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 48% 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.

$730 Cheap Flights from Islip to London in 2025/26

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0 bags

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Find the cheapest flights from Islip, New York to London

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One-way

Cheap round-trip flights

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9:27 pm - 10:00 amISP-LGW

31h 33m1 stop

2:00 pm - 10:18 amLGW-ISP

25h 18m1 stop

$730Multiple Airlines

Find Deal

Sun, Nov 16 - Mon, Nov 24

9:27 pm - 6:00 amISP-LGW

27h 33m2 stops

2:00 pm - 10:18 amLGW-ISP

25h 18m1 stop

$820Multiple Airlines

Find Deal

Sun, Nov 16 - Mon, Nov 24

8:35 pm - 10:00 amISP-LGW

32h 25m1 stop

2:10 pm - 1:09 pmLGW-ISP

27h 59m1 stop

$922Multiple Airlines

Find Deal

Sun, Dec 21 - Sun, Dec 28

2:19 pm - 10:00 amISP-LGW

38h 41m2 stops

2:10 pm - 1:09 pmLGW-ISP

27h 59m1 stop

$943Multiple Airlines

Find Deal

Sun, Dec 21 - Sun, Dec 28

2:19 pm - 10:00 amISP-LGW

38h 41m2 stops

2:00 pm - 1:09 pmLGW-ISP

28h 09m1 stop

$1,110Multiple Airlines

Find Deal

Sat, Dec 20 - Sat, Dec 27

6:40 pm - 10:00 amISP-LGW

34h 20m1 stop

2:00 pm - 1:09 pmLGW-ISP

28h 09m1 stop

$1,153Multiple Airlines

Find Deal

Sat, Dec 20 - Sat, Dec 27

1:27 pm - 10:00 amISP-LGW

15h 33m1 stop

2:00 pm - 5:55 pmLGW-ISP

32h 55m1 stop

$1,250Multiple Airlines

Find Deal

Fri, Dec 19 - Fri, Dec 26

1:27 pm - 10:00 amISP-LGW

15h 33m1 stop

8:05 pm - 11:04 amLGW-ISP

43h 59m2 stops

$1,452Multiple Airlines

Find Deal

Fri, Dec 19 - Fri, Dec 26

9:59 am - 7:10 amISP-LHR

16h 11m2 stops

6:50 am - 7:45 pmLHR-ISP

17h 55m3 stops

$1,509Multiple Airlines

Find Deal

Sun, Nov 16 - Mon, Nov 24

12:40 pm - 7:00 amISP-LHR

13h 20m1 stop

1:30 pm - 7:45 pmLHR-ISP

11h 15m1 stop

$1,528Multiple Airlines

Find Deal

Sun, Nov 16 - Mon, Nov 24

Fly from

Fly to

Route

Depart

Return

Price

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 11/16

9:27 pm-10:00 am

1 stop31h 33m

London Gatwick

Mon 11/24

2:00 pm-10:18 am

1 stop25h 18m

$730

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 11/16

9:27 pm-6:00 am

2 stops27h 33m

London Gatwick

Mon 11/24

2:00 pm-10:18 am

1 stop25h 18m

$820

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 12/21

8:35 pm-10:00 am

1 stop32h 25m

London Gatwick

Sun 12/28

2:10 pm-1:09 pm

1 stop27h 59m

$922

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 12/21

2:19 pm-10:00 am

2 stops38h 41m

London Gatwick

Sun 12/28

2:10 pm-1:09 pm

1 stop27h 59m

$943

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 12/20

2:19 pm-10:00 am

2 stops38h 41m

London Gatwick

Sat 12/27

2:00 pm-1:09 pm

1 stop28h 09m

$1,110

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 12/20

6:40 pm-10:00 am

1 stop34h 20m

London Gatwick

Sat 12/27

2:00 pm-1:09 pm

1 stop28h 09m

$1,153

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 12/19

1:27 pm-10:00 am

1 stop15h 33m

London Gatwick

Fri 12/26

2:00 pm-5:55 pm

1 stop32h 55m

$1,250

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 12/19

1:27 pm-10:00 am

1 stop15h 33m

London Gatwick

Fri 12/26

8:05 pm-11:04 am

2 stops43h 59m

$1,452

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 11/16

9:59 am-7:10 am

2 stops16h 11m

London Heathrow

Mon 11/24

6:50 am-7:45 pm

3 stops17h 55m

$1,509

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 11/16

12:40 pm-7:00 am

1 stop13h 20m

London Heathrow

Mon 11/24

1:30 pm-7:45 pm

1 stop11h 15m

$1,528

Flights are sorted by cheapest round-trip flights first.

Sorted 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 Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $633. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $675. 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 $673. 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

Direct flights	None

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 13h 15m.
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

Chelmsford

Wembley

Folkestone

Romford

Ilford

Cobham

Stansted

Harrow

Watford

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.