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Cheap flights from London to Delaware from £210

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ILG
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Delaware

Keep the following information in mind while searching for London to Delaware flight deals. Data was last updated 16 January 2026.

Round-trip from

£450

One-way from

£210

Popular in

December

Cheapest in

January

Average price

£480
United Airlines
  • United Airlines
  • 26/1-2/2
  • 2 total stops
  • 40h 27m total
  • London to Delaware
Search Deals
27/4
  • 27/4
  • 1 total stop
  • 31h 36m total
  • London to Delaware
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Find 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 16 January 2026.

Mon 26/113:25
LHR
-
PHL
1 stop30h 22m
United Airlines
Mon 2/219:45
PHL
-
LHR
1 stop10h 05m
United Airlines
Deal found 15/1£450
Sat 14/213:35
LHR
-
PHL
1 stop29h 44m
United Airlines
Sat 28/217:00
PHL
-
LHR
1 stop13h 15m
United Airlines
Deal found 15/1£451
Sat 7/207:30
LHR
-
PHL
1 stop13h 10m
British Airways
Thu 19/219:40
PHL
-
LHR
Nonstop7h 10m
British Airways
Deal found 15/1£454
Mon 26/110:15
LHR
-
PHL
Nonstop8h 15m
British Airways
Mon 2/219:50
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 14/1£455
Mon 26/110:00
LHR
-
PHL
2 stops18h 13m
Delta
Mon 23/212:29
PHL
-
LHR
2 stops16h 46m
Delta
Deal found 15/1£456
Thu 29/114:00
LGW
-
PHL
2 stops27h 32m
Multiple Airlines
Sun 1/222:45
PHL
-
LGW
1 stop30h 15m
Multiple Airlines
Deal found 15/1£456
Mon 26/106:30
LHR
-
PHL
2 stops15h 20m
Delta
Mon 2/212:29
PHL
-
LHR
2 stops14h 36m
Delta
Deal found 13/1£456
Thu 5/207:50
LHR
-
PHL
1 stop11h 15m
British Airways
Mon 9/218:35
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 12/1£457
Fri 13/211:10
LHR
-
PHL
1 stop33h 15m
United Airlines
Sat 14/220:02
PHL
-
LHR
2 stops30h 53m
United Airlines
Deal found 13/1£458
Mon 27/407:40
LHR
-
PHL
1 stop12h 15m
British Airways
Wed 8/715:20
PHL
-
LHR
1 stop13h 15m
British Airways
Deal found 14/1£459
Sun 1/313:00
LGW
-
PHL
2 stops41h 01m
Multiple Airlines
Sun 8/322:38
PHL
-
LGW
1 stop31h 22m
Multiple Airlines
Deal found 15/1£459
Fri 1/509:15
LCY
-
PHL
1 stop11h 45m
Lufthansa
Mon 11/517:35
PHL
-
LCY
1 stop19h 20m
Lufthansa
Deal found 15/1£459

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 16 January 2026.
Use the filters below to find and compare flights from London to Delaware that are best for you.

Fly from

London

Fly to

Delaware

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 27/1

06:30-16:50

2 stops15h 20m

Philadelphia

Sun 22/2

20:06-08:45

1 stop31h 39m

£456

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 28/1

06:30-16:50

2 stops15h 20m

Philadelphia

Mon 23/2

11:09-07:50

1 stop15h 41m

£456

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 26/1

11:45-23:13

2 stops16h 28m

Philadelphia

Mon 23/2

11:09-07:50

1 stop15h 41m

£456

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 26/1

11:45-23:13

2 stops16h 28m

Philadelphia

Thu 26/2

12:16-10:50

2 stops17h 34m

£456

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 26/1

11:45-23:13

2 stops16h 28m

Philadelphia

Wed 25/2

14:31-10:50

2 stops15h 19m

£456

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 26/1

08:25-15:40

1 stop12h 15m

Philadelphia

Mon 2/2

19:50-07:50

Nonstop7h 00m

£458

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 26/1

10:15-13:30

Nonstop8h 15m

Philadelphia

Mon 2/2

19:50-07:50

Nonstop7h 00m

£461

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Mon 16/2

06:50-13:55

1 stop12h 05m

Philadelphia

Mon 2/3

19:45-14:35

1 stop13h 50m

£463

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Tue 27/1

06:50-14:05

1 stop12h 15m

Philadelphia

Tue 24/2

20:50-12:40

1 stop10h 50m

£463

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 28/1

10:35-13:50

Nonstop8h 15m

Philadelphia

Mon 23/2

18:35-06:35

Nonstop7h 00m

£465

Flights are sorted by cheapest return flights first.

Deals found on 14/1

Showing 1-10 of 60 results
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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?

    Delta, British Airways, and Iberia can get you from London to Delaware in just under 12h 05m. Your travel time can differ by up to 12h 55m. London and Delaware are separated by a distance of 3553 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 £43. Users have also found prices from £50 and £116 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 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

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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 Hobby flights
Gatwick to Las Vegas flights
Heathrow to Nashville flights
London City to Las Vegas flights
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Luton to Miami flights
Heathrow to George Bush Intcntl flights
Stansted to Orlando flights
Gatwick to Dallas/Fort Worth 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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