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 Aer Lingus (£462), British Airways (£466), and Finnair (£468).

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 56 days in advance to save up to 30% 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 56 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 £578, or £783 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 £617. You can even find prices in February for less than £617, as users have found deals to Delaware from as low as £430. 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 21%.

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.

£453+ Flights from London Heathrow Airport to Delaware

Cheap flight deals from Heathrow to Delaware

Round-trip from	£472
One-way from	£462

SWISS
8/3-17/3
4 total stops
56h 10m total
London to Delaware

Search Deals

Aer Lingus
20/3
1 total stop
11h 10m total
London to Delaware

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 20 January 2025.

Sat 8/318:40LHR - PHL

2 stops33h 50mSWISS

Mon 17/316:55PHL - LHR

2 stops22h 20mSWISS

Deal found 20/1£472

Wed 29/109:50LHR - PHL

1 stop11h 50mAmerican Airlines

Sat 8/221:21PHL - LHR

Nonstop6h 59mAmerican Airlines

Deal found 20/1£473

Wed 5/306:30LHR - PHL

1 stop15h 05mMultiple Airlines

Mon 17/319:40PHL - LHR

Nonstop6h 55mMultiple Airlines

Deal found 20/1£474

Sun 16/207:30LHR - PHL

1 stop13h 30mUnited Airlines

Sun 23/217:00PHL - LHR

1 stop33h 55mUnited Airlines

Deal found 19/1£475

Sat 8/308:25LHR - PHL

1 stop13h 59mJetBlue

Mon 17/310:11PHL - LHR

1 stop15h 44mJetBlue

Deal found 20/1£478

Sun 2/219:30LHR - PHL

1 stop25h 05mBritish Airways

Sun 9/219:58PHL - LHR

1 stop30h 02mBritish Airways

Deal found 19/1£479

Wed 29/108:55LHR - PHL

2 stops18h 41mAir Canada

Sat 8/215:30PHL - LHR

1 stop10h 40mAir Canada

Deal found 20/1£481

Sat 15/214:30LHR - PHL

1 stop13h 06mLufthansa

Thu 20/215:30PHL - LHR

2 stops15h 20mLufthansa

Deal found 19/1£484

Wed 29/110:15LHR - PHL

Nonstop8h 15mFinnair

Sat 8/221:21PHL - LHR

Nonstop6h 59mFinnair

Deal found 19/1£486

Sun 16/219:25LHR - PHL

2 stops32h 11mAustrian Airlines

Sun 23/217:35PHL - LHR

2 stops15h 30mAustrian Airlines

Deal found 19/1£502

Thu 6/307:20LHR - PHL

1 stop13h 55mIberia

Tue 18/319:40PHL - LHR

Nonstop6h 55mIberia

Deal found 20/1£521

Thu 13/208:50LHR - PHL

2 stops19h 30mVirgin Atlantic

Sat 15/218:07PHL - LHR

1 stop31h 13mVirgin Atlantic

Deal found 19/1£527

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 20 January 2025.

Sat 8/318:40LHR - PHL

2 stops33h 50mSWISS

Mon 17/316:55PHL - LHR

2 stops22h 20mSWISS

Deal found 20/1£472

Wed 29/109:50LHR - PHL

1 stop11h 50mAmerican Airlines

Sat 8/221:21PHL - LHR

Nonstop6h 59mAmerican Airlines

Deal found 20/1£473

Wed 5/306:30LHR - PHL

1 stop15h 05mMultiple Airlines

Mon 17/319:40PHL - LHR

Nonstop6h 55mMultiple Airlines

Deal found 20/1£474

Sun 16/207:30LHR - PHL

1 stop13h 30mUnited Airlines

Sun 23/217:00PHL - LHR

1 stop33h 55mUnited Airlines

Deal found 19/1£475

Sun 2/219:30LHR - PHL

1 stop25h 05mBritish Airways

Sun 9/219:58PHL - LHR

1 stop30h 02mBritish Airways

Deal found 19/1£479

Wed 29/108:55LHR - PHL

2 stops18h 41mAir Canada

Sat 8/215:30PHL - LHR

1 stop10h 40mAir Canada

Deal found 20/1£481

Sat 15/214:30LHR - PHL

1 stop13h 06mLufthansa

Thu 20/215:30PHL - LHR

2 stops15h 20mLufthansa

Deal found 19/1£484

Wed 29/110:15LHR - PHL

Nonstop8h 15mFinnair

Sat 8/221:21PHL - LHR

Nonstop6h 59mFinnair

Deal found 19/1£486

Mon 27/114:30LHR - PHL

1 stop13h 22mKLM

Mon 3/218:07PHL - LHR

1 stop11h 28mKLM

Deal found 20/1£486

Tue 4/308:25LHR - PHL

1 stop14h 00mJetBlue

Sat 15/310:11PHL - LHR

1 stop15h 44mJetBlue

Deal found 20/1£488

Mon 27/108:55LHR - PHL

2 stops19h 25mVirgin Atlantic

Wed 4/610:45PHL - LHR

1 stop17h 40mVirgin Atlantic

Deal found 20/1£491

Mon 17/213:10LHR - PHL

Nonstop8h 10mIberia

Sat 22/218:35PHL - LHR

1 stop32h 40mIberia

Deal found 20/1£493

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 20 January 2025.

Thu 13/213:10LHR - PHL

Nonstop8h 10mFinnair

Mon 17/218:40PHL - LHR

Nonstop6h 55mFinnair

Deal found 19/1£477

Thu 30/110:15LHR - PHL

Nonstop8h 15mBritish Airways

Mon 3/218:40PHL - LHR

Nonstop6h 55mBritish Airways

Deal found 19/1£477

Wed 23/410:05LHR - PHL

Nonstop7h 45mAmerican Airlines

Sun 27/419:35PHL - LHR

Nonstop7h 30mAmerican Airlines

Deal found 20/1£503

Mon 9/613:30LHR - PHL

Nonstop7h 55mIberia

Thu 19/618:30PHL - LHR

Nonstop7h 10mIberia

Deal found 19/1£513

Sat 15/213:10LHR - PHL

Nonstop8h 10mMultiple Airlines

Thu 20/221:16PHL - LHR

Nonstop7h 04mMultiple Airlines

Deal found 20/1£538

Last-minute flights from Heathrow to Delaware
Discover last-minute flight deals from Heathrow to Delaware. Data last updated 20 January 2025 and is based on user searches.

Mon 27/111:25LHR - PHL

1 stop11h 29mMultiple Airlines

Mon 3/214:00PHL - LHR

1 stop10h 55mMultiple Airlines

Deal found 19/1£477

Mon 27/113:10LHR - PHL

Nonstop8h 10mIberia

Mon 3/218:40PHL - LHR

Nonstop6h 55mIberia

Deal found 20/1£481

Mon 27/114:30LHR - PHL

1 stop13h 22mKLM

Mon 3/218:07PHL - LHR

1 stop11h 28mKLM

Deal found 20/1£486

Mon 27/108:55LHR - PHL

2 stops19h 25mVirgin Atlantic

Wed 4/610:45PHL - LHR

1 stop17h 40mVirgin Atlantic

Deal found 20/1£491

Wed 29/109:50LHR - PHL

1 stop11h 50mAmerican Airlines

Sat 8/221:21PHL - LHR

Nonstop6h 59mAmerican Airlines

Deal found 20/1£473

Wed 29/110:00LHR - PHL

2 stops18h 20mDelta

Wed 14/513:00PHL - LHR

2 stops13h 15mDelta

Deal found 20/1£478

Wed 29/108:55LHR - PHL

2 stops18h 41mAir Canada

Sat 8/215:30PHL - LHR

1 stop10h 40mAir Canada

Deal found 20/1£481

Wed 29/110:15LHR - PHL

Nonstop8h 15mFinnair

Sat 8/221:21PHL - LHR

Nonstop6h 59mFinnair

Deal found 19/1£486

Wed 29/113:10LHR - PHL

Nonstop8h 10mBritish Airways

Wed 14/522:10PHL - LHR

Nonstop7h 10mBritish Airways

Deal found 19/1£490

Wed 29/107:50LHR - PHL

2 stops16h 17mAer Lingus

Sun 4/515:56PHL - LHR

2 stops14h 14mAer Lingus

Deal found 19/1£624

Thu 30/107:10LHR - PHL

2 stops16h 11mUnited Airlines

Mon 3/210:10PHL - LHR

2 stops14h 45mUnited Airlines

Deal found 19/1£477

Thu 30/110:00LHR - PHL

2 stops13h 21mLufthansa

Mon 3/210:35PHL - LHR

2 stops16h 50mLufthansa

Deal found 20/1£485

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 20 January 2025.

Thu 20/309:50LHR - PHL

1 stop11h 10mAer Lingus

Deal found 19/1£462

Wed 19/209:50LHR - PHL

1 stop11h 45mBritish Airways

Deal found 19/1£466

Wed 19/210:15LHR - PHL

Nonstop8h 05mFinnair

Deal found 19/1£468

Thu 20/319:05LHR - PHL

3 stops31h 36mMultiple Airlines

Deal found 19/1£473

Sat 8/210:15LHR - PHL

Nonstop8h 15mIberia

Deal found 19/1£489

Tue 4/208:25LHR - PHL

1 stop15h 13mJetBlue

Deal found 19/1£513

Thu 20/310:15LHR - PHL

Nonstop7h 50mMalaysia Airlines

Deal found 20/1£515

Fri 24/109:10LHR - PHL

1 stop13h 41mVirgin Atlantic

Deal found 19/1£546

Wed 9/411:20LHR - PHL

2 stops25h 18mTAP AIR PORTUGAL

Deal found 19/1£567

Sat 25/115:00LHR - PHL

1 stop28h 50mLufthansa

Deal found 19/1£624

Tue 25/319:50LHR - PHL

3 stops29h 25mScandinavian Airlines

Deal found 20/1£1,914

Find flights from Heathrow to Delaware within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 8/3

18:40-23:30

2 stops33h 50m

Philadelphia

Mon 17/3

16:55-19:15

2 stops22h 20m

£472

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 6/2

08:25-19:07

1 stop15h 42m

Philadelphia

Mon 28/4

08:15-06:30

1 stop17h 15m

£473

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 5/3

06:30-16:35

1 stop15h 05m

Philadelphia

Tue 18/3

19:40-06:35

Nonstop6h 55m

£474

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 16/2

07:30-16:00

1 stop13h 30m

Philadelphia

Sun 23/2

17:00-07:55

1 stop33h 55m

£475

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 25/4

06:50-14:47

2 stops12h 57m

Philadelphia

Mon 19/5

15:20-10:00

1 stop13h 40m

£476

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 30/1

10:15-13:30

Nonstop8h 15m

Philadelphia

Mon 3/2

18:40-06:35

Nonstop6h 55m

£477

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 15/2

14:30-22:36

1 stop13h 06m

Philadelphia

Thu 20/2

15:30-11:50

2 stops15h 20m

£484

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 23/4

12:30-15:15

Nonstop7h 45m

Philadelphia

Sun 27/4

21:15-06:55

1 stop28h 40m

£487

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 30/1

10:15-13:30

Nonstop8h 15m

Philadelphia

Mon 3/2

18:40-06:35

Nonstop6h 55m

£489

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 11/2

14:35-21:23

1 stop11h 48m

Philadelphia

Tue 18/2

13:00-06:50

1 stop12h 50m

£490

Flights are sorted by cheapest return flights first.

Deals found on 19/1

Showing 1-10 of 31 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.

Travel insights for flights from Heathrow to Delaware

Get recent, data-driven insights about flights from Heathrow to Delaware including ideal travel times, pricing trends, and more.

Rainfall in Delaware by month

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.

Temperature in Delaware by month

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).

Reviews of airlines servicing Delaware

Read through reviews of airlines operating flights from London to Delaware, such as United Airlines, British Airways and JetBlue. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

8,521 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,341 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,285 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines

7.6

Good

786 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,599 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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 Aer Lingus (£462), British Airways (£466), and Finnair (£468).
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

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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!

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Cheap flights from London Heathrow Airport to Delaware from £453

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Delaware

Round-trip from

One-way from

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 20 January 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 20 January 2025.

Find flights from Heathrow to Delaware within your budget

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.

Travel insights for flights from Heathrow to Delaware

Get recent, data-driven insights about flights from Heathrow to Delaware including ideal travel times, pricing trends, and more.

Rainfall in Delaware by month

Plan your trip to Delaware by taking into account the average rainfall totals by month.

Temperature in Delaware by month

Plan your trip to Delaware by taking into account the average temperature totals by month.

Reviews of airlines servicing Delaware

Read through reviews of airlines operating flights from London to Delaware, such as United Airlines, British Airways and JetBlue. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

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?

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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 20 January 2025.