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Cheap flights from London to Delaware from £344

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 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ILG
6 Jul — 13 Jul1
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 6 June 2026.

Mon 29/612:20
LGW
-
PHL
1 stop13h 14m
JetBlue
Tue 7/708:35
PHL
-
LGW
1 stop20h 00m
JetBlue
Deal found 1/6£641
Wed 1/712:20
LGW
-
PHL
1 stop12h 40m
JetBlue
Mon 13/709:20
PHL
-
LGW
1 stop19h 15m
JetBlue
Deal found 1/6£642
Wed 14/1009:15
LCY
-
PHL
1 stop11h 50m
Lufthansa
Wed 21/1017:40
PHL
-
LCY
1 stop19h 15m
Lufthansa
Deal found 2/6£642
Wed 25/1109:00
LHR
-
PHL
2 stops35h 51m
Air Canada
Sun 29/1115:20
PHL
-
LHR
1 stop10h 50m
Air Canada
Deal found 2/6£642
Fri 19/612:20
LGW
-
PHL
1 stop12h 40m
JetBlue
Wed 24/608:28
PHL
-
LGW
1 stop20h 07m
JetBlue
Deal found 2/6£642
Fri 26/612:30
LHR
-
PHL
Nonstop7h 55m
British Airways
Mon 29/617:30
PHL
-
LHR
1 stop9h 30m
British Airways
Deal found 3/6£643
Mon 6/706:45
LCY
-
PHL
1 stop14h 25m
British Airways
Mon 27/720:15
PHL
-
LCY
1 stop14h 00m
British Airways
Deal found 4/6£644
Sun 14/609:15
LHR
-
PHL
Nonstop7h 55m
British Airways
Tue 30/619:20
PHL
-
LHR
Nonstop7h 30m
British Airways
Deal found 3/6£644
Mon 8/614:00
LGW
-
PHL
1 stop23h 51m
Multiple Airlines
Mon 3/808:30
PHL
-
LGW
2 stops20h 30m
Multiple Airlines
Deal found 5/6£644
Mon 6/709:15
LCY
-
PHL
1 stop11h 50m
Lufthansa
Wed 15/717:40
PHL
-
LCY
1 stop19h 15m
Lufthansa
Deal found 4/6£645
Tue 13/1009:30
LHR
-
PHL
1 stop11h 35m
United Airlines
Mon 19/1019:40
PHL
-
LHR
1 stop10h 00m
United Airlines
Deal found 2/6£645
Mon 15/606:30
STN
-
PHL
1 stop17h 25m
Multiple Airlines
Mon 22/620:25
PHL
-
STN
1 stop18h 00m
Multiple Airlines
Deal found 6/6£645

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 6 June 2026.

Round-trip from

£640

One-way from

£344

Popular in

December

Cheapest in

September

Average price

£612
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 14/10-26/10
  • 5 total stops
  • 44h 40m total
  • London to Delaware
Search Deals
23/6
  • 23/6
  • 3 total stops
  • 30h 17m total
  • London to Delaware
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 6 June 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
Fastest return journey

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 4/9

13:45-16:40

Nonstop7h 55m

Philadelphia

Mon 7/9

18:45-06:50

Nonstop7h 05m

£645

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Thu 5/11

06:50-14:05

1 stop12h 15m

Philadelphia

Tue 10/11

20:40-12:20

1 stop10h 40m

£649

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 30/7

07:20-10:04

2 stops31h 44m

Philadelphia

Tue 4/8

10:05-11:05

2 stops20h 00m

£651

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Fri 4/9

17:15-16:10

1 stop27h 55m

Philadelphia

Tue 8/9

18:30-07:55

1 stop32h 25m

£651

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 7/10

09:15-12:15

Nonstop8h 00m

Philadelphia

Wed 21/10

17:50-08:00

1 stop9h 10m

£654

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 14/10

12:05-09:50

2 stops26h 45m

Philadelphia

Tue 20/10

15:25-15:35

2 stops19h 10m

£662

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 1/7

07:25-22:46

2 stops20h 21m

Philadelphia

Mon 13/7

15:10-06:55

1 stop10h 45m

£665

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Tue 13/10

19:15-16:05

2 stops25h 50m

Philadelphia

Tue 20/10

11:20-08:40

2 stops16h 20m

£666

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Tue 21/7

09:40-18:55

1 stop14h 15m

Philadelphia

Tue 28/7

09:26-09:15

2 stops18h 49m

£667

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Thu 15/10

10:35-09:50

2 stops28h 15m

Philadelphia

Tue 20/10

06:00-15:35

2 stops28h 35m

£669

Flights are sorted by cheapest return flights first.

Deals found on 3/6

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?

    British Airways, TAP AIR PORTUGAL, and United Airlines can get you from London to Delaware in just under 7h 55m. Your travel time can differ by up to 18h 50m. 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 £43. Users have also found prices from £62 and £117 on Ryanair 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

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