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Cheap flights from London Luton Airport to Philadelphia from £437

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/8. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — PHL
22 Aug — 29 Aug1
1 adult

Cheap flight deals from Luton to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Luton (LTN) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 August 2025.

Round-trip from

£519

One-way from

£437

Popular in

August

Cheapest in

February

Average price

£674
25/9-6/10
  • 25/9-6/10
  • 3 total stops
  • 32h 55m total
  • London to Philadelphia
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22/8
  • 22/8
  • 2 total stops
  • 38h 19m total
  • London to Philadelphia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£30 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Luton to Philadelphia

Cheapest flights from Luton to Philadelphia
Explore the most affordable flight options available from Luton to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 August 2025.

Thu 25/908:45LTN - PHL
1 stop15h 15mMultiple Airlines
Mon 6/1010:20PHL - LTN
2 stops17h 40mMultiple Airlines
Deal found 16/8£519
Thu 18/908:45LTN - PHL
1 stop15h 15mMultiple Airlines
Sun 21/918:10PHL - LTN
2 stops20h 15mMultiple Airlines
Deal found 16/8£521
Mon 15/909:00LTN - PHL
1 stop15h 00mMultiple Airlines
Mon 22/920:30PHL - LTN
1 stop14h 30mMultiple Airlines
Deal found 16/8£527
Fri 12/911:30LTN - PHL
1 stop12h 30mMultiple Airlines
Fri 19/910:20PHL - LTN
2 stops22h 15mMultiple Airlines
Deal found 16/8£538
Thu 18/912:35LTN - PHL
1 stop11h 25mMultiple Airlines
Mon 22/910:20PHL - LTN
2 stops17h 40mMultiple Airlines
Deal found 15/8£567
Thu 13/1109:00LTN - PHL
1 stop12h 00mMultiple Airlines
Thu 20/1117:30PHL - LTN
1 stop10h 15mMultiple Airlines
Deal found 16/8£573
Thu 18/911:10LTN - PHL
3 stops38h 45mMultiple Airlines
Tue 23/920:30PHL - LTN
1 stop11h 05mMultiple Airlines
Deal found 15/8£814
Thu 20/1109:00LTN - PHL
1 stop12h 00mMultiple Airlines
Mon 1/1217:30PHL - LTN
1 stop10h 05mMultiple Airlines
Deal found 15/8£825
Wed 17/913:00LTN - PHL
1 stop11h 00mMultiple Airlines
Sat 20/920:30PHL - LTN
1 stop12h 15mMultiple Airlines
Deal found 15/8£858

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luton 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, Cheapflights users made 858,174 searches. Data last updated 17 August 2025.
Use the filters below to find and compare flights from London Luton Airport to Philadelphia that are best for you.

Fly from

Luton

Fly to

Philadelphia

Route

Depart

Return

Price

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Wed 3/9

20:05-16:00

2 stops24h 55m

Philadelphia

Wed 17/9

17:35-19:25

3 stops20h 50m

£515

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Thu 25/9

08:45-19:00

1 stop15h 15m

Philadelphia

Mon 6/10

10:20-09:00

2 stops17h 40m

£519

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Thu 18/9

08:45-19:00

1 stop15h 15m

Philadelphia

Sun 21/9

18:10-19:25

2 stops20h 15m

£521

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Wed 3/9

10:00-19:00

1 stop14h 00m

Philadelphia

Mon 8/9

07:00-16:00

2 stops28h 00m

£523

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Mon 15/9

09:00-19:00

1 stop15h 00m

Philadelphia

Mon 22/9

20:30-16:00

1 stop14h 30m

£527

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Fri 12/9

11:30-19:00

1 stop12h 30m

Philadelphia

Fri 19/9

10:20-13:35

2 stops22h 15m

£538

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Fri 22/8

16:20-01:39

2 stops38h 19m

£437

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Sat 30/8

19:45-23:59

3 stops33h 14m

£455

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Sat 15/11

21:00-16:00

1 stop24h 00m

£468

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Fri 7/11

05:50-16:00

1 stop15h 10m

£472

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 16 results
1
2

Best time to book a flight from Luton to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Luton with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Luton to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from London Luton?

    Philadelphia (PHL) is the airport you will fly into if you book a flight from London Luton to Philadelphia. You should not have trouble finding flights to Philadelphia from London Luton; the airport handles an average of 0 inbound flights from London Luton per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Philadelphia airport from London Luton. It is only a 7.0 mi journey from Philadelphia (PHL) to Philadelphia’s city center.

  • Can I find deals for flights from Luton to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Luton to Philadelphia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Luton to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luton to Philadelphia.

  • Can I find deals for business class flights from Luton to Philadelphia?

    Yes. Cheapflights offers flight deals from Luton to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Luton Airport to Philadelphia?

    Currently, March is the cheapest month in which you can book a flight from London Luton Airport to Philadelphia (average of £648). Flying from London Luton Airport to Philadelphia in July is currently the most expensive (average of £839). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Luton to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Luton to Philadelphia?

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Can Cheapflights find flights from Luton to Philadelphia with no change fees?

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Can Cheapflights notify me if prices for flights from Luton to Philadelphia become cheaper?

Yes! Start tracking prices for Luton to Philadelphia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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