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Cheap flights from London Heathrow Airport to Delaware from £312

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ILG
15 Mar — 22 Mar1
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 13 February 2026.

Fri 6/309:20
LHR
-
PHL
1 stop18h 16m
JetBlue
Sun 15/306:00
PHL
-
LHR
1 stop20h 55m
JetBlue
Deal found 12/2£434
Sat 9/508:40
LHR
-
PHL
1 stop13h 58m
JetBlue
Sat 30/515:15
PHL
-
LHR
1 stop10h 15m
JetBlue
Deal found 11/2£435
Wed 4/309:20
LHR
-
PHL
1 stop18h 16m
JetBlue
Mon 9/315:02
PHL
-
LHR
1 stop11h 53m
JetBlue
Deal found 10/2£446
Mon 2/309:20
LHR
-
PHL
1 stop18h 16m
JetBlue
Mon 9/315:02
PHL
-
LHR
1 stop11h 53m
JetBlue
Deal found 10/2£448
Mon 9/309:20
LHR
-
PHL
1 stop17h 16m
JetBlue
Thu 7/508:25
PHL
-
LHR
1 stop17h 05m
JetBlue
Deal found 10/2£450
Wed 25/209:20
LHR
-
PHL
1 stop18h 16m
JetBlue
Mon 9/315:02
PHL
-
LHR
1 stop11h 53m
JetBlue
Deal found 13/2£452
Mon 2/309:20
LHR
-
PHL
1 stop18h 16m
JetBlue
Sun 8/306:00
PHL
-
LHR
1 stop20h 55m
JetBlue
Deal found 11/2£456
Wed 18/309:20
LHR
-
PHL
1 stop14h 04m
JetBlue
Tue 24/306:00
PHL
-
LHR
1 stop20h 55m
JetBlue
Deal found 12/2£456
Wed 16/908:40
LHR
-
PHL
1 stop18h 10m
JetBlue
Wed 30/910:20
PHL
-
LHR
1 stop15h 10m
JetBlue
Deal found 13/2£457
Wed 11/309:20
LHR
-
PHL
1 stop17h 16m
JetBlue
Thu 19/309:54
PHL
-
LHR
1 stop17h 01m
JetBlue
Deal found 11/2£458

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 13 February 2026.

Round-trip from

£432

One-way from

£312

Popular in

December

Cheapest in

September

Average price

£533
JetBlue
  • JetBlue
  • 23/2-26/2
  • 2 total stops
  • 37h 42m total
  • London to Delaware
Search Deals
JetBlue
  • JetBlue
  • 11/5
  • 1 total stop
  • 18h 00m total
  • London to Delaware
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£16 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 13 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Delaware that are best for you.

Fly from

Heathrow

Fly to

Delaware

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 11/5

08:40-17:38

1 stop13h 58m

Philadelphia

Mon 18/5

08:25-06:30

1 stop17h 05m

£469

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 18/3

06:50-21:09

2 stops18h 19m

Philadelphia

Tue 24/3

07:25-20:35

2 stops33h 10m

£484

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 10/3

06:30-21:09

2 stops18h 39m

Philadelphia

Sun 15/3

07:25-20:35

2 stops33h 10m

£490

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 6/5

07:30-16:05

1 stop13h 35m

Philadelphia

Wed 20/5

10:25-21:00

2 stops29h 35m

£491

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 29/4

09:30-00:45

2 stops20h 15m

Philadelphia

Wed 13/5

16:20-21:00

2 stops23h 40m

£496

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 21/4

06:55-22:43

2 stops20h 48m

Philadelphia

Tue 28/4

09:15-21:00

2 stops30h 45m

£497

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 27/4

10:50-00:45

2 stops18h 55m

Philadelphia

Sun 3/5

10:25-21:00

2 stops53h 35m

£501

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 15/4

09:30-00:45

2 stops20h 15m

Philadelphia

Sun 19/4

09:15-21:00

2 stops30h 45m

£502

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/3

09:00-22:44

2 stops17h 44m

Philadelphia

Mon 23/3

15:30-07:10

1 stop11h 40m

£503

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 12/5

08:40-21:40

1 stop18h 00m

Philadelphia

Wed 5/8

09:12-06:30

1 stop16h 18m

£505

Flights are sorted by cheapest return flights first.

Deals found on 13/2

Showing 1-10 of 21 results
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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 13h 58m. Airlines will cover a distance of 3533 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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.
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Stansted to Orlando flights
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London City to Orlando flights
Gatwick to Boston flights
Heathrow to Tampa flights
Stansted to Miami flights
London City to Miami flights
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London City to Los Angeles flights
Stansted to Los Angeles flights
Heathrow to George Bush Intcntl flights
Gatwick to Las Vegas flights
Heathrow to Denver flights
Gatwick to San Francisco flights
London City to Boston flights
Heathrow to Ontario flights
Luton to Miami flights
London City to San Francisco flights
Luton to Orlando flights
Heathrow to Nashville flights
London City to Las Vegas flights
Gatwick to Dallas/Fort Worth flights
Stansted to San Francisco flights
Stansted to Boston 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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