Which airlines fly to London?

Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to London from Islip, New York according to our data. Virgin Atlantic is the first choice among our users, with 41% of people opting to fly with this airline when travelling to London. Keep in mind that there are 13 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Islip Long Island Airport to London?

Prices for flights from Islip Long Island Airport to London are updated daily.

How old do you have to be to fly from Islip Long Island Airport to London?

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 Islip Long Island Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£236 Cheap Flights from Islip to London in 2025/26

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Find the cheapest flights from Islip, New York to London

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

19:43 - 10:00

ISP

LGW

33h 17m1 stop

14:00 - 07:38

LGW

ISP

22h 38m1 stop

£523Multiple Airlines

Thu, 5 Feb - Thu, 12 Feb

19:26 - 10:00

ISP

LGW

33h 34m2 stops

14:00 - 07:38

LGW

ISP

22h 38m1 stop

£525Multiple Airlines

Thu, 5 Feb - Thu, 12 Feb

19:26 - 10:00

ISP

LGW

33h 34m2 stops

14:00 - 07:38

LGW

ISP

22h 38m1 stop

£532Multiple Airlines

Thu, 29 Jan - Thu, 12 Feb

19:58 - 10:00

ISP

LGW

33h 02m1 stop

11:40 - 18:48

LGW

ISP

36h 08m2 stops

£545Multiple Airlines

Sun, 18 Jan - Wed, 28 Jan

19:43 - 10:00

ISP

LGW

33h 17m1 stop

14:00 - 07:38

LGW

ISP

22h 38m1 stop

£553Multiple Airlines

Thu, 29 Jan - Thu, 12 Feb

12:30 - 10:55

ISP

LGW

17h 25m2 stops

14:00 - 10:46

LGW

ISP

25h 46m1 stop

£811Multiple Airlines

Fri, 6 Feb - Fri, 13 Feb

12:30 - 06:55

ISP

LHR

13h 25m1 stop

06:00 - 19:45

LHR

ISP

18h 45m2 stops

£1,127Multiple Airlines

Thu, 29 Jan - Thu, 12 Feb

12:30 - 11:25

ISP

LHR

17h 55m2 stops

09:20 - 16:10

LHR

ISP

11h 50m1 stop

£1,129Multiple Airlines

Fri, 6 Feb - Fri, 13 Feb

12:30 - 06:55

ISP

LHR

13h 25m1 stop

19:55 - 19:45

LHR

ISP

28h 50m2 stops

£1,194Multiple Airlines

Thu, 5 Feb - Thu, 12 Feb

10:00 - 21:55

ISP

LHR

30h 55m2 stops

06:30 - 08:40

LHR

ISP

31h 10m2 stops

£1,340Multiple Airlines

Thu, 29 Jan - Thu, 12 Feb

Fly from

Fly to

Route

Depart

Return

Price

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 5/2

19:43-10:00

1 stop33h 17m

London Gatwick

Thu 12/2

14:00-07:38

1 stop22h 38m

£523

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 5/2

19:26-10:00

2 stops33h 34m

London Gatwick

Thu 12/2

14:00-07:38

1 stop22h 38m

£525

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 29/1

19:26-10:00

2 stops33h 34m

London Gatwick

Thu 12/2

14:00-07:38

1 stop22h 38m

£532

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 18/1

19:58-10:00

1 stop33h 02m

London Gatwick

Wed 28/1

11:40-18:48

2 stops36h 08m

£545

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 29/1

19:43-10:00

1 stop33h 17m

London Gatwick

Thu 12/2

14:00-07:38

1 stop22h 38m

£553

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 6/2

12:30-10:55

2 stops17h 25m

London Gatwick

Fri 13/2

14:00-10:46

1 stop25h 46m

£811

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 29/1

12:30-06:55

1 stop13h 25m

London Heathrow

Thu 12/2

06:00-19:45

2 stops18h 45m

£1,127

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 6/2

12:30-11:25

2 stops17h 55m

London Heathrow

Fri 13/2

09:20-16:10

1 stop11h 50m

£1,129

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 5/2

12:30-06:55

1 stop13h 25m

London Heathrow

Thu 12/2

19:55-19:45

2 stops28h 50m

£1,194

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 29/1

10:00-21:55

2 stops30h 55m

London Heathrow

Thu 12/2

06:30-08:40

2 stops31h 10m

£1,340

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to London

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

What is the cheapest day to depart on your flight to London?

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £411. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Islip, New York to London for around £461.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £418. Flights at midday are often more expensive, with an average ticket price of £499.

When to book flights from Islip, New York to London

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Islip, New York to London (ISP to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to London

Fastest flight time	13h 25m
Direct flights	None

The fastest flight from Islip, New York to London takes 13h 25m

There are no direct flights from Islip, New York to London. There are no popular flight routes from Islip, New York to London.

Search flight deals

How far is Islip Long Island to London by plane?
The straight-line distance from Islip Long Island to London is 3425.8 mi. 13h 25m is a normal flight duration for this route.
When did momondo last update prices for flights from Islip Long Island Airport to London?
Prices for flights from Islip Long Island Airport to London are updated daily.
How old do you have to be to fly from Islip Long Island Airport to London?
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 Islip Long Island Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Hayes

Chelmsford

Dover

Worthing

Bedford

Colchester

Hounslow

Ramsgate

Romford

Why use momondo?

Why should I use momondo to find a flight deal from Islip to London?

It is quick and easy to find Islip to London 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 London that suits you.

Can I find flights from Islip to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Islip with this policy.

How can momondo help me find flights from Islip to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Islip.

I’m not ready to book a flight from Islip to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Islip. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.