Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Philadelphia to London from $194

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 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

 Logo
7:05 pm - 10:00 amPHL-LGW
33h 55m1 stop
 Logo
10:00 am - 1:29 pmLGW-PHL
32h 29m1 stop
Wed, Jul 30 - Tue, Sep 9
 Logo
6:13 am - 10:00 amPHL-LGW
22h 47m1 stop
 Logo
10:00 am - 1:29 pmLGW-PHL
32h 29m1 stop
Tue, Jul 29 - Tue, Sep 9
Iberia Logo
8:45 pm - 7:50 amPHL-LHR
7h 05mnonstop
Iberia Logo
7:30 am - 3:35 pmLHR-PHL
13h 05m1 stop
$509Iberia
Find Deal
Wed, Oct 29 - Fri, Nov 7
Iberia Logo
6:35 pm - 10:25 amPHL-LHR
10h 50m1 stop
Iberia Logo
7:25 am - 3:35 pmLHR-PHL
13h 10m1 stop
$513Iberia
Find Deal
Wed, Nov 12 - Wed, Nov 19
British Airways Logo
6:30 pm - 6:40 amPHL-LHR
7h 10mnonstop
British Airways Logo
7:55 am - 2:00 pmLHR-PHL
11h 05m1 stop
$549British Airways
Find Deal
Sun, Sep 21 - Wed, Oct 1
Aer Lingus Logo
8:30 pm - 11:10 amPHL-LHR
9h 40m1 stop
Aer Lingus Logo
1:25 pm - 7:00 pmLHR-PHL
10h 35m1 stop
$551Aer Lingus
Find Deal
Wed, Aug 13 - Tue, Sep 2
British Airways Logo
6:35 pm - 6:40 amPHL-LHR
7h 05mnonstop
British Airways Logo
7:10 am - 2:05 pmLHR-PHL
11h 55m1 stop
$553British Airways
Find Deal
Tue, Aug 19 - Thu, Aug 28
American Airlines Logo
7:45 pm - 7:50 amPHL-LHR
7h 05mnonstop
American Airlines Logo
7:50 am - 1:55 pmLHR-PHL
11h 05m1 stop
$555American Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 14
American Airlines Logo
5:52 pm - 9:15 amPHL-LHR
10h 23m1 stop
American Airlines Logo
7:50 am - 1:55 pmLHR-PHL
11h 05m1 stop
$559American Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 14
Aer Lingus Logo
8:30 pm - 11:10 amPHL-LHR
9h 40m1 stop
Aer Lingus Logo
12:00 pm - 7:00 pmLHR-PHL
12h 00m1 stop
$571Aer Lingus
Find Deal
Tue, Aug 26 - Tue, Sep 2

Iberia flights from Philadelphia to London

Our best Iberia deals on Philadelphia to London flight tickets
Iberia
Oct 29
PHL8:45 pmPhiladelphia
7h 05m
LHR7:50 amLondon Heathrow
Nov 7
LHR7:30 amLondon Heathrow
13h 05m
1 stop
PHL3:35 pmPhiladelphia
Iberia
Nov 12
PHL6:35 pmPhiladelphia
10h 50m
1 stop
LHR10:25 amLondon Heathrow
Nov 19
LHR7:25 amLondon Heathrow
13h 10m
1 stop
PHL3:35 pmPhiladelphia
Iberia
Aug 20
PHL7:40 pmPhiladelphia
7h 15m
LHR7:55 amLondon Heathrow
Aug 26
LHR12:30 pmLondon Heathrow
8h 05m
PHL3:35 pmPhiladelphia

American Airlines flights from Philadelphia to London

Our best American Airlines deals on Philadelphia to London flight tickets
American Airlines
Nov 4
PHL7:45 pmPhiladelphia
7h 05m
LHR7:50 amLondon Heathrow
Nov 14
LHR7:50 amLondon Heathrow
11h 05m
1 stop
PHL1:55 pmPhiladelphia
American Airlines
Nov 4
PHL5:52 pmPhiladelphia
10h 23m
1 stop
LHR9:15 amLondon Heathrow
Nov 14
LHR7:50 amLondon Heathrow
11h 05m
1 stop
PHL1:55 pmPhiladelphia
American Airlines
Aug 20
PHL6:35 pmPhiladelphia
7h 05m
LHR6:40 amLondon Heathrow
Aug 27
LHR7:50 amLondon Heathrow
13h 10m
1 stop
PHL4:00 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 $664, 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 $689.

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 $811. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $981. 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 $888. 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 18 weeks ahead of your departure date. In general, you can expect to find flights to London for around $841 when searching 18 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 $744 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 May 2025, prices for Philadelphia to London flights are approximately 16% more expensive 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

$194

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 $194. The best round-trip flight deal from Philadelphia to London found on momondo in the last 72 hours is $454.
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 City (LCY), London Heathrow (LHR), 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 7h 00m 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 $546Free CancellationRating
7.3
2,927 reviews
Search JetBlue flights
British AirwaysPriceFrom $560Free CancellationRating
6.6
6,955 reviews
Search British Airways flights
Aer LingusPriceFrom $575Free CancellationRating
7.1
1,103 reviews
Search Aer Lingus flights
IberiaPriceFrom $613Free CancellationRating
7.0
2,755 reviews
Search Iberia flights
FinnairPriceFrom $645Free CancellationRating
7.6
1,285 reviews
Search Finnair flights
American AirlinesPriceFrom $650Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $673Free CancellationRating
7.4
8,756 reviews
Search United Airlines flights
LufthansaPriceFrom $768Free CancellationRating
6.7
7,105 reviews
Search Lufthansa flights
  • Finnair Flights From Philadelphia to London

    Finnair operates around 21 flights from Philadelphia to London every week. The average price of these flights found in the last 72 hours has been $808, but momondo users have found Finnair deals from Philadelphia to London from as low as $645 round-trip. Finnair has been scored 7.6/10 in 1,285 reviews.

  • American Airlines Flights From Philadelphia to London

    $650 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 $869, 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 21 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
Slough
Luton
Guildford
Dartford
Dover
Stansted
Hayes
Milton Keynes
Colchester
Ilford
Canterbury
Chelmsford
Watford
Richmond
Wembley
Crawley
Hook

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.


An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 6/3
Tue 6/10

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
OSZAR »