Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Heathrow Airport to Philadelphia from $390

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Philadelphia departing on 10/5. 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

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.

Find the cheapest flights from London Heathrow Airport to Philadelphia

Cheap round-trip flights

Icelandair Logo
8:25 am - 5:45 pmLHR-PHL
14h 20m1 stop
Icelandair Logo
6:40 pm - 6:30 amPHL-LHR
30h 50m1 stop
$472Icelandair
Find Deal
Thu, Sep 11 - Sat, Sep 13
JetBlue Logo
8:25 am - 4:55 pmLHR-PHL
13h 30m1 stop
JetBlue Logo
10:20 am - 6:30 amPHL-LHR
15h 10m1 stop
$489JetBlue
Find Deal
Tue, Aug 19 - Tue, Sep 23
JetBlue Logo
8:25 am - 9:24 pmLHR-PHL
17h 59m1 stop
JetBlue Logo
10:20 am - 6:30 amPHL-LHR
15h 10m1 stop
$527JetBlue
Find Deal
Tue, Sep 16 - Tue, Sep 23
Air Canada Logo
9:30 am - 2:38 pmLHR-PHL
10h 08m1 stop
Air Canada Logo
3:25 pm - 6:30 amPHL-LHR
10h 05m1 stop
$532Air Canada
Find Deal
Tue, Sep 9 - Tue, Sep 23
Air Canada Logo
9:30 am - 10:07 pmLHR-PHL
17h 37m1 stop
Air Canada Logo
3:25 pm - 6:30 amPHL-LHR
10h 05m1 stop
$533Air Canada
Find Deal
Mon, Sep 1 - Tue, Sep 9
 Logo
6:40 am - 11:06 amLHR-PHL
33h 26m2 stops
 Logo
7:15 am - 5:40 pmPHL-LHR
29h 25m2 stops
Wed, Sep 3 - Sun, Sep 7
Finnair Logo
7:55 am - 2:05 pmLHR-PHL
11h 10m1 stop
Finnair Logo
3:55 pm - 12:15 pmPHL-LHR
15h 20m2 stops
$627Finnair
Find Deal
Wed, Aug 6 - Tue, Aug 19
British Airways Logo
7:50 am - 1:55 pmLHR-PHL
11h 05m1 stop
British Airways Logo
3:35 pm - 9:15 amPHL-LHR
12h 40m1 stop
$629British Airways
Find Deal
Mon, Nov 3 - Wed, Nov 12
British Airways Logo
7:50 am - 1:55 pmLHR-PHL
11h 05m1 stop
British Airways Logo
3:35 pm - 7:00 amPHL-LHR
10h 25m1 stop
$632British Airways
Find Deal
Mon, Nov 17 - Mon, Dec 1
Finnair Logo
7:55 am - 2:05 pmLHR-PHL
11h 10m1 stop
Finnair Logo
7:50 pm - 8:05 amPHL-LHR
7h 15mnonstop
$633Finnair
Find Deal
Wed, Aug 6 - Tue, Aug 19

British Airways flights from London Heathrow Airport to Philadelphia

Our best British Airways deals on London Heathrow Airport to Philadelphia flight tickets
British Airways
Nov 3
LHR7:50 amLondon Heathrow
11h 05m
1 stop
PHL1:55 pmPhiladelphia
Nov 12
PHL3:35 pmPhiladelphia
12h 40m
1 stop
LHR9:15 amLondon Heathrow
British Airways
Nov 17
LHR7:50 amLondon Heathrow
11h 05m
1 stop
PHL1:55 pmPhiladelphia
Dec 1
PHL3:35 pmPhiladelphia
10h 25m
1 stop
LHR7:00 amLondon Heathrow
British Airways
Jul 15
LHR12:30 pmLondon Heathrow
7h 55m
PHL3:25 pmPhiladelphia
Aug 5
PHL4:02 pmPhiladelphia
10h 48m
1 stop
LHR7:50 amLondon Heathrow

