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

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

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

The number of flights available between London and Delaware is 58 per week as of December 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

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 December 2025, 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.

£271 Cheap Flights from London to Delaware in 2025/26

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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.

13:25 - 22:46

LHR

PHL

38h 21m2 stops

16:35 - 13:00

PHL

LHR

15h 25m2 stops

£530Air Canada

Mon, 12 Jan - Mon, 19 Jan

19:15 - 14:05

LCY

PHL

23h 50m2 stops

19:55 - 14:05

PHL

LCY

13h 10m1 stop

£531Iberia

Tue, 13 Jan - Tue, 27 Jan

17:10 - 21:36

LHR

PHL

33h 26m2 stops

13:10 - 11:15

PHL

LHR

17h 05m2 stops

£531SWISS

Mon, 19 Jan - Mon, 26 Jan

08:15 - 15:35

LHR

PHL

12h 20m1 stop

21:25 - 14:50

PHL

LHR

12h 25m1 stop

£532American Airlines

Mon, 29 Dec - Mon, 12 Jan

08:40 - 15:35

LCY

PHL

11h 55m1 stop

21:25 - 12:40

PHL

LCY

10h 15m1 stop

£532Multiple Airlines

Thu, 5 Feb - Mon, 9 Feb

18:05 - 12:05

LHR

PHL

23h 00m1 stop

21:05 - 10:05

PHL

LHR

32h 00m1 stop

£532American Airlines

Fri, 12 Jun - Sun, 28 Jun

19:15 - 14:05

LCY

PHL

23h 50m2 stops

19:55 - 14:35

PHL

LCY

13h 40m1 stop

£532Iberia

Mon, 12 Jan - Mon, 19 Jan

09:20 - 19:25

LHR

PHL

14h 05m1 stop

18:25 - 17:45

PHL

LHR

18h 20m2 stops

£536Multiple Airlines

Tue, 17 Mar - Tue, 7 Apr

17:05 - 15:35

LCY

PHL

27h 30m1 stop

21:25 - 12:40

PHL

LCY

10h 15m1 stop

£543British Airways

Wed, 7 Jan - Thu, 15 Jan

18:40 - 21:36

LGW

PHL

31h 56m2 stops

13:10 - 17:50

PHL

LGW

23h 40m2 stops

£560SWISS

Tue, 13 Jan - Tue, 20 Jan

Air Canada flights from London to Delaware

Our best Air Canada deals on London to Delaware flight tickets

Air Canada

12 Jan

LHR13:25London Heathrow

38h 21m

2 stops

PHL22:46Philadelphia

26 Jan

PHL16:35Philadelphia

15h 25m

2 stops

LHR13:00London Heathrow

£530

Find similar

Air Canada

22 Jan

LHR09:00London Heathrow

18h 46m

2 stops

PHL22:46Philadelphia

26 Jan

PHL15:30Philadelphia

10h 40m

1 stop

LHR07:10London Heathrow

£533

Find similar

Air Canada

6 Feb

LHR13:25London Heathrow

30h 59m

2 stops

PHL15:24Philadelphia

16 Feb

PHL15:30Philadelphia

10h 40m

1 stop

LHR07:10London Heathrow

£535

Find similar

Iberia flights from London to Delaware

Our best Iberia deals on London to Delaware flight tickets

Iberia

13 Jan

LCY19:15London City

23h 50m

2 stops

PHL14:05Philadelphia

27 Jan

PHL19:55Philadelphia

13h 10m

1 stop

LCY14:05London City

£531

Find similar

Iberia

12 Jan

LCY19:15London City

23h 50m

2 stops

PHL14:05Philadelphia

19 Jan

PHL19:55Philadelphia

13h 40m

1 stop

LCY14:35London City

£532

Find similar

Iberia

15 Jan

LGW11:45London Gatwick

32h 55m

1 stop

PHL15:40Philadelphia

30 Jan

PHL16:44Philadelphia

21h 16m

2 stops

LGW19:00London Gatwick

£544

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 12/1

13:25-22:46

2 stops38h 21m

Philadelphia

Mon 19/1

16:35-13:00

2 stops15h 25m

£530

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Tue 13/1

19:15-14:05

2 stops23h 50m

Philadelphia

Tue 27/1

19:55-14:05

1 stop13h 10m

£531

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 19/1

17:10-21:36

2 stops33h 26m

Philadelphia

Mon 26/1

13:10-11:15

2 stops17h 05m

£531

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 29/12

08:15-15:35

1 stop12h 20m

Philadelphia

Mon 12/1

21:25-14:50

1 stop12h 25m

£532

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Thu 5/2

08:40-15:35

1 stop11h 55m

Philadelphia

Mon 9/2

21:25-12:40

1 stop10h 15m

£532

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 12/6

18:05-12:05

1 stop23h 00m

Philadelphia

Sun 28/6

21:05-10:05

1 stop32h 00m

£532

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Mon 12/1

19:15-14:05

2 stops23h 50m

Philadelphia

Mon 19/1

19:55-14:35

1 stop13h 40m

£532

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 17/3

09:20-19:25

1 stop14h 05m

Philadelphia

Tue 7/4

18:25-17:45

2 stops18h 20m

£536

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Wed 7/1

17:05-15:35

1 stop27h 30m

Philadelphia

Thu 15/1

21:25-12:40

1 stop10h 15m

£543

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Tue 13/1

18:40-21:36

2 stops31h 56m

Philadelphia

Tue 20/1

13:10-17:50

2 stops23h 40m

£560

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 month to fly to Delaware?

In general, February is the cheapest month to fly from London to Delaware. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £488. If you’re not able to fly to Delaware in February, then September is your next best option. Flight prices from London to Delaware during September average around £499.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as £599. 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 to Delaware for around £648.

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 afternoon. Flights from London to Delaware during this time can be as low as £500. In contrast, the most expensive time of day to depart to Delaware is in the morning when prices are around £625.

How far in advance should I book a flight 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 £566 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 £513 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 55m
Direct flights	Every day
Airports in Delaware	17 airports

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

Direct flights go from London to Delaware every day.

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

Search flight deals

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 December 2025, 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.