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Cheap flights from Philadelphia to London from $229

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

These are some of the best round-trip flight deals from Philadelphia to London that have been recently found on momondo from popular airlines, departing in the coming months.
6:30 pm - 8:10 amPHL-LGW
9h 40m1 stop
8:50 am - 5:00 pmLGW-PHL
12h 10m1 stop
Wed, Mar 19 - Tue, Mar 25
6:30 pm - 8:35 amPHL-LTN
10h 05m1 stop
9:00 am - 5:00 pmLTN-PHL
12h 00m1 stop
Wed, Mar 19 - Tue, Mar 25
6:45 pm - 7:00 amPHL-LHR
31h 15m1 stop
7:00 am - 3:25 pmLHR-PHL
13h 25m1 stop
$593British Airways
Find Deal
Thu, Feb 20 - Sun, Feb 23
9:21 pm - 9:20 amPHL-LHR
6h 59mnonstop
7:50 am - 5:25 pmLHR-PHL
13h 35m1 stop
$629American Airlines
Find Deal
Tue, Feb 11 - Tue, Mar 11
4:00 pm - 8:15 amPHL-LHR
11h 15m1 stop
8:50 am - 4:35 pmLHR-PHL
12h 45m1 stop
$633American Airlines
Find Deal
Thu, Feb 13 - Wed, Feb 19
10:48 am - 7:25 amPHL-LGW
15h 37m1 stop
11:20 am - 9:40 amLGW-PHL
26h 20m1 stop
$639British Airways
Find Deal
Tue, Feb 11 - Tue, Mar 11
6:30 pm - 8:05 amPHL-LHR
9h 35m1 stop
1:25 pm - 7:00 pmLHR-PHL
10h 35m1 stop
$641Aer Lingus
Find Deal
Tue, Mar 25 - Sun, Mar 30
5:30 pm - 8:05 amPHL-LHR
9h 35m1 stop
9:50 am - 5:00 pmLHR-PHL
11h 10m1 stop
$654Aer Lingus
Find Deal
Wed, Mar 5 - Sun, Mar 9
9:16 pm - 9:20 amPHL-LHR
7h 04mnonstop
1:10 pm - 4:20 pmLHR-PHL
8h 10mnonstop
$677Iberia
Find Deal
Fri, Feb 28 - Sun, Mar 2
10:10 pm - 10:20 amPHL-LHR
7h 10mnonstop
12:30 pm - 3:15 pmLHR-PHL
7h 45mnonstop
$705Iberia
Find Deal
Thu, May 8 - Sun, May 18

Aer Lingus flights from Philadelphia to London

Our best Aer Lingus deals on Philadelphia to London flight tickets
Aer Lingus
Mar 25
PHL6:30 pmPhiladelphia
9h 35m
1 stop
LHR8:05 amLondon Heathrow
Mar 30
LHR1:25 pmLondon Heathrow
10h 35m
1 stop
PHL7:00 pmPhiladelphia
Aer Lingus
Mar 5
PHL5:30 pmPhiladelphia
9h 35m
1 stop
LHR8:05 amLondon Heathrow
Mar 9
LHR9:50 amLondon Heathrow
11h 10m
1 stop
PHL5:00 pmPhiladelphia
Aer Lingus
Mar 5
PHL5:30 pmPhiladelphia
9h 35m
1 stop
LHR8:05 amLondon Heathrow
Mar 11
LHR9:50 amLondon Heathrow
11h 10m
1 stop
PHL5:00 pmPhiladelphia

British Airways flights from Philadelphia to London

Our best British Airways deals on Philadelphia to London flight tickets
British Airways
Feb 20
PHL6:45 pmPhiladelphia
31h 15m
1 stop
LHR7:00 amLondon Heathrow
Feb 23
LHR7:00 amLondon Heathrow
13h 25m
1 stop
PHL3:25 pmPhiladelphia
British Airways
Feb 11
PHL10:48 amPhiladelphia
15h 37m
1 stop
LGW7:25 amLondon Gatwick
Mar 11
LGW11:20 amLondon Gatwick
26h 20m
1 stop
PHL9:40 amPhiladelphia
British Airways
Apr 29
PHL7:55 pmPhiladelphia
7h 10m
LHR8:05 amLondon Heathrow
May 8
LHR6:10 amLondon Heathrow
15h 20m
1 stop
PHL4:30 pmPhiladelphia

