Cheap flights from Philadelphia (PHL) to London (LON)

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The best prices from Philadelphia to London are usually found in February or January, booked 39 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

How to find the cheapest flight from
Philadelphia (PHL) to London (LON)

All the information you need to plan the best PHL to LON flight in 2021: compare Philadelphia to London flight prices with the expected peak season, weather and rainfall in London.
PHL - LON
Price
$537 - $902
LON
Temperature
48.2 - 73.4 °F
LON
Rainfall
1.4 - 2.8 inches

Popular in

June

High demand for flights, 26% potential price rise

Cheapest in

February

Best time to find cheap flights, 20% potential price drop

Round-trip from

$537

From Philadelphia to London

One-way from

$355

One-way flight from Philadelphia to London

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Philadelphia to London?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 15% when planning your travel around this day of the week.

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

To save on the cost of your flight from Philadelphia to London, book at least 61 days before your planned departure. Booking around this time can save you about 44% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $910 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,146.

What is the cheapest month to fly from Philadelphia to London?

October is one of the best times of the year to fly to London from Philadelphia. Prices for October average $714 per person but you can even find prices for as low as $445. The most expensive prices can be found in the month of July. Opting for a October flight can save you 31% on your journey compared to booking in October

When is the cheapest time to fly from Philadelphia to London (PHL - LON)?

A simple way to save on the total cost of your ticket is to fly from Philadelphia to London in the evening. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the morning.

Cheap flights from Philadelphia to London in May, June 2021

The best prices found for PHL to LON flights for May, June
16 Jun - 23 Jun
$571pp
PHL
Philadelphia
Multiple Airlines
 
1 STOP
STN
London Stansted
STN
London Stansted
Multiple Airlines
 
1 STOP
PHL
Philadelphia
9 Jun - 16 Jun
$585pp
PHL
Philadelphia
Multiple Airlines
 
1 STOP
STN
London Stansted
STN
London Stansted
Multiple Airlines
 
1 STOP
PHL
Philadelphia
21 Jun - 6 Jul
$597pp
PHL
Philadelphia
Multiple Airlines
 
1 STOP
STN
London Stansted
STN
London Stansted
Multiple Airlines
 
1 STOP
PHL
Philadelphia

Philadelphia to London 2021 flight deals

Cheap flights to London from Philadelphia found for this year
16 Jun - 23 Jun
$571pp
PHL
Philadelphia
Multiple Airlines
 
1 STOP
STN
London Stansted
STN
London Stansted
Multiple Airlines
 
1 STOP
PHL
Philadelphia
9 Jun - 16 Jun
$585pp
PHL
Philadelphia
Multiple Airlines
 
1 STOP
STN
London Stansted
STN
London Stansted
Multiple Airlines
 
1 STOP
PHL
Philadelphia
24 Aug - 7 Sep
$591pp
PHL
Philadelphia
Multiple Airlines
 
1 STOP
STN
London Stansted
STN
London Stansted
Multiple Airlines
 
1 STOP
PHL
Philadelphia

Non-stop flights to London from Philadelphia

Save time with Philadelphia to London direct flight deals
9 Nov - 16 Nov
$841pp
PHL
Philadelphia
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
PHL
Philadelphia
4 Oct - 3 Nov
$860pp
PHL
Philadelphia
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
PHL
Philadelphia
2 Oct - 12 Oct
$890pp
PHL
Philadelphia
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
PHL
Philadelphia

Last minute flights from Philadelphia to London

Late deals on round-trip flights to London from Philadelphia, departing today and this week
25 May - 31 May
$735pp
PHL
Philadelphia
Multiple Airlines
     
3 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
 
1 STOP
PHL
Philadelphia
25 May - 25 Jun
$771pp
PHL
Philadelphia
TAP AIR PORTUGAL
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
   
2 STOPS
PHL
Philadelphia
25 May - 25 Jun
$780pp
PHL
Philadelphia
TAP AIR PORTUGAL
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
   
2 STOPS
PHL
Philadelphia

One-way flights to London from Philadelphia

The cheapest one-way flights from Philadelphia to London
5:55 pm - 6:20 am
Finnair
Nonstop
7h 25m
PHL - LHR
Finnair
$355
Kiwi.com
7:00 am - 2:50 am
Iberia
1 Stop
14h 50m
PHL - LHR
Iberia
$397
SnapTravelAir
3:00 am - 11:35 am
TAP AIR PORTUGAL
2 Stops
27h 35m
PHL - LGW
TAP AIR PORTUGAL

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Philadelphia</span> to <span class="emphasized">London</span> flights.

