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 refresh daily.

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

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 to Islip Long Island Airport.

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

The travel and health documents you'll need for your trip to Islip Long Island Airport 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 Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$548 Cheap Flights from London to Islip in 2025/26

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0 bags

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9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

12:40 pm - 12:40 pmISP-LHR

19h 00m2 stops

$2,309Multiple Airlines

Find Deal

Wed, Nov 19 - Sun, Nov 23

9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

12:40 pm - 5:30 pmISP-LHR

23h 50m2 stops

$2,343Multiple Airlines

Find Deal

Wed, Nov 19 - Mon, Nov 24

7:55 pm - 7:45 pmLHR-ISP

28h 50m2 stops

12:40 pm - 6:55 amISP-LHR

13h 15m1 stop

$2,501Multiple Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

12:40 pm - 12:40 pmISP-LHR

19h 00m2 stops

$3,024Multiple Airlines

Find Deal

Thu, Nov 20 - Sun, Nov 23

9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

12:40 pm - 6:55 amISP-LHR

13h 15m1 stop

$3,429Multiple Airlines

Find Deal

Wed, Nov 19 - Mon, Nov 24

9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

12:40 pm - 6:55 amISP-LHR

13h 15m1 stop

$3,772Multiple Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

Fly from

Fly to

Route

Depart

Return

Price

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Wed 11/19

9:20 am-4:15 pm

1 stop11h 55m

Islip Long Island

Sun 11/23

12:40 pm-12:40 pm

2 stops19h 00m

$2,309

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Wed 11/19

9:20 am-4:15 pm

1 stop11h 55m

Islip Long Island

Mon 11/24

12:40 pm-5:30 pm

2 stops23h 50m

$2,343

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 11/20

7:55 pm-7:45 pm

2 stops28h 50m

Islip Long Island

Mon 11/24

12:40 pm-6:55 am

1 stop13h 15m

$2,501

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 11/20

9:20 am-4:15 pm

1 stop11h 55m

Islip Long Island

Sun 11/23

12:40 pm-12:40 pm

2 stops19h 00m

$3,024

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Wed 11/19

9:20 am-4:15 pm

1 stop11h 55m

Islip Long Island

Mon 11/24

12:40 pm-6:55 am

1 stop13h 15m

$3,429

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 11/20

9:20 am-4:15 pm

1 stop11h 55m

Islip Long Island

Mon 11/24

12:40 pm-6:55 am

1 stop13h 15m

$3,772

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Tue 12/30

8:50 am-4:37 pm

2 stops36h 47m

$548

Flights are sorted by cheapest round-trip 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

What airlines fly to Islip, New York?

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to Islip, New York from London according to our data. British Airways is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 18 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 round-trip 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

Direct flights	None

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

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How far is London to Islip Long Island by plane?
A flight from London to Islip Long Island will travel around 3425.8 mi. By plane, this route typically takes 11h 55m.
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 refresh daily.
How old do you have to be to fly from London to Islip Long Island Airport?
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 to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents you'll need for your trip to Islip Long Island Airport 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 Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Islip for you.

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

Yes. momondo allows you to filter the results for London to Islip flights to just show those with flexible booking policies.

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

Once you have performed a search for London to Islip flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Islip from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.