See travel insights to London from

How to get the cheapest flight ticket from Philadelphia to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Philadelphia and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Philadelphia is in February. Flight prices, which tend to average around $684, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Philadelphia averaging around $695.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Philadelphia to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $827. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,023. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from Philadelphia at noon is the least expensive time of day to depart. momondo users have found prices as low as $764 when looking at flights departing at noon. Flights to London are more costly in the afternoon, with an average ticket price of $904. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Philadelphia to London flight route?

Fly from Philadelphia to London Heathrow for the best Philadelphia - London flight prices

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

You are more likely to see cheaper flights to London from Philadelphia when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to London for around $865 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Philadelphia for as low as $790 on momondo.

What cabin class options are available on Philadelphia to London flights?

There are 4 cabin classes available to choose from on Philadelphia to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Philadelphia to London flight prices changed over time?

As of January 2025, prices for Philadelphia to London flights are approximately 45% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to London

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to London (PHL to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to London

Best Price Found

$229

Fastest flight time

6h 55m

Direct flights

Every day

Airports in London

4 airports
The best one-way flight to London from Philadelphia in the past 72 hours is $229. The best round-trip flight deal from Philadelphia to London found on momondo in the last 72 hours is $527.
The fastest flight from Philadelphia to London takes 6h 55m
Direct flights go from Philadelphia to London every day.
There are 4 airports near London: London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW)

  • How far is Philadelphia to London by plane?

    A flight from Philadelphia to London will travel around 3538.9 mi. Typically, this will take 6h 55m by plane in normal conditions.

  • When did momondo last update prices for flights from Philadelphia Airport to London?

    Prices for flights from Philadelphia Airport to London refresh daily.

  • How many operators does momondo search for flights from Philadelphia Airport to London?

  • How old do you have to be to fly from Philadelphia Airport to London?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to London.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Philadelphia to London?

  • What is the most popular airline from Philadelphia to London?


Best airlines flying from Philadelphia to London

Compare and see reviews for airlines that fly from Philadelphia to London with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $467Free CancellationRating
7.4
3,156 reviews
Search JetBlue flights
LufthansaPriceFrom $525Free CancellationRating
6.7
7,053 reviews
Search Lufthansa flights
Air CanadaPriceFrom $529Free CancellationRating
7.0
8,638 reviews
Search Air Canada flights
American AirlinesPriceFrom $564Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $578Free CancellationRating
7.0
2,642 reviews
Search Iberia flights
Aer LingusPriceFrom $591Free CancellationRating
7.1
1,077 reviews
Search Aer Lingus flights
FinnairPriceFrom $625Free CancellationRating
7.6
1,285 reviews
Search Finnair flights
DeltaPriceFrom $625Free CancellationRating
8.0
8,456 reviews
Search Delta flights
British AirwaysPriceFrom $633Free CancellationRating
6.6
6,796 reviews
Search British Airways flights
United AirlinesPriceFrom $673Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
  • Finnair Flights From Philadelphia to London

    Finnair operates around 14 flights from Philadelphia to London every week. The average price of these flights found in the last 72 hours has been $854, but momondo users have found Finnair deals from Philadelphia to London from as low as $625 round-trip. Finnair has been scored 7.6/10 in 1,285 reviews.

  • American Airlines Flights From Philadelphia to London

    $564 is the best American Airlines flight deal from Philadelphia to London found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to $844, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 10,000 user reviews) flies into London from Philadelphia 14 times in an average week so prices can vary.


Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Croydon
Luton
Slough
Ipswich
Hayes
Stansted
Ilford
Guildford
Canterbury
Horley
Dover
Milton Keynes
Dartford
Colchester
Wembley
Chelmsford
Eastbourne
Worthing

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Philadelphia.

Can I find flights from Philadelphia to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Philadelphia to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Philadelphia to London?

Once you have performed a search for Philadelphia to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Philadelphia to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London