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Cheap flights from London Heathrow Airport to Delaware from £279

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ILG
4 May — 11 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Delaware

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Delaware
Explore the most affordable flight options available from Heathrow to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 April 2026.

Mon 14/908:40
LHR
-
PHL
1 stop14h 24m
JetBlue
Tue 29/915:25
PHL
-
LHR
1 stop10h 05m
JetBlue
Deal found 31/3£542
Tue 5/508:40
LHR
-
PHL
1 stop13h 58m
JetBlue
Tue 12/508:24
PHL
-
LHR
1 stop17h 06m
JetBlue
Deal found 30/3£545
Wed 29/408:40
LHR
-
PHL
1 stop18h 00m
JetBlue
Tue 12/508:24
PHL
-
LHR
1 stop17h 06m
JetBlue
Deal found 31/3£549
Thu 10/908:40
LHR
-
PHL
1 stop14h 24m
JetBlue
Wed 23/910:45
PHL
-
LHR
1 stop14h 45m
JetBlue
Deal found 31/3£550
Sat 2/508:40
LHR
-
PHL
1 stop14h 33m
JetBlue
Sat 9/516:20
PHL
-
LHR
1 stop9h 10m
JetBlue
Deal found 30/3£551
Wed 22/413:45
LHR
-
PHL
Nonstop7h 50m
British Airways
Fri 1/518:40
PHL
-
LHR
Nonstop7h 10m
British Airways
Deal found 30/3£551
Sun 19/413:45
LHR
-
PHL
Nonstop7h 50m
British Airways
Mon 4/518:40
PHL
-
LHR
Nonstop7h 10m
British Airways
Deal found 30/3£552
Tue 16/608:40
LHR
-
PHL
1 stop16h 20m
JetBlue
Mon 29/608:28
PHL
-
LHR
1 stop17h 02m
JetBlue
Deal found 1/4£553
Tue 5/508:40
LHR
-
PHL
1 stop13h 58m
JetBlue
Mon 25/509:21
PHL
-
LHR
1 stop16h 09m
JetBlue
Deal found 1/4£554
Sun 17/508:40
LHR
-
PHL
1 stop27h 54m
JetBlue
Sun 24/509:21
PHL
-
LHR
1 stop16h 09m
JetBlue
Deal found 2/4£555
Sat 18/412:15
LHR
-
PHL
1 stop11h 39m
United Airlines
Sun 3/515:10
PHL
-
LHR
1 stop14h 30m
United Airlines
Deal found 30/3£556
Thu 7/508:40
LHR
-
PHL
1 stop27h 54m
JetBlue
Tue 19/508:24
PHL
-
LHR
1 stop17h 06m
JetBlue
Deal found 1/4£557

Find flight deals from Heathrow to Delaware

Keep the following information in mind while searching for Heathrow to Delaware flight deals. Data was last updated 4 April 2026.

Round-trip from

£542

One-way from

£279

Popular in

December

Cheapest in

September

Average price

£601
JetBlue
  • JetBlue
  • 14/9-28/9
  • 2 total stops
  • 24h 29m total
  • London to Delaware
Search Deals
JetBlue
  • JetBlue
  • 24/5
  • 1 total stop
  • 15h 12m total
  • London to Delaware
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£12 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 4 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Delaware that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 7/9

09:30-22:46

2 stops18h 16m

Philadelphia

Tue 22/9

10:28-06:55

1 stop15h 27m

£605

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 8/5

07:30-16:05

1 stop13h 35m

Philadelphia

Mon 18/5

10:25-21:00

2 stops29h 35m

£613

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 8/5

09:30-16:05

1 stop11h 35m

Philadelphia

Sun 17/5

16:20-21:00

2 stops23h 40m

£613

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 27/4

20:25-16:05

2 stops24h 40m

Philadelphia

Mon 4/5

17:40-17:40

1 stop19h 00m

£647

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 11/5

09:15-12:10

Nonstop7h 55m

Philadelphia

Mon 18/5

18:30-10:10

1 stop10h 40m

£648

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 15/5

12:40-09:48

2 stops26h 08m

Philadelphia

Fri 22/5

17:40-18:40

1 stop20h 00m

£669

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 20/5

08:40-17:38

1 stop13h 58m

Philadelphia

Sat 27/6

08:28-06:30

1 stop17h 02m

£684

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 6/7

07:30-16:05

1 stop13h 35m

Philadelphia

Sat 18/7

19:45-10:40

1 stop9h 55m

£685

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 15/5

08:50-16:10

1 stop12h 20m

Philadelphia

Fri 22/5

18:40-06:50

Nonstop7h 10m

£691

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 18/5

09:30-16:05

1 stop11h 35m

Philadelphia

Fri 26/6

06:00-06:35

1 stop19h 35m

£691

Flights are sorted by cheapest return flights first.

Deals found on 2/4

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Heathrow 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 Heathrow Airport 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 Heathrow 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 Heathrow Airport to Delaware?

    Departing from London Heathrow Airport to Delaware will take you 18h 16m. Airlines will cover a distance of 3533 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    The cheapet airlines for a one-way flight from London Heathrow Airport to Delaware are Aegean Airlines (£167), Royal Jordanian (£178), and British Airways (£180).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow 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
Heathrow to Orlando flights
Gatwick to Newark flights
Heathrow to Los Angeles flights
Stansted to John F Kennedy Intl flights
London City to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Heathrow to Miami flights
Heathrow to Boston flights
Luton to John F Kennedy Intl flights
Heathrow to San Francisco flights
Heathrow to Dallas/Fort Worth flights
Gatwick to Orlando flights
Heathrow to O'Hare Intl flights
Gatwick to Los Angeles flights
Stansted to Newark flights
Luton to Newark flights
Heathrow to Las Vegas flights
Heathrow to Dulles Intl flights
Heathrow to Seattle flights
London City to Newark flights
Heathrow to Hobby flights
Gatwick to Boston flights
Stansted to Orlando flights
Stansted to Los Angeles flights
Gatwick to Miami flights
London City to Los Angeles flights
Stansted to Miami flights
Heathrow to Atlanta flights
Heathrow to Baltimore flights
Heathrow to Tampa flights
London City to Miami flights
Heathrow to George Bush Intcntl flights
London City to Orlando flights
London City to Boston flights
Heathrow to Ontario flights
Heathrow to Nashville flights
Luton to Los Angeles flights
Stansted to Boston flights
Gatwick to San Francisco flights
Heathrow to Denver flights
Luton to Miami flights
Stansted to LaGuardia flights
London City to San Francisco flights
Gatwick to Dallas/Fort Worth flights
Heathrow to Midway flights
Heathrow to Reagan-National flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Heathrow to Delaware flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Delaware.

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

Need flexible booking options for your flight to Delaware from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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