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Flights to Islip Long Island

£1,145 Cheap flights to Islip, New York

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight to Islip, New York departing on 6/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from the United Kingdom to Islip, New York

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
08:50 - 20:15
LHR
-
ISP
16h 25m
2 stops
Multiple Airlines Logo
14:11 - 08:05
ISP
-
LHR
12h 54m
2 stops
£1,145Multiple Airlines
Mon, 6 Jul - Mon, 13 Jul
Multiple Airlines Logo
09:55 - 20:15
LHR
-
ISP
39h 20m
3 stops
Multiple Airlines Logo
10:00 - 07:55
ISP
-
LHR
16h 55m
2 stops
£1,451Multiple Airlines
Mon, 6 Jul - Mon, 13 Jul
Multiple Airlines Logo
13:05 - 23:35
LHR
-
ISP
15h 30m
2 stops
Multiple Airlines Logo
10:50 - 11:55
ISP
-
LHR
20h 05m
2 stops
£3,511Multiple Airlines
Thu, 25 Jun - Sun, 28 Jun
Multiple Airlines Logo
11:35 - 23:53
LHR
-
ISP
17h 18m
2 stops
Multiple Airlines Logo
11:31 - 09:50
ISP
-
LHR
17h 19m
2 stops
£4,645Multiple Airlines
Fri, 24 Jul - Mon, 27 Jul
Multiple Airlines Logo
10:05 - 18:35
LHR
-
ISP
13h 30m
1 stop
Multiple Airlines Logo
10:00 - 07:10
ISP
-
LHR
16h 10m
1 stop
£17,964Multiple Airlines
Fri, 24 Jul - Mon, 27 Jul

momondo Fare Finder

 
Locate flights to Islip Long Island that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 11 June 2026.
Use the filters below to find and compare flights to Islip, New York that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Mon 6/7

08:50-20:15

2 stops16h 25m

Islip Long Island

Mon 13/7

14:11-08:05

2 stops12h 54m

£1,145

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Mon 6/7

09:55-20:15

3 stops39h 20m

Islip Long Island

Mon 13/7

10:00-07:55

2 stops16h 55m

£1,451

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 25/6

13:05-23:35

2 stops15h 30m

Islip Long Island

Sun 28/6

10:50-11:55

2 stops20h 05m

£3,511

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Fri 24/7

11:35-23:53

2 stops17h 18m

Islip Long Island

Mon 27/7

11:31-09:50

2 stops17h 19m

£4,645

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Fri 24/7

10:05-18:35

1 stop13h 30m

Islip Long Island

Mon 27/7

10:00-07:10

1 stop16h 10m

£17,964
Cheapest one-way

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Tue 4/8

21:10-23:41

2 stops31h 31m

£1,222

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 4/7

21:25-23:40

2 stops31h 15m

£2,244

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 4/7

21:25-23:40

2 stops31h 15m

£2,246
Fastest single journey

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Tue 4/8

20:10-10:56

1 stop19h 46m

£2,368

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 18/6

21:25-23:35

2 stops31h 10m

£2,410

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Islip, New York from

Islip, New York flights insights and trends

Explore insights for your Islip, New York flight to craft the best travel plan

How long does it take to fly to Islip, New York?

The average flight duration from United Kingdom to Islip, New York depends on which airport you fly into and out of. Flying from London Heathrow to New York John F Kennedy Intl is 7h 45m on average, while flying from Manchester to New York John F Kennedy Intl is 7h 45m on average. New York John F Kennedy Intl is the most popular airport in Islip, New York.

Cheapest flights to Islip Long Island

Find the cheapest flights to Islip Long Island from your nearest city or airport

Cheap Islip, New York flight deals and tips

Summary info about Islip, New York flight prices, duration and airlines

Best One-Way Price

£1,222

Best Round-Trip Price

£1,145

Fastest flight time

31h 31m
The best one-way flight price to Islip from United Kingdom in the last 5 days is £1,222 (London Heathrow to Islip Long Island).
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The best round-trip flight price to Islip from United Kingdom in the last 5 days is £1,145 (London Heathrow to Islip Long Island).
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The fastest flight to Islip from United Kingdom takes 31h 31m (London Heathrow to Islip Long Island).
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Frequently asked questions about flying to Islip, New York

Is there an alternative airport near Islip, New York?

Those flying to Islip, New York could potentially find better pricing at Islip Long Island Airport (7 mi from Islip, New York city centre), Farmingdale Republic Field Airport (11 mi from Islip, New York city centre), New York LaGuardia Airport (35 mi from Islip, New York city centre), Newark Airport (51 mi from Islip, New York city centre) or New Windsor Stewart Airport (71 mi from Islip, New York city centre) depending on the month and departure airport.

Is there a cheaper alternative to flying into Islip, New York?

Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in Islip, New York is New Windsor Stewart Airport where the average price is £74. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

What is the absolute cheapest flight to Islip, New York?

£74 is the cheapest deal found on momondo in the last two weeks for a flight to Islip, New York. This flight is from Chicago and is 74% cheaper than most flights to Islip, New York. To find the cheapest price to Islip, New York from your area, use momondo’s Airport-to-Airport Pricing Tool.

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

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

How old do you have to be to fly 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 to Islip Long Island Airport.

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

The travel and health documents required for your trip to Islip Long Island Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Islip Long Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Islip, New York?

Book flights to Islip, New York if you plan to visit one of these locations
Riverhead
Southampton
Montauk

Why use momondo?

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

It is quick and easy to find flights to Islip 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 to Islip with flexible booking policies on momondo?

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

How can momondo help me find flights to Islip?

Once all potential Islip flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.

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

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

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Find better results for your trip to Islip, New York

Popular Flights to Islip, New York

Popular routes according to searches in the past day on momondo
London to Islip Long Island Flightsfrom £1,532
Edinburgh Turnhouse to Islip Long Island Flightsfrom £1,494
Manchester to Islip Long Island Flightsfrom £1,352