Icelandair flights from London Heathrow Airport to Philadelphia

Our best Icelandair deals on London Heathrow Airport to Philadelphia flight tickets
Icelandair
Sep 11
LHR8:25 amLondon Heathrow
14h 20m
1 stop
PHL5:45 pmPhiladelphia
Sep 13
PHL6:40 pmPhiladelphia
30h 50m
1 stop
LHR6:30 amLondon Heathrow
Icelandair
Sep 11
LHR8:25 amLondon Heathrow
29h 57m
1 stop
PHL9:22 amPhiladelphia
Sep 13
PHL6:40 pmPhiladelphia
45h 05m
2 stops
LHR8:45 pmLondon Heathrow
Icelandair
Sep 25
LHR8:25 amLondon Heathrow
29h 57m
1 stop
PHL9:22 amPhiladelphia
Sep 28
PHL7:00 amPhiladelphia
18h 30m
1 stop
LHR6:30 amLondon Heathrow

See travel insights to Philadelphia from

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

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 Philadelphia?

The cheapest month to fly to Philadelphia from London Heathrow Airport is in March. Flight prices, which tend to average around $635, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Philadelphia, with average flight prices from London Heathrow Airport averaging around $668.

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

The cheapest day to depart from London Heathrow Airport to Philadelphia is on a Tuesday. Travelers who choose to depart for Philadelphia on a Tuesday will often find tickets for as low as $760. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $898.

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

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from London Heathrow Airport to Philadelphia in the evening for as low as $704. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the morning when prices are around $829.

What is the cheapest London Heathrow to Philadelphia flight route?

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

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

You are more likely to see cheaper flights to Philadelphia from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $756 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from London Heathrow Airport for as low as $689 on momondo.

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

There are 4 cabin classes available to choose from on London Heathrow to Philadelphia 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 London Heathrow Airport to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Philadelphia.

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

As of July 2025, prices for London Heathrow Airport to Philadelphia flights are approximately 14% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Philadelphia

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

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

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

Best Price Found

$390

Fastest flight time

10h 08m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from London Heathrow Airport in the past 72 hours is $390. The best round-trip flight deal from London Heathrow Airport to Philadelphia found on momondo in the last 72 hours is $472.
The fastest flight from London Heathrow Airport to Philadelphia takes 10h 08m
Direct flights go from London Heathrow Airport to Philadelphia every day.
There is 1 airport near Philadelphia: Philadelphia (PHL)

  • How far is London Heathrow to Philadelphia by plane?

    The straight-line distance from London Heathrow to Philadelphia is 3526.0 mi. By plane, this route typically takes 10h 08m.

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

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

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

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

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The required travel and health documents for your Philadelphia 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 Philadelphia 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 London Heathrow Airport to Philadelphia?

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


Best airlines flying from London Heathrow Airport to Philadelphia

Compare and see reviews for airlines that fly from London Heathrow Airport to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $559Free CancellationRating
7.0
2,824 reviews
Search Iberia flights
American AirlinesPriceFrom $596Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $599Free CancellationRating
6.6
7,103 reviews
Search British Airways flights
FinnairPriceFrom $648Free CancellationRating
7.6
1,312 reviews
Search Finnair flights
Aer LingusPriceFrom $670Free CancellationRating
7.1
1,151 reviews
Search Aer Lingus flights
  • Finnair Flights From London Heathrow Airport to Philadelphia

    The lowest priced Finnair flight from London Heathrow Airport to Philadelphia from the last 72 hours was $648. Generally, Finnair has 20 flights on this route every week with an average price of $767. Finnair is rated 7.6/10 by our users.

  • American Airlines Flights From London Heathrow Airport to Philadelphia

    American Airlines (7.2/10 from 10,000 reviews) operates around 20 flights from London Heathrow Airport to Philadelphia in any given week. The average American Airlines airfare for this route is around $788, with deals from around $596 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Philadelphia flight searches in the last 72 hours.


Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Rehoboth Beach
Cape May
Ocean City
Wildwood Crest
King of Prussia
Reading
Dewey Beach
Newark
Cherry Hill
Dover
North Wildwood
Lewes
Avalon
Stone Harbor
Vineland
Exton
Essington
New Castle
Pottstown

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Philadelphia. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from London to Philadelphia on momondo can be filtered to show those which offer flexible booking policies.

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

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 London to Philadelphia.

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

Yes. momondo can track prices for London to Philadelphia 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 Philadelphia 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.
1 adult
Mon 7/14
Mon 7/21

Find better results for your trip to the United States