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.

$609 Cheap Flights from Islip to London in 2025/26

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Find the cheapest flights from Islip, New York to London

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7:56 pm - 10:00 amISP-LGW

33h 04m1 stop

2:00 pm - 8:55 amLGW-ISP

23h 55m1 stop

$609Multiple Airlines

Find Deal

Sat, Jan 10 - Sat, Jan 17

7:56 pm - 6:00 amISP-LGW

29h 04m2 stops

2:00 pm - 7:03 pmLGW-ISP

34h 03m1 stop

$636Multiple Airlines

Find Deal

Sat, Jan 10 - Sat, Jan 17

12:30 pm - 12:40 pmISP-LHR

19h 10m2 stops

9:20 am - 4:10 pmLHR-ISP

11h 50m1 stop

$1,723Multiple Airlines

Find Deal

Thu, Jan 8 - Thu, Jan 15

12:30 pm - 6:55 amISP-LHR

13h 25m1 stop

9:20 am - 4:10 pmLHR-ISP

11h 50m1 stop

$2,612Multiple Airlines

Find Deal

Thu, Jan 8 - Thu, Jan 15

12:30 pm - 7:45 amISP-LHR

14h 15m2 stops

9:20 am - 4:10 pmLHR-ISP

11h 50m1 stop

$2,641Multiple Airlines

Find Deal

Sat, Jan 10 - Sat, Jan 17

12:30 pm - 6:55 amISP-LHR

13h 25m1 stop

9:20 am - 4:10 pmLHR-ISP

11h 50m1 stop

$3,151Multiple Airlines

Find Deal

Sat, Jan 10 - Sat, Jan 17

Fly from

Fly to

Route

Depart

Return

Price

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 1/10

7:56 pm-10:00 am

1 stop33h 04m

London Gatwick

Sat 1/17

2:00 pm-8:55 am

1 stop23h 55m

$609

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 1/10

7:56 pm-6:00 am

2 stops29h 04m

London Gatwick

Sat 1/17

2:00 pm-7:03 pm

1 stop34h 03m

$636

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 1/8

12:30 pm-12:40 pm

2 stops19h 10m

London Heathrow

Thu 1/15

9:20 am-4:10 pm

1 stop11h 50m

$1,723

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 1/8

12:30 pm-6:55 am

1 stop13h 25m

London Heathrow

Thu 1/15

9:20 am-4:10 pm

1 stop11h 50m

$2,612

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sat 1/10

12:30 pm-7:45 am

2 stops14h 15m

London Heathrow

Sat 1/17

9:20 am-4:10 pm

1 stop11h 50m

$2,641

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sat 1/10

12:30 pm-6:55 am

1 stop13h 25m

London Heathrow

Sat 1/17

9:20 am-4:10 pm

1 stop11h 50m

$3,151

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 Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $641. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $686. 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

Fastest flight time	15h 56m
Direct flights	None

The fastest flight from Islip, New York to London takes 15h 56m

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 25m.
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

Romford

Watford

Ilford

Cobham

Folkestone

Uxbridge

Stansted

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 $609

This is the cheapest round-trip 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 1/10. 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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Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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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

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

How far is Islip Long Island to London by plane?

When did momondo last update prices for flights from Islip Long Island Airport to London?

How old do you have to be to fly from Islip Long Island Airport to London?

What documentation or ID do you need to fly to London?

Traveling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Islip to London?

Can I find flights from Islip to London with flexible booking policies on momondo?

How can momondo help me find flights 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?

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