the top three most popular airlines that fly to London Heathrow Airport from Philadelphia according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 20 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

As of July 2025, there are 105 flights per week flying from Philadelphia to London Heathrow Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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

As of July 2025, 15 flights take off from Philadelphia and land in London Heathrow Airport each day. The most common flight departure time for this route is 10:00PM, with 100% of daily flights taking off in the evening.

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

Prices for flights from Philadelphia Airport to London Heathrow Airport refresh daily.

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

The number of operators available for flights from Philadelphia Airport to London Heathrow Airport is 7 as of July 2025.

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

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 Heathrow Airport.

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

The required travel and health documents for your London Heathrow Airport 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 Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$233 Cheap Flights from Philadelphia to London Heathrow Airport in 2025

Q: What is the typical price of a round-trip flight between Philadelphia and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from $867 to $1,204. The lowest price recently found on this route was $444.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Philadelphia to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:33 pm - 1:30 pmPHL-LHR

12h 57m1 stop

6:15 am - 7:10 pmLHR-PHL

17h 55m2 stops

$444Virgin Atlantic

Find Deal

Sun, Aug 3 - Tue, Aug 12

6:27 pm - 1:30 pmPHL-LHR

14h 03m1 stop

3:15 pm - 12:56 amLHR-PHL

14h 41m1 stop

$447Virgin Atlantic

Find Deal

Sun, Aug 3 - Tue, Aug 12

5:30 pm - 9:05 amPHL-LHR

10h 35m1 stop

9:50 am - 4:00 pmLHR-PHL

11h 10m1 stop

$472Aer Lingus

Find Deal

Tue, Nov 18 - Tue, Nov 25

6:30 pm - 10:10 amPHL-LHR

11h 40m1 stop

8:50 am - 4:00 pmLHR-PHL

12h 10m1 stop

$477Aer Lingus

Find Deal

Wed, Oct 29 - Fri, Nov 7

6:30 pm - 6:40 amPHL-LHR

7h 10mnonstop

6:30 am - 1:55 pmLHR-PHL

12h 25m1 stop

$478British Airways

Find Deal

Tue, Oct 7 - Wed, Nov 12

3:35 pm - 5:55 amPHL-LHR

9h 20m1 stop

6:30 am - 1:55 pmLHR-PHL

12h 25m1 stop

$480British Airways

Find Deal

Wed, Nov 26 - Wed, Dec 3

7:40 pm - 6:35 amPHL-LHR

6h 55mnonstop

7:50 am - 1:55 pmLHR-PHL

11h 05m1 stop

$486American Airlines

Find Deal

Wed, Oct 29 - Fri, Nov 7

7:50 pm - 8:05 amPHL-LHR

7h 15mnonstop

8:45 am - 4:45 pmLHR-PHL

13h 00m1 stop

$494American Airlines

Find Deal

Sun, Aug 17 - Wed, Aug 27

10:25 pm - 10:30 amPHL-LHR

7h 05mnonstop

12:30 pm - 3:35 pmLHR-PHL

8h 05mnonstop

$515Iberia

Find Deal

Sun, Aug 3 - Tue, Aug 12

1:50 pm - 7:50 amPHL-LHR

13h 00m1 stop

10:05 am - 1:10 pmLHR-PHL

8h 05mnonstop

$523Iberia

Find Deal

Sun, Aug 3 - Thu, Aug 14

British Airways flights from Philadelphia to London Heathrow Airport

Our best British Airways deals on Philadelphia to London Heathrow Airport flight tickets

