How long is the flight from London Heathrow Airport to Delaware?

Departing from London Heathrow Airport to Delaware will take you 10h 30m. Airlines will cover a distance of 3533 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Delaware ranges from 73.0 - 108.0 inches per month. July is typically the wettest month, when rainfall can reach 108.0 mm. February is typically the driest time to visit Delaware when rainfall is around 73.0 mm.

If weather is an important factor for your trip to Delaware, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

What is the cheapest time of day to fly from LHR to DE?

When flying from London Heathrow Airport to Delaware, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£348+ Cheap Flights from London Heathrow Airport to Delaware

Cheap flight deals from Heathrow to Delaware

Enter your travel dates to find the best prices.

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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 17 September 2026.

Wed 23/914:05 -

1 stop29h 42m

Thu 8/1007:00 -

1 stop18h 35m

Deal found 16/9£589

Fri 23/1016:40 -

1 stop22h 02m

Sun 25/1018:46 -

1 stop33h 09m

Deal found 12/9£590

Fri 23/1009:45 -

1 stop18h 07m

Wed 4/1118:35 -

Nonstop7h 00m

Deal found 15/9£590

Thu 19/1112:05 -

1 stop11h 46m

Sat 28/1119:40 -

1 stop10h 10m

Deal found 15/9£591

Mon 21/909:15 -

Nonstop7h 55m

Mon 28/919:35 -

Nonstop7h 15m

Deal found 14/9£592

Wed 30/913:45 -

Nonstop7h 55m

Tue 6/1018:35 -

1 stop10h 45m

Deal found 15/9£593

Tue 6/1013:25 -

1 stop10h 30m

Wed 28/1018:40 -

1 stop12h 45m

Deal found 15/9£593

Fri 23/1009:30 -

1 stop17h 02m

Mon 2/1110:54 -

1 stop14h 01m

Deal found 12/9£594

Thu 17/1216:20 -

1 stop22h 36m

Thu 28/114:37 -

1 stop11h 03m

Deal found 12/9£596

Mon 5/1007:30 -

1 stop13h 35m

Mon 12/1010:40 -

1 stop15h 15m

Deal found 14/9£596

Thu 8/1007:30 -

1 stop13h 35m

Mon 12/1019:30 -

1 stop10h 10m

Deal found 11/9£597

Find flight deals from Heathrow to Delaware

Round-trip from	£589
One-way from	£348
Popular in	August
Cheapest in	January
Average price	£660

SWISS
6/10-18/10
4 total stops
39h 20m total
London to Delaware

Search Deals

31/10-31/12
2 total stops
37h 05m total
London to Delaware

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£65 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 September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Delaware that are best for you.

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Route

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Price

Cheapest return flight

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Wed 18/11

06:30-14:00

1 stop12h 30m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£403

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Mon 2/11

09:20-17:08

1 stop12h 48m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£408

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Tue 10/11

09:20-17:08

1 stop12h 48m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£409

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Wed 9/12

09:20-18:43

1 stop14h 23m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£413

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Thu 17/12

07:30-16:05

1 stop13h 35m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£432

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Thu 29/10

06:30-17:05

1 stop14h 35m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£455

Fastest return journey

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Mon 14/12

13:10-16:15

Nonstop8h 05m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£470

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Sat 14/11

13:10-16:15

Nonstop8h 05m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£479

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Sat 12/12

13:10-16:15

Nonstop8h 05m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£510

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Fri 9/10

08:40-18:28

1 stop14h 48m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£526

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 23 resultsSorted by cheapest first

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.

LHR-PHL

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

LHR-USDE

LHR-PHL

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from London Heathrow Airport to Delaware?
Departing from London Heathrow Airport to Delaware will take you 10h 30m. 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.

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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?

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Cheap flights from London Heathrow Airport to Delaware from £348

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Delaware

Cheapest flights from Heathrow to DelawareExplore 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 17 September 2026.

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 17 September 2026.

Best flights from Heathrow to DelawareDiscover carefully curated flight deals from Heathrow to Delaware that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Discover carefully curated flight deals from Heathrow to Delaware that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Heathrow to DelawareExplore direct flight options from Heathrow to Delaware based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Explore direct flight options from Heathrow to Delaware based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Heathrow to DelawareDiscover last-minute flight deals from Heathrow to Delaware. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Delaware. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Heathrow to DelawareSearch for one-way flight options from Heathrow to Delaware. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Heathrow to Delaware. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

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Best time to book a flight from Heathrow to Delaware

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Related info for your journey

How long is the flight from London Heathrow Airport to Delaware?

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

How can I find direct flights from Heathrow to Delaware?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Delaware

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Complete your trip

Complete your trip to Delaware by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Search flights from Heathrow to Delaware by cabin class

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Heathrow and Delaware flights

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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 17 September 2026.

Best flights from Heathrow to Delaware
Discover carefully curated flight deals from Heathrow to Delaware that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Heathrow to Delaware
Explore direct flight options from Heathrow to Delaware based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Heathrow to Delaware
Discover last-minute flight deals from Heathrow to Delaware. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Heathrow to Delaware
Search for one-way flight options from Heathrow to Delaware. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.