LHR - PHL

Find Cheap Flights from London Heathrow to Philadelphia

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Philadelphia
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London Heathrow to Philadelphia flight information

Flights arrive in Philadelphia
Flights depart from London Heathrow
Flight price £266
Distance 3,535 miles
Airlines Virgin Atlantic, Lufthansa, British Airways, Delta, SWISS

Good to know

Low season:
February
Best time to beat the crowds
4%
expected price decrease
High season:
July
Most popular time to fly
20%
expected price increase
Average price:
£465
(avg. price over the last 2 weeks)
Good deal:
£345
or less (return)

When to Book Flights from London Heathrow to Philadelphia

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

Looking for a cheap flight? 25% of our users found flights on this route for £344 or less.
The cheapest flight from London Heathrow to Philadelphia was found, on average, 76 days before departure.
Book at least 5 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is February.
Morning departure is around 14% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking London Heathrow to Philadelphia Flights

How long does a flight from London Heathrow to Philadelphia take?
The average direct flight takes 11h 40m, covering a distance of 3535 miles.
How many flights are there between London Heathrow and Philadelphia?
There are 317 (direct) flights between London Heathrow and Philadelphia per week, averaging 46 per day.
Which airlines provide the cheapest flights from London Heathrow to Philadelphia?
In the past 3 days, the cheapest return tickets were found on Virgin Atlantic (£266), Lufthansa (£286) and British Airways (£304).
Which airlines fly most frequently between London Heathrow and Philadelphia?
American Airlines (8 times daily), Finnair (8 times daily), Iberia (8 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly from London Heathrow to Philadelphia?
For London Heathrow to Philadelphia, Friday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Philadelphia back to London Heathrow, the best deals are generally found on Friday, with Tuesday being the most expensive.
How does KAYAK find such low flight prices?
KAYAK processes over 2 billion travel queries annually and displays results from hundreds of airlines and third party sites, allowing it to find a variety of flight prices and options. It also displays results from 2M+ properties along with car hire, holiday packages, activities and millions of verified reviews so users can see as many available travel options as possible.
How can Hacker Fares save me money?
Hacker Fares allow you to combine one-way tickets on different airlines when it can save you money over a traditional return ticket.
Does KAYAK query more flight providers than competitors?
Yes, KAYAK has access to more data and information than online travel agencies and consistently outperforms the competition in accuracy, globally.
How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a given destination and date is likely to change within 7 days, so travellers know whether to wait or book now.

Book cheap flights from London Heathrow to Philadelphia (return)

Airports
Origin
London
£266
only
£266
Destination
Philadelphia
£266
only
£266
Fri, 15 Nov
LHR
London Heathrow
PHL
Philadelphia
33h 33m
Sun, 17 Nov
PHL
Philadelphia
LHR
London Heathrow
25h 27m
£266
Trip: 3 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 1,509 reviews
Overall
8.1
Boarding
8.2
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LHR
SFO
Good 6.3

Pros: It was empty so we were told we could move around in the empty seats

Cons: Food was basically carbs, carbs and more carbs (especially if vegetarian). Some diversity, please. Staff forgot requests on a couple of occasions (Economy Delight cabin).

MAN
LAX
Excellent 10.0

Pros: Crew was very attentive...food selection was excellent

Cons: Nothing

LHR
JFK
Okay 5.0

Pros: Crew was generally nice and caring.

Cons: Of course coach seat was not super comfortable. And speaker and screen at my seat did not work.

CHC
BNE
Excellent 8.0

Pros: Amazing and helpful crew. Great seat.

RAR
AKL
Excellent 10.0

Pros: The crew looked after us well

Cons: It was all good

Sat, 1 Feb
LHR
London Heathrow
PHL
Philadelphia
12h 35m
Sat, 8 Feb
PHL
Philadelphia
LHR
London Heathrow
22h 20m
£286
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 26,959 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
KBP
FRA
Mediocre 3.3

Cons: The only company that constantly delays flights. Narrow and uncomfortable places in the business class. They waited 4 days for the suitcase! They are not responsible for receiving compensation for the delay in suitcases! Where to write and call?

