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

Departing from London Heathrow Airport to Delaware will take you 12h 48m. 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).

How far in advance should I book a flight from London Heathrow Airport to Delaware?

Travelers have found it’s best to book a flight 17 days in advance to save up to 48% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 17 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to Delaware 1-2 weeks in advance for as low as £482, or £772 for flights within the next 24 hours.

What is the cheapest month to fly from London Heathrow Airport to Delaware?

The best pricing can be found in the month of February. Prices to Delaware from London Heathrow Airport average £549. You can even find prices in February for less than £549, as users have found deals to Delaware from as low as £388. The month of August appears to be one of the more expensive times to travel to Delaware from London Heathrow Airport. Flying in the targeted month can save you up to 23%.

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.

£406+ Cheap Flights from London Heathrow Airport to Delaware

Cheap flight deals from Heathrow to Delaware

Round-trip from	£477
One-way from	£406
Popular in	August
Cheapest in	February
Average price	£677

Air Canada
11/9-14/9
4 total stops
27h 43m total
London to Delaware

Search Deals

21/9
3 total stops
33h 12m total
London to Delaware

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£31 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 August 2025

Search Deals

Find flight deals from Heathrow to Delaware

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 26 August 2025.

Thu 11/906:50LHR - PHL

2 stops12h 48mAir Canada

Sun 14/910:35PHL - LHR

2 stops14h 55mAir Canada

Deal found 25/8£477

Thu 9/1008:30LHR - PHL

2 stops15h 27mUnited Airlines

Thu 16/1019:58PHL - LHR

1 stop9h 42mUnited Airlines

Deal found 25/8£477

Fri 28/1106:50LHR - PHL

2 stops12h 57mAir Canada

Wed 3/1215:30PHL - LHR

1 stop10h 40mAir Canada

Deal found 24/8£479

Tue 18/1106:50LHR - PHL

2 stops12h 57mAir Canada

Thu 27/1110:34PHL - LHR

2 stops14h 56mAir Canada

Deal found 24/8£480

Sat 22/1106:30LHR - PHL

1 stop15h 05mLufthansa

Sat 29/1115:30PHL - LHR

1 stop10h 40mLufthansa

Deal found 24/8£480

Mon 1/907:30LHR - PHL

1 stop13h 30mUnited Airlines

Tue 9/915:25PHL - LHR

1 stop10h 05mUnited Airlines

Deal found 24/8£481

Mon 1/917:40LHR - PHL

1 stop21h 14mAir Canada

Tue 9/915:25PHL - LHR

1 stop10h 05mAir Canada

Deal found 24/8£482

Wed 8/1020:05LHR - PHL

2 stops24h 55mSWISS

Wed 15/1017:35PHL - LHR

2 stops17h 50mSWISS

Deal found 24/8£483

Tue 7/1008:55LHR - PHL

1 stop13h 58mBritish Airways

Mon 13/1018:30PHL - LHR

Nonstop7h 10mBritish Airways

Deal found 24/8£484

Mon 1/910:05LHR - PHL

1 stop28h 22mFinnair

Sun 14/919:09PHL - LHR

1 stop31h 31mFinnair

Deal found 25/8£485

Tue 7/1012:30LHR - PHL

Nonstop8h 05mFinnair

Mon 13/1022:15PHL - LHR

Nonstop7h 05mFinnair

Deal found 24/8£486

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 26 August 2025.

Thu 11/906:50LHR - PHL

2 stops12h 48mAir Canada

Sun 14/910:35PHL - LHR

2 stops14h 55mAir Canada

Deal found 25/8£477

Thu 9/1008:30LHR - PHL

2 stops15h 27mUnited Airlines

Thu 16/1019:58PHL - LHR

1 stop9h 42mUnited Airlines

Deal found 25/8£477

Tue 7/1009:30LHR - PHL

1 stop11h 30mMultiple Airlines

Mon 13/1007:30PHL - LHR

2 stops25h 50mMultiple Airlines

Deal found 24/8£479

Thu 9/1006:50LHR - PHL

2 stops12h 48mAir Canada

Thu 16/1015:25PHL - LHR

2 stops15h 25mAir Canada

Deal found 25/8£477

Tue 16/906:50LHR - PHL

2 stops15h 31mUnited Airlines

Tue 30/910:32PHL - LHR

2 stops14h 23mUnited Airlines

Deal found 23/8£479

Sun 5/1006:50LHR - PHL

2 stops12h 48mMultiple Airlines

Tue 21/1013:05PHL - LHR

2 stops14h 30mMultiple Airlines

Deal found 25/8£480

Fri 28/1106:50LHR - PHL

2 stops12h 57mAir Canada

Wed 3/1215:30PHL - LHR

1 stop10h 40mAir Canada

Deal found 24/8£479

Sun 21/906:50LHR - PHL

2 stops12h 48mAir Canada

Sun 28/910:35PHL - LHR

2 stops14h 55mAir Canada

Deal found 25/8£479

Thu 11/906:50LHR - PHL

2 stops12h 48mAir Canada

Thu 18/907:30PHL - LHR

1 stop18h 05mAir Canada

Deal found 24/8£480

Wed 12/1106:50LHR - PHL

2 stops12h 57mAir Canada

Sun 16/1115:30PHL - LHR

2 stops14h 50mAir Canada

Deal found 24/8£480

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 26 August 2025.

