To Philadelphia

Cheap Flights from London to Philadelphia

Browse current best options from London. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

London

RatePunk searches hundreds of travel sites at once for deals on flights to Philadelphia

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from London to Philadelphia

Explore current cheapest deals departing from London to Philadelphia

Round trip

Sort by: Cheapest

October 7 - October 12

Cheapest

Best

LGW - Philadelphia

$674

$569

Round trip

October 4 - October 12

LGW - Philadelphia

$647

$602

Round trip

October 7 - October 19

LGW - Philadelphia

$646

$604

Round trip

September 5 - September 27

LTN - Philadelphia

$649

$616

Round trip

September 14 - September 30

LGW - Philadelphia

$594

$617

Round trip

July 13 - July 27

Earliest

LTN - Philadelphia

$682

$627

Round trip

October 5 - October 19

LGW - Philadelphia

$641

$628

Round trip

October 12 - October 20

LGW - Philadelphia

$659

$628

Round trip

October 5 - October 12

LGW - Philadelphia

$663

$646

Round trip

September 1 - September 28

LGW - Philadelphia

$575

$647

Round trip

Unlock all 500+ flight deals to Philadelphia and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from London to Philadelphia

Right now, only 1% of recent fares from London to Philadelphia are classified as a good price. For cheap flights from London to Philadelphia, fares typically range from $702–$1148, with a median of $997. Current fares are near the typical level for this route. New deals appear almost daily, suggesting frequent opportunities to find better prices.

When is the cheapest time to fly from London to Philadelphia? The data indicates that September is the cheapest month to fly, with a median fare of $620. This is followed by October, where the median fare is $654, and January, with a median fare of $663. These months offer significantly lower prices compared to the overall median.

A typical journey from London to Philadelphia takes about 15h 10m, including connections. This duration reflects that most itineraries connect at least once. Only 16.3% of recent fares are for direct flights from London to Philadelphia; for the remaining itineraries, the typical number of connections is one.

The route from London to Philadelphia covers a distance of 5690 kilometers. This classifies it as a long-haul journey, indicating a significant travel distance between the two cities.

How much is a round trip from London to Philadelphia

Regular price: $593 - $1,104

Prices for flights from London to Philadelphia are currently below the regular range.

The regular price range for flights from London to Philadelphia is between $593 and $1104. The current lowest deal is $569 with Norse Atlantic UK, for travel from Oct 7-Oct 12.

now $569

Low $593

High $1,104

The cheapest time to fly from London to Philadelphia

The cheapest month to fly from London to Philadelphia is September, with a median price of $620. The most expensive month is March, with a median price of $1805. Prices are generally lower from January to December.

September

Cheapest

Flights from $620

March

Most Expensive

Flights from $1,805

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from London to Philadelphia

Finnair

Last-minute flights going from London to Philadelphia

Thu, Jul 2

⌛ Last-Minute

STN - Philadelphia

London (STN) - Philadelphia (PHL)

Ryanair

$814

$691

One-way

Sun, Jul 5

⌛ Last-Minute

STN - Philadelphia

London (STN) - Philadelphia (PHL)

Jet2.com

$797

$660

One-way

Sun, Jul 5

⌛ Last-Minute

STN - Philadelphia

London (STN) - Philadelphia (PHL)

Jet2.com

$799

$687

One-way

Mon, Jul 6

⌛ Last-Minute

LTN - Philadelphia

London (LTN) - Philadelphia (PHL)

Aero Services Executive

$717

$655

One-way

Mon, Jul 13

⌛ Last-Minute

LTN - Philadelphia

London (LTN) - Philadelphia (PHL)

Aero Services Executive

$682

$627

One-way

Sun, Aug 2

⌛ Last-Minute

STN - Philadelphia

London (STN) - Philadelphia (PHL)

Ryanair

$855

$689

One-way

Biggest price drops on these dates for flights from London to Philadelphia

13 nights

Dec 2 - Dec 15

$946 → $729

23%

14 nights

Dec 2 - Dec 16

$946 → $729

23%

15 nights

Dec 2 - Dec 17

$943 → $727

23%

13 nights

Dec 1 - Dec 14

$943 → $730

23%

Popular Airports to fly from London to Philadelphia

London - Philadelphia route insights

💸 Price insights

Recent fares are near the typical level.

Recent fares from London to Philadelphia are near the typical level of $997.

📅 Best time to fly

Fly in September for the best prices.

Historically, September is the cheapest month to fly, with a median price of $620.

⏱️ Flight duration

Expect a median flight time of 15h 10m.

The median flight time for this long-haul route is 15h 10m, typically with one stopover.

✈️ Airlines & availability

Connecting flights are dominant on this route.

Only 16.3% of deals are direct. Most deals include one or more stopovers.

🏆 Airline highlight

Norse Atlantic UK offers the lowest recent fare.

Norse Atlantic UK recently offered a flight for $569 from London Gatwick to Philadelphia International.

🎯 Booking tip

Deals appear frequently for this route.

Historically, deals for flights from London to Philadelphia appear frequently, about 0.5 times per day.

London main airports to depart from

Gatwick (LGW)

Cheapest

Gatwick Airport is a good choice for flights from London to Philadelphia, offering competitive prices.

