€278 Cheap Flights Philadelphia to London (PHL-LHR)

View €278 flight on Sun, 3 May 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR)

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Cheap flights from Philadelphia to London (PHL-LHR)

Prices were available within the past 7 days and start at €278 for one-way flights and €753 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Sat, 2 May - Wed, 6 May
PHL
Philadelphia
LHR
London
€753 Return, found 9 hours ago
€753
Return
found 9 hours ago
Select JetBlue Airways flight, departing Sat, 2 May from Philadelphia to London, returning Wed, 6 May, priced at €753 found 9 hours ago
American Airlines
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€765 Return, found 3 days ago
€765
Return
found 3 days ago
Select American Airlines flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €765 found 3 days ago
Iberia
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€767 Return, found 3 days ago
€767
Return
found 3 days ago
Select Iberia flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €767 found 3 days ago
American Airlines
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€769 Return, found 3 days ago
€769
Return
found 3 days ago
Select American Airlines flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €769 found 3 days ago
American Airlines
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€769 Return, found 3 days ago
€769
Return
found 3 days ago
Select American Airlines flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €769 found 3 days ago
British Airways
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€770 Return, found 3 days ago
€770
Return
found 3 days ago
Select British Airways flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €770 found 3 days ago
Iberia
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€777 Return, found 3 days ago
€777
Return
found 3 days ago
Select Iberia flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €777 found 3 days ago
British Airways
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€806 Return, found 3 days ago
€806
Return
found 3 days ago
Select British Airways flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €806 found 3 days ago
British Airways
Sun, 24 Jan - Mon, 1 Feb
PHL
Philadelphia
LHR
London
€806 Return, found 3 days ago
€806
Return
found 3 days ago
Select British Airways flight, departing Sun, 24 Jan from Philadelphia to London, returning Mon, 1 Feb, priced at €806 found 3 days ago
Aer Lingus
Sun, 3 May - Tue, 12 May
PHL
Philadelphia
LHR
London
€817 Return, found 6 days ago
€817
Return
found 6 days ago
Select Aer Lingus flight, departing Sun, 3 May from Philadelphia to London, returning Tue, 12 May, priced at €817 found 6 days ago

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to London City LCY. Closest option available. Average driving time to city centre is 21 minutes. Flights from €1,762
LCY
London City
Closest
Average driving time to city centre21 min
Flights from €1,762

Find the cheapest month to fly from Philadelphia (PHL) to London (LHR)

May is typically the cheapest month to fly

From €620 - €936 per traveller.

Frequently asked questions

How much is a flight from PHL to London Heathrow?
The lowest price advertised for a round-trip journey from Philadelphia Intl. Airport (PHL) to LHR is €753. But you better move fast. This price is taken from fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Philadelphia Intl. Airport (PHL) to Heathrow Airport?
Most flights can be cancelled online, but each air carrier has its own set of terms and conditions. If you do decide to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Philadelphia Airport to LHR flights, you'll see a "no change fees" filter for you to select.
How far is the flight from PHL to LHR?
With a flight distance of 5,700 kilometres between Philadelphia and Hounslow, this is a long-haul journey. Be sure to stay hydrated and take a short walk down the aisle from time to time.
Which airlines fly direct from Philadelphia Airport to Heathrow Airport?
A leading airline that operates on the route from PHL to London Heathrow is British Airways (BA). It offers 30 flights every month. Another airline operating on this route is American Airlines (AA). You'll have 26 flights a month to select from.
Are Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) at the last minute could be your ticket to a great deal. However, it might cost you a whole lot more! If you'd rather avoid the risk, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Delta, Finnair, JetBlue Airways, KLM, Lufthansa, United, Virgin Atlantic
Return price
€752
Distance
5656 km
Average flight time
12 hours 13 mins

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