Tue 7/1012:30LHR - PHL

Nonstop8h 05mFinnair

Mon 13/1022:15PHL - LHR

Nonstop7h 05mFinnair

Deal found 24/8£486

Wed 8/1012:30LHR - PHL

Nonstop8h 05mMultiple Airlines

Wed 15/1019:50PHL - LHR

Nonstop7h 05mMultiple Airlines

Deal found 23/8£488

Wed 1/1010:05LHR - PHL

Nonstop8h 00mMultiple Airlines

Wed 8/1019:50PHL - LHR

Nonstop7h 05mMultiple Airlines

Deal found 25/8£491

Mon 24/1110:15LHR - PHL

Nonstop8h 10mBritish Airways

Thu 4/1218:35PHL - LHR

Nonstop7h 00mBritish Airways

Deal found 25/8£494

Tue 18/1110:15LHR - PHL

Nonstop8h 10mBritish Airways

Thu 27/1119:45PHL - LHR

Nonstop7h 05mBritish Airways

Deal found 25/8£495

Mon 15/912:30LHR - PHL

Nonstop8h 00mBritish Airways

Mon 22/919:50PHL - LHR

Nonstop7h 15mBritish Airways

Deal found 25/8£504

Mon 15/912:30LHR - PHL

Nonstop8h 00mBritish Airways

Tue 30/922:15PHL - LHR

Nonstop7h 05mBritish Airways

Deal found 23/8£505

Mon 17/1113:10LHR - PHL

Nonstop8h 05mBritish Airways

Mon 8/1218:35PHL - LHR

Nonstop7h 00mBritish Airways

Deal found 25/8£512

Mon 8/910:05LHR - PHL

Nonstop8h 00mIberia

Wed 17/922:15PHL - LHR

Nonstop7h 05mIberia

Deal found 24/8£513

Thu 9/1013:30LHR - PHL

Nonstop7h 55mFinnair

Thu 16/1018:30PHL - LHR

Nonstop7h 10mFinnair

Deal found 25/8£514

Fri 14/1113:10LHR - PHL

Nonstop8h 05mBritish Airways

Mon 17/1118:35PHL - LHR

Nonstop7h 00mBritish Airways

Deal found 25/8£520

Last-minute flights from Heathrow to Delaware
Discover last-minute flight deals from Heathrow to Delaware. Data last updated 26 August 2025 and is based on user searches.

Mon 1/907:30LHR - PHL

1 stop13h 30mUnited Airlines

Tue 9/915:25PHL - LHR

1 stop10h 05mUnited Airlines

Deal found 24/8£481

Mon 1/917:40LHR - PHL

1 stop21h 14mAir Canada

Tue 9/915:25PHL - LHR

1 stop10h 05mAir Canada

Deal found 24/8£482

Mon 1/910:05LHR - PHL

1 stop28h 22mFinnair

Sun 14/919:09PHL - LHR

1 stop31h 31mFinnair

Deal found 25/8£485

Mon 1/910:05LHR - PHL

Nonstop8h 05mBritish Airways

Tue 9/919:50PHL - LHR

Nonstop7h 15mBritish Airways

Deal found 24/8£490

Thu 4/908:25LHR - PHL

1 stop14h 15mJetBlue

Sat 6/918:10PHL - LHR

1 stop31h 20mJetBlue

Deal found 25/8£480

Mon 8/907:30LHR - PHL

1 stop13h 30mUnited Airlines

Mon 15/915:25PHL - LHR

1 stop13h 10mUnited Airlines

Deal found 26/8£477

Thu 11/906:50LHR - PHL

2 stops12h 48mAir Canada

Sun 14/910:35PHL - LHR

2 stops14h 55mAir Canada

Deal found 25/8£477

Thu 11/906:50LHR - PHL

2 stops12h 48mAir Canada

Thu 18/907:30PHL - LHR

1 stop18h 05mAir Canada

Deal found 24/8£480

Mon 15/910:05LHR - PHL

1 stop14h 45mFinnair

Sun 5/1021:25PHL - LHR

1 stop29h 25mFinnair

Deal found 25/8£483

Tue 16/906:50LHR - PHL

2 stops15h 31mUnited Airlines

Tue 30/910:32PHL - LHR

2 stops14h 23mUnited Airlines

Deal found 23/8£479

Sun 21/918:05LHR - PHL

1 stop24h 50mFinnair

Sun 28/919:09PHL - LHR

1 stop32h 56mFinnair

Deal found 25/8£483

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 26 August 2025.

