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Cheap flights from London to Delaware from £225

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 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ILG
25 Jan — 1 Feb1
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 December 2025.

Mon 29/1209:20LHR - PHL
1 stop27h 35mJetBlue
Mon 12/113:30PHL - LHR
1 stop12h 25mJetBlue
Deal found 26/12£604
Tue 30/1209:20LHR - PHL
1 stop13h 50mJetBlue
Tue 20/108:40PHL - LHR
1 stop17h 15mJetBlue
Deal found 26/12£661
Thu 25/1218:30LHR - PHL
2 stops48h 05mMultiple Airlines
Thu 1/119:05PHL - LHR
1 stop30h 50mMultiple Airlines
Deal found 24/12£687
Tue 30/1210:15LHR - PHL
Nonstop8h 00mBritish Airways
Tue 20/121:25PHL - LHR
1 stop11h 00mBritish Airways
Deal found 26/12£724
Mon 29/1214:00LGW - PHL
1 stop15h 40mMultiple Airlines
Mon 12/118:06PHL - LGW
2 stops56h 39mMultiple Airlines
Deal found 26/12£759
Wed 31/1206:30LHR - PHL
1 stop12h 25mBritish Airways
Wed 7/121:25PHL - LHR
1 stop12h 00mBritish Airways
Deal found 26/12£761
Sat 27/1209:20LHR - PHL
1 stop27h 35mJetBlue
Mon 5/119:05PHL - LHR
1 stop30h 50mJetBlue
Deal found 24/12£766
Tue 30/1209:00LHR - PHL
2 stops34h 50mAir Canada
Tue 20/115:30PHL - LHR
1 stop10h 40mAir Canada
Deal found 26/12£770
Mon 29/1211:30LHR - PHL
1 stop33h 35mUnited Airlines
Mon 12/116:35PHL - LHR
2 stops23h 00mUnited Airlines
Deal found 26/12£784
Mon 29/1210:55LCY - PHL
1 stop33h 40mBritish Airways
Mon 12/121:25PHL - LCY
1 stop15h 05mBritish Airways
Deal found 26/12£897
Sat 27/1207:10LCY - PHL
1 stop11h 45mBritish Airways
Mon 29/1219:50PHL - LCY
1 stop13h 45mBritish Airways
Deal found 24/12£981
Sat 27/1221:30LGW - PHL
1 stop23h 30mMultiple Airlines
Wed 31/1217:30PHL - LGW
1 stop9h 40mMultiple Airlines
Deal found 24/12£991

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 December 2025.

Round-trip from

£509

One-way from

£225

Popular in

December

Cheapest in

February

Average price

£713
Iberia
  • Iberia
  • 27/2-9/3
  • Nonstop
  • 15h 10m total
  • London to Delaware
Search Deals
19/2
  • 19/2
  • 1 total stop
  • 34h 17m total
  • London to Delaware
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 December 2025.
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

LCY - PHL

LCYPHL

London City

Thu 8/1

07:15-15:35

1 stop13h 20m

Philadelphia

Wed 4/2

21:25-12:40

1 stop10h 15m

£510

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Thu 8/1

07:15-15:35

1 stop13h 20m

Philadelphia

Tue 3/2

21:25-12:40

1 stop10h 15m

£510

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Thu 8/1

07:15-15:35

1 stop13h 20m

Philadelphia

Thu 5/2

21:25-21:30

1 stop19h 05m

£510

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Tue 13/1

08:40-15:35

1 stop11h 55m

Philadelphia

Tue 27/1

19:55-14:05

1 stop13h 10m

£511

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Thu 15/1

19:40-15:40

1 stop25h 00m

Philadelphia

Fri 30/1

19:55-19:00

1 stop18h 05m

£516

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 17/2

09:20-22:07

1 stop17h 47m

Philadelphia

Fri 20/2

14:52-06:55

1 stop11h 03m

£521

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 9/2

06:50-23:50

3 stops22h 00m

Philadelphia

Mon 16/2

06:00-20:35

3 stops33h 35m

£524

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Mon 9/2

06:55-22:46

3 stops20h 51m

Philadelphia

Mon 16/2

15:30-16:55

2 stops20h 25m

£524

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 21/6

20:15-16:05

1 stop24h 50m

Philadelphia

Sun 28/6

21:05-10:05

1 stop32h 00m

£526

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Sat 31/1

10:20-14:05

2 stops32h 45m

Philadelphia

Sat 7/2

15:56-07:30

1 stop34h 34m

£527

Flights are sorted by cheapest return flights first.

Deals found on 26/12

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?

    British Airways, Iberia, and JetBlue can get you from London to Delaware in just under 13h 20m. Your travel time can differ by up to 11h 40m. 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 £41. Users have also found prices from £50 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 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
Heathrow to LaGuardia flights
London City to John F Kennedy Intl flights
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Gatwick to John F Kennedy Intl flights
Stansted to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Luton to John F Kennedy Intl flights
Stansted to Newark flights
London City to Newark flights
Luton to Newark flights
Heathrow to Orlando flights
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Manchester to John F Kennedy Intl flights
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Manchester to Orlando flights
Heathrow to O'Hare Intl flights
Gatwick to Miami flights
Heathrow to Dulles Intl flights
Gatwick to Los Angeles flights
Heathrow to Tampa flights
Edinburgh to John F Kennedy Intl flights
Heathrow to Seattle flights
Edinburgh to Newark flights
London City to Orlando flights
Manchester to Newark flights
Manchester to LaGuardia flights
London City to Miami flights
Heathrow to Atlanta flights
London City to Los Angeles flights
Heathrow to Hobby flights
Gatwick to Boston flights
Stansted to Miami flights
Edinburgh to Boston flights
Gatwick to Las Vegas flights
Stansted to Los Angeles flights
London City to Las Vegas flights
Heathrow to George Bush Intcntl flights
Heathrow to Baltimore flights
Heathrow to Ontario flights
Heathrow to Fort Lauderdale flights
Heathrow to Denver flights
Heathrow to Nashville flights
Luton to Miami 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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