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Cheap flights from London Heathrow Airport to New York from $1,093

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to New York departing on 10/9. 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

Find the cheapest flights from London Heathrow Airport to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:05 pm - 11:35 pm
LHR
-
ISP
15h 30m
2 stops
Multiple Airlines Logo
4:25 pm - 11:55 am
ISP
-
LHR
14h 30m
2 stops
$1,093Multiple Airlines
Fri, Oct 9 - Tue, Oct 13
Multiple Airlines Logo
7:40 am - 12:30 pm
LHR
-
ISP
33h 50m
3 stops
Multiple Airlines Logo
9:00 am - 9:00 pm
ISP
-
LHR
31h 00m
2 stops
$1,638Multiple Airlines
Sat, Aug 1 - Sat, Aug 8
Multiple Airlines Logo
7:40 am - 12:30 pm
LHR
-
ISP
33h 50m
3 stops
Multiple Airlines Logo
7:00 am - 6:30 am
ISP
-
LHR
18h 30m
3 stops
$1,714Multiple Airlines
Sat, Aug 1 - Sat, Aug 8
Multiple Airlines Logo
6:45 pm - 6:35 pm
LHR
-
ISP
28h 50m
2 stops
Multiple Airlines Logo
9:00 am - 6:30 am
ISP
-
LHR
16h 30m
1 stop
$2,603Multiple Airlines
Sat, Aug 1 - Sat, Aug 8
Multiple Airlines Logo
9:15 am - 8:59 pm
LHR
-
ISP
16h 44m
2 stops
Multiple Airlines Logo
3:05 pm - 1:30 pm
ISP
-
LHR
17h 25m
2 stops
$3,824Multiple Airlines
Sat, Aug 1 - Sat, Aug 8
Multiple Airlines Logo
10:05 am - 8:59 pm
LHR
-
ISP
15h 54m
1 stop
Multiple Airlines Logo
9:00 am - 8:35 am
ISP
-
LHR
18h 35m
1 stop
$6,085Multiple Airlines
Sat, Aug 1 - Sat, Aug 8

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Customize your flight search to find flights from London Heathrow Airport to Islip, New York that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Fri 10/9

1:05 pm-11:35 pm

2 stops15h 30m

Islip Long Island

Tue 10/13

4:25 pm-11:55 am

2 stops14h 30m

$1,093

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 8/1

7:40 am-12:30 pm

3 stops33h 50m

Islip Long Island

Sat 8/8

9:00 am-9:00 pm

2 stops31h 00m

$1,638

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 8/1

7:40 am-12:30 pm

3 stops33h 50m

Islip Long Island

Sat 8/8

7:00 am-6:30 am

3 stops18h 30m

$1,714

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 8/1

6:45 pm-6:35 pm

2 stops28h 50m

Islip Long Island

Sat 8/8

9:00 am-6:30 am

1 stop16h 30m

$2,603

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 8/1

9:15 am-8:59 pm

2 stops16h 44m

Islip Long Island

Sat 8/8

3:05 pm-1:30 pm

2 stops17h 25m

$3,824

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 8/1

10:05 am-8:59 pm

1 stop15h 54m

Islip Long Island

Sat 8/8

9:00 am-8:35 am

1 stop18h 35m

$6,085
Cheapest one-way
Quickest one-way

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 7/4

9:25 pm-11:40 pm

2 stops31h 15m

$3,015

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 7/4

9:25 pm-11:40 pm

2 stops31h 15m

$3,016

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Sat 7/4

9:25 pm-11:40 pm

2 stops31h 15m

$3,025

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to New York from

How to get the cheapest flight ticket from London Heathrow Airport 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, Virgin Atlantic and United Airlines are the top three most popular airlines that fly to Islip, New York from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 16 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 Heathrow Airport to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport 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 Heathrow Airport to Islip, New York (LHR to ISP) flight deals and tips

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

Fastest flight time

17h 52m

Direct flights

None
The fastest flight from London Heathrow Airport to Islip, New York takes 17h 52m
There are no direct flights from London Heathrow Airport to Islip, New York. There are no popular flight routes from London Heathrow Airport to Islip, New York.
Search flight deals

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

  • How far is London Heathrow to Islip Long Island by plane?

    A flight from London Heathrow to Islip Long Island will travel around 3412.8 mi. In terms of flight time, this usually takes a little over 17h 52m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport 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.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
Montauk
Riverhead
Southampton
Sag Harbor
Amagansett

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?

momondo does allow users to show only those flights to Islip from London which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Islip.

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

Of course. momondo tracks the price of London to Islip flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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