What airlines fly to London?

British Airways, United Airlines and American Airlines 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 43% 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.

$1,012 Cheap Flights from Islip, New York 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.

2:28 pm - 10:00 am

ISP

LGW

38h 32m

2 stops

2:00 pm - 10:03 am

LGW

ISP

25h 03m

1 stop

$1,028Multiple Airlines

Fri, Jul 31 - Thu, Aug 20

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$1,043Multiple Airlines

Thu, Jun 11 - Thu, Jun 18

10:48 am - 10:00 am

ISP

LGW

18h 12m

1 stop

2:00 pm - 10:03 am

LGW

ISP

25h 03m

1 stop

$1,116Multiple Airlines

Fri, Jul 31 - Thu, Aug 20

9:52 pm - 10:45 am

ISP

LGW

31h 53m

2 stops

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$1,132Multiple Airlines

Thu, Jun 11 - Thu, Jun 18

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 3:56 pm

LGW

ISP

30h 56m

1 stop

$1,144Multiple Airlines

Mon, Jun 15 - Mon, Jun 22

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 3:56 pm

LGW

ISP

30h 56m

1 stop

$1,169Multiple Airlines

Mon, Jun 15 - Mon, Jun 22

5:00 pm - 9:35 am

ISP

LGW

35h 35m

2 stops

12:20 pm - 9:34 pm

LGW

ISP

38h 14m

2 stops

$1,242JetBlue

Fri, Jul 31 - Thu, Aug 20

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 11:16 am

LGW

ISP

26h 16m

2 stops

$1,278Multiple Airlines

Mon, Jun 15 - Mon, Jun 22

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 11:16 am

LGW

ISP

26h 16m

2 stops

$1,285Multiple Airlines

Mon, Jun 15 - Mon, Jun 22

5:00 pm - 6:30 am

ISP

LHR

32h 30m

2 stops

8:15 am - 9:34 pm

LHR

ISP

42h 19m

2 stops

$1,316JetBlue

Fri, Jul 31 - Thu, Aug 20

JetBlue flights from Islip, New York to London

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

JetBlue

Jul 31

ISP5:00 pmIslip Long Island

35h 35m

2 stops

LGW9:35 amLondon Gatwick

Aug 20

LGW12:20 pmLondon Gatwick

38h 14m

2 stops

ISP9:34 pmIslip Long Island

$1,242

JetBlue

Jul 31

ISP5:00 pmIslip Long Island

32h 30m

2 stops

LHR6:30 amLondon Heathrow

Aug 20

LHR8:15 amLondon Heathrow

42h 19m

2 stops

ISP9:34 pmIslip Long Island

$1,316

JetBlue

May 11

ISP8:59 pmIslip Long Island

42h 46m

2 stops

LHR8:45 pmLondon Heathrow

May 25

LHR8:40 amLondon Heathrow

31h 55m

2 stops

ISP11:35 amIslip Long Island

$1,762

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 7/31

2:28 pm-10:00 am

2 stops38h 32m

London Gatwick

Thu 8/20

2:00 pm-10:03 am

1 stop25h 03m

$1,028

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 6/11

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Thu 6/18

2:00 pm-8:57 pm

1 stop35h 57m

$1,043

Quickest round-trip

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 7/31

10:48 am-10:00 am

1 stop18h 12m

London Gatwick

Thu 8/20

2:00 pm-10:03 am

1 stop25h 03m

$1,116

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 6/11

9:52 pm-10:45 am

2 stops31h 53m

London Gatwick

Thu 6/18

2:00 pm-8:57 pm

1 stop35h 57m

$1,132

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Mon 6/15

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Mon 6/22

2:00 pm-3:56 pm

1 stop30h 56m

$1,144

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Mon 6/15

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Mon 6/22

2:00 pm-3:56 pm

1 stop30h 56m

$1,169

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 7/31

5:00 pm-9:35 am

2 stops35h 35m

London Gatwick

Thu 8/20

12:20 pm-9:34 pm

2 stops38h 14m

$1,242

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Mon 6/15

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Mon 6/22

2:00 pm-11:16 am

2 stops26h 16m

$1,278

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Mon 6/15

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Mon 6/22

2:00 pm-11:16 am

2 stops26h 16m

$1,285

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 7/31

5:00 pm-6:30 am

2 stops32h 30m

London Heathrow

Thu 8/20

8:15 am-9:34 pm

2 stops42h 19m

$1,316

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $705. 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 $628 when looking at flights departing in the morning. Flights to London are more costly in the evening, with an average ticket price of $690. 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	14h 30m
Direct flights	None

The fastest flight from Islip, New York to London takes 14h 30m

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 14h 30m.
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.

Hounslow

Gatwick

Milton Keynes

Dover

Luton

Hayes

Crawley

Slough

Wembley

Stansted

Watford

Croydon

Uxbridge

Brentwood

Dartford

Cobham

Folkestone

Romford

Harrow

Guildford

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 $1,012

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 6/1. 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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According to popular flight searches on momondo this year

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