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Cheap flights from London to Delaware from £214

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ILG
28 Mar — 4 Apr1
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 26 February 2026.

Fri 10/406:20
LTN
-
PHL
1 stop17h 35m
Multiple Airlines
Fri 17/420:25
PHL
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 24/2£441
Fri 10/406:35
STN
-
PHL
1 stop17h 20m
Multiple Airlines
Fri 17/420:25
PHL
-
STN
1 stop16h 10m
Multiple Airlines
Deal found 24/2£446
Tue 21/408:40
LHR
-
PHL
1 stop27h 55m
JetBlue
Tue 28/406:00
PHL
-
LHR
1 stop19h 30m
JetBlue
Deal found 23/2£449
Wed 22/408:40
LHR
-
PHL
1 stop13h 58m
JetBlue
Tue 28/408:25
PHL
-
LHR
1 stop17h 05m
JetBlue
Deal found 26/2£450
Tue 3/309:20
LHR
-
PHL
1 stop18h 16m
JetBlue
Tue 10/315:02
PHL
-
LHR
1 stop11h 53m
JetBlue
Deal found 24/2£451
Mon 6/708:30
LHR
-
PHL
1 stop12h 11m
Air Canada
Thu 23/715:25
PHL
-
LHR
1 stop13h 35m
Air Canada
Deal found 22/2£452
Mon 11/508:40
LHR
-
PHL
1 stop27h 55m
JetBlue
Mon 18/506:00
PHL
-
LHR
1 stop19h 30m
JetBlue
Deal found 24/2£458
Fri 10/411:45
LGW
-
PHL
1 stop12h 10m
Multiple Airlines
Fri 17/420:25
PHL
-
LGW
1 stop15h 45m
Multiple Airlines
Deal found 24/2£459
Wed 11/309:20
LHR
-
PHL
1 stop17h 16m
JetBlue
Mon 23/320:20
PHL
-
LHR
1 stop30h 35m
JetBlue
Deal found 26/2£464
Mon 14/908:40
LHR
-
PHL
1 stop18h 10m
JetBlue
Mon 28/910:20
PHL
-
LHR
1 stop15h 10m
JetBlue
Deal found 25/2£466
Fri 5/613:45
LHR
-
PHL
Nonstop7h 55m
British Airways
Thu 2/718:45
PHL
-
LHR
Nonstop7h 05m
British Airways
Deal found 24/2£469
Sat 9/509:30
LHR
-
PHL
1 stop10h 18m
Air Canada
Sat 30/515:25
PHL
-
LHR
1 stop10h 05m
Air Canada
Deal found 25/2£471

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 26 February 2026.

Round-trip from

£441

One-way from

£214

Popular in

December

Cheapest in

September

Average price

£543
10/4-17/4
  • 10/4-17/4
  • 2 total stops
  • 30h 10m total
  • London to Delaware
Search Deals
22/4
  • 22/4
  • 3 total stops
  • 51h 29m total
  • London to Delaware
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 26 February 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

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 29/4

09:30-16:05

1 stop11h 35m

Philadelphia

Mon 11/5

16:20-21:00

2 stops47h 40m

£489

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 11/5

08:40-17:38

1 stop13h 58m

Philadelphia

Mon 18/5

08:25-06:30

1 stop17h 05m

£497

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 9/4

08:55-22:43

3 stops18h 48m

Philadelphia

Thu 16/4

17:40-22:35

2 stops23h 55m

£515

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 13/4

06:30-17:50

2 stops16h 20m

Philadelphia

Mon 20/4

18:31-09:15

1 stop9h 44m

£564

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 30/3

08:30-18:55

1 stop15h 25m

Philadelphia

Fri 3/4

20:25-17:35

1 stop16h 10m

£575

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 23/3

11:30-17:05

1 stop33h 35m

Philadelphia

Mon 30/3

19:45-10:40

1 stop9h 55m

£577

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 25/3

09:10-19:09

2 stops13h 59m

Philadelphia

Thu 2/4

10:33-06:45

2 stops15h 12m

£578

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 9/4

08:50-15:00

1 stop11h 10m

Philadelphia

Thu 16/4

19:25-07:50

Nonstop7h 25m

£585

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 23/3

19:25-16:20

1 stop24h 55m

Philadelphia

Mon 27/4

15:27-10:05

1 stop13h 38m

£588

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 23/3

16:20-17:14

2 stops28h 54m

Philadelphia

Mon 27/4

06:17-06:30

2 stops19h 13m

£591

Flights are sorted by cheapest return flights first.

Deals found on 24/2

Showing 1-10 of 60 resultsSorted by cheapest first
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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?

    United Airlines, JetBlue, and Delta can get you from London to Delaware in just under 11h 35m. Your travel time can differ by up to 4h 45m. London and Delaware are separated by a distance of 3533 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London to Delaware one-way?

    For one-way options, check prices for Wizz Air. According to our data, you can fly for as low as £42. Users have also found prices from £78 and £115 on Wizz Air and Royal Jordanian, respectively.

  • 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 City - Philadelphia or London Stansted - 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.
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Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to John F Kennedy Intl flights
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Heathrow to Orlando flights
Stansted to John F Kennedy Intl flights
Heathrow to Miami flights
Gatwick to LaGuardia flights
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Stansted to Newark flights
Luton to John F Kennedy Intl flights
Luton to Newark flights
Manchester to Orlando flights
London City to Newark flights
Heathrow to Las Vegas flights
Heathrow to O'Hare Intl flights
Manchester to John F Kennedy Intl flights
Heathrow to Dallas/Fort Worth flights
Heathrow to San Francisco flights
Heathrow to Dulles Intl flights
Gatwick to Orlando flights
Gatwick to Boston flights
Heathrow to Seattle flights
Heathrow to Atlanta flights
Gatwick to Los Angeles flights
Heathrow to Hobby flights
Gatwick to Miami flights
Heathrow to Baltimore flights
Stansted to Los Angeles flights
London City to Los Angeles flights
Edinburgh to John F Kennedy Intl flights
Heathrow to Tampa flights
Stansted to Miami flights
London City to Miami flights
Edinburgh to Newark flights
Stansted to Orlando flights
Heathrow to Nashville flights
Heathrow to George Bush Intcntl flights
Manchester to Newark flights
Stansted to Boston flights
London City to Boston flights
Luton to Los Angeles flights
London City to Orlando flights
Heathrow to Ontario flights
Manchester to LaGuardia flights
Gatwick to Dulles Intl flights
Heathrow to Detroit 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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