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Cheap flights from London Luton Airport to Philadelphia from £342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Luton Airport to Philadelphia departing on 12/10. 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
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Find the cheapest flights from London Luton Airport to Philadelphia

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:25 - 18:55
LTN
-
PHL
11h 30m
1 stop
Multiple Airlines Logo
08:28 - 09:15
PHL
-
LTN
19h 47m
2 stops
£639Multiple Airlines
Mon, 22 Jun - Tue, 7 Jul
Multiple Airlines Logo
09:40 - 18:55
LTN
-
PHL
14h 15m
1 stop
Multiple Airlines Logo
20:25 - 13:25
PHL
-
LTN
12h 00m
1 stop
£668Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
Multiple Airlines Logo
08:30 - 14:49
LTN
-
PHL
35h 19m
3 stops
Multiple Airlines Logo
17:40 - 19:15
PHL
-
LTN
20h 35m
2 stops
£676Multiple Airlines
Sun, 21 Jun - Sun, 28 Jun
Multiple Airlines Logo
08:15 - 18:55
LTN
-
PHL
15h 40m
1 stop
Multiple Airlines Logo
20:25 - 11:25
PHL
-
LTN
10h 00m
1 stop
£681Multiple Airlines
Mon, 14 Sep - Sun, 20 Sep
Multiple Airlines Logo
15:15 - 14:48
LTN
-
PHL
28h 33m
3 stops
Multiple Airlines Logo
17:40 - 19:15
PHL
-
LTN
20h 35m
2 stops
£688Multiple Airlines
Sun, 14 Jun - Wed, 24 Jun
Multiple Airlines Logo
09:40 - 18:55
LTN
-
PHL
14h 15m
1 stop
Multiple Airlines Logo
20:25 - 15:30
PHL
-
LTN
14h 05m
1 stop
£693Multiple Airlines
Tue, 23 Jun - Tue, 7 Jul
Multiple Airlines Logo
11:40 - 16:05
LTN
-
PHL
33h 25m
3 stops
Multiple Airlines Logo
15:25 - 00:30
PHL
-
LTN
28h 05m
3 stops
£696Multiple Airlines
Thu, 4 Jun - Mon, 8 Jun
Multiple Airlines Logo
12:45 - 16:05
LTN
-
PHL
32h 20m
2 stops
Multiple Airlines Logo
15:25 - 11:00
PHL
-
LTN
14h 35m
2 stops
£696Multiple Airlines
Thu, 4 Jun - Mon, 8 Jun
Multiple Airlines Logo
18:05 - 21:34
LTN
-
PHL
32h 29m
3 stops
Multiple Airlines Logo
15:25 - 23:55
PHL
-
LTN
27h 30m
3 stops
£702Multiple Airlines
Mon, 6 Jul - Mon, 13 Jul
Multiple Airlines Logo
06:20 - 21:33
LTN
-
PHL
20h 13m
2 stops
Multiple Airlines Logo
10:05 - 13:45
PHL
-
LTN
22h 40m
2 stops
£715Multiple Airlines
Sat, 6 Jun - Wed, 10 Jun

momondo Fare Finder

 
Customise your flight search to find flights from London Luton Airport to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 25 May 2026.
Use the filters below to find and compare flights from London Luton Airport to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Mon 22/6

12:25-18:55

1 stop11h 30m

Philadelphia

Tue 7/7

08:28-09:15

2 stops19h 47m

£639

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Tue 15/9

09:40-18:55

1 stop14h 15m

Philadelphia

Tue 22/9

20:25-13:25

1 stop12h 00m

£668

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Sun 21/6

08:30-14:49

3 stops35h 19m

Philadelphia

Sun 28/6

17:40-19:15

2 stops20h 35m

£676
Fastest return journey

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Mon 14/9

08:15-18:55

1 stop15h 40m

Philadelphia

Sun 20/9

20:25-11:25

1 stop10h 00m

£681

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Sun 14/6

15:15-14:48

3 stops28h 33m

Philadelphia

Wed 24/6

17:40-19:15

2 stops20h 35m

£688

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Tue 23/6

09:40-18:55

1 stop14h 15m

Philadelphia

Tue 7/7

20:25-15:30

1 stop14h 05m

£693

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Thu 4/6

11:40-16:05

3 stops33h 25m

Philadelphia

Mon 8/6

15:25-00:30

3 stops28h 05m

£696

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Thu 4/6

12:45-16:05

2 stops32h 20m

Philadelphia

Mon 8/6

15:25-11:00

2 stops14h 35m

£696

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Mon 6/7

18:05-21:34

3 stops32h 29m

Philadelphia

Mon 13/7

15:25-23:55

3 stops27h 30m

£702

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Sat 6/6

06:20-21:33

2 stops20h 13m

Philadelphia

Wed 10/6

10:05-13:45

2 stops22h 40m

£715

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Philadelphia from

How to get the cheapest flight ticket from London Luton Airport to Philadelphia

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 cheapest day to depart on your flight to Philadelphia?

Our data shows that Tuesday is the least expensive day to fly to Philadelphia. Tickets to fly out on this day can be as low as £599. On the other hand, Sunday is the most expensive day to depart from London Luton Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £671.

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

The cheapest time of day to fly to Philadelphia is in the morning when flights can be purchased for as low as £629. At midday is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £637 per ticket.

When to book flights from London Luton Airport to Philadelphia

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

Cheap London Luton Airport to Philadelphia (LTN to PHL) flight deals and tips

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

Fastest flight time

14h 15m

Direct flights

None
The fastest flight from London Luton Airport to Philadelphia takes 14h 15m
There are no direct flights from London Luton Airport to Philadelphia. There are no popular flight routes from London Luton Airport to Philadelphia.
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Frequently asked questions about flying from London Luton Airport to Philadelphia

  • How far is London Luton to Philadelphia by plane?

    London Luton and Philadelphia are 3521.0 mi apart from one another. 14h 15m is a normal flight duration for this route.

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

    Prices for flights from London Luton Airport to Philadelphia Airport are updated daily.

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

    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 London Luton Airport to Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The required travel and health documents for your Philadelphia Airport 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 Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Newark
Vineland
King of Prussia
Dover
Reading
Rehoboth Beach
Essington
Ephrata
West Chester
Cherry Hill
Dewey Beach

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Philadelphia for you.

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

momondo does allow users to show only those flights to Philadelphia from London which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for London to Philadelphia 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 London to Philadelphia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Philadelphia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Philadelphia trip

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