S$591 Cheap Flights from Philadelphia to London

View S$591 flight on Mon, 1 Dec, 2025Opens 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 S$591 for one-way flights and S$938 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$938 Return, found 6 days ago
S$938
Return
found 6 days ago
Select United flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$938 found 6 days ago
United
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$947 Return, found 6 days ago
S$947
Return
found 6 days ago
Select United flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$947 found 6 days ago
Lufthansa
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$950 Return, found 6 days ago
S$950
Return
found 6 days ago
Select Lufthansa flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$950 found 6 days ago
United
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$1,008 Return, found 6 days ago
S$1,008
Return
found 6 days ago
Select United flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$1,008 found 6 days ago
Air Canada
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$1,009 Return, found 6 days ago
S$1,009
Return
found 6 days ago
Select Air Canada flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$1,009 found 6 days ago
Air Canada
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$1,016 Return, found 6 days ago
S$1,016
Return
found 6 days ago
Select Air Canada flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$1,016 found 6 days ago
United
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$1,018 Return, found 6 days ago
S$1,018
Return
found 6 days ago
Select United flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$1,018 found 6 days ago
Lufthansa
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$1,020 Return, found 6 days ago
S$1,020
Return
found 6 days ago
Select Lufthansa flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$1,020 found 6 days ago
British Airways
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$1,037 Return, found 6 days ago
S$1,037
Return
found 6 days ago
Select British Airways flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$1,037 found 6 days ago
Delta
Mon, 2 Feb - Mon, 9 Feb
PHL
Philadelphia
LHR
London
S$1,044 Return, found 6 days ago
S$1,044
Return
found 6 days ago
Select Delta flight, departing Mon, 2 Feb from Philadelphia to London, returning Mon, 9 Feb, priced at S$1,044 found 6 days ago

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

November is typically the cheapest month to fly

From S$616 - S$1,198 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 S$938. 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

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Heathrow
Return price
S$938
Distance
5656 km
Average flight time
12 hours 6 mins

Book with confidence

Book with confidence

Flights from Philadelphia to London

There are several airlines that operate frequent flights from Philadelphia (PHL) to London (LHR) including

The earliest flight leaves Philadelphia Intl. Airport at 18:04 and arrives at Heathrow Airport at 06:35. The last flight of the day departs Philadelphia at 23:20 and arrives at London at 10:15.

The flight distance from Philadelphia to London is about 5720 km, the shortest flight is 06 hours 55 minutes with WestJet.

Expedia lets you search across the largest number of airlines and London flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Philadelphia London flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Philadelphia to London trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your London flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Philadelphia to London with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Flights from Philadelphia to London

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