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Cheap flights from London Luton Airport to Philadelphia from £349

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 23/9. 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
1 adult, Economy, 0 bags

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
05:40 - 22:46LTN  London Luton-PHL Philadelphia
22h 06m3 stops Barcelona-El Prat Frankfurt am Main Toronto Pearson Intl
Multiple Airlines Logo
16:20 - 18:05PHL  Philadelphia-LTN London Luton
20h 45m2 stops Toronto Pearson Intl Barcelona-El Prat
£610Multiple Airlines
Fri, 18 Sep - Fri, 25 Sep
Multiple Airlines Logo
09:40 - 18:55LTN  London Luton-PHL Philadelphia
14h 15m1 stop Dublin
Multiple Airlines Logo
09:12 - 09:15PHL  Philadelphia-LTN London Luton
19h 03m2 stops Boston Logan Intl Dublin
£616Multiple Airlines
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
06:20 - 17:48LTN  London Luton-PHL Philadelphia
16h 28m2 stops Dublin Boston Logan Intl
Multiple Airlines Logo
20:25 - 17:25PHL  Philadelphia-LTN London Luton
16h 00m1 stop Dublin
£621Multiple Airlines
Fri, 18 Sep - Fri, 25 Sep
Multiple Airlines Logo
05:40 - 22:46LTN  London Luton-PHL Philadelphia
22h 06m3 stops Barcelona-El Prat Frankfurt am Main Toronto Pearson Intl
Multiple Airlines Logo
16:20 - 18:05PHL  Philadelphia-LTN London Luton
20h 45m2 stops Toronto Pearson Intl Barcelona-El Prat
£630Multiple Airlines
Fri, 18 Sep - Fri, 25 Sep
Multiple Airlines Logo
05:40 - 21:32LTN  London Luton-PHL Philadelphia
20h 52m3 stops Barcelona-El Prat Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
15:25 - 14:20PHL  Philadelphia-LTN London Luton
17h 55m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat
£639Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
18:15 - 14:49LTN  London Luton-PHL Philadelphia
25h 34m3 stops Barcelona-El Prat Frankfurt am Main Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
16:20 - 18:15PHL  Philadelphia-LTN London Luton
20h 55m2 stops Toronto Pearson Intl Barcelona-El Prat
£643Multiple Airlines
Sun, 30 Aug - Sun, 6 Sep
Multiple Airlines Logo
09:40 - 18:55LTN  London Luton-PHL Philadelphia
14h 15m1 stop Dublin
Multiple Airlines Logo
20:25 - 13:25PHL  Philadelphia-LTN London Luton
12h 00m1 stop Dublin
£650Multiple Airlines
Tue, 29 Sep - Tue, 6 Oct
Multiple Airlines Logo
06:15 - 18:55LTN  London Luton-PHL Philadelphia
17h 40m1 stop Dublin
Multiple Airlines Logo
20:25 - 13:25PHL  Philadelphia-LTN London Luton
12h 00m1 stop Dublin
£651Multiple Airlines
Wed, 30 Sep - Tue, 6 Oct
Multiple Airlines Logo
06:20 - 18:55LTN  London Luton-PHL Philadelphia
17h 35m1 stop Dublin
Multiple Airlines Logo
20:25 - 12:45PHL  Philadelphia-LTN London Luton
11h 20m1 stop Dublin
£653Multiple Airlines
Fri, 4 Sep - Mon, 14 Sep
Multiple Airlines Logo
06:20 - 18:55LTN  London Luton-PHL Philadelphia
17h 35m1 stop Dublin
Multiple Airlines Logo
20:25 - 17:25PHL  Philadelphia-LTN London Luton
16h 00m1 stop Dublin
£653Multiple Airlines
Fri, 4 Sep - Fri, 11 Sep

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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 9 August 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 London Luton - PHL Philadelphia

LTNPHL

London Luton

Fri 18/9

05:40-22:46

3 stops22h 06m

Philadelphia

Fri 25/9

16:20-18:05

2 stops20h 45m

£610

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Tue 1/9

09:40-18:55

1 stop14h 15m

Philadelphia

Tue 8/9

09:12-09:15

2 stops19h 03m

£616

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Fri 18/9

06:20-17:48

2 stops16h 28m

Philadelphia

Fri 25/9

20:25-17:25

1 stop16h 00m

£621

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Fri 18/9

05:40-22:46

3 stops22h 06m

Philadelphia

Fri 25/9

16:20-18:05

2 stops20h 45m

£630

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Mon 21/9

05:40-21:32

3 stops20h 52m

Philadelphia

Mon 28/9

15:25-14:20

2 stops17h 55m

£639

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Sun 30/8

18:15-14:49

3 stops25h 34m

Philadelphia

Sun 6/9

16:20-18:15

2 stops20h 55m

£643
Fastest return journey

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Tue 29/9

09:40-18:55

1 stop14h 15m

Philadelphia

Tue 6/10

20:25-13:25

1 stop12h 00m

£650

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Wed 30/9

06:15-18:55

1 stop17h 40m

Philadelphia

Tue 6/10

20:25-13:25

1 stop12h 00m

£651

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Fri 4/9

06:20-18:55

1 stop17h 35m

Philadelphia

Mon 14/9

20:25-12:45

1 stop11h 20m

£653

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Fri 4/9

06:20-18:55

1 stop17h 35m

Philadelphia

Fri 11/9

20:25-17:25

1 stop16h 00m

£653

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 £625. 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 £691.

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 £660. At midday is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £664 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.
Search flight deals

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
Bridgeport
Vineland
Newark
Reading
Rehoboth Beach
Dover
Essington
Ephrata
Cherry Hill
Dewey Beach
Wildwood
West Chester

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.

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