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

Prices for flights from Islip Long Island Airport to United Kingdom refresh daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The necessary travel and health documents for your United Kingdom 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.

£337 Cheap Flights from Islip to the United Kingdom in 2026

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Find the cheapest flights from Islip, New York to the United Kingdom

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

20:59 - 06:30

ISP

LHR

28h 31m

2 stops

11:55 - 20:04

LHR

ISP

61h 09m

2 stops

£1,008JetBlue

Thu, 14 May - Sun, 17 May

15:05 - 11:45

ISP

LGW

15h 40m

2 stops

15:40 - 22:35

LGW

ISP

35h 55m

2 stops

£1,057Multiple Airlines

Mon, 6 Jul - Tue, 21 Jul

09:59 - 06:45

ISP

LHR

15h 46m

1 stop

09:40 - 16:10

LHR

ISP

11h 30m

1 stop

£1,063Multiple Airlines

Thu, 14 May - Sun, 17 May

09:59 - 14:40

ISP

LGW

23h 41m

2 stops

18:35 - 19:45

LGW

ISP

30h 10m

2 stops

£1,067Multiple Airlines

Thu, 14 May - Sun, 17 May

07:25 - 06:45

ISP

LHR

18h 20m

1 stop

09:40 - 11:05

LHR

ISP

30h 25m

1 stop

£1,081Multiple Airlines

Fri, 15 May - Fri, 22 May

18:40 - 13:55

ISP

LHR

38h 15m

2 stops

07:40 - 12:32

LHR

ISP

33h 52m

2 stops

£1,118Multiple Airlines

Fri, 15 May - Fri, 22 May

15:05 - 11:55

ISP

LHR

15h 50m

2 stops

21:25 - 22:35

LHR

ISP

30h 10m

2 stops

£1,122Multiple Airlines

Mon, 6 Jul - Tue, 21 Jul

11:00 - 10:45

ISP

LGW

42h 45m

2 stops

14:00 - 10:05

LGW

ISP

25h 05m

1 stop

£1,126Multiple Airlines

Fri, 15 May - Fri, 22 May

09:59 - 06:45

ISP

LHR

15h 46m

1 stop

09:40 - 16:10

LHR

ISP

11h 30m

1 stop

£1,150Multiple Airlines

Sun, 17 May - Sun, 24 May

11:00 - 13:35

ISP

GLA

21h 35m

2 stops

14:20 - 10:05

GLA

ISP

24h 45m

2 stops

£1,199Multiple Airlines

Thu, 14 May - Thu, 21 May

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 14/5

20:59-06:30

2 stops28h 31m

London Heathrow

Sun 17/5

11:55-20:04

2 stops61h 09m

£1,008

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Mon 6/7

15:05-11:45

2 stops15h 40m

London Gatwick

Tue 21/7

15:40-22:35

2 stops35h 55m

£1,057

Fastest return journey

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 14/5

09:59-06:45

1 stop15h 46m

London Heathrow

Sun 17/5

09:40-16:10

1 stop11h 30m

£1,063

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Thu 14/5

09:59-14:40

2 stops23h 41m

London Gatwick

Sun 17/5

18:35-19:45

2 stops30h 10m

£1,067

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 15/5

07:25-06:45

1 stop18h 20m

London Heathrow

Fri 22/5

09:40-11:05

1 stop30h 25m

£1,081

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 15/5

18:40-13:55

2 stops38h 15m

London Heathrow

Fri 22/5

07:40-12:32

2 stops33h 52m

£1,118

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Mon 6/7

15:05-11:55

2 stops15h 50m

London Heathrow

Tue 21/7

21:25-22:35

2 stops30h 10m

£1,122

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

Fri 15/5

11:00-10:45

2 stops42h 45m

London Gatwick

Fri 22/5

14:00-10:05

1 stop25h 05m

£1,126

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 17/5

09:59-06:45

1 stop15h 46m

London Heathrow

Sun 24/5

09:40-16:10

1 stop11h 30m

£1,150

IslipGlasgow

ISP - GLA

ISPGLA

Islip Long Island

Thu 14/5

11:00-13:35

2 stops21h 35m

Glasgow Intl

Thu 21/5

14:20-10:05

2 stops24h 45m

£1,199

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to United Kingdom

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

Which airlines fly to United Kingdom?

Virgin Atlantic, British Airways and Aer Lingus are the top three most popular airlines that fly to United Kingdom from Islip, New York according to our data. Virgin Atlantic is the first choice among our users, with 40% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 14 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

Cheap Islip, New York to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to United Kingdom

Fastest flight time	14h 00m
Direct flights	None

The fastest flