What airlines fly to London?

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London from Islip, New York according to our data. British Airways is the first choice among our users, with 49% of people opting to fly with this airline when traveling to London. Keep in mind that there are 22 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

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

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

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 Islip Long Island Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$312 Cheap Flights from Islip to London in 2025/26

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Find the cheapest flights from Islip, New York to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:43 pm - 10:00 am

ISP

LGW

33h 17m1 stop

2:00 pm - 7:38 am

LGW

ISP

22h 38m1 stop

$706Multiple Airlines

Thu, Feb 5 - Thu, Feb 12

7:26 pm - 10:00 am

ISP

LGW

33h 34m2 stops

2:00 pm - 7:38 am

LGW

ISP

22h 38m1 stop

$708Multiple Airlines

Thu, Feb 5 - Thu, Feb 12

7:58 pm - 10:00 am

ISP

LGW

33h 02m1 stop

11:40 am - 6:48 pm

LGW

ISP

36h 08m2 stops

$732Multiple Airlines

Sun, Jan 18 - Wed, Jan 28

7:58 pm - 10:00 am

ISP

LGW

33h 02m1 stop

11:40 am - 6:48 pm

LGW

ISP

36h 08m2 stops

$736Multiple Airlines

Sun, Jan 18 - Wed, Jan 28

9:59 am - 7:00 am

ISP

LHR

16h 01m1 stop

1:30 pm - 7:45 pm

LHR

ISP

11h 15m1 stop

$1,296Multiple Airlines

Sun, Jan 18 - Wed, Jan 28

12:30 pm - 6:55 am

ISP

LHR

13h 25m1 stop

7:55 pm - 7:45 pm

LHR

ISP

28h 50m2 stops

$1,611Multiple Airlines

Thu, Feb 5 - Thu, Feb 12

10:00 am - 11:25 am

ISP

LHR

20h 25m2 stops

8:50 am - 8:40 am

LHR

ISP

28h 50m2 stops

$1,860Multiple Airlines

Thu, Feb 5 - Thu, Feb 12

12:30 pm - 6:55 am

ISP

LHR

13h 25m1 stop

9:20 am - 4:10 pm

LHR

ISP

11h 50m1 stop

$1,949Multiple Airlines

Thu, Feb 5 - Thu, Feb 12

12:25 pm - 8:45 pm

ISP

LHR

27h 20m2 stops

7:50 am - 7:45 pm

LHR

ISP

16h 55m2 stops

$4,992Multiple Airlines

Sun, Jan 18 - Wed, Jan 28

10:00 am - 7:30 am

ISP

LGW

16h 30m1 stop

11:20 am - 8:52 am

LGW

ISP

26h 32m1 stop

$9,619Multiple Airlines

Sun, Jan 18 - Wed, Jan 28

Fly from

Fly to

Route

Depart

Return

Price

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 2/5

7:43 pm-10:00 am

1 stop33h 17m

London Gatwick

Thu 2/12

2:00 pm-7:38 am

1 stop22h 38m

$706

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 2/5

7:26 pm-10:00 am

2 stops33h 34m

London Gatwick

Thu 2/12

2:00 pm-7:38 am

1 stop22h 38m

$708

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 1/18

7:58 pm-10:00 am

1 stop33h 02m

London Gatwick

Wed 1/28

11:40 am-6:48 pm

2 stops36h 08m

$732

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 1/18

7:58 pm-10:00 am

1 stop33h 02m

London Gatwick

Wed 1/28

11:40 am-6:48 pm

2 stops36h 08m

$736

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 1/18

9:59 am-7:00 am

1 stop16h 01m

London Heathrow

Wed 1/28

1:30 pm-7:45 pm

1 stop11h 15m

$1,296

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 2/5

12:30 pm-6:55 am

1 stop13h 25m

London Heathrow

Thu 2/12

7:55 pm-7:45 pm

2 stops28h 50m

$1,611

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 2/5

10:00 am-11:25 am

2 stops20h 25m

London Heathrow

Thu 2/12

8:50 am-8:40 am

2 stops28h 50m

$1,860

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 2/5

12:30 pm-6:55 am

1 stop13h 25m

London Heathrow

Thu 2/12

9:20 am-4:10 pm

1 stop11h 50m

$1,949

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 1/18

12:25 pm-8:45 pm

2 stops27h 20m

London Heathrow

Wed 1/28

7:50 am-7:45 pm

2 stops16h 55m

$4,992

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 1/18

10:00 am-7:30 am

1 stop16h 30m

London Gatwick

Wed 1/28

11:20 am-8:52 am

1 stop26h 32m

$9,619

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Islip, New York to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $634. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $685. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from Islip, New York at noon is the least expensive time of day to depart. momondo users have found prices as low as $500 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $679. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Islip, New York to London

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

Estimated round-trip price

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

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

Fastest flight time	16h 01m
Direct flights	None

The fastest flight from Islip, New York to London takes 16h 01m

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

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How far is Islip Long Island to London by plane?
The distance between Islip Long Island and London is about 3425.8 mi. In terms of flight time, this usually takes a little over 16h 01m.
When did momondo last update prices for flights from Islip Long Island Airport to London?
Prices for flights from Islip Long Island Airport to London are refreshed on a daily basis.
How old do you have to be to fly from Islip Long Island Airport to London?
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 Islip Long Island Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Wembley

Watford

Ilford

Cobham

Folkestone

Romford

Richmond

Uxbridge

Stansted

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Islip to London. momondo saves you time and could save you money on your trip.

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

All flight searches from Islip to London on momondo can be filtered to show those which offer flexible booking policies.

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

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 Islip to London.

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

Yes. momondo can track prices for Islip to London 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.