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Cheap flights from London to Delaware from £408

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ILG
27 Aug — 3 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Delaware

Enter your travel dates to find the best prices.

Cheapest flights from London to Delaware
Explore the most affordable flight options available from London to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 July 2026.

Mon 26/1013:10
LHR
-
PHL
Nonstop8h 05m
American Airlines
Tue 17/1113:40
PHL
-
LHR
1 stop11h 35m
American Airlines
Deal found 28/7£610
Fri 4/909:30
LHR
-
PHL
1 stop11h 35m
United Airlines
Tue 8/910:50
PHL
-
LHR
2 stops29h 10m
United Airlines
Deal found 28/7£611
Thu 29/1006:40
LHR
-
PHL
2 stops19h 27m
Scandinavian Airlines
Mon 2/1111:00
PHL
-
LHR
2 stops26h 30m
Scandinavian Airlines
Deal found 28/7£612
Fri 11/912:00
LHR
-
PHL
1 stop11h 55m
Aer Lingus
Fri 18/920:25
PHL
-
LHR
1 stop9h 50m
Aer Lingus
Deal found 28/7£612
Wed 18/1109:00
LHR
-
PHL
2 stops18h 56m
Air Canada
Tue 1/1215:20
PHL
-
LHR
2 stops15h 00m
Air Canada
Deal found 28/7£613
Thu 10/907:25
LHR
-
PHL
2 stops17h 06m
United Airlines
Sun 13/910:50
PHL
-
LHR
2 stops29h 10m
United Airlines
Deal found 28/7£614
Sun 20/907:30
LHR
-
PHL
2 stops18h 57m
United Airlines
Mon 28/916:20
PHL
-
LHR
2 stops47h 40m
United Airlines
Deal found 28/7£615
Wed 28/1013:00
LHR
-
PHL
2 stops13h 56m
Air Canada
Tue 3/1109:15
PHL
-
LHR
2 stops16h 55m
Air Canada
Deal found 28/7£615
Wed 16/907:05
LHR
-
PHL
3 stops20h 16m
Scandinavian Airlines
Wed 30/913:24
PHL
-
LHR
3 stops20h 11m
Scandinavian Airlines
Deal found 28/7£618
Wed 2/909:15
LHR
-
PHL
Nonstop8h 00m
British Airways
Tue 8/918:45
PHL
-
LHR
Nonstop7h 05m
British Airways
Deal found 28/7£619
Fri 11/908:40
LHR
-
PHL
1 stop11h 22m
JetBlue
Fri 18/910:42
PHL
-
LHR
1 stop14h 48m
JetBlue
Deal found 28/7£620
Fri 11/909:30
LHR
-
PHL
2 stops18h 16m
Air Canada
Fri 18/910:05
PHL
-
LHR
1 stop18h 55m
Air Canada
Deal found 28/7£621

Find flight deals from London to Delaware

Keep the following information in mind while searching for London to Delaware flight deals. Data was last updated 28 July 2026.

Round-trip from

£622

One-way from

£408

Popular in

July

Cheapest in

September

Average price

£794
19/11-30/11
  • 19/11-30/11
  • 2 total stops
  • 26h 15m total
  • London to Delaware
Search Deals
28/8
  • 28/8
  • 2 total stops
  • 50h 29m total
  • London to Delaware
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Delaware 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 28 July 2026.
Use the filters below to find and compare flights from London to Delaware that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 19/11

06:25-17:40

1 stop16h 15m

Philadelphia

Mon 30/11

17:30-08:30

1 stop10h 00m

£622

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/11

07:05-00:55

3 stops22h 50m

Philadelphia

Wed 18/11

15:33-16:00

2 stops19h 27m

£622

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 5/10

09:30-16:05

1 stop11h 35m

Philadelphia

Mon 12/10

15:08-06:55

1 stop10h 47m

£625

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Tue 25/8

12:45-16:05

2 stops32h 20m

Philadelphia

Tue 1/9

15:25-11:05

2 stops14h 40m

£640

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Mon 7/9

12:25-18:55

1 stop11h 30m

Philadelphia

Mon 14/9

20:25-12:45

1 stop11h 20m

£646

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/11

10:35-13:50

Nonstop8h 15m

Philadelphia

Wed 18/11

18:35-06:35

Nonstop7h 00m

£650

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Sun 6/9

08:30-18:55

1 stop15h 25m

Philadelphia

Sun 13/9

20:25-19:30

1 stop18h 05m

£655

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 6/9

09:15-12:15

Nonstop8h 00m

Philadelphia

Sun 13/9

13:51-06:20

1 stop11h 29m

£660

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Thu 27/8

05:40-21:34

2 stops20h 54m

Philadelphia

Thu 3/9

17:40-23:00

2 stops24h 20m

£662

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Thu 29/10

10:40-09:39

2 stops26h 59m

Philadelphia

Sun 1/11

18:30-20:35

2 stops21h 05m

£669

Flights are sorted by cheapest return flights first.

Deals found on 28/7

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from London to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from London 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.

Cheapflights Insights

Everything you need to know about your flight from London to Delaware

No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • How long is the flight from London to Delaware?

    Scandinavian Airlines, United Airlines, and British Airways can get you from London to Delaware in just under 8h 15m. Your travel time can differ by up to 14h 35m. London and Delaware are separated by a distance of 3533 mi. This flight may include one or multiple stops.

  • What are the most popular routes from London to Delaware?

    The most popular route from London to Delaware is London Heathrow - Philadelphia. You may also consider London Gatwick - Philadelphia or London City - Philadelphia.

  • Can I find deals for flights from London to Delaware that include hotel bookings?

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

  • How can I find direct flights from London to Delaware?

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

  • Can I find deals for business class flights from London to Delaware?

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

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Stansted to John F Kennedy Intl flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Heathrow to Los Angeles flights
Heathrow to Orlando flights
Heathrow to Miami flights
Luton to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Luton to Newark flights
Stansted to Newark flights
London City to Newark flights
Heathrow to O'Hare Intl flights
Heathrow to Dulles Intl flights
Heathrow to Dallas/Fort Worth flights
Heathrow to San Francisco flights
Manchester to John F Kennedy Intl flights
Heathrow to Boston flights
Gatwick to Los Angeles flights
Stansted to Los Angeles flights
Heathrow to Baltimore flights
Gatwick to Orlando flights
Heathrow to Las Vegas flights
Manchester to Orlando flights
London City to Los Angeles flights
Gatwick to Miami flights
Stansted to Miami flights
Heathrow to Seattle flights
Stansted to Orlando flights
Heathrow to Hobby flights
London City to Miami flights
Luton to Los Angeles flights
Heathrow to Atlanta flights
Heathrow to Ontario flights
Heathrow to Tampa flights
London City to Orlando flights
Heathrow to George Bush Intcntl flights
Gatwick to Boston flights
Manchester to Newark flights
Luton to Miami flights
Gatwick to Dulles Intl flights
Gatwick to O'Hare Intl flights
Gatwick to San Francisco flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Heathrow to Midway flights
Stansted to Dulles Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Delaware?

Deals for London to Delaware flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Delaware?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Delaware for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Delaware with no change fees?

Certainly. Search results for flights to Delaware from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to Delaware become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Delaware from London today and book when prices fit your budget.

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