📍 ~40 km from city center (reachable by car or train)

💸 Flights from ~$569

Heathrow (LHR)

Heathrow Airport is a major hub for flights from London to Philadelphia, providing many options.

📍 ~25 km from city center (reachable by car or train)

💸 Flights from ~$665

London City (LCY)

London City Airport is convenient for travelers departing from central London to Philadelphia.

📍 ~10 km from city center (reachable by car or train)

💸 Flights from ~$743

London Southend (SEN)

London Southend Airport offers an alternative departure point for flights to Philadelphia.

📍 ~60 km from city center (reachable by car or train)

💸 Flights from ~$807

London Stansted (STN)

London Stansted Airport is another option for flights from London to Philadelphia.

📍 ~50 km from city center (reachable by car or train)

💸 Flights from ~$636

Luton (LTN)

Luton Airport provides flights from London to Philadelphia, suitable for various travel plans.

📍 ~45 km from city center (reachable by car or train)

💸 Flights from ~$620

Philadelphia main airports to arrive at

Philadelphia International (PHL)

Cheapest

Philadelphia International Airport is a primary gateway to Philadelphia and the surrounding region.

📍 ~11 km from Philadelphia city center (reachable by car)

💸 Flights from ~$569

Airports nearby Philadelphia used as alternative

Newark Liberty International (EWR)

Cheapest

Consider Newark Liberty International for significantly more flight options, especially for long-haul international routes.

📍 ~135 km from Philadelphia (reachable by Amtrak and NJ Transit).

💸 Flights from ~$442

Baltimore–Washington International (BWI)

Baltimore–Washington International is a major base for Southwest Airlines with extensive domestic coverage.

📍 ~145 km from Philadelphia (reachable by Amtrak).

💸 Flights from ~$547

Trenton–Mercer (TTN)

Trenton–Mercer offers very fast check-in and security processing due to its small terminal size.

📍 ~55 km from Philadelphia (reachable by car).

💸 Flights from ~$594

Lehigh Valley International (ABE)

Lehigh Valley International provides an easy drive from Philadelphia's northern suburbs with reliable regional connections.

📍 ~85 km from Philadelphia (reachable by car).

💸 Flights from ~$803

Atlantic City International (ACY)

Atlantic City International is convenient for travelers on the eastern side of the Philadelphia metro.

📍 ~90 km from Philadelphia (reachable by car).

💸 Flights from ~$620

Business & First Class Flight Deals to Philadelphia

77% AI deal score

$2,011

From LHR

Elite

Nov 04

Philadelphia, United States

76% AI deal score

$1,771

$1,757

Save $14

From LHR

Elite

Nov 03

Philadelphia, United States

76% AI deal score

$1,771

$1,757

Save $14

From LHR

Philadelphia, United States

76% AI deal score

$1,758

From LHR

Elite

Nov 10

Philadelphia, United States

76% AI deal score

Philadelphia, United States

66% AI deal score

$9,349

From LHR

Elite

Jun 24

Philadelphia, United States

66% AI deal score

$9,405

Frequently Asked Questions About Flights to Philadelphia

Historically, the lowest average prices for flights from London to Philadelphia are found when booking between 28 and 59 days in advance, with an average price of $944. Booking within 0-6 days of departure typically sees prices rise to an average of $1069. Even booking 60+ days out tends to be slightly more expensive, averaging $969. This trend is based on pricing data observed across a 90-day window.

Based on pricing data from the trailing 90 days, a good price for a flight from London to Philadelphia is considered to be $702 or less. The median price for this route has been $997. Prices can go higher, with 75% of observed prices being $1148 or less. Travelers aiming for a good deal should target prices at or below the $702 mark.

Historically, September, October, and January have offered the cheapest flights from London to Philadelphia. September typically has a median price of $620, while October follows closely with a median of $654. January also presents a good value, with a median price of $663. These prices are significantly lower than the annual median price of $997 for this route.

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Cheap Flights from London to Philadelphia

Today’s best flight deals from London to Philadelphia

Unlock all 500+ flight deals to Philadelphia and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from London to Philadelphia

How much is a round trip from London to Philadelphia

The cheapest time to fly from London to Philadelphia

Direct flights from London to Philadelphia

Last-minute flights going from London to Philadelphia

Biggest price drops on these dates for flights from London to Philadelphia

Popular Airports to fly from London to Philadelphia

London - Philadelphia route insights

Recent fares are near the typical level.

Fly in September for the best prices.

Expect a median flight time of 15h 10m.

Connecting flights are dominant on this route.

Norse Atlantic UK offers the lowest recent fare.

Deals appear frequently for this route.

London main airports to depart from

Philadelphia main airports to arrive at

Airports nearby Philadelphia used as alternative

Business & First Class Flight Deals to Philadelphia

Best Elite deals to Philadelphia

Nov 12

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Oct 24

Sep 12

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Frequently Asked Questions About Flights to Philadelphia

How early should I book London to Philadelphia flights to get the cheapest price?

How early should I book London to Philadelphia flights to get the cheapest price?

What is a good price for a flight from London to Philadelphia?

What is a good price for a flight from London to Philadelphia?

Which months have the cheapest flights from London to Philadelphia?

Which months have the cheapest flights from London to Philadelphia?