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Cheap flights from Philadelphia to London from £158

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 5/3. 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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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.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Philadelphia to London.

Cheap last-minute flights

Planning a quick getaway from Philadelphia to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Philadelphia to London

Find recent round-trip train or bus tickets from Philadelphia to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
12:30 - 08:15PHL-LGW
14h 45m1 stop
14:00 - 10:58LGW-PHL
25h 58m1 stop
Mon, 20 Jan - Fri, 24 Jan
10:59 - 08:05PHL-LGW
16h 06m1 stop
12:00 - 11:57LGW-PHL
27h 57m1 stop
Wed, 5 Mar - Mon, 10 Mar
11:10 - 05:55PHL-LHR
13h 45m1 stop
08:25 - 18:38LHR-PHL
15h 13m1 stop
£458JetBlue
Find Deal
Thu, 30 Jan - Mon, 3 Feb
19:53 - 05:55PHL-LHR
29h 02m1 stop
08:25 - 19:07LHR-PHL
15h 42m1 stop
£458JetBlue
Find Deal
Sun, 19 Jan - Tue, 28 Jan
18:40 - 06:35PHL-LHR
6h 55mdirect
06:30 - 16:35LHR-PHL
15h 05m1 stop
£553British Airways
Find Deal
Tue, 4 Feb - Tue, 18 Feb
21:31 - 18:55PHL-LHR
16h 24m1 stop
06:30 - 16:35LHR-PHL
15h 05m1 stop
£556British Airways
Find Deal
Tue, 4 Feb - Tue, 18 Feb
18:30 - 06:40PHL-LHR
7h 10mdirect
10:05 - 12:50LHR-PHL
7h 45mdirect
£574Iberia
Find Deal
Tue, 22 Apr - Wed, 30 Apr
22:15 - 09:20PHL-LHR
7h 05mdirect
10:05 - 12:50LHR-PHL
7h 45mdirect
£612Iberia
Find Deal
Fri, 28 Mar - Fri, 18 Apr
17:30 - 10:45PHL-LCY
12h 15m1 stop
06:50 - 17:00LCY-PHL
14h 10m1 stop
£803Aer Lingus
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Fri, 7 Mar - Wed, 12 Mar
20:30 - 12:45PHL-LCY
11h 15m1 stop
11:30 - 19:00LCY-PHL
12h 30m1 stop
£817Aer Lingus
Find Deal
Wed, 30 Apr - Sat, 10 May
10:59 - 08:05PHL-LGW
16h 06m1 stop
Wed, 5 Mar
12:30 - 08:15PHL-LGW
14h 45m1 stop
Mon, 20 Jan
11:10 - 05:55PHL-LHR
13h 45m1 stop
£205JetBlue
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Tue, 28 Jan
11:10 - 05:55PHL-LHR
13h 45m1 stop
£208JetBlue
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Mon, 27 Jan
19:40 - 06:35PHL-LHR
6h 55mdirect
£376British Airways
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Tue, 11 Mar
18:40 - 06:35PHL-LHR
6h 55mdirect
£380British Airways
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Sun, 2 Feb
18:30 - 12:40PHL-LCY
14h 10m1 stop
£384Aer Lingus
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Sun, 16 Mar
22:00 - 18:50PHL-LGW
16h 50m1 stop
£390Iberia
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Tue, 11 Mar
18:30 - 12:40PHL-LCY
14h 10m1 stop
£395Aer Lingus
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Tue, 11 Mar
21:00 - 20:00PHL-LGW
18h 00m1 stop
£430Iberia
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Thu, 24 Apr
08:15 - 05:55PHL-LHR
16h 40m1 stop
08:25 - 19:07LHR-PHL
15h 42m1 stop
£679JetBlue
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Sat, 4 Jan - Sun, 12 Jan
07:10 - 18:30PHL-LHR
30h 20m2 stops
17:00 - 21:23LHR-PHL
33h 23m2 stops
£782Scandinavian Airlines
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Thu, 2 Jan - Sat, 11 Jan
17:30 - 09:05PHL-LHR
10h 35m1 stop
07:50 - 16:40LHR-PHL
13h 50m1 stop
£1,544Aer Lingus
Find Deal
Fri, 3 Jan - Sat, 18 Jan
18:35 - 11:40PHL-LHR
12h 05m1 stop
13:30 - 16:25LHR-PHL
7h 55mdirect
£1,574British Airways
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Sat, 4 Jan - Sat, 12 Jul
21:15 - 09:20PHL-LHR
7h 05mdirect
12:55 - 16:55LHR-PHL
33h 00m1 stop
£1,585British Airways
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Fri, 3 Jan - Sun, 5 Jan
17:30 - 11:25PHL-LHR
12h 55m1 stop
08:50 - 19:07LHR-PHL
15h 17m2 stops
£1,595Aer Lingus
Find Deal
Fri, 3 Jan - Fri, 10 Jan
21:15 - 09:20PHL-LHR
7h 05mdirect
08:50 - 16:40LHR-PHL
12h 50m1 stop
£1,891American Airlines
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Fri, 3 Jan - Fri, 10 Jan
16:17 - 07:50PHL-LHR
10h 33m1 stop
07:25 - 15:35LHR-PHL
13h 10m1 stop
£2,093American Airlines
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Thu, 2 Jan - Sat, 4 Jan
18:40 - 06:35PHL-LHR
6h 55mdirect
10:15 - 13:20LHR-PHL
8h 05mdirect
£2,396Iberia
Find Deal
Thu, 2 Jan - Sat, 4 Jan
21:15 - 09:20PHL-LHR
7h 05mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£2,879Iberia
Find Deal
Fri, 3 Jan - Sun, 5 Jan
19:40 - 06:35PHL-LHR
6h 55mdirect
10:15 - 14:10LHR-PHL
7h 55mdirect
£571Iberia
Find Deal
Tue, 11 Mar - Thu, 27 Mar
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£572Iberia
Find Deal
Wed, 26 Feb - Wed, 5 Mar
18:30 - 06:40PHL-LHR
7h 10mdirect
10:05 - 12:50LHR-PHL
7h 45mdirect
£574Iberia
Find Deal
Tue, 22 Apr - Wed, 30 Apr
18:40 - 06:35PHL-LHR
6h 55mdirect
10:15 - 13:20LHR-PHL
8h 05mdirect
£587Finnair
Find Deal
Tue, 11 Feb - Thu, 20 Feb
18:40 - 06:35PHL-LHR
6h 55mdirect
10:15 - 13:30LHR-PHL
8h 15mdirect
£588Finnair
Find Deal
Sun, 26 Jan - Tue, 4 Feb
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£614British Airways
Find Deal
Tue, 18 Feb - Tue, 25 Feb
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£616British Airways
Find Deal
Mon, 3 Feb - Mon, 10 Feb
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£675American Airlines
Find Deal
Sat, 8 Feb - Mon, 17 Feb
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£770Aer Lingus
Find Deal
Mon, 20 Jan - Tue, 28 Jan
18:30 - 06:40PHL-LHR
7h 10mdirect
10:05 - 12:50LHR-PHL
7h 45mdirect
£797American Airlines
Find Deal
Fri, 18 Apr - Thu, 24 Apr

