Cheap flights from London to Delaware

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 54 days in advance, which can save you up to 38% on flights from London to Delaware compared to booking the week you need them. Waiting 54 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £411. For sooner than that we have options available in the next 3 days from £504.

What is the cheapest month to fly from London to Delaware?

Flights from London to Delaware lean towards being more expensive in July. Prices are generally better when you fly from London to Delaware in February, with the cheapest ticket starting at £281.

When is the cheapest time to fly from London to Delaware (LON - DE)?

When flying from London to Delaware, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from London to Delaware in January, February 2022

The best prices found for LON to Delaware flights in January, February
21 Feb - 22 Mar
LHR

London Heathrow

PHL

Philadelphia

1 stop

11h 30m
PHL

Philadelphia

LHR

London Heathrow

Nonstop

7h 05m
£330

British Airways

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Deal found 1/20/22

16 Feb - 16 Mar
LHR

London Heathrow

PHL

Philadelphia

1 stop

11h 30m
PHL

Philadelphia

LHR

London Heathrow

Nonstop

7h 05m
£332

British Airways

View Deal

Deal found 1/19/22

21 Feb - 22 Mar
LHR

London Heathrow

PHL

Philadelphia

1 stop

11h 30m
PHL

Philadelphia

LHR

London Heathrow

1 stop

12h 00m
£341

British Airways

View Deal

Deal found 1/20/22

London to Delaware 2022 flight deals

Cheap flights to Delaware from London found for this year
4 May - 24 May
LTN

London Luton

PHL

Philadelphia

1 stop

18h 00m
PHL

Philadelphia

LTN

London Luton

1 stop

10h 35m
£326

Multiple Airlines

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Deal found 1/18/22

4 May - 24 May
LGW

London Gatwick

PHL

Philadelphia

1 stop

11h 20m
PHL

Philadelphia

LGW

London Gatwick

1 stop

14h 55m
£327

Multiple Airlines

View Deal

Deal found 1/18/22

14 Mar - 27 Mar
LHR

London Heathrow

PHL

Philadelphia

2 stops

30h 10m
PHL

Philadelphia

LHR

London Heathrow

1 stop

34h 14m
£328

Virgin Atlantic

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Deal found 1/19/22

Direct flights to Delaware from London

Save time with London to Delaware direct flight deals
16 Feb - 16 Mar
LHR

London Heathrow

PHL

Philadelphia

Nonstop

8h 30m
PHL

Philadelphia

LHR

London Heathrow

Nonstop

7h 10m
£357

Finnair

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Deal found 1/19/22

21 Feb - 22 Mar
LHR

London Heathrow

PHL

Philadelphia

Nonstop

8h 30m
PHL

Philadelphia

LHR

London Heathrow

Nonstop

7h 10m
£358

Finnair

View Deal

Deal found 1/20/22

16 Feb - 16 Mar
LHR

London Heathrow

PHL

Philadelphia

Nonstop

8h 10m
PHL

Philadelphia

LHR

London Heathrow

Nonstop

7h 10m
£376

Finnair

View Deal

Deal found 1/18/22

Last-minute flights from London to Delaware

Late deals on return flights to Delaware from London, departing today and this week
27 Jan - 3 Feb
LGW

London Gatwick

PHL

Philadelphia

2 stops

31h 43m
PHL

Philadelphia

LGW

London Gatwick

2 stops

29h 20m
£417

Multiple Airlines

View Deal

Deal found 1/20/22

25 Jan - 29 Jan
LHR

London Heathrow

PHL

Philadelphia

1 stop

26h 50m
PHL

Philadelphia

LHR

London Heathrow

1 stop

18h 00m
£433

Finnair

View Deal

Deal found 1/20/22

29 Jan - 9 Feb
LHR

London Heathrow

PHL

Philadelphia

1 stop

23h 40m
PHL

Philadelphia

LHR

London Heathrow

1 stop

10h 03m
£438

Finnair

View Deal

Deal found 1/19/22

One-way flights to Delaware from London

The cheapest one-way flights from London to Delaware
22 Mar
STN

London Stansted

PHL

Philadelphia

3 stops

33h 41m
£272

Multiple Airlines

View Deal

Deal found 1/20/22

30 Jan
STN

London Stansted

PHL

Philadelphia

3 stops

42h 58m
£274

Multiple Airlines

View Deal

Deal found 1/18/22

20 Feb
STN

London Stansted

PHL

Philadelphia

3 stops

42h 56m
£277

Multiple Airlines

View Deal

Deal found 1/20/22

Related info for your journey

Useful info, stats and facts about London to Delaware flights.

Which airlines flying from London to Delaware have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like British Airways, Finnair, and American Airlines flying from London to Delaware have implemented new flexible cancellation policies.

Can I find flights from London to Delaware for under £400 on Cheapflights?

Yes, there are multiple flights from London to Delaware for under £400. The cheapest flight booked recently is on Multiple Airlines for just £326, but on average you can expect to pay £338.

Are there direct flights from London to Delaware for under £400 on Cheapflights?

Cheapflights has 20 direct flights from London to Delaware under £400. A good price for a direct flight from London to Delaware is less than £385.

Are there last-minute flights available from London to Delaware for under £500?

There are currently 20+ open flights from London to Delaware within the next 7 days for less than £500.

What are the most popular routes from London to Delaware?

The most popular route from London to Delaware is London Heathrow - Philadelphia. You may also consider London Gatwick - Philadelphia or London City - Philadelphia.

Can I fly to Delaware from London right now?

Information is based on travel restrictions from London to Delaware

Most visitors from London need to provide a negative COVID-19 test result and/or quarantine to enter Delaware.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Delaware.

Quarantine requirements
Visitors from London are not required to quarantine after entering Delaware.

Can I fly back to London from Delaware?

Returning to London from Delaware

COVID-19 testing requirements
Visitors from Delaware must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 48 hours before departing to London.

Quarantine requirements
Visitors from Delaware are not required to quarantine after entering London.