KRK
FRA
Good 7.3

Pros: Comfy seat.

Cons: Plane was late, crew was surly.

CAI
FRA
Mediocre 3.6

Pros: Nothing

Cons: Leg room

MAN
MUC
Excellent 10.0

Pros: the crew was great; super well prepared ladies with professional behavior. my compliments. also the snack was excellent and finally no junky food but a healthier offer. bravissimi!!!

Cons: nothing

FRA
SEA
Excellent 10.0

Cons: Excellent assisted transfer between Austrian Airlines flight and Lufthansa flight to Seattle in Frankfurt. Boarding in Frankfurt could have been handled easier in groups by seating. Friendly stewards, good entertainement and food options. Quiet B 747 plane, spacious overhead stowage.

Thu, 9 Jan
LHR
London Heathrow
PHL
Philadelphia
11h 40m
Sun, 26 Jan
PHL
Philadelphia
LHR
London Heathrow
7h 05m
£304
Trip: 18 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 126 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.8
LHR
PHL
Excellent 10.0

Pros: Seats with little fold-down head rests on each side, allowing you to sleep/nap/doze in any seat. Really good touch screens for the entertainment system, with no need to have to dig my knuckles into the screen to get it to respond. Good movie selection too. Movies are also available before take off and even after landing. Acceptable white wine (Chenin Blanc). Food was also entirely acceptable.

Cons: No individual air/temperature controls (at least in economy), unless it was all buried in the seat-back console some how.

LHR
PHL
Excellent 9.0

Cons: The jet was freezing. I had two blankets on and was still shivering for the entire flight.

LHR
PHL
Mediocre 3.3

Pros: The speed of bouncing back from the computer system mishap

Cons: The check in people' rudeness, awful food, slow service

LHR
PHL
Excellent 8.6

Pros: everything was great except seating

Cons: they seated us separately instead of next to each other despite the fact that we selected to be seated together.

TFS
LGW
Okay 5.6

Pros: Crew were good early on but didn’t check later on

Cons: It was ridiculously hot and the crew didn’t offer water after initial drinks run and we were seriously dehydrated. The flight was delayed and although the first half an hour we had excellent service there was no follow up service and the temperature in the plane was really very uncomfortable

Wed, 13 Nov
LHR
London Heathrow
PHL
Philadelphia
17h 30m
Sun, 17 Nov
PHL
Philadelphia
LHR
London Heathrow
14h 24m
£329
Trip: 5 days
9.2ExcellentShow reviews
Overall 9.2 Excellent
Based on 4 reviews
Overall
8.1
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.5
SEA
DEN
Okay 5.0

Cons: My flight was delayed almost 3 hours. Not good. Once in the air it was fine.

SEA
NRT
Excellent 9.0

Pros: Flight was comfortable and smooth all the way

Cons: Tastier food options

BWI
ATL
Good 7.6

Pros: Thanks for the monitors.

Cons: The crew seems tired.

RDU
JAX
Excellent 8.4

Cons: It felt like the flight attendant had a long day. Chairs weren't super comfortable.

SEA
ORD
Okay 5.6

Pros: Nice crew

Cons: No leg room for 6’6” person.

Tue, 22 Oct
LHR
London Heathrow
PHL
Philadelphia
16h 48m
Tue, 29 Oct
PHL
Philadelphia
LHR
London Heathrow
10h 50m
£459
Trip: 8 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 8,721 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.7
Entertainment
7.8
Food
7.9
HAM
ZRH
Good 6.0

Pros: Great helpful flight crew

Cons: Checking our bag was a nightmare. All bag check-in was at kiosk which we couldn't use because we had to pay to check our bag. Had to find a desk in another terminal to check bag, then pay an another desk for said checked bag. We saved money by ticketing this way but we almost missed our flight

LAX
ZRH
Okay 5.0

Cons: We were packed like sardines! My flight made me want to retire from traveling!

LAX
ZRH
Excellent 10.0

Pros: Liked the time of the flight.

Cons: It left late.

