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 43% 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.

£446 Cheap Flights from Islip to London in 2026

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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.

17:38 - 10:00

ISP

LGW

35h 22m

1 stop

13:00 - 10:05

LGW

ISP

26h 05m

2 stops

£688Multiple Airlines

Tue, 5 May - Tue, 12 May

17:38 - 10:00

ISP

LGW

35h 22m

1 stop

13:00 - 10:05

LGW

ISP

26h 05m

2 stops

£700Multiple Airlines

Tue, 5 May - Tue, 12 May

11:00 - 10:00

ISP

LGW

18h 00m

1 stop

14:00 - 10:05

LGW

ISP

25h 05m

1 stop

£759Multiple Airlines

Sat, 9 May - Sat, 16 May

11:00 - 10:00

ISP

LGW

18h 00m

1 stop

10:55 - 11:05

LGW

ISP

29h 10m

2 stops

£779Multiple Airlines

Sat, 9 May - Sat, 16 May

11:00 - 10:00

ISP

LGW

18h 00m

1 stop

14:00 - 10:05

LGW

ISP

25h 05m

1 stop

£802Multiple Airlines

Sat, 9 May - Sat, 16 May

11:00 - 10:00

ISP

LGW

18h 00m

1 stop

10:55 - 16:10

LGW

ISP

34h 15m

2 stops

£807Multiple Airlines

Sat, 9 May - Sat, 16 May

15:20 - 11:45

ISP

LGW

15h 25m

2 stops

15:40 - 22:05

LGW

ISP

35h 25m

2 stops

£895Multiple Airlines

Wed, 26 Aug - Wed, 2 Sep

18:40 - 15:00

ISP

LHR

39h 20m

2 stops

08:50 - 17:44

LHR

ISP

37h 54m

2 stops

£928Multiple Airlines

Tue, 5 May - Tue, 12 May

18:40 - 17:20

ISP

LHR

41h 40m

2 stops

07:40 - 17:44

LHR

ISP

39h 04m

2 stops

£954Multiple Airlines

Wed, 6 May - Wed, 13 May

09:59 - 06:45

ISP

LHR

15h 46m

1 stop

09:40 - 19:45

LHR

ISP

15h 05m

1 stop

£1,017Multiple Airlines

Tue, 5 May - Tue, 12 May

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Tue 5/5

17:38-10:00

1 stop35h 22m

London Gatwick

Tue 12/5

13:00-10:05

2 stops26h 05m

£688

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Tue 5/5

17:38-10:00

1 stop35h 22m

London Gatwick

Tue 12/5

13:00-10:05

2 stops26h 05m

£700

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 9/5

11:00-10:00

1 stop18h 00m

London Gatwick

Sat 16/5

14:00-10:05

1 stop25h 05m

£759

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 9/5

11:00-10:00

1 stop18h 00m

London Gatwick

Sat 16/5

10:55-11:05

2 stops29h 10m

£779

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 9/5

11:00-10:00

1 stop18h 00m

London Gatwick

Sat 16/5

14:00-10:05

1 stop25h 05m

£802

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 9/5

11:00-10:00

1 stop18h 00m

London Gatwick

Sat 16/5

10:55-16:10

2 stops34h 15m

£807

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Wed 26/8

15:20-11:45

2 stops15h 25m

London Gatwick

Wed 2/9

15:40-22:05

2 stops35h 25m

£895

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Tue 5/5

18:40-15:00

2 stops39h 20m

London Heathrow

Tue 12/5

08:50-17:44

2 stops37h 54m

£928

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Wed 6/5

18:40-17:20

2 stops41h 40m

London Heathrow

Wed 13/5

07:40-17:44

2 stops39h 04m

£954

Fastest return journey

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Tue 5/5

09:59-06:45

1 stop15h 46m

London Heathrow

Tue 12/5

09:40-19:45

1 stop15h 05m

£1,017

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 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 £401. 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 £453.

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 £412. Flights in the evening are often more expensive, with an average ticket price of £442.

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	15h 25m
Direct flights	None

The fastest flight from Islip, New York to London takes 15h 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. 15h 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

Ipswich

Wembley

Canterbury

Ilford

Guildford

Hayes

Chelmsford

Dover

Folkestone

Ramsgate

Chichester

Bedford

Worthing

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.

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Cheap flights from Islip, New York to London from £446

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to London departing on 2/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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

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

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

Which airlines fly to London?

When to book flights from Islip, New York to London

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

Direct flights

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favourite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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