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Cheap flights from London Heathrow Airport to Delaware from £301

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 Heathrow Airport to Delaware departing on 16/11. 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 Heathrow Airport to Delaware

Cheap return flights

JetBlue Logo
08:25 - 09:40LHR-PHL
30h 15m1 stop
JetBlue Logo
10:20 - 06:30PHL-LHR
15h 10m1 stop
£418JetBlue
Find Deal
Wed, 27 Aug - Tue, 16 Sep
JetBlue Logo
08:25 - 15:00LHR-PHL
11h 35m1 stop
JetBlue Logo
18:10 - 06:30PHL-LHR
31h 20m1 stop
£425JetBlue
Find Deal
Mon, 8 Sep - Mon, 15 Sep
JetBlue Logo
08:25 - 09:40LHR-PHL
30h 15m1 stop
JetBlue Logo
10:20 - 06:30PHL-LHR
15h 10m1 stop
£428JetBlue
Find Deal
Mon, 1 Sep - Tue, 16 Sep
Lufthansa Logo
09:30 - 16:00LHR-PHL
11h 30m1 stop
Lufthansa Logo
17:35 - 09:40PHL-LHR
11h 05m1 stop
£430Lufthansa
Find Deal
Mon, 8 Sep - Mon, 15 Sep
SWISS Logo
18:40 - 16:00LHR-PHL
26h 20m2 stops
SWISS Logo
17:35 - 13:00PHL-LHR
14h 25m2 stops
£441SWISS
Find Deal
Mon, 8 Sep - Mon, 15 Sep
Aer Lingus Logo
13:25 - 19:00LHR-PHL
10h 35m1 stop
Aer Lingus Logo
20:30 - 11:10PHL-LHR
9h 40m1 stop
£443Aer Lingus
Find Deal
Mon, 1 Sep - Wed, 10 Sep
Icelandair Logo
09:20 - 08:36LHR-PHL
28h 16m1 stop
Icelandair Logo
06:00 - 06:55PHL-LHR
19h 55m1 stop
£444Icelandair
Find Deal
Tue, 18 Nov - Thu, 27 Nov
Lufthansa Logo
19:10 - 16:00LHR-PHL
25h 50m2 stops
Lufthansa Logo
15:25 - 21:00PHL-LHR
48h 35m2 stops
£450Lufthansa
Find Deal
Thu, 11 Sep - Sat, 13 Sep
Icelandair Logo
08:25 - 09:22LHR-PHL
29h 57m1 stop
Icelandair Logo
18:10 - 06:30PHL-LHR
31h 20m1 stop
£453Icelandair
Find Deal
Wed, 10 Sep - Sat, 13 Sep
SWISS Logo
20:05 - 16:00LHR-PHL
24h 55m2 stops
SWISS Logo
17:35 - 11:25PHL-LHR
12h 50m2 stops
£466SWISS
Find Deal
Mon, 8 Sep - Mon, 15 Sep

United Airlines flights from London Heathrow Airport to Delaware

Our best United Airlines deals on London Heathrow Airport to Delaware flight tickets
United Airlines
27 Nov
LHR08:30London Heathrow
12h 30m
1 stop
PHL16:00Philadelphia
4 Dec
PHL20:05Philadelphia
9h 45m
1 stop
LHR10:50London Heathrow
£475
Find similar
United Airlines
27 Nov
LHR08:30London Heathrow
12h 30m
1 stop
PHL16:00Philadelphia
4 Dec
PHL10:33Philadelphia
15h 07m
1 stop
LHR06:40London Heathrow
£476
Find similar
United Airlines
14 Sept
LHR07:25London Heathrow
19h 06m
2 stops
PHL21:31Philadelphia
21 Sept
PHL10:30Philadelphia
15h 25m
1 stop
LHR06:55London Heathrow
£478
Find similar

JetBlue flights from London Heathrow Airport to Delaware

Our best JetBlue deals on London Heathrow Airport to Delaware flight tickets
JetBlue
27 Aug
LHR08:25London Heathrow
30h 15m
1 stop
PHL09:40Philadelphia
16 Sept
PHL10:20Philadelphia
15h 10m
1 stop
LHR06:30London Heathrow
£418
Find similar
JetBlue
8 Sept
LHR08:25London Heathrow
11h 35m
1 stop
PHL15:00Philadelphia
15 Sept
PHL18:10Philadelphia
31h 20m
1 stop
LHR06:30London Heathrow
£425
Find similar
JetBlue
1 Sept
LHR08:25London Heathrow
30h 15m
1 stop
PHL09:40Philadelphia
16 Sept
PHL10:20Philadelphia
15h 10m
1 stop
LHR06:30London Heathrow
£428
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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 1 August 2025.
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

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 27/8

08:25-09:40

1 stop30h 15m

Philadelphia

Tue 16/9

10:20-06:30

1 stop15h 10m

£418

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 8/9

08:25-15:00

1 stop11h 35m

Philadelphia

Mon 15/9

18:10-06:30

1 stop31h 20m

£425

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/9

08:25-09:40

1 stop30h 15m

Philadelphia

Tue 16/9

10:20-06:30

1 stop15h 10m

£428

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 8/9

09:30-16:00

1 stop11h 30m

Philadelphia

Mon 15/9

17:35-09:40

1 stop11h 05m

£430

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 8/9

18:40-16:00

2 stops26h 20m

Philadelphia

Mon 15/9

17:35-13:00

2 stops14h 25m

£441

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/9

13:25-19:00

1 stop10h 35m

Philadelphia

Wed 10/9

20:30-11:10

1 stop9h 40m

£443

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 18/11

09:20-08:36

1 stop28h 16m

Philadelphia

Thu 27/11

06:00-06:55

1 stop19h 55m

£444

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 11/9

19:10-16:00

2 stops25h 50m

Philadelphia

Sat 13/9

15:25-21:00

2 stops48h 35m

£450

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 10/9

08:25-09:22

1 stop29h 57m

Philadelphia

Sat 13/9

18:10-06:30

1 stop31h 20m

£453

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 8/9

20:05-16:00

2 stops24h 55m

Philadelphia

Mon 15/9

17:35-11:25

2 stops12h 50m

£466

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 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

What is the cheapest month to fly to Delaware?

In general, March is the cheapest month to fly from London Heathrow Airport to Delaware. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £480. If you’re not able to fly to Delaware in March, then September is your next best option. Flight prices from London Heathrow Airport to Delaware during September average around £506.

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 £609. 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 £669.

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 Heathrow Airport to Delaware during this time can be as low as £506. In contrast, the most expensive time of day to depart to Delaware is at midday when prices are around £642.

How far in advance should I book a flight 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 £569 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

Best price found

£301

Fastest flight time

10h 35m

Direct flights

Every day

Airports in Delaware

1 airport
The best one-way flight to Delaware from London Heathrow Airport in the past 72 hours is £301. The best return flight deal from London Heathrow Airport to Delaware found on momondo in the last 72 hours is £418.
The fastest flight from London Heathrow Airport to Delaware takes 10h 35m
Direct flights go from London Heathrow Airport to Delaware every day.
There is 1 airport near Delaware: Philadelphia (PHL)
Search flight deals

  • 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?

  • 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.

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