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 according to our data. Virgin Atlantic is the first choice among our users, with 43% of people opting to fly with this airline when travelling to London. Keep in mind that there are 11 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.

£205 Cheap Flights from Islip to London (ISP-LON) in 2025

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Find the cheapest flights from Islip to London (ISP-LON)

Round-trip

One-way

Last minute

Cheap return flights

17:05 - 10:00ISP-LGW

35h 55m1 stop

14:00 - 10:37LGW-ISP

25h 37m1 stop

£560

Find Deal

Fri, 3 Oct - Fri, 10 Oct

17:05 - 10:10ISP-LGW

36h 05m1 stop

14:00 - 20:52LGW-ISP

35h 52m1 stop

£578

Find Deal

Sat, 4 Oct - Sat, 11 Oct

17:05 - 06:20ISP-LGW

32h 15m2 stops

14:00 - 10:37LGW-ISP

25h 37m1 stop

£585

Find Deal

Fri, 3 Oct - Fri, 10 Oct

17:05 - 06:20ISP-LGW

32h 15m2 stops

14:00 - 20:52LGW-ISP

35h 52m1 stop

£640

Find Deal

Sat, 4 Oct - Sat, 11 Oct

14:19 - 09:50ISP-LGW

14h 31m2 stops

14:00 - 17:42LGW-ISP

32h 42m1 stop

£690

Find Deal

Wed, 12 Nov - Mon, 17 Nov

14:19 - 09:50ISP-LGW

14h 31m2 stops

14:00 - 19:14LGW-ISP

34h 14m1 stop

£694

Find Deal

Wed, 26 Nov - Mon, 1 Dec

16:58 - 07:30ISP-LGW

33h 32m1 stop

14:00 - 17:42LGW-ISP

32h 42m1 stop

£766

Find Deal

Wed, 12 Nov - Mon, 17 Nov

14:19 - 09:05ISP-LHR

13h 46m2 stops

09:50 - 20:01LHR-ISP

15h 11m2 stops

£839

Find Deal

Fri, 3 Oct - Fri, 10 Oct

14:19 - 07:20ISP-LHR

12h 01m1 stop

14:40 - 20:01LHR-ISP

10h 21m1 stop

£908

Find Deal

Sat, 4 Oct - Sat, 11 Oct

14:19 - 07:20ISP-LHR

12h 01m1 stop

14:40 - 20:01LHR-ISP

10h 21m1 stop

£909

Find Deal

Fri, 3 Oct - Fri, 10 Oct

Fly from

Fly to

Route

Depart

Return

Price

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 3/10

17:05-10:00

1 stop35h 55m

London Gatwick

Fri 10/10

14:00-10:37

1 stop25h 37m

£560

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 4/10

17:05-10:10

1 stop36h 05m

London Gatwick

Sat 11/10

14:00-20:52

1 stop35h 52m

£578

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 3/10

17:05-06:20

2 stops32h 15m

London Gatwick

Fri 10/10

14:00-10:37

1 stop25h 37m

£585

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Sat 4/10

17:05-06:20

2 stops32h 15m

London Gatwick

Sat 11/10

14:00-20:52

1 stop35h 52m

£640

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Wed 12/11

14:19-09:50

2 stops14h 31m

London Gatwick

Mon 17/11

14:00-17:42

1 stop32h 42m

£690

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Wed 26/11

14:19-09:50

2 stops14h 31m

London Gatwick

Mon 1/12

14:00-19:14

1 stop34h 14m

£694

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Wed 12/11

16:58-07:30

1 stop33h 32m

London Gatwick

Mon 17/11

14:00-17:42

1 stop32h 42m

£766

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 3/10

14:19-09:05

2 stops13h 46m

London Heathrow

Fri 10/10

09:50-20:01

2 stops15h 11m

£839

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sat 4/10

14:19-07:20

1 stop12h 01m

London Heathrow

Sat 11/10

14:40-20:01

1 stop10h 21m

£908

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 3/10

14:19-07:20

1 stop12h 01m

London Heathrow

Fri 10/10

14:40-20:01

1 stop10h 21m

£909

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip 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 £424. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Islip 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 morning when flights can be purchased for as low as £424. Flights at midday are often more expensive, with an average ticket price of £500.

When to book flights from Islip to London

Are you open to changing your travel dates? Check out the ideal times to fly from Islip to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Islip to London (ISP to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to London

Direct flights	None

There are no direct flights from Islip to London. There are no popular flight routes from Islip to London.

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How far is Islip Long Island to London by plane?
The straight-line distance from Islip Long Island to London is 3425.8 mi. 12h 01m 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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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.