TLV
ZRH
Good 7.3

Pros: vegan sweeties for the kids, so nice as my daughter usually has to say no. Also swiss chocolate - so good! Our veggie meals booked hadn't gone through on the system but we were found some they had anyway - wasn't very nice though.

ATH
ZRH
Mediocre 2.0

Cons: Rude ground staff at Athens airport, unable to check in online prior to flight, had to wait in line for over an hour for a connecting flight and run to the gate to then be told I was on standby for my next connecting flight. Poor customer service, no headphones given even though all seats have tv screens - such a small thing can make a difference to overall experience eg providing headphones. The check in and boarding forbthis flight was an absolute joke. Two men were about to have a fight due to how irritated everyone was for standing in line for so long. No need whatsoever. Meanwhile 3 staff sat at the ticketing desk and just watched the line grow! When I asked for assistance they brushed me off as if I were a flea! Athens Swiss airlines ground staff are up there with the worst customer service I’ve seen.

Thu, 12 Dec
LHR
London Heathrow
PHL
Philadelphia
12h 55m
Sun, 15 Dec
PHL
Philadelphia
LHR
London Heathrow
7h 15m
£312
Trip: 4 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 126 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.8
LHR
PHL
Okay 5.6

Pros: Great choice in movies. Really good selection, only good thing about the flight.

Cons: Wow worst flight experience. So hectic! All the American Airlines planes were like overbooked or all scheduled to leave at exactly the same time so the workers were freaking out the passengers were freaking out everyone was like Losing it. They had us all waiting in these series of lines in ropes and they kept having different flight groups raise their hands and keep them raised and like bustling people around to different grouped lines but it never left the one huge room, then security was a disaster and the guy in charge of everything was like having a panic attack being really sassy and rude to everyone. I was starting to feel scared that I would miss it, it's okay though because 38 other people would also miss it and that's just who was behind me. But then we got to the gate and everything was totally fine like why did there have to be so much ado?!

LHR
PHL
Excellent 8.3

Pros: Crew were very pleasant and the seats and cabin were clean and comfortable. Meals were well prepared and dinner arrived hot. Selection of entertainment was good and I enjoyed a couple of movies during the flight. I also appreciated the USB plug to help keep my phone charged while listening to music (in airplane mode, of course!)

Cons: Used my own earbuds with the plane's entertainment system and sound volume was uncomfortably high, even at its lowest setting. Had to try and balance the ear buds on the outer edge of my ear in an effort to try and reduce the volume.

JFK
LHR
Excellent 8.0

Pros: Friendly service

LHR
PHL
Excellent 10.0

Pros: Comfortable flight. Staff were friendly, helpful and accomodating. Food was delicious.

Cons:

LHR
PHL
Good 6.6

Pros: Not bad experience on board

Cons: Buses to load and unload a 777? Is this a joke?

Mon, 28 Oct
LHR
London Heathrow
PHL
Philadelphia
12h 10m
Wed, 6 Nov
PHL
Philadelphia
LHR
London Heathrow
10h 50m
£402
Trip: 10 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 26,959 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
FRA
PHL
Okay 5.3

Pros: Crew was very good. Food was OK.

Cons: Individual space was tight made worse by some inconsiderate people who put their seats as far back as possible. This should be regulated.

IAD
FRA
Excellent 10.0

Pros: I was amazed how comfortable we were in economy. Pillows, Blankets that felt like cotton. I would fly Lufthansa over an american carrier any day. We passed through the business class cabin on the way out and I can only imagine how much they were pampered!

Cons: Since flying in the US has become expensive and painful I was not expecting much from this flight. They exceed my expectations by so much that I cannot think of anything I would change. (Ok, my chicken was a bit over cooked but that was such a minor thing.)

NCE
FRA
Excellent 9.0

Cons: Food was a little underwhelming for First Class.

NBO
FRA
Excellent 9.0

Cons: Wasn't able to online check-in thus losing my window seat 21A I had selected.

DEN
FRA
Mediocre 2.0

Pros: Same as other answe

Cons: Same

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*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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