Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London to New York from $1,089

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 to New York departing on 11/5. 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 to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:15 pm - 11:30 pm
LHR
-
ISP
16h 15m
2 stops
Multiple Airlines Logo
12:25 pm - 7:30 pm
ISP
-
LHR
26h 05m
2 stops
$1,089Multiple Airlines
Thu, Nov 5 - Thu, Nov 12
Multiple Airlines Logo
8:25 pm - 9:53 am
LHR
-
ISP
42h 28m
2 stops
Multiple Airlines Logo
2:11 pm - 6:45 am
ISP
-
LHR
11h 34m
1 stop
$1,628Multiple Airlines
Thu, Aug 6 - Thu, Aug 13
Multiple Airlines Logo
9:40 am - 5:41 pm
LHR
-
ISP
13h 01m
1 stop
Multiple Airlines Logo
2:11 pm - 11:55 am
ISP
-
LHR
16h 44m
2 stops
$2,588Multiple Airlines
Wed, Jul 15 - Tue, Jul 21
Multiple Airlines Logo
9:50 am - 8:15 pm
LHR
-
ISP
15h 25m
2 stops
Multiple Airlines Logo
2:11 pm - 8:05 am
ISP
-
LHR
12h 54m
2 stops
$5,936Multiple Airlines
Thu, Aug 6 - Thu, Aug 13
Multiple Airlines Logo
5:35 pm - 12:30 pm
LHR
-
ISP
23h 55m
1 stop
Multiple Airlines Logo
10:00 am - 9:35 am
ISP
-
LHR
18h 35m
1 stop
$5,951Multiple Airlines
Thu, Aug 6 - Thu, Aug 13
Multiple Airlines Logo
9:30 am - 8:15 pm
LHR
-
ISP
15h 45m
2 stops
Multiple Airlines Logo
10:00 am - 6:55 am
ISP
-
LHR
15h 55m
2 stops
$11,266Multiple Airlines
Wed, Jul 15 - Tue, Jul 21

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

momondo Fare Finder

 
Customize your flight search to find flights from London 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 23, 2026.
Use the filters below to find and compare flights from London to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 11/5

12:15 pm-11:30 pm

2 stops16h 15m

Islip Long Island

Thu 11/12

12:25 pm-7:30 pm

2 stops26h 05m

$1,089

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 8/6

8:25 pm-9:53 am

2 stops42h 28m

Islip Long Island

Thu 8/13

2:11 pm-6:45 am

1 stop11h 34m

$1,628

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Wed 7/15

9:40 am-5:41 pm

1 stop13h 01m

Islip Long Island

Tue 7/21

2:11 pm-11:55 am

2 stops16h 44m

$2,588
Quickest round-trip

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 8/6

9:50 am-8:15 pm

2 stops15h 25m

Islip Long Island

Thu 8/13

2:11 pm-8:05 am

2 stops12h 54m

$5,936

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Thu 8/6

5:35 pm-12:30 pm

1 stop23h 55m

Islip Long Island

Thu 8/13

10:00 am-9:35 am

1 stop18h 35m

$5,951

LondonIslip

LHR - ISP

LHRISP

London Heathrow

Wed 7/15

9:30 am-8:15 pm

2 stops15h 45m

Islip Long Island

Tue 7/21

10:00 am-6:55 am

2 stops15h 55m

$11,266

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 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 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 17 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

Fastest flight time

42h 28m

Direct flights

None
The fastest flight from London to Islip, New York takes 42h 28m
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?

    A flight from London to Islip Long Island will travel around 3425.8 mi. By plane, this route typically takes 42h 28m.

  • 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.

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?

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.

An easier way to manage your Islip, New York trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 7/23
Thu 7/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States