British Airways

Oct 7

PHL6:30 pmPhiladelphia

7h 10m

LHR6:40 amLondon Heathrow

Nov 12

LHR6:30 amLondon Heathrow

12h 25m

1 stop

PHL1:55 pmPhiladelphia

$478

Find similar

British Airways

Nov 26

PHL3:35 pmPhiladelphia

9h 20m

1 stop

LHR5:55 amLondon Heathrow

Dec 3

LHR6:30 amLondon Heathrow

12h 25m

1 stop

PHL1:55 pmPhiladelphia

$480

Find similar

British Airways

Aug 3

PHL6:35 pmPhiladelphia

7h 05m

LHR6:40 amLondon Heathrow

Aug 12

LHR1:30 pmLondon Heathrow

7h 55m

PHL4:25 pmPhiladelphia

$483

Find similar

Iberia flights from Philadelphia to London Heathrow Airport

Our best Iberia deals on Philadelphia to London Heathrow Airport flight tickets

Iberia

Aug 3

PHL10:25 pmPhiladelphia

7h 05m

LHR10:30 amLondon Heathrow

Aug 12

LHR12:30 pmLondon Heathrow

8h 05m

PHL3:35 pmPhiladelphia

$515

Find similar

Iberia

Aug 3

PHL1:50 pmPhiladelphia

13h 00m

1 stop

LHR7:50 amLondon Heathrow

Aug 14

LHR10:05 amLondon Heathrow

8h 05m

PHL1:10 pmPhiladelphia

$523

Find similar

Iberia

Jul 15

PHL10:25 pmPhiladelphia

7h 05m

LHR10:30 amLondon Heathrow

Sep 7

LHR10:05 amLondon Heathrow

8h 00m

PHL1:05 pmPhiladelphia

$652

Find similar

How to get the cheapest flight ticket from Philadelphia to London Heathrow Airport

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

Other information

What is the typical price of a round-trip flight between Philadelphia and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Philadelphia, with most prices found around $717. If you’re not able to fly to London Heathrow Airport in October, then January is your next best option. Flight prices from Philadelphia to London Heathrow Airport during January average around $721.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $797. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $984.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from Philadelphia to London Heathrow Airport at noon for as low as $802. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $885.

What is the cheapest Philadelphia to London Heathrow flight route?

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

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

You are more likely to see cheaper flights to London Heathrow Airport from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $841 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Philadelphia for as low as $714 on momondo.

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

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

You could potentially save up to 4% on your flight if you consider stops on a Philadelphia to London Heathrow Airport flight.

How have Philadelphia to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Philadelphia to London Heathrow Airport flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to London Heathrow Airport

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

Estimated round-trip price

Cheap Philadelphia to London Heathrow Airport (PHL to LHR) flight deals and tips

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

Best Price Found	$233
Fastest flight time	6h 55m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from Philadelphia in the past 72 hours is $233. The best round-trip flight deal from Philadelphia to London Heathrow Airport found on momondo in the last 72 hours is $444.

The fastest flight from Philadelphia to London Heathrow Airport takes 6h 55m

Direct flights go from Philadelphia to London Heathrow Airport every day.

Search flight deals

How far is Philadelphia to London Heathrow by plane?
Philadelphia and London Heathrow are 3526.0 mi apart from one another. Flights usually cover this in 6h 55m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Philadelphia Airport to London Heathrow Airport?
Prices for flights from Philadelphia Airport to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to London Heathrow Airport?
The number of operators available for flights from Philadelphia Airport to London Heathrow Airport is 7 as of July 2025.
How old do you have to be to fly from Philadelphia Airport to London Heathrow Airport?
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 Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Philadelphia to London Heathrow Airport is Boeing 787-9 Dreamliner (47.36% of total bookings). The next most popular plane models are Airbus A350-1000 (43.13%), Boeing 787-8 Dreamliner (3.70%), and Boeing 787 Dreamliner (3.08%).
What is the most popular airline from Philadelphia to London Heathrow Airport?
Based on momondo bookings for flights between Philadelphia and London Heathrow Airport, the leading airline is British Airways, making up 41% of the total bookings. Other popular airlines include Iberia with 25%, American Airlines with 18%, and Aer Lingus with 6%.

