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

As of May 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.

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

United Airlines, American Airlines, and Air Canada are the most popular carriers operating from London Heathrow 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 May 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.

£445 Cheap Flights from London Heathrow Airport to Delaware in 2026

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Find the cheapest flights from London Heathrow Airport to Delaware

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

09:30 - 14:49

LHR

PHL

10h 19m

1 stop

15:25 - 06:30

PHL

LHR

10h 05m

1 stop

£581Air Canada

Sat, 11 Jul - Sat, 25 Jul

08:40 - 18:52

LHR

PHL

15h 12m

1 stop

08:28 - 06:30

PHL

LHR

17h 02m

1 stop

£583JetBlue

Tue, 2 Jun - Wed, 1 Jul

06:55 - 16:05

LHR

PHL

14h 10m

2 stops

15:25 - 21:00

PHL

LHR

48h 35m

2 stops

£584Lufthansa

Thu, 21 May - Sat, 6 Jun

08:40 - 18:52

LHR

PHL

15h 12m

1 stop

08:28 - 06:30

PHL

LHR

17h 02m

1 stop

£584JetBlue

Tue, 2 Jun - Wed, 1 Jul

08:50 - 18:55

LHR

PHL

15h 05m

1 stop

20:25 - 18:55

PHL

LHR

17h 30m

1 stop

£587Aer Lingus

Thu, 4 Jun - Thu, 11 Jun

08:40 - 18:04

LHR

PHL

14h 24m

1 stop

15:25 - 06:30

PHL

LHR

10h 05m

1 stop

£591JetBlue

Fri, 25 Sep - Thu, 1 Oct

15:30 - 16:05

LHR

PHL

29h 35m

1 stop

10:35 - 21:00

PHL

LHR

29h 25m

2 stops

£593United Airlines

Mon, 31 Aug - Tue, 8 Sep

11:10 - 19:11

LHR

PHL

13h 01m

1 stop

13:29 - 09:40

PHL

LHR

15h 11m

1 stop

£594American Airlines

Mon, 24 Aug - Thu, 10 Sep

13:25 - 18:55

LHR

PHL

10h 30m

1 stop

20:25 - 13:55

PHL

LHR

12h 30m

1 stop

£595Aer Lingus

Thu, 4 Jun - Sat, 13 Jun

06:30 - 16:05

LHR

PHL

14h 35m

1 stop

15:25 - 06:35

PHL

LHR

34h 10m

2 stops

£595Lufthansa

Fri, 10 Jul - Sat, 11 Jul

Air Canada flights from London Heathrow Airport to Delaware

Our best Air Canada deals on London Heathrow Airport to Delaware flight tickets

Air Canada

13 Jun

LHR09:30London Heathrow

10h 18m

1 stop

PHL14:48Philadelphia

20 Jun

PHL16:20Philadelphia

12h 15m

1 stop

LHR09:35London Heathrow

£584

Air Canada

13 May

LHR08:40London Heathrow

17h 53m

2 stops

PHL21:33Philadelphia

19 May

PHL10:25Philadelphia

15h 05m

2 stops

LHR06:30London Heathrow

£599

Air Canada

16 Sept

LHR09:30London Heathrow

10h 17m

1 stop

PHL14:47Philadelphia

20 Sept

PHL10:35Philadelphia

42h 25m

2 stops

LHR10:00London Heathrow

£604

JetBlue flights from London Heathrow Airport to Delaware

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

JetBlue

2 Jun

LHR08:40London Heathrow

15h 12m

1 stop

PHL18:52Philadelphia

1 Jul

PHL08:28Philadelphia

17h 02m

1 stop

LHR06:30London Heathrow

£584

JetBlue

25 Sept

LHR08:40London Heathrow

14h 24m

1 stop

PHL18:04Philadelphia

1 Oct

PHL15:25Philadelphia

10h 05m

1 stop

LHR06:30London Heathrow

£591

JetBlue

17 Sept

LHR08:40London Heathrow

14h 24m

1 stop

PHL18:04Philadelphia

24 Sept

PHL06:00Philadelphia

19h 30m

1 stop

LHR06:30London Heathrow

£596

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

Fastest return journey

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 11/7

09:30-14:49

1 stop10h 19m

Philadelphia

Sat 25/7

15:25-06:30

1 stop10h 05m

£581

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 2/6

08:40-18:52

1 stop15h 12m

Philadelphia

Wed 1/7

08:28-06:30

1 stop17h 02m

£583

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 21/5

06:55-16:05

2 stops14h 10m

Philadelphia

Sat 6/6

15:25-21:00

2 stops48h 35m

£584

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 2/6

08:40-18:52

1 stop15h 12m

Philadelphia

Wed 1/7

08:28-06:30

1 stop17h 02m

£584

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 4/6

08:50-18:55

1 stop15h 05m

Philadelphia

Thu 11/6

20:25-18:55

1 stop17h 30m

£587

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 25/9

08:40-18:04

1 stop14h 24m

Philadelphia

Thu 1/10

15:25-06:30

1 stop10h 05m

£591

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 31/8

15:30-16:05

1 stop29h 35m

Philadelphia

Tue 8/9

10:35-21:00

2 stops29h 25m

£593

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 24/8

11:10-19:11

1 stop13h 01m

Philadelphia

Thu 10/9

13:29-09:40

1 stop15h 11m

£594

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 4/6

13:25-18:55

1 stop10h 30m

Philadelphia

Sat 13/6

20:25-13:55

1 stop12h 30m

£595

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 10/7

06:30-16:05

1 stop14h 35m

Philadelphia

Sat 11/7

15:25-06:35

2 stops34h 10m

£595

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 £596. 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 £660.

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 £617. In contrast, the most expensive time of day to depart to Delaware is at midday when prices are around £620.

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 £574 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 £518 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 50m
Direct flights	Every day
Airports in Delaware	17 airports

The fastest flight from London Heathrow Airport to Delaware takes 7h 50m

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 May 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.