What is the cheapest airline that flies from London Heathrow to Delaware?

JetBlue and British Airways are the most popular carriers operating from London Heathrow to Delaware

How many flights depart from London Heathrow Airport to Delaware on average per week?

As of June 2026, 105 flights take off from London Heathrow Airport and land in Delaware each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

When did momondo last update prices for flights from London Heathrow Airport to Delaware?

Prices for flights from London Heathrow Airport to Delaware are updated daily.

How many operators does momondo search for flights from London Heathrow Airport to Delaware?

There are 9 operators available for flights from London Heathrow Airport to Delaware as of June 2026.

How old do you have to be to fly from London Heathrow Airport to Delaware?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Delaware.

What documentation or ID do you need to fly to Delaware?

The travel and health documents you'll need for your trip to Delaware may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Delaware. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£342 Cheap Flights from London Heathrow Airport to Delaware in 2026

Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from London Heathrow Airport to Delaware

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

12:30 - 15:25

LHR

PHL

7h 55mdirect

18:30 - 10:10

PHL

LHR

10h 40m

1 stop

£623American Airlines

Mon, 29 Jun - Thu, 6 Aug

08:40 - 08:30

LHR

PHL

28h 50m

1 stop

09:20 - 06:30

PHL

LHR

16h 10m

1 stop

£624JetBlue

Thu, 23 Jul - Wed, 29 Jul

09:30 - 14:49

LHR

PHL

10h 19m

1 stop

10:45 - 06:30

PHL

LHR

14h 45m

2 stops

£625Air Canada

Wed, 8 Jul - Sun, 12 Jul

09:15 - 12:15

LHR

PHL

8h 00mdirect

22:15 - 10:20

PHL

LHR

7h 05mdirect

£625American Airlines

Wed, 8 Jul - Mon, 13 Jul

09:15 - 12:10

LHR

PHL

7h 55mdirect

19:35 - 07:50

PHL

LHR

7h 15mdirect

£626British Airways

Mon, 29 Jun - Thu, 6 Aug

06:30 - 19:03

LHR

PHL

17h 33m

2 stops

16:45 - 11:20

PHL

LHR

13h 35m

1 stop

£628Multiple Airlines

Tue, 18 Aug - Mon, 24 Aug

08:40 - 20:00

LHR

PHL

16h 20m

1 stop

08:28 - 06:30

PHL

LHR

17h 02m

1 stop

£629JetBlue

Tue, 30 Jun - Sat, 4 Jul

12:30 - 15:35

LHR

PHL

8h 05mdirect

22:20 - 18:55

PHL

LHR

15h 35m

1 stop

£630British Airways

Sat, 4 Jul - Wed, 15 Jul

20:05 - 16:05

LHR

PHL

25h 00m

2 stops

17:40 - 13:00

PHL

LHR

14h 20m

2 stops

£632SWISS

Wed, 8 Jul - Sun, 12 Jul

12:15 - 20:08

LHR

PHL

12h 53m

1 stop

22:15 - 10:20

PHL

LHR

7h 05mdirect

£633British Airways

Tue, 30 Jun - Tue, 7 Jul

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Iberia flights from London Heathrow Airport to Delaware

Our best Iberia deals on London Heathrow Airport to Delaware flight tickets

Iberia

22 Jun

LHR09:15London Heathrow

7h 55m

PHL12:10Philadelphia

3 Jul

PHL19:35Philadelphia

7h 15m

LHR07:50London Heathrow

£633

Iberia

8 Jul

LHR09:15London Heathrow

8h 00m

PHL12:15Philadelphia

17 Jul

PHL18:50Philadelphia

7h 00m

LHR06:50London Heathrow

£637

Iberia

6 Jul

LHR09:15London Heathrow

8h 00m

PHL12:15Philadelphia

6 Aug

PHL19:25Philadelphia

7h 25m

LHR07:50London Heathrow

£649

United Airlines flights from London Heathrow Airport to Delaware

Our best United Airlines deals on London Heathrow Airport to Delaware flight tickets

United Airlines

12 Jul

LHR07:30London Heathrow

13h 35m

1 stop

PHL16:05Philadelphia

18 Jul

PHL06:00Philadelphia

19h 45m

1 stop

LHR06:45London Heathrow

£663

United Airlines

3 Jul

LHR07:45London Heathrow

16h 09m

2 stops

PHL18:54Philadelphia

5 Jul

PHL07:00Philadelphia

33h 00m

2 stops

LHR21:00London Heathrow

£666

United Airlines

10 Jul

LHR09:30London Heathrow

14h 24m

2 stops

PHL18:54Philadelphia

26 Jul

PHL10:39Philadelphia

14h 16m

2 stops

LHR05:55London Heathrow

£669

momondo 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

Cheapest return flight

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 29/6

12:30-15:25

Nonstop7h 55m

Philadelphia

Thu 6/8

18:30-10:10

1 stop10h 40m

£623

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 23/7

08:40-08:30

1 stop28h 50m

Philadelphia

Wed 29/7

09:20-06:30

1 stop16h 10m

£624

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 8/7

09:30-14:49

1 stop10h 19m

Philadelphia

Sun 12/7

10:45-06:30

2 stops14h 45m

£625

Fastest return journey

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 8/7

09:15-12:15

Nonstop8h 00m

Philadelphia

Mon 13/7

22:15-10:20

Nonstop7h 05m

£625

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 29/6

09:15-12:10

Nonstop7h 55m

Philadelphia

Thu 6/8

19:35-07:50

Nonstop7h 15m

£626

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 18/8

06:30-19:03

2 stops17h 33m

Philadelphia

Mon 24/8

16:45-11:20

1 stop13h 35m

£628

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 30/6

08:40-20:00

1 stop16h 20m

Philadelphia

Sat 4/7

08:28-06:30

1 stop17h 02m

£629

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 4/7

12:30-15:35

Nonstop8h 05m

Philadelphia

Wed 15/7

22:20-18:55

1 stop15h 35m

£630

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 8/7

20:05-16:05

2 stops25h 00m

Philadelphia

Sun 12/7

17:40-13:00

2 stops14h 20m

£632

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 30/6

12:15-20:08

1 stop12h 53m

Philadelphia

Tue 7/7

22:15-10:20

Nonstop7h 05m

£633

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Delaware

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Delaware?

On average, the least expensive day to fly to Delaware from London Heathrow Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £606. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Delaware for around £685.

What is the cheapest time of day to depart on your flight to Delaware?

Our most recent data shows that the best time of day to fly to Delaware is in the morning. Flights from London Heathrow Airport to Delaware during this time can be as low as £638. In contrast, the most expensive time of day to depart to Delaware is at midday when prices are around £650.

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

You are more likely to see cheaper flights to Delaware from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Delaware for around £621 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Delaware from London Heathrow Airport for as low as £548 on momondo.

Cheap London Heathrow Airport to Delaware flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Delaware

Fastest flight time	7h 55m
Direct flights	Every day
Airports in Delaware	17 airports

The fastest flight from London Heathrow Airport to Delaware takes 7h 55m

Direct flights go from London Heathrow Airport to Delaware every day.

There are 17 airports in Delaware. From London Heathrow Airport there are direct flights to Philadelphia (PHL).

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Frequently asked questions about flying from London Heathrow Airport to Delaware

When did momondo last update prices for flights from London Heathrow Airport to Delaware?
Prices for flights from London Heathrow Airport to Delaware are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Delaware?
There are 9 operators available for flights from London Heathrow Airport to Delaware as of June 2026.
How old do you have to be to fly from London Heathrow Airport to Delaware?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Delaware.
What documentation or ID do you need to fly to Delaware?
The travel and health documents you'll need for your trip to Delaware may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Delaware. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from London to Delaware?

It is quick and easy to find London to Delaware flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Delaware that suits you.

Can I find flights from London to Delaware with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Delaware from London with this policy.

How can momondo help me find flights from London to Delaware?

momondo provides multiple filters to help you find the best flight to Delaware from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Delaware right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Delaware now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Delaware and let you know when they change.