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Cheap flights from London Heathrow Airport to Delaware from £343

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ILG
8 Jul — 15 Jul1
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 8 June 2026.

Thu 18/609:15
LHR
-
PHL
Nonstop7h 55m
British Airways
Tue 30/615:28
PHL
-
LHR
1 stop11h 32m
British Airways
Deal found 8/6£633
Fri 10/709:15
LHR
-
PHL
Nonstop8h 00m
British Airways
Thu 16/717:30
PHL
-
LHR
1 stop9h 30m
British Airways
Deal found 4/6£643
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
Tue 23/608:40
LHR
-
PHL
1 stop16h 20m
JetBlue
Sat 27/620:55
PHL
-
LHR
1 stop28h 35m
JetBlue
Deal found 8/6£645
Fri 4/915:50
LHR
-
PHL
1 stop30h 50m
Iberia
Wed 16/918:45
PHL
-
LHR
Nonstop7h 05m
Iberia
Deal found 7/6£645
Tue 25/813:45
LHR
-
PHL
Nonstop7h 55m
British Airways
Fri 4/918:45
PHL
-
LHR
Nonstop7h 05m
British Airways
Deal found 8/6£646
Wed 8/712:30
LHR
-
PHL
Nonstop8h 05m
British Airways
Thu 10/1218:35
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 4/6£648
Mon 30/1113:00
LHR
-
PHL
2 stops29h 51m
Air Canada
Sat 5/1215:20
PHL
-
LHR
1 stop10h 50m
Air Canada
Deal found 4/6£649
Sun 5/715:30
LHR
-
PHL
2 stops31h 22m
United Airlines
Sun 12/706:10
PHL
-
LHR
2 stops22h 50m
United Airlines
Deal found 5/6£650
Mon 6/709:30
LHR
-
PHL
2 stops17h 04m
Air Canada
Wed 9/1209:15
PHL
-
LHR
2 stops30h 20m
Air Canada
Deal found 4/6£651

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 8 June 2026.

Round-trip from

£643

One-way from

£343

Popular in

December

Cheapest in

September

Average price

£612
British Airways
  • British Airways
  • 26/6-29/6
  • 1 total stop
  • 17h 25m total
  • London to Delaware
Search Deals
JetBlue
  • JetBlue
  • 1/9
  • 1 total stop
  • 16h 20m 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 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 8 June 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
Fastest return journey

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 29/8

12:30-15:35

Nonstop8h 05m

Philadelphia

Sat 12/9

22:20-10:20

Nonstop7h 00m

£670

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 27/6

09:15-12:10

Nonstop7h 55m

Philadelphia

Fri 10/7

17:30-08:00

1 stop9h 30m

£695

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 5/7

16:40-23:20

1 stop11h 40m

Philadelphia

Sun 12/7

19:45-10:40

1 stop9h 55m

£711

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 26/6

12:40-22:44

2 stops15h 04m

Philadelphia

Sun 28/6

15:10-10:15

2 stops14h 05m

£717

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 24/7

09:30-16:05

1 stop11h 35m

Philadelphia

Sun 26/7

19:45-10:40

1 stop9h 55m

£733

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 25/7

08:40-20:00

1 stop16h 20m

Philadelphia

Mon 10/8

08:28-06:30

1 stop17h 02m

£751

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/11

19:50-20:07

3 stops29h 17m

Philadelphia

Wed 18/11

14:12-21:40

2 stops26h 28m

£771

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 18/6

08:40-20:00

1 stop16h 20m

Philadelphia

Tue 1/12

16:32-06:55

1 stop9h 23m

£783

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 19/6

07:15-18:00

1 stop15h 45m

Philadelphia

Sat 28/11

18:35-06:35

Nonstop7h 00m

£789

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 11/9

06:40-19:58

3 stops18h 18m

Philadelphia

Sun 20/9

15:54-21:40

2 stops24h 46m

£798

Flights are sorted by cheapest return flights first.

Deals found on 8/6

Showing 1-10 of 22 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 8h 05m. 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 (£165), Royal Jordanian (£177), and British Airways (£194).

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

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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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