Best airlines flying from Philadelphia to London Heathrow Airport

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

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $547	Free Cancellation	Rating 7.3 2,910 reviews	Search JetBlue flights
Aer Lingus	PriceFrom $580	Free Cancellation	Rating 7.1 1,152 reviews	Search Aer Lingus flights
Iberia	PriceFrom $610	Free Cancellation	Rating 7.0 2,826 reviews	Search Iberia flights
British Airways	PriceFrom $613	Free Cancellation	Rating 6.6 7,109 reviews	Search British Airways flights
American Airlines	PriceFrom $630	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Finnair	PriceFrom $635	Free Cancellation	Rating 7.6 1,312 reviews	Search Finnair flights
United Airlines	PriceFrom $673	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights

Finnair Flights From Philadelphia to London Heathrow Airport
Finnair flies from Philadelphia to London Heathrow Airport around 21 times per week, with 1,312 momondo users rating the airline 7.6/10. The cheapest Finnair deal from Philadelphia to London Heathrow Airport in the last 72 hours was $635 (round-trip), much lower than the average airfare cost of $791 for Finnair flights on this route.
American Airlines Flights From Philadelphia to London Heathrow Airport
The best American Airlines deal for Philadelphia to London Heathrow Airport flight tickets found on momondo in the last 72 hours was $630, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $872 round-trip. American Airlines operates 21 flights out of Philadelphia into London Heathrow Airport in an average week, so prices vary by time and availability. 10,000 American Airlines reviews by users on momondo have scored the airline at 7.2/10.

Hounslow

Gatwick

Croydon

Luton

Slough

Dover

Dartford

Guildford

Stansted

Hayes

Milton Keynes

Salisbury

Swindon

Ilford

Colchester

Stratford-upon-Avon

Chelmsford

Canterbury

Watford

Richmond

Why use momondo?

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

It is quick and easy to find Philadelphia to London 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 London that suits you.

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

Flights from Philadelphia to London 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 London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Philadelphia.

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

If you are not ready to book a flight from Philadelphia to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport 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

Tue 7/15

Tue 7/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $319

Flights to London City Airportfrom $457

Flights to London Stansted Airportfrom $362

Flights to London Luton Airportfrom $387

Flights to London Southend Airportfrom $477

Flights to Glasgow Intl Airportfrom $410

Flights to Belfast Intl Airportfrom $475

Flights to Belfast City Airportfrom $475

Cheap flights from Philadelphia to London from $233

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 7/21. 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 and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

British Airways flights from Philadelphia to London Heathrow Airport

Our best British Airways deals on Philadelphia to London Heathrow Airport flight tickets

Iberia flights from Philadelphia to London Heathrow Airport

Our best Iberia deals on Philadelphia to London Heathrow Airport flight tickets

See travel insights to London from

How to get the cheapest flight ticket from Philadelphia to London Heathrow Airport

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 typical price of a round-trip flight between Philadelphia and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $797. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $984.

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

What is the cheapest Philadelphia to London Heathrow flight route?

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

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

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

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

You could potentially save up to 4% on your flight if you consider stops on a Philadelphia to London Heathrow Airport flight.

How have Philadelphia to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Philadelphia to London Heathrow Airport flights are approximately 5% more expensive when compared to flights at the same time last year.

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

JetBlue is the most popular carrier operating from Philadelphia to London Heathrow

What airlines fly to London Heathrow Airport?

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

As of July 2025, 15 flights take off from Philadelphia and land in London Heathrow Airport each day. The most common flight departure time for this route is 10:00PM, with 100% of daily flights taking off in the evening.

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

As of July 2025, there are 105 flights per week flying from Philadelphia to London Heathrow Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

When to book flights from Philadelphia to London Heathrow Airport

Cheap Philadelphia to London Heathrow Airport (PHL to LHR) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

How far is Philadelphia to London Heathrow by plane?

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

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

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

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

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

What is the most popular airline from Philadelphia to London Heathrow Airport?

Best airlines flying from Philadelphia to London Heathrow Airport

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

Finnair Flights From Philadelphia to London Heathrow Airport

American Airlines Flights From Philadelphia to London Heathrow Airport

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 Heathrow Airport 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 London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo