$287+ Cheap flights from Philadelphia (PHL) to Heathrow (LHR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
Nov 24 — Dec 11
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Philadelphia to Heathrow with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Philadelphia to London Heathrow are usually found in February or January, booked 77 days in advance, depart on a Wednesday or Tuesday and return on a Monday
Cheap flight deals from Philadelphia to Heathrow
Cheapest
Best
Last-minute
One-way
Cheapest flights from Philadelphia to HeathrowExplore the most affordable flight options available from Philadelphia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Philadelphia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This The Travel House deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:33 pm -
1 stop30h 22m
Thu 1/149:20 am -
1 stop28h 17m
Deal found 10/24![JetBlue logo]()
$822
This Aviatur deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aviatur is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:30 am -
1 stop16h 25m
Fri 12/119:20 am -
1 stop14h 23m
Deal found 10/23![JetBlue logo]()
$823
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:33 pm -
1 stop30h 22m
Sat 12/129:20 am -
1 stop28h 19m
Deal found 10/21![JetBlue logo]()
$824
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/39:30 am -
1 stop16h 25m
Wed 12/99:20 am -
1 stop14h 23m
Deal found 10/21![JetBlue logo]()
$827
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/19:30 am -
1 stop16h 25m
Thu 12/109:20 am -
1 stop14h 23m
Deal found 10/21![JetBlue logo]()
$828
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:35 pm -
1 stop10h 20m
Wed 11/119:20 am -
1 stop12h 48m
Deal found 10/21![JetBlue logo]()
$829
This JetBlue deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:45 pm -
1 stop13h 10m
Fri 12/49:20 am -
1 stop14h 23m
Deal found 10/20![JetBlue logo]()
$833
This JetBlue deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:27 am -
1 stop15h 28m
Thu 11/129:20 am -
1 stop16h 51m
Deal found 10/21![JetBlue logo]()
$834
This JetBlue deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:27 am -
1 stop15h 28m
Wed 11/119:20 am -
1 stop12h 48m
Deal found 10/23![JetBlue logo]()
$835
This JetBlue deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:27 am -
1 stop16h 28m
Tue 2/99:20 am -
1 stop15h 49m
Deal found 10/22![JetBlue logo]()
$839
Best flights from Philadelphia to HeathrowDiscover carefully curated flight deals from Philadelphia to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Philadelphia to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/91:39 pm -
2 stops13h 16m
Wed 2/1711:45 am -
2 stops16h 17m
Deal found 10/24![Virgin Atlantic logo]()
$931
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:30 am -
2 stops32h 10m
Wed 12/166:30 pm -
2 stops29h 15m
Deal found 10/23![TAP AIR PORTUGAL logo]()
$945
This JetBlue deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1912:15 pm -
1 stop14h 40m
Mon 3/298:40 am -
1 stop13h 52m
Deal found 10/20![JetBlue logo]()
$947
This Finnair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:35 pm -
Nonstop7h 15m
Wed 12/166:30 am -
1 stop12h 35m
Deal found 10/22![Multiple Airlines logo]()
$975
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:53 am -
2 stops15h 17m
Tue 12/157:30 am -
1 stop13h 35m
Deal found 10/23![United Airlines logo]()
$1,006
This Finnair deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/297:40 pm -
Nonstop7h 10m
Tue 12/810:35 am -
Nonstop8h 10m
Deal found 10/25![Finnair logo]()
$1,023
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/139:30 am -
2 stops32h 10m
Wed 1/206:00 am -
2 stops19h 09m
Deal found 10/24![TAP AIR PORTUGAL logo]()
$947
This Virgin Atlantic deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/86:59 pm -
1 stop11h 41m
Sun 2/146:30 am -
2 stops15h 45m
Deal found 10/24![Virgin Atlantic logo]()
$977
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/109:30 am -
2 stops27h 00m
Thu 1/148:15 am -
2 stops29h 22m
Deal found 10/21![TAP AIR PORTUGAL logo]()
$961
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:30 am -
2 stops22h 10m
Mon 12/216:30 pm -
3 stops42h 07m
Deal found 10/24![Multiple Airlines logo]()
$1,073
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/159:30 am -
2 stops31h 05m
Mon 2/226:30 pm -
2 stops29h 54m
Deal found 10/21![TAP AIR PORTUGAL logo]()
$976
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/129:30 am -
3 stops31h 05m
Sun 1/248:15 am -
3 stops29h 22m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$995
Last-minute flights from Philadelphia to HeathrowDiscover last-minute flight deals from Philadelphia to Heathrow. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Heathrow. Data last updated October 25, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:27 am -
1 stop16h 28m
Tue 2/99:20 am -
1 stop15h 49m
Deal found 10/22![JetBlue logo]()
$839
This Orbitz deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:58 pm -
1 stop31h 57m
Tue 11/109:20 am -
1 stop16h 17m
Deal found 10/20![JetBlue logo]()
$840
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:35 pm -
1 stop10h 20m
Wed 11/119:20 am -
1 stop12h 48m
Deal found 10/21![JetBlue logo]()
$829
This JetBlue deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:27 am -
1 stop15h 28m
Thu 11/129:20 am -
1 stop16h 51m
