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Cheap flights from London to Delaware from £217

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Delaware departing on 5/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from London to Delaware

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
09:20 - 22:36
LHR
-
PHL
18h 16m
1 stop
JetBlue Logo
06:00 - 06:55
PHL
-
LHR
20h 55m
1 stop
£431JetBlue
Fri, 6 Mar - Sun, 15 Mar
British Airways Logo
13:45 - 16:40
LHR
-
PHL
7h 55mdirect
British Airways Logo
18:45 - 06:50
PHL
-
LHR
7h 05mdirect
£438British Airways
Wed, 15 Apr - Sun, 19 Apr
JetBlue Logo
09:20 - 07:58
LHR
-
PHL
26h 38m
1 stop
JetBlue Logo
06:00 - 06:55
PHL
-
LHR
20h 55m
1 stop
£441JetBlue
Thu, 12 Mar - Thu, 19 Mar
Multiple Airlines Logo
14:00 - 18:51
LGW
-
PHL
32h 51m
1 stop
Multiple Airlines Logo
05:00 - 10:00
PHL
-
LGW
25h 00m
1 stop
£441Multiple Airlines
Mon, 9 Mar - Mon, 16 Mar
Multiple Airlines Logo
14:00 - 23:16
LGW
-
PHL
14h 16m
1 stop
Multiple Airlines Logo
06:00 - 10:00
PHL
-
LGW
24h 00m
1 stop
£443Multiple Airlines
Fri, 6 Mar - Mon, 16 Mar
Multiple Airlines Logo
06:30 - 17:00
STN
-
PHL
14h 30m
1 stop
Multiple Airlines Logo
20:25 - 16:50
PHL
-
STN
15h 25m
1 stop
£445Multiple Airlines
Thu, 26 Mar - Sun, 29 Mar
JetBlue Logo
09:20 - 22:07
LHR
-
PHL
17h 47m
1 stop
JetBlue Logo
15:02 - 06:55
PHL
-
LHR
10h 53m
1 stop
£447JetBlue
Thu, 19 Feb - Wed, 4 Mar
JetBlue Logo
09:20 - 14:07
LHR
-
PHL
32h 47m
1 stop
JetBlue Logo
20:20 - 06:55
PHL
-
LHR
30h 35m
1 stop
£449JetBlue
Mon, 9 Mar - Mon, 16 Mar
JetBlue Logo
09:20 - 22:36
LHR
-
PHL
18h 16m
1 stop
JetBlue Logo
06:00 - 06:55
PHL
-
LHR
19h 55m
1 stop
£450JetBlue
Wed, 25 Feb - Sat, 7 Mar
United Airlines Logo
18:00 - 14:49
LHR
-
PHL
25h 49m
1 stop
United Airlines Logo
18:40 - 16:50
PHL
-
LHR
18h 10m
1 stop
£453United Airlines
Sat, 7 Mar - Sun, 8 Mar

United Airlines flights from London to Delaware

Our best United Airlines deals on London to Delaware flight tickets
United Airlines
7 Mar
LHR18:00London Heathrow
25h 49m
1 stop
PHL14:49Philadelphia
8 Mar
PHL18:40Philadelphia
18h 10m
1 stop
LHR16:50London Heathrow
£453
United Airlines
18 Mar
LHR06:30London Heathrow
18h 39m
2 stops
PHL21:09Philadelphia
24 Mar
PHL07:25Philadelphia
33h 10m
2 stops
LHR20:35London Heathrow
£481
United Airlines
21 Apr
LHR07:30London Heathrow
13h 35m
1 stop
PHL16:05Philadelphia
27 Apr
PHL09:15Philadelphia
30h 45m
2 stops
LHR21:00London Heathrow
£488

JetBlue flights from London to Delaware

Our best JetBlue deals on London to Delaware flight tickets
JetBlue
6 Mar
LHR09:20London Heathrow
18h 16m
1 stop
PHL22:36Philadelphia
15 Mar
PHL06:00Philadelphia
20h 55m
1 stop
LHR06:55London Heathrow
£431
JetBlue
12 Mar
LHR09:20London Heathrow
26h 38m
1 stop
PHL07:58Philadelphia
19 Mar
PHL06:00Philadelphia
20h 55m
1 stop
LHR06:55London Heathrow
£441
JetBlue
19 Feb
LHR09:20London Heathrow
17h 47m
1 stop
PHL22:07Philadelphia
4 Mar
PHL15:02Philadelphia
10h 53m
1 stop
LHR06:55London Heathrow
£447

momondo Fare Finder

 
Customise your flight search to find flights from London to Delaware that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 8 February 2026.
Use the filters below to find and compare flights from London to Delaware that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 6/3

09:20-22:36

1 stop18h 16m

Philadelphia

Sun 15/3

06:00-06:55

1 stop20h 55m

£431

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 15/4

13:45-16:40

Nonstop7h 55m

Philadelphia

Sun 19/4

18:45-06:50

Nonstop7h 05m

£438

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 12/3

09:20-07:58

1 stop26h 38m

Philadelphia

Thu 19/3

06:00-06:55

1 stop20h 55m

£441

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 9/3

14:00-18:51

1 stop32h 51m

Philadelphia

Mon 16/3

05:00-10:00

1 stop25h 00m

£441

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Fri 6/3

14:00-23:16

1 stop14h 16m

Philadelphia

Mon 16/3

06:00-10:00

1 stop24h 00m

£443

LondonPhiladelphia

STN - PHL

STNPHL

London Stansted

Thu 26/3

06:30-17:00

1 stop14h 30m

Philadelphia

Sun 29/3

20:25-16:50

1 stop15h 25m

£445

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 19/2

09:20-22:07

1 stop17h 47m

Philadelphia

Wed 4/3

15:02-06:55

1 stop10h 53m

£447

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 9/3

09:20-14:07

1 stop32h 47m

Philadelphia

Mon 16/3

20:20-06:55

1 stop30h 35m

£449

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 25/2

09:20-22:36

1 stop18h 16m

Philadelphia

Sat 7/3

06:00-06:55

1 stop19h 55m

£450

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 7/3

18:00-14:49

1 stop25h 49m

Philadelphia

Sun 8/3

18:40-16:50

1 stop18h 10m

£453

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Delaware from

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

What is the cheapest month to fly to Delaware?

In general, January 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 £472. If you’re not able to fly to Delaware in January, then February is your next best option. Flight prices from London to Delaware during February average around £483.

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 £595. 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 £651.

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 £614. In contrast, the most expensive time of day to depart to Delaware is in the morning when prices are around £616.

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 £552 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 £499 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).
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?

  • 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.

An easier way to manage your Delaware trip

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