American Airlines flights from Philadelphia to London

Our best American Airlines deals on Philadelphia to London flight tickets
American Airlines
2 Feb
PHL19:10Philadelphia
9h 20m
1 stop
LHR09:30London Heathrow
4 Feb
LHR08:10London Heathrow
12h 25m
1 stop
PHL15:35Philadelphia
American Airlines
2 Mar
PHL21:21Philadelphia
11h 04m
1 stop
LHR13:25London Heathrow
12 Mar
LHR07:50London Heathrow
13h 35m
1 stop
PHL17:25Philadelphia
American Airlines
20 Jan
PHL21:21Philadelphia
6h 59m
LHR09:20London Heathrow
28 Jan
LHR08:15London Heathrow
13h 05m
1 stop
PHL16:20Philadelphia

Delta flights from Philadelphia to London

Our best Delta deals on Philadelphia to London flight tickets
Delta
13 Jan
PHL13:11Philadelphia
13h 44m
1 stop
LHR07:55London Heathrow
29 Jan
LHR06:30London Heathrow
14h 53m
2 stops
PHL16:23Philadelphia
Delta
13 Jan
PHL13:00Philadelphia
13h 55m
2 stops
LHR07:55London Heathrow
20 Jan
LHR08:40London Heathrow
16h 59m
2 stops
PHL20:39Philadelphia
Delta
15 Apr
PHL17:00Philadelphia
11h 25m
1 stop
LHR09:25London Heathrow
22 Apr
LHR06:15London Heathrow
19h 58m
2 stops
PHL21:13Philadelphia

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 £551, 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 £560.

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

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £569. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to London for around £668.

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 £530. Flights at midday are often more expensive, with an average ticket price of £786.

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?

In general, most travellers find the cheapest time to book a flight to London is about 56 days prior to their departure date, when tickets on average are £690. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Philadelphia for as low as £429 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.

Can stopping save me money on Philadelphia to London flights?

You could potentially save up to 56% on your flight if you consider stops on a Philadelphia to London flight.

How have Philadelphia to London flight prices changed over time?

As of December 2024, prices for Philadelphia to London flights are approximately 22% 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 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

£158

Fastest flight time

6h 55m

Direct flights

Every day

Airports in London

5 airports
The best one-way flight to London from Philadelphia in the past 72 hours is £158. The best return flight deal from Philadelphia to London found on momondo in the last 72 hours is £405.
The fastest flight from Philadelphia to London takes 6h 55m
Direct flights go from Philadelphia to London every day.
There are 5 airports near London: London City (LCY), 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 £464Free CancellationRating
7.0
2,636 reviews
Search Iberia flights
British AirwaysPriceFrom £488Free CancellationRating
6.6
6,807 reviews
Search British Airways flights
JetBluePriceFrom £501Free CancellationRating
7.4
3,227 reviews
Search JetBlue flights
Aer LingusPriceFrom £526Free CancellationRating
7.1
1,071 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 7 flights on this route every week with an average price of £873. 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 £769, however, with flight time and availability significantly affecting the price. Iberia (7.0/10 from 2,636 user reviews) flies into London from Philadelphia 14 times in an average week so prices can vary.


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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