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

JetBlue is the most popular carrier operating from London Heathrow to Delaware

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

As of December 2025, 58 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 17% of weekly flights taking off on this day.

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 December 2025.

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.

£286 Cheap Flights from London Heathrow Airport to Delaware in 2025/26

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Find the cheapest flights from London Heathrow Airport to Delaware

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One-way

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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

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

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

09:00 - 22:46

LHR

PHL

18h 46m2 stops

15:30 - 07:10

PHL

LHR

10h 40m1 stop

£533Air Canada

Thu, 22 Jan - Mon, 26 Jan

08:15 - 15:35

LHR

PHL

12h 20m1 stop

18:35 - 06:35

PHL

LHR

7h 00mdirect

£535American Airlines

Mon, 29 Dec - Mon, 12 Jan

13:25 - 15:24

LHR

PHL

30h 59m2 stops

15:30 - 07:10

PHL

LHR

10h 40m1 stop

£535Air Canada

Fri, 6 Feb - Mon, 16 Feb

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

20:35 - 15:00

LHR

PHL

23h 25m1 stop

18:35 - 11:15

PHL

LHR

11h 40m1 stop

£537American Airlines

Sun, 14 Jun - Fri, 26 Jun

13:25 - 15:24

LHR

PHL

30h 59m2 stops

12:55 - 08:30

PHL

LHR

14h 35m2 stops

£538Air Canada

Thu, 12 Feb - Thu, 26 Feb

Air Canada flights from London Heathrow Airport to Delaware

Our best Air Canada deals on London Heathrow Airport 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

American Airlines flights from London Heathrow Airport to Delaware

Our best American Airlines deals on London Heathrow Airport to Delaware flight tickets

American Airlines

29 Dec

LHR08:15London Heathrow

12h 20m

1 stop

PHL15:35Philadelphia

12 Jan

PHL21:25Philadelphia

12h 25m

1 stop

LHR14:50London Heathrow

£532

Find similar

American Airlines

12 Jun

LHR18:05London Heathrow

23h 00m

1 stop

PHL12:05Philadelphia

28 Jun

PHL21:05Philadelphia

32h 00m

1 stop

LHR10:05London Heathrow

£532

Find similar

American Airlines

29 Dec

LHR08:15London Heathrow

12h 20m

1 stop

PHL15:35Philadelphia

12 Jan

PHL18:35Philadelphia

7h 00m

LHR06:35London Heathrow

£535

Find similar

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

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

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

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

LHR - PHL

LHRPHL

London Heathrow

Thu 22/1

09:00-22:46

2 stops18h 46m

Philadelphia

Mon 26/1

15:30-07:10

1 stop10h 40m

£533

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 29/12

08:15-15:35

1 stop12h 20m

Philadelphia

Mon 12/1

18:35-06:35

Nonstop7h 00m

£535

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 6/2

13:25-15:24

2 stops30h 59m

Philadelphia

Mon 16/2

15:30-07:10

1 stop10h 40m

£535

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

LHR - PHL

LHRPHL

London Heathrow

Sun 14/6

20:35-15:00

1 stop23h 25m

Philadelphia

Fri 26/6

18:35-11:15

1 stop11h 40m

£537

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 12/2

13:25-15:24

2 stops30h 59m

Philadelphia

Thu 26/2

12:55-08:30

2 stops14h 35m

£538

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 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 £474. If you’re not able to fly to Delaware in March, then February is your next best option. Flight prices from London Heathrow Airport to Delaware during February 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 Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport for as low as £513 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 55m
Direct flights	Every day
Airports in Delaware	17 airports

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

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).

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?
There are 9 operators available for flights from London Heathrow Airport to Delaware as of December 2025.
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.