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 45% 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.

$877 Cheap Flights from Islip to London in 2026

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Find the cheapest flights from Islip, New York to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:02 pm - 10:45 am

ISP

LGW

35h 43m

2 stops

2:00 pm - 10:03 am

LGW

ISP

25h 03m

1 stop

$909Multiple Airlines

Tue, Jun 2 - Tue, Jun 9

6:02 pm - 10:00 am

ISP

LGW

34h 58m

1 stop

2:00 pm - 10:03 am

LGW

ISP

25h 03m

1 stop

$929Multiple Airlines

Tue, Jun 2 - Tue, Jun 9

11:00 am - 10:00 am

ISP

LGW

18h 00m

1 stop

2:00 pm - 10:05 am

LGW

ISP

25h 05m

1 stop

$1,036Multiple Airlines

Sun, May 31 - Sun, Jun 7

11:00 am - 7:55 am

ISP

LGW

39h 55m

2 stops

2:00 pm - 10:05 am

LGW

ISP

25h 05m

1 stop

$1,059Multiple Airlines

Thu, May 28 - Thu, Jun 4

11:00 am - 7:55 am

ISP

LGW

39h 55m

2 stops

2:00 pm - 10:05 am

LGW

ISP

25h 05m

1 stop

$1,073Multiple Airlines

Fri, May 29 - Fri, Jun 5

11:00 am - 10:00 am

ISP

LGW

18h 00m

1 stop

2:00 pm - 1:28 pm

LGW

ISP

28h 28m

2 stops

$1,080Multiple Airlines

Sun, May 31 - Sun, Jun 7

11:00 am - 10:00 am

ISP

LGW

18h 00m

1 stop

2:00 pm - 3:56 pm

LGW

ISP

30h 56m

1 stop

$1,084Multiple Airlines

Mon, Jun 1 - Mon, Jun 8

11:00 am - 10:45 am

ISP

LGW

18h 45m

2 stops

2:00 pm - 10:05 am

LGW

ISP

25h 05m

1 stop

$1,100Multiple Airlines

Sat, May 30 - Sat, Jun 6

11:00 am - 10:45 am

ISP

LGW

18h 45m

2 stops

2:00 pm - 3:56 pm

LGW

ISP

30h 56m

1 stop

$1,101Multiple Airlines

Mon, Jun 1 - Mon, Jun 8

8:59 pm - 9:30 am

ISP

LHR

31h 31m

2 stops

8:40 am - 12:32 pm

LHR

ISP

32h 52m

2 stops

$1,342JetBlue

Fri, May 15 - Fri, May 22

JetBlue flights from Islip, New York to London

Our best JetBlue deals on Islip, New York to London flight tickets

JetBlue

May 15

ISP8:59 pmIslip Long Island

31h 31m

2 stops

LHR9:30 amLondon Heathrow

May 22

LHR8:40 amLondon Heathrow

32h 52m

2 stops

ISP12:32 pmIslip Long Island

$1,342

JetBlue

Apr 22

ISP5:25 pmIslip Long Island

22h 20m

2 stops

LHR8:45 pmLondon Heathrow

Apr 29

LHR8:15 amLondon Heathrow

37h 15m

2 stops

ISP4:30 pmIslip Long Island

$1,412

JetBlue

Jul 10

ISP5:00 pmIslip Long Island

32h 30m

2 stops

LHR6:30 amLondon Heathrow

Jul 14

LHR8:15 amLondon Heathrow

31h 20m

2 stops

ISP10:35 amIslip Long Island

$1,568

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Tue 6/2

6:02 pm-10:45 am

2 stops35h 43m

London Gatwick

Tue 6/9

2:00 pm-10:03 am

1 stop25h 03m

$909

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Tue 6/2

6:02 pm-10:00 am

1 stop34h 58m

London Gatwick

Tue 6/9

2:00 pm-10:03 am

1 stop25h 03m

$929

Quickest round-trip

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 5/31

11:00 am-10:00 am

1 stop18h 00m

London Gatwick

Sun 6/7

2:00 pm-10:05 am

1 stop25h 05m

$1,036

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 5/28

11:00 am-7:55 am

2 stops39h 55m

London Gatwick

Thu 6/4

2:00 pm-10:05 am

1 stop25h 05m

$1,059

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 5/29

11:00 am-7:55 am

2 stops39h 55m

London Gatwick

Fri 6/5

2:00 pm-10:05 am

1 stop25h 05m

$1,073

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sun 5/31

11:00 am-10:00 am

1 stop18h 00m

London Gatwick

Sun 6/7

2:00 pm-1:28 pm

2 stops28h 28m

$1,080

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Mon 6/1

11:00 am-10:00 am

1 stop18h 00m

London Gatwick

Mon 6/8

2:00 pm-3:56 pm

1 stop30h 56m

$1,084

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 5/30

11:00 am-10:45 am

2 stops18h 45m

London Gatwick

Sat 6/6

2:00 pm-10:05 am

1 stop25h 05m

$1,100

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Mon 6/1

11:00 am-10:45 am

2 stops18h 45m

London Gatwick

Mon 6/8

2:00 pm-3:56 pm

1 stop30h 56m

$1,101

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 5/15

8:59 pm-9:30 am

2 stops31h 31m

London Heathrow

Fri 5/22

8:40 am-12:32 pm

2 stops32h 52m

$1,342

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 $631. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $695. 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 in the morning is the least expensive time of day to depart. momondo users have found prices as low as $619 when looking at flights departing in the morning. Flights to London are more costly in the evening, with an average ticket price of $682. 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	17h 05m
Direct flights	None

The fastest flight from Islip, New York to London takes 17h 05m

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

Search flight deals

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

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 17h 05m.
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

Luton

Dover

Hayes

Slough

Crawley

Wembley

Stansted

Croydon

Dartford

Brentwood

Cobham

Folkestone

Guildford

Romford

Harrow

Watford

Richmond

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.

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Cheap flights from Islip, New York to London from $877

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to London departing on 5/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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

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

What airlines fly to London?

When to book flights from Islip, New York to London

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

Direct flights

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

Traveling to a place near London?

Why use momondo?

An easier way to manage your London 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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