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.

$765 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:00 am - 10:00 am

ISP

LGW

18h 00m

1 stop

2:00 pm - 10:05 am

LGW

ISP

25h 05m

1 stop

$959Multiple Airlines

mer., mai 27 - mer., juin 3

11:57 am - 10:00 am

ISP

LGW

17h 03m

2 stops

2:00 pm - 10:05 am

LGW

ISP

25h 05m

1 stop

$1,047Multiple Airlines

mer., mai 27 - mer., juin 3

10:48 am - 10:00 am

ISP

LGW

18h 12m

1 stop

1:05 pm - 5:29 pm

LGW

ISP

33h 24m

2 stops

$1,181Multiple Airlines

ven., juil. 10 - mar., juil. 14

8:59 pm - 6:30 am

ISP

LHR

52h 31m

2 stops

11:55 am - 5:44 pm

LHR

ISP

58h 49m

2 stops

$1,194JetBlue

jeu., mai 7 - jeu., mai 14

10:48 am - 10:00 am

ISP

LGW

18h 12m

1 stop

2:00 pm - 10:03 am

LGW

ISP

25h 03m

1 stop

$1,237Multiple Airlines

ven., juil. 10 - mar., juil. 14

8:59 pm - 9:30 am

ISP

LHR

55h 31m

2 stops

8:15 am - 5:44 pm

LHR

ISP

38h 29m

2 stops

$1,319JetBlue

ven., mai 15 - mar., mai 19

10:48 am - 10:00 am

ISP

LGW

18h 12m

1 stop

2:00 pm - 11:17 am

LGW

ISP

50h 17m

2 stops

$1,472Multiple Airlines

sam., juil. 4 - jeu., juil. 16

6:00 am - 6:30 am

ISP

LHR

43h 30m

2 stops

8:15 am - 11:17 pm

LHR

ISP

44h 02m

2 stops

$1,495JetBlue

ven., juil. 10 - mar., juil. 14

12:30 pm - 6:45 am

ISP

LHR

13h 15m

1 stop

9:40 am - 7:45 pm

LHR

ISP

15h 05m

1 stop

$1,500Multiple Airlines

ven., mai 15 - mar., mai 19

5:00 pm - 6:30 am

ISP

LHR

32h 30m

2 stops

8:15 am - 11:17 pm

LHR

ISP

44h 02m

2 stops

$1,516JetBlue

ven., juil. 10 - mar., juil. 14

JetBlue flights from Islip, New York to London

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

JetBlue

May 7

ISP8:59 pmIslip Long Island

52h 31m

2 stops

LHR6:30 amLondon Heathrow

May 14

LHR11:55 amLondon Heathrow

58h 49m

2 stops

ISP5:44 pmIslip Long Island

$1,194

JetBlue

May 15

ISP8:59 pmIslip Long Island

55h 31m

2 stops

LHR9:30 amLondon Heathrow

May 19

LHR8:15 amLondon Heathrow

38h 29m

2 stops

ISP5:44 pmIslip Long Island

$1,319

JetBlue

Jul 10

ISP6:00 amIslip Long Island

43h 30m

2 stops

LHR6:30 amLondon Heathrow

Jul 14

LHR8:15 amLondon Heathrow

44h 02m

2 stops

ISP11:17 pmIslip Long Island

$1,495

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

mer. 5/27

11:00 am-10:00 am

1 stop18h 00m

London Gatwick

mer. 6/3

2:00 pm-10:05 am

1 stop25h 05m

$959

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

mer. 5/27

11:57 am-10:00 am

2 stops17h 03m

London Gatwick

mer. 6/3

2:00 pm-10:05 am

1 stop25h 05m

$1,047

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

ven. 7/10

10:48 am-10:00 am

1 stop18h 12m

London Gatwick

mar. 7/14

1:05 pm-5:29 pm

2 stops33h 24m

$1,181

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

jeu. 5/7

8:59 pm-6:30 am

2 stops52h 31m

London Heathrow

jeu. 5/14

11:55 am-5:44 pm

2 stops58h 49m

$1,194

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

ven. 7/10

10:48 am-10:00 am

1 stop18h 12m

London Gatwick

mar. 7/14

2:00 pm-10:03 am

1 stop25h 03m

$1,237

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

ven. 5/15

8:59 pm-9:30 am

2 stops55h 31m

London Heathrow

mar. 5/19

8:15 am-5:44 pm

2 stops38h 29m

$1,319

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

sam. 7/4

10:48 am-10:00 am

1 stop18h 12m

London Gatwick

jeu. 7/16

2:00 pm-11:17 am

2 stops50h 17m

$1,472

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

ven. 7/10

6:00 am-6:30 am

2 stops43h 30m

London Heathrow

mar. 7/14

8:15 am-11:17 pm

2 stops44h 02m

$1,495

Quickest round-trip

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

ven. 5/15

12:30 pm-6:45 am

1 stop13h 15m

London Heathrow

mar. 5/19

9:40 am-7:45 pm

1 stop15h 05m

$1,500

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

ven. 7/10

5:00 pm-6:30 am

2 stops32h 30m

London Heathrow

mar. 7/14

8:15 am-11:17 pm

2 stops44h 02m

$1,516

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 $617 when looking at flights departing in the morning. Flights to London are more costly in the evening, with an average ticket price of $681. 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	15h 31m
Direct flights	None

The fastest flight from Islip, New York to London takes 15h 31m

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 15h 31m.
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

Wembley

Crawley

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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London Stansted Airport

Cheap flights from Islip, New York to London from $765

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 5/10. 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

Cabin classes currently available on flights to London

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

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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