Sun 21/908:50LHR - PHL

3 stops33h 12mMultiple Airlines

Deal found 25/8£406

Wed 3/909:50LHR - PHL

2 stops16h 34mAer Lingus

Deal found 24/8£408

Thu 20/1106:00LHR - PHL

3 stops32h 46mMultiple Airlines

Deal found 24/8£408

Tue 9/908:50LHR - PHL

2 stops18h 00mAer Lingus

Deal found 24/8£411

Tue 16/921:10LHR - PHL

1 stop26h 50mAer Lingus

Deal found 24/8£411

Mon 8/1214:50LHR - PHL

3 stops36h 15mMultiple Airlines

Deal found 25/8£414

Wed 31/1208:50LHR - PHL

2 stops14h 20mAer Lingus

Deal found 24/8£414

Fri 21/1118:50LHR - PHL

3 stops33h 37mMultiple Airlines

Deal found 24/8£415

Sun 7/919:50LHR - PHL

3 stops34h 07mMultiple Airlines

Deal found 25/8£416

Sat 27/907:40LHR - PHL

2 stops19h 49mMultiple Airlines

Deal found 25/8£420

Sun 16/1116:20LHR - PHL

1 stop28h 40mAer Lingus

Deal found 25/8£422

Cheapflights Fare Finder

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

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 11/9

06:50-14:38

2 stops12h 48m

Philadelphia

Sun 14/9

10:35-06:30

2 stops14h 55m

£477

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 9/10

06:50-14:38

2 stops12h 48m

Philadelphia

Thu 16/10

15:25-11:50

2 stops15h 25m

£477

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 9/10

08:30-18:57

2 stops15h 27m

Philadelphia

Thu 16/10

19:58-10:40

1 stop9h 42m

£477

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 7/10

09:30-16:00

1 stop11h 30m

Philadelphia

Mon 13/10

07:30-14:20

2 stops25h 50m

£479

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 16/9

06:50-17:21

2 stops15h 31m

Philadelphia

Tue 30/9

10:32-05:55

2 stops14h 23m

£479

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 28/11

06:50-14:47

2 stops12h 57m

Philadelphia

Wed 3/12

15:30-07:10

1 stop10h 40m

£479

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 21/9

06:50-14:38

2 stops12h 48m

Philadelphia

Sun 28/9

10:35-06:30

2 stops14h 55m

£479

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 5/10

06:50-14:38

2 stops12h 48m

Philadelphia

Tue 21/10

13:05-08:35

2 stops14h 30m

£480

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 11/9

06:50-14:38

2 stops12h 48m

Philadelphia

Thu 18/9

07:30-06:35

1 stop18h 05m

£480

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 12/11

06:50-14:47

2 stops12h 57m

Philadelphia

Sun 16/11

15:30-11:20

2 stops14h 50m

£480

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 19 results

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

How long is the flight from London Heathrow Airport to Delaware?
Departing from London Heathrow Airport to Delaware will take you 12h 48m. 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Delaware

Heathrow to John F Kennedy Intl flights

Heathrow to Newark flights

Gatwick to John F Kennedy Intl flights

Gatwick to Newark flights

London City to John F Kennedy Intl flights

Heathrow to LaGuardia flights

London City to Newark flights

Stansted to John F Kennedy Intl flights

Gatwick to LaGuardia flights

Luton to John F Kennedy Intl flights

London City to LaGuardia flights

Stansted to Newark flights

Luton to Newark flights

Heathrow to Los Angeles flights

Heathrow to Orlando flights

Heathrow to Miami flights

Heathrow to Boston flights

Heathrow to Dallas/Fort Worth flights

Heathrow to Dulles Intl flights

Heathrow to Las Vegas flights

Heathrow to San Francisco flights

Heathrow to O'Hare Intl flights

Gatwick to Orlando flights

Gatwick to Boston flights

Heathrow to Baltimore flights

Heathrow to Seattle flights

Gatwick to Miami flights

London City to Los Angeles flights

London City to Miami flights

Luton to LaGuardia flights

Heathrow to Atlanta flights

Heathrow to Hobby flights

London City to Orlando flights

Heathrow to Tampa flights

Heathrow to Austin flights

London City to Boston flights

Gatwick to Las Vegas flights

Gatwick to Dulles Intl flights

Heathrow to Nashville flights

Gatwick to Dallas/Fort Worth flights

Gatwick to San Francisco flights

London City to Dulles Intl flights

Heathrow to George Bush Intcntl flights

Heathrow to Denver flights

Stansted to Miami flights

Heathrow to Midway flights

London City to Las Vegas flights

Gatwick to O'Hare Intl flights

London City to Dallas/Fort Worth flights

Luton to Los Angeles flights

Direct flights to United States

Fly with Cheapflights

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Delaware from £406

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Delaware

Keep the following information in mind while searching for Heathrow to Delaware flight deals. Data was last updated 26 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 26 August 2025.

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 26 August 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Delaware

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?

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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Delaware

See prices for flight routes from nearby airports that may be better suited for you.

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 Heathrow to Delaware?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 26 August 2025.