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Cheap flights from Philadelphia to London from £184

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 12/3. 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 return flights

These are some of the best return flight deals from Philadelphia to London that have been recently found on momondo from popular airlines, departing in the coming months.
18:30 - 08:10PHL-LGW
9h 40m1 stop
08:50 - 17:00LGW-PHL
12h 10m1 stop
Wed, 19 Mar - Tue, 25 Mar
22:59 - 10:00PHL-LGW
31h 01m1 stop
12:45 - 14:39LGW-PHL
29h 54m2 stops
Sun, 9 Mar - Thu, 13 Mar
10:22 - 05:55PHL-LHR
14h 33m1 stop
08:25 - 17:25LHR-PHL
14h 00m1 stop
£469JetBlue
Find Deal
Tue, 25 Feb - Mon, 3 Mar
10:11 - 05:30PHL-LHR
15h 19m1 stop
08:25 - 16:52LHR-PHL
13h 27m1 stop
£471JetBlue
Find Deal
Sat, 29 Mar - Wed, 2 Apr
10:48 - 07:25PHL-LGW
15h 37m1 stop
11:20 - 09:40LGW-PHL
26h 20m1 stop
£513British Airways
Find Deal
Tue, 11 Feb - Tue, 11 Mar
17:30 - 09:05PHL-LHR
10h 35m1 stop
08:50 - 17:00LHR-PHL
12h 10m1 stop
£518Aer Lingus
Find Deal
Sun, 2 Mar - Sun, 9 Mar
17:30 - 08:05PHL-LHR
9h 35m1 stop
09:50 - 17:00LHR-PHL
11h 10m1 stop
£525Aer Lingus
Find Deal
Wed, 5 Mar - Mon, 10 Mar
10:50 - 07:30PHL-LGW
15h 40m1 stop
11:00 - 15:30LGW-PHL
33h 30m1 stop
£566British Airways
Find Deal
Fri, 14 Feb - Tue, 18 Feb
19:40 - 06:35PHL-LHR
6h 55mdirect
07:25 - 17:00LHR-PHL
13h 35m1 stop
£586Iberia
Find Deal
Wed, 12 Mar - Wed, 19 Mar
22:15 - 09:20PHL-LHR
7h 05mdirect
10:15 - 14:05LHR-PHL
7h 50mdirect
£622Iberia
Find Deal
Wed, 12 Mar - Sun, 16 Mar

American Airlines flights from Philadelphia to London

Our best American Airlines deals on Philadelphia to London flight tickets
American Airlines
23 Feb
PHL21:16Philadelphia
7h 04m
LHR09:20London Heathrow
4 Mar
LHR09:50London Heathrow
11h 45m
1 stop
PHL16:35Philadelphia
American Airlines
23 Feb
PHL21:21Philadelphia
11h 04m
1 stop
LHR13:25London Heathrow
6 Mar
LHR09:50London Heathrow
11h 45m
1 stop
PHL16:35Philadelphia
American Airlines
22 Apr
PHL15:37Philadelphia
11h 03m
1 stop
LHR07:40London Heathrow
14 May
LHR07:50London Heathrow
12h 55m
1 stop
PHL15:45Philadelphia

Air Canada flights from Philadelphia to London

Our best Air Canada deals on Philadelphia to London flight tickets
Air Canada
23 Feb
PHL15:30Philadelphia
10h 40m
1 stop
LHR07:10London Heathrow
4 Mar
LHR06:50London Heathrow
13h 00m
2 stops
PHL14:50Philadelphia
Air Canada
25 Feb
PHL15:30Philadelphia
24h 05m
2 stops
LHR20:35London Heathrow
5 Mar
LHR06:50London Heathrow
13h 00m
2 stops
PHL14:50Philadelphia
Air Canada
26 Feb
PHL09:00Philadelphia
17h 10m
2 stops
LHR07:10London Heathrow
6 Mar
LHR06:50London Heathrow
13h 00m
2 stops
PHL14:50Philadelphia

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 £550, 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 £558.

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

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £615. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to London for around £770.

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

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £535. Flights at midday are often more expensive, with an average ticket price of £794.

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 £695 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 £635 on momondo.

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

There are 3 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 return 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

£184

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 £184. The best return flight deal from Philadelphia to London found on momondo in the last 72 hours is £423.
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?

    The distance between Philadelphia and London is about 3538.9 mi. A reasonable flight in good conditions will take 6h 55m.

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

    Prices for flights from Philadelphia Airport to London are updated 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 travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted 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
IberiaPriceFrom £468Free CancellationRating
7.0
2,642 reviews
Search Iberia flights
British AirwaysPriceFrom £492Free CancellationRating
6.6
6,796 reviews
Search British Airways flights
JetBluePriceFrom £493Free CancellationRating
7.4
3,153 reviews
Search JetBlue flights
Aer LingusPriceFrom £532Free CancellationRating
7.1
1,077 reviews
Search Aer Lingus flights
  • Aer Lingus Flights From Philadelphia to London

    The lowest priced Aer Lingus flight from Philadelphia to London from the last 72 hours was £662. Generally, Aer Lingus has 4 flights on this route every week with an average price of £877. Aer Lingus is rated 7.1/10 by our users.

  • Iberia Flights From Philadelphia to London

    £583 is the best Iberia flight deal from Philadelphia to London found on momondo over the last 72 hours. The average Iberia ticket price found was closer to £762, however, with flight time and availability significantly affecting the price. Iberia (7.0/10 from 2,642 user reviews) flies into London from Philadelphia 14 times in an average week so prices can vary.


Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Slough
Southend-on-Sea
Ipswich
Gatwick
Maidstone
Margate
Hounslow
Canterbury
Ilford
Colchester
Dartford
Winchester
Chichester
Guildford
Hayes
Bishop's Stortford
Crawley

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to London. momondo saves you time and could save you money on your trip.

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

Yes. All flights to London from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Philadelphia to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Philadelphia to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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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