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.

What is the cheapest airline that flies from Islip Long Island to London?

JetBlue is the most popular carrier operating from Islip Long Island to London

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.

$481 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$925Multiple Airlines

Thu, Jun 11 - Wed, Jun 17

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$995Multiple Airlines

Thu, Jun 11 - Wed, Jun 17

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$999Multiple Airlines

Fri, Jun 19 - Sun, Jun 28

9:52 pm - 10:00 am

ISP

LGW

31h 08m

1 stop

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$1,010Multiple Airlines

Fri, Jun 19 - Fri, Jun 26

2:28 pm - 10:00 am

ISP

LGW

38h 32m

2 stops

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$1,081Multiple Airlines

Fri, Jun 19 - Sun, Jun 28

9:52 pm - 10:45 am

ISP

LGW

31h 53m

2 stops

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$1,091Multiple Airlines

Thu, Jun 11 - Wed, Jun 17

9:52 pm - 10:45 am

ISP

LGW

31h 53m

2 stops

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$1,140Multiple Airlines

Fri, Jun 19 - Fri, Jun 26

9:52 pm - 7:55 am

ISP

LGW

29h 03m

2 stops

2:00 pm - 8:57 pm

LGW

ISP

35h 57m

1 stop

$1,177Multiple Airlines

Thu, Jun 11 - Wed, Jun 17

6:00 am - 8:45 pm

ISP

LHR

33h 45m

2 stops

8:15 am - 11:17 pm

LHR

ISP

44h 02m

2 stops

$1,445JetBlue

Mon, Jul 13 - Tue, Jul 21

3:07 pm - 8:45 pm

ISP

LHR

48h 38m

2 stops

8:40 am - 2:12 pm

LHR

ISP

58h 32m

2 stops

$1,549JetBlue

Fri, Jun 19 - Sun, Jun 28

JetBlue flights from Islip, New York to London

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

JetBlue

Jul 13

ISP6:00 amIslip Long Island

33h 45m

2 stops

LHR8:45 pmLondon Heathrow

Jul 21

LHR8:15 amLondon Heathrow

44h 02m

2 stops

ISP11:17 pmIslip Long Island

$1,445

JetBlue

Jun 19

ISP3:07 pmIslip Long Island

48h 38m

2 stops

LHR8:45 pmLondon Heathrow

Jun 28

LHR8:40 amLondon Heathrow

58h 32m

2 stops

ISP2:12 pmIslip Long Island

$1,549

JetBlue

Jun 19

ISP12:20 pmIslip Long Island

16h 15m

2 stops

LGW9:35 amLondon Gatwick

Jun 28

LGW12:20 pmLondon Gatwick

27h 20m

2 stops

ISP10:40 amIslip Long Island

$1,858

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 6/11

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Wed 6/17

2:00 pm-8:57 pm

1 stop35h 57m

$925

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 6/11

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Wed 6/17

2:00 pm-8:57 pm

1 stop35h 57m

$995

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 6/19

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Sun 6/28

2:00 pm-8:57 pm

1 stop35h 57m

$999

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 6/19

9:52 pm-10:00 am

1 stop31h 08m

London Gatwick

Fri 6/26

2:00 pm-8:57 pm

1 stop35h 57m

$1,010

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 6/19

2:28 pm-10:00 am

2 stops38h 32m

London Gatwick

Sun 6/28

2:00 pm-8:57 pm

1 stop35h 57m

$1,081

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 6/11

9:52 pm-10:45 am

2 stops31h 53m

London Gatwick

Wed 6/17

2:00 pm-8:57 pm

1 stop35h 57m

$1,091

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 6/19

9:52 pm-10:45 am

2 stops31h 53m

London Gatwick

Fri 6/26

2:00 pm-8:57 pm

1 stop35h 57m

$1,140

Quickest round-trip

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 6/11

9:52 pm-7:55 am

2 stops29h 03m

London Gatwick

Wed 6/17

2:00 pm-8:57 pm

1 stop35h 57m

$1,177

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Mon 7/13

6:00 am-8:45 pm

2 stops33h 45m

London Heathrow

Tue 7/21

8:15 am-11:17 pm

2 stops44h 02m

$1,445

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 6/19

3:07 pm-8:45 pm

2 stops48h 38m

London Heathrow

Sun 6/28

8:40 am-2:12 pm

2 stops58h 32m

$1,549

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 $636. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $708. 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 $629 when looking at flights departing in the morning. Flights to London are more costly in the evening, with an average ticket price of $694. 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 50m
Direct flights	None

The fastest flight from Islip, New York to London takes 15h 50m

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 50m.
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

Wembley

Slough

Croydon

Stansted

Watford

Harrow

Brentwood

Dartford

Cobham

Folkestone

Romford

Uxbridge

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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Cheap flights from Islip, New York to London from $481

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 6/18. 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 is the cheapest airline that flies from Islip Long Island 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

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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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