Which airlines fly to London?

Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to London from Islip, New York according to our data. Virgin Atlantic is the first choice among our users, with 39% of people opting to fly with this airline when travelling to London. Keep in mind that there are 12 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 updated daily.

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.

£827 Cheap Flights from Islip to London in 2025/26

1 adult

0 bags

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Find the cheapest flights from Islip, New York to London

Round-trip

One-way

Cheap return flights

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12:30 - 08:05

ISP

LHR

14h 35m2 stops

08:50 - 19:45

LHR

ISP

15h 55m2 stops

£827Multiple Airlines

Sun, 25 Jan - Sun, 1 Feb

12:30 - 09:15

ISP

LHR

15h 45m2 stops

06:50 - 19:45

LHR

ISP

17h 55m3 stops

£966Multiple Airlines

Sun, 25 Jan - Sun, 1 Feb

12:30 - 06:55

ISP

LHR

13h 25m1 stop

19:55 - 19:45

LHR

ISP

28h 50m2 stops

£1,189Multiple Airlines

Sun, 25 Jan - Sun, 1 Feb

12:30 - 06:55

ISP

LHR

13h 25m1 stop

09:20 - 16:10

LHR

ISP

11h 50m1 stop

£1,470Multiple Airlines

Sun, 25 Jan - Sun, 1 Feb

09:47 - 16:50

ISP

LHR

27h 03m2 stops

18:10 - 09:09

LHR

ISP

43h 59m2 stops

£1,518Multiple Airlines

Thu, 19 Mar - Thu, 2 Apr

12:30 - 06:55

ISP

LHR

13h 25m1 stop

12:15 - 11:05

LHR

ISP

27h 50m2 stops

£3,639Multiple Airlines

Fri, 23 Jan - Wed, 28 Jan

12:30 - 06:55

ISP

LHR

13h 25m1 stop

20:35 - 11:05

LHR

ISP

43h 30m2 stops

£3,640Multiple Airlines

Fri, 23 Jan - Mon, 26 Jan

12:30 - 06:55

ISP

LHR

13h 25m1 stop

12:15 - 11:05

LHR

ISP

27h 50m2 stops

£3,641Multiple Airlines

Fri, 23 Jan - Tue, 27 Jan

09:59 - 06:55

ISP

LHR

15h 56m1 stop

06:00 - 19:45

LHR

ISP

18h 45m2 stops

£3,650Multiple Airlines

Tue, 20 Jan - Thu, 29 Jan

12:30 - 06:55

ISP

LHR

13h 25m1 stop

06:00 - 19:45

LHR

ISP

18h 45m2 stops

£3,651Multiple Airlines

Tue, 20 Jan - Wed, 28 Jan

Fly from

Fly to

Route

Depart

Return

Price

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 25/1

12:30-08:05

2 stops14h 35m

London Heathrow

Sun 1/2

08:50-19:45

2 stops15h 55m

£827

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 25/1

12:30-09:15

2 stops15h 45m

London Heathrow

Sun 1/2

06:50-19:45

3 stops17h 55m

£966

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 25/1

12:30-06:55

1 stop13h 25m

London Heathrow

Sun 1/2

19:55-19:45

2 stops28h 50m

£1,189

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 25/1

12:30-06:55

1 stop13h 25m

London Heathrow

Sun 1/2

09:20-16:10

1 stop11h 50m

£1,470

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 19/3

09:47-16:50

2 stops27h 03m

London Heathrow

Thu 2/4

18:10-09:09

2 stops43h 59m

£1,518

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 23/1

12:30-06:55

1 stop13h 25m

London Heathrow

Wed 28/1

12:15-11:05

2 stops27h 50m

£3,639

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 23/1

12:30-06:55

1 stop13h 25m

London Heathrow

Mon 26/1

20:35-11:05

2 stops43h 30m

£3,640

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 23/1

12:30-06:55

1 stop13h 25m

London Heathrow

Tue 27/1

12:15-11:05

2 stops27h 50m

£3,641

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Tue 20/1

09:59-06:55

1 stop15h 56m

London Heathrow

Thu 29/1

06:00-19:45

2 stops18h 45m

£3,650

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Tue 20/1

12:30-06:55

1 stop13h 25m

London Heathrow

Wed 28/1

06:00-19:45

2 stops18h 45m

£3,651

Flights are sorted by cheapest return 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?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £415. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Islip, New York to London for around £472.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £422. Flights at midday are often more expensive, with an average ticket price of £503.

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 return 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 35m
Direct flights	None

The fastest flight from Islip, New York to London takes 14h 35m

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

How far is Islip Long Island to London by plane?
The straight-line distance from Islip Long Island to London is 3425.8 mi. 14h 35m is a normal flight duration for this route.
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 updated daily.
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.

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Worthing

Colchester

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Hounslow

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Why use momondo?

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

It is quick and easy to find Islip to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo enables you to select and highlight flights to London from Islip with this policy.

How can momondo help me find flights from Islip to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Islip.

I’m not ready to book a flight from Islip to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Islip. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.