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

Prices for flights from London to Islip Long Island Airport are refreshed on a daily basis.

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

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 London to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The required travel and health documents for your Islip Long Island Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Islip Long Island Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£1,152 Cheap Flights from London to Islip, New York in 2026

Find the cheapest flights from London to New York

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 19:45LHR London Heathrow-ISP Islip Long Island

18h 45m2 stops Vienna Intl Boston Logan Intl

12:30 - 06:50ISP Islip Long Island-LHR London Heathrow

14h 20m1 stop Boston Logan Intl

£1,152Multiple Airlines

Fri, 23 Oct - Fri, 30 Oct

09:50 - 19:45LHR London Heathrow-ISP Islip Long Island

14h 55m2 stops Dublin Boston Logan Intl

12:30 - 08:05ISP Islip Long Island-LHR London Heathrow

15h 35m2 stops Boston Logan Intl Dublin

£3,299Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

20:10 - 11:05LHR London Heathrow-ISP Islip Long Island

19h 55m1 stop Boston Logan Intl

12:30 - 08:05ISP Islip Long Island-LHR London Heathrow

15h 35m2 stops Boston Logan Intl Dublin

£3,329Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

09:50 - 19:45LHR London Heathrow-ISP Islip Long Island

14h 55m2 stops Dublin Boston Logan Intl

12:30 - 08:05ISP Islip Long Island-LHR London Heathrow

15h 35m2 stops Boston Logan Intl Dublin

£3,360Multiple Airlines

Fri, 23 Oct - Fri, 30 Oct

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonIslip

LHR London Heathrow - ISP Islip Long Island

LHRISP

London Heathrow

Fri 23/10

06:00-19:45

2 stops18h 45m

Islip Long Island

Fri 30/10

12:30-06:50

1 stop14h 20m

£1,152

Fastest return journey

LondonIslip

LHR London Heathrow - ISP Islip Long Island

LHRISP

London Heathrow

Tue 20/10

09:50-19:45

2 stops14h 55m

Islip Long Island

Tue 27/10

12:30-08:05

2 stops15h 35m

£3,299

LondonIslip

LHR London Heathrow - ISP Islip Long Island

LHRISP

London Heathrow

Tue 20/10

20:10-11:05

1 stop19h 55m

Islip Long Island

Tue 27/10

12:30-08:05

2 stops15h 35m

£3,329

LondonIslip

LHR London Heathrow - ISP Islip Long Island

LHRISP

London Heathrow

Fri 23/10

09:50-19:45

2 stops14h 55m

Islip Long Island

Fri 30/10

12:30-08:05

2 stops15h 35m

£3,360

Cheapest one-way

Fastest single journey

LondonIslip

LHR London Heathrow - ISP Islip Long Island

LHRISP

London Heathrow

Sun 4/10

13:05-23:40

2 stops15h 35m

£2,347

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

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

Which airlines fly to Islip, New York?

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to Islip, New York from London according to our data. Virgin Atlantic is the first choice among our users, with 48% of people opting to fly with this airline when travelling to Islip, New York. Keep in mind that there are 23 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When to book flights from London to Islip, New York

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

Estimated return price

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

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

Best price found	£2,347
Fastest flight time	18h 45m
Direct flights	None

The best one-way flight to Islip, New York from London in the past 72 hours is £2,347. The best return flight deal from London to Islip, New York found on momondo in the last 72 hours is £1,152.

The fastest flight from London to Islip, New York takes 18h 45m

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

Search flight deals

Frequently asked questions about flying from London to Islip, New York

How far is London to Islip Long Island by plane?
Islip Long Island is 3425.8 mi away from London. By plane, this route typically takes 18h 45m.
When did momondo last update prices for flights from London to Islip Long Island Airport?
Prices for flights from London to Islip Long Island Airport are refreshed on a daily basis.
How old do you have to be to fly from London to Islip Long Island Airport?
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 London to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The required travel and health documents for your Islip Long Island Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Islip Long Island Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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Why use momondo?

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

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

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

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

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

momondo helps you find the best flight between London and Islip by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for London to Islip flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.