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

The number of flights available between London and Delaware is 105 per week as of May 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

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

SWISS, Delta, and British Airways are the most popular carriers operating from London to Delaware

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

Prices for flights from London to Delaware are refreshed on a daily basis.

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

As of May 2026, there are 9 operators available to choose from for flights from London to Delaware.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Delaware.

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

The required travel and health documents for your Delaware trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Delaware. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£455 Cheap Flights from London to Delaware in 2026

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Find the cheapest flights from London to Delaware

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

08:40 - 09:50

LHR

PHL

30h 10m

1 stop

19:00 - 06:30

PHL

LHR

30h 30m

1 stop

£603JetBlue

Sun, 20 Sep - Sun, 4 Oct

20:25 - 16:05

LHR

PHL

24h 40m

2 stops

15:25 - 08:35

PHL

LHR

36h 10m

2 stops

£605Lufthansa

Thu, 10 Sep - Sat, 19 Sep

08:40 - 18:04

LHR

PHL

14h 24m

1 stop

06:00 - 06:30

PHL

LHR

19h 30m

1 stop

£606JetBlue

Thu, 10 Sep - Thu, 24 Sep

11:40 - 19:55

LHR

PHL

13h 15m

1 stop

15:39 - 07:20

PHL

LHR

10h 41m

1 stop

£606American Airlines

Tue, 10 Nov - Tue, 1 Dec

14:00 - 23:43

LGW

PHL

14h 43m

1 stop

07:20 - 10:00

PHL

LGW

21h 40m

2 stops

£606Multiple Airlines

Wed, 10 Jun - Tue, 30 Jun

14:00 - 00:20

LGW

PHL

15h 20m

1 stop

19:47 - 10:00

PHL

LGW

33h 13m

2 stops

£607Multiple Airlines

Mon, 5 Oct - Mon, 19 Oct

08:40 - 18:04

LHR

PHL

14h 24m

1 stop

15:25 - 06:30

PHL

LHR

10h 05m

1 stop

£607JetBlue

Thu, 10 Sep - Thu, 24 Sep

08:40 - 09:50

LHR

PHL

30h 10m

1 stop

19:00 - 06:30

PHL

LHR

30h 30m

1 stop

£608JetBlue

Fri, 11 Sep - Fri, 25 Sep

19:15 - 16:05

LCY

PHL

25h 50m

2 stops

17:40 - 12:35

PHL

LCY

13h 55m

2 stops

£669SWISS

Tue, 15 Sep - Mon, 21 Sep

19:15 - 16:05

LCY

PHL

25h 50m

2 stops

17:40 - 12:35

PHL

LCY

13h 55m

2 stops

£670SWISS

Mon, 5 Oct - Mon, 19 Oct

Aer Lingus flights from London to Delaware

Our best Aer Lingus deals on London to Delaware flight tickets

Aer Lingus

9 Jun

LHR12:00London Heathrow

11h 55m

1 stop

PHL18:55Philadelphia

16 Jun

PHL20:25Philadelphia

11h 15m

1 stop

LHR12:40London Heathrow

£633

Aer Lingus

9 Jun

LHR12:00London Heathrow

11h 55m

1 stop

PHL18:55Philadelphia

23 Jun

PHL20:25Philadelphia

9h 45m

1 stop

LHR11:10London Heathrow

£634

Aer Lingus

20 May

LHR09:50London Heathrow

11h 20m

1 stop

PHL16:10Philadelphia

2 Jun

PHL18:45Philadelphia

7h 05m

LHR06:50London Heathrow

£792

American Airlines flights from London to Delaware

Our best American Airlines deals on London to Delaware flight tickets

American Airlines

10 Nov

LHR11:40London Heathrow

13h 15m

1 stop

PHL19:55Philadelphia

1 Dec

PHL15:39Philadelphia

10h 41m

1 stop

LHR07:20London Heathrow

£606

American Airlines

24 Jun

LHR13:45London Heathrow

7h 55m

PHL16:40Philadelphia

7 Jul

PHL13:53Philadelphia

11h 22m

1 stop

LHR06:15London Heathrow

£628

American Airlines

17 Jun

LHR14:30London Heathrow

11h 33m

1 stop

PHL21:03Philadelphia

9 Jul

PHL13:53Philadelphia

11h 22m

1 stop

LHR06:15London Heathrow

£638

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 20/9

08:40-09:50

1 stop30h 10m

Philadelphia

Sun 4/10

19:00-06:30

1 stop30h 30m

£603

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 10/9

20:25-16:05

2 stops24h 40m

Philadelphia

Sat 19/9

15:25-08:35

2 stops36h 10m

£605

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 10/9

08:40-18:04

1 stop14h 24m

Philadelphia

Thu 24/9

06:00-06:30

1 stop19h 30m

£606

Fastest return journey

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 10/11

11:40-19:55

1 stop13h 15m

Philadelphia

Tue 1/12

15:39-07:20

1 stop10h 41m

£606

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 10/6

14:00-23:43

1 stop14h 43m

Philadelphia

Tue 30/6

07:20-10:00

2 stops21h 40m

£606

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 5/10

14:00-00:20

1 stop15h 20m

Philadelphia

Mon 19/10

19:47-10:00

2 stops33h 13m

£607

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 10/9

08:40-18:04

1 stop14h 24m

Philadelphia

Thu 24/9

15:25-06:30

1 stop10h 05m

£607

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 11/9

08:40-09:50

1 stop30h 10m

Philadelphia

Fri 25/9

19:00-06:30

1 stop30h 30m

£608

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Tue 15/9

19:15-16:05

2 stops25h 50m

Philadelphia

Mon 21/9

17:40-12:35

2 stops13h 55m

£669

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Mon 5/10

19:15-16:05

2 stops25h 50m

Philadelphia

Mon 19/10

17:40-12:35

2 stops13h 55m

£670

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 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 is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £595. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from London to Delaware for around £661.

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 at midday. Flights from London to Delaware during this time can be as low as £615. In contrast, the most expensive time of day to depart to Delaware is in the morning when prices are around £621.

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

You are more likely to see cheaper flights to Delaware from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Delaware for around £588 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 for as low as £533 on momondo.

Cheap London to Delaware flight deals and tips

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

Fastest flight time	7h 50m
Direct flights	Every day
Airports in Delaware	17 airports

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

Direct flights go from London to Delaware every day.

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

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Frequently asked questions about flying from London to Delaware

When did momondo last update prices for flights from London to Delaware?
Prices for flights from London to Delaware are refreshed on a daily basis.
How many operators does momondo search for flights from London to Delaware?
As of May 2026, there are 9 operators available to choose from for flights from London to Delaware.
How old do you have to be to fly from London to Delaware?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Delaware.
What documentation or ID do you need to fly to Delaware?
The required travel and health documents for your Delaware trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Delaware. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Delaware from London.

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

All flight searches from London to Delaware on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for London to Delaware flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Delaware from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.