Flight FAQs

From Philadelphia to London

Are flight prices decreasing from Philadelphia to London due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Philadelphia and London for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Philadelphia to London have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like British Airways, American Airlines, and Aer Lingus flying from Philadelphia to London have implemented new flexible cancellation policies.

What airport do you fly from for flights from Philadelphia to London?

If you book a flight to London from Philadelphia, you will be flying from Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia. There are 7 flights from Philadelphia to London per day from 11 different airlines.

Can I find flights from Philadelphia to London for under $600 on Cheapflights?

Yes, there are multiple flights from Philadelphia to London for under $600. The cheapest flight booked recently is on Multiple Airlines for just $585, but on average you can expect to pay $608.

Are there nonstop flights from Philadelphia to London for under $900 on Cheapflights?

Cheapflights has at least 20 direct flights from Philadelphia to London under $900. A good price for a nonstop flight from Philadelphia to London is less than $946.

Are there last-minute flights available from Philadelphia to London for under $800?

There are currently 20+ open flights from Philadelphia to London within the next 7 days for less than $800.

What days are nonstop flights available from Philadelphia to London?

You can find nonstop flights on the following days: Tuesday, Wednesday.

Is Philadelphia weather warmer or cooler than London?

Temperatures around the 88 °F's can be experienced in July. The weather in London is colder than in Philadelphia. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Philadelphia to London?

Departing from Philadelphia to London will take you 9h 55m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What is the cheapest airline to fly from Philadelphia to London round-trip?

Our cheapest airline available from Philadelphia to London is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as $608 on this airline. TAP AIR PORTUGAL is priced at 8% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Philadelphia to London one-way?

The cheapest airlines for a one-way flight from Philadelphia to London are Finnair ($327), TAP AIR PORTUGAL ($336), and Iberia ($397).

Alternative routes for Philadelphia to London

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for London

Things to know before you go - useful duration and weather info for your trip from Philadelphia to London.
Today's exchange rate
$1 = £0.71
Average temperature for May in London
64.4 °F
Avg rainfall for May in London
2.0 ″

Airports servicing Philadelphia

Airports servicing London

Gatwick (LGW)
City (LCY)
Stansted (STN)
Luton (LTN)
Southend (SEN)

Top 10 airlines flying from Philadelphia to London

The chart below displays the airlines Cheapflights users traveling from Philadelphia to London choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Delta
$484 $691 No cancel fee N/A
Virgin Atlantic
$499 $711 No cancel fee 72%
Icelandair
$407 $734 No cancel fee 76%
Iberia
$475 $735 No cancel fee 77%
American Airlines
$434 $776 No cancel fee 71%
Aer Lingus
$518 $803 No cancel fee N/A
United Airlines
$401 $810 No cancel fee 69%
Finnair
$463 $813 No cancel fee 76%
Lufthansa
$513 $826 No cancel fee 76%
British Airways
$434 $865 No cancel fee 70%

Hourly flight availability from Philadelphia to London

See what time of day planes typically take off from Philadelphia towards London.
Evening 6 PM to midnight 100% of PHL to LON departures
Early morning Midnight to 6 AM 0% of PHL to LON departures
Morning 6 AM to noon 0% of PHL to LON departures
Afternoon Noon to 6 PM 0% of PHL to LON departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Philadelphia to London
See how many times per day planes take to the skies headed from Philadelphia to London.
Sunday
7 daily flights
Monday
7 daily flights
Tuesday
7 daily flights
Wednesday
7 daily flights
Thursday
7 daily flights
Friday
7 daily flights
Saturday
7 daily flights
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