Deal found 10/21![JetBlue logo]()
$834
This Justfly.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:58 pm -
1 stop31h 57m
Tue 11/179:20 am -
1 stop29h 17m
Deal found 10/23![JetBlue logo]()
$843
This Justfly.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:27 am -
1 stop15h 28m
Thu 11/269:20 am -
1 stop28h 00m
Deal found 10/20![JetBlue logo]()
$842
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:27 am -
1 stop15h 28m
Sun 11/229:20 am -
1 stop14h 34m
Deal found 10/21![JetBlue logo]()
$828
This FlightHub deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:45 pm -
1 stop30h 10m
Wed 12/99:20 am -
1 stop14h 23m
Deal found 10/20![JetBlue logo]()
$841
This JetBlue deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:45 pm -
1 stop13h 10m
Fri 12/49:20 am -
1 stop14h 23m
Deal found 10/20![JetBlue logo]()
$833
This CheapOair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:45 pm -
1 stop30h 10m
Thu 12/39:20 am -
1 stop28h 19m
Deal found 10/22![JetBlue logo]()
$845
One-way flights from Philadelphia to HeathrowSearch for one-way flight options from Philadelphia to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Philadelphia to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This oojo deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:27 am -
1 stop15h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![JetBlue logo]()
$287
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:35 pm -
1 stop10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![JetBlue logo]()
$290
This oojo deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:33 pm -
1 stop30h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![JetBlue logo]()
$292
This Expedia deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:00 am -
1 stop18h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![JetBlue logo]()
$295
This JetBlue deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:45 pm -
1 stop13h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![JetBlue logo]()
$299
This CheapOair deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:33 pm -
1 stop30h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![JetBlue logo]()
$310
This FlightHub deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/58:59 pm -
1 stop28h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![JetBlue logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/129:09 pm -
3 stops39h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$318
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/109:54 am -
1 stop16h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![JetBlue logo]()
$324
This BusinessClass deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:33 pm -
1 stop30h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![JetBlue logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/119:07 pm -
2 stops36h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$329
Find flight deals from Philadelphia to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $822 (The Travel House) |
One-way from | $287 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,099 |
Good round-trip deal | $793 or less |
Good one-way deal | $465 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to Heathrow 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, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
Use the filters below to find and compare flights from Philadelphia to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Mon 4/12
6:45 pm-6:50 am
Nonstop7h 05m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$350
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Wed 3/10
1:00 pm-9:00 am
2 stops15h 00m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$354
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Fri 11/6
3:35 pm-6:55 am
1 stop10h 20m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$393
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Fri 1/15
9:30 am-6:55 am
1 stop16h 25m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$393
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Thu 12/31
9:29 am-6:55 am
1 stop16h 26m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$394
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Tue 11/17
5:40 pm-9:05 pm
1 stop22h 25m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$400
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Fri 11/20
7:20 am-12:50 pm
3 stops48h 30m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$469
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Tue 12/29
1:38 pm-10:50 am
2 stops16h 12m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$596
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Sun 1/10
9:30 am-5:30 pm
3 stops27h 00m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$629
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Tue 2/9
1:39 pm-7:55 am
2 stops13h 16m
London Heathrow
Wed 2/17
11:45 am-11:02 pm
2 stops16h 17m
$931
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Philadelphia to Heathrow
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Heathrow in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Philadelphia-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-London Heathrow Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Philadelphia to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Philadelphia with our price prediction graph.
PHL-LHR
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Philadelphia to London Heathrow Airport
Prices
More
How far ahead should I book a flight from Philadelphia to London Heathrow Airport?
Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Philadelphia to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of $713). Flying from Philadelphia to London Heathrow Airport in June is currently the most expensive (average of $1,490). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHL to LHR?
Find hourly flight availability from Philadelphia to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 25, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to London Heathrow Airport as you normally would.
What’s the top layover airport for flights from Philadelphia to London Heathrow Airport?
Share of 1-stop round-trip flights from Philadelphia to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Dublin (DUB) – chosen by Cheapflights users on 91% of 1-stop itineraries from Philadelphia to London Heathrow Airport on Cheapflights.
What’s the cheapest layover airport for flights from Philadelphia to London Heathrow Airport?
Average round-trip fare for 1-stop flights from Philadelphia to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Dublin (DUB) is the most affordable 1-stop option, with an average round-trip price of $806.
What’s the fastest layover option from Philadelphia to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from Philadelphia to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 9h 36m.
Which airport typically offers the quickest layover for flights from Philadelphia to London Heathrow Airport?
Average layover duration for 1-stop one-way flights from Philadelphia to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Dublin (DUB) offer the fastest connection on this route, with an average layover time of 1h 54m.
The best insider tips for Philadelphia to London Heathrow Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to London Heathrow Airport trip
Our travel experts
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated October 25, 2026.
Peruse reviews from past customers who have flown with Aer Lingus,JetBlue, andAmerican Airlines from Philadelphia to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.5
Crew
8.1
Food
6.7
Overall
7.3
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
DUB - EDI
Boarding
7.5
Crew
8.1
Food
6.7
Overall
7.3
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
DUB - EDI
Boarding
7.5
Crew
8.1
Food
6.7
Overall
7.3
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
DUB - EDI
Boarding
7.5
Crew
8.1
Food
6.7
Overall
7.3
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
DUB - EDI
Boarding
7.5
Crew
8.1
Food
6.7
Overall
7.3
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
DUB - EDI
Boarding
7.5
Crew
8.1
Food
6.7
Overall
7.3
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
DUB - EDI
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
Dorking
Gatwick
Hounslow
Wembley
Harrow
Southend-on-Sea
Basingstoke
Watford
Northampton
Dartford
Winchester
Croydon
Kingston upon Thames
Chipping Norton
Slough
Eastbourne
Stansted
Sutton
Luton
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Heathrow flight routes
Other flight options
Other flights from Philadelphia
Popular flights
Alternative routes for Philadelphia to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to Heathrow by cabin class
Find flights from Philadelphia to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
Philadelphia and Heathrow flights
Browse other Philadelphia and Heathrow flight options. Last updated on October 25, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Philadelphia to Heathrow
Discover the top 6 airlines that operate flights from Philadelphia to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$590 | Average$1,082 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$609 | Average$908 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$631 | Average$1,098 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$635 | Average$1,101 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$640 | Average$753 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$651 | Average$1,076 | FlexibilityNo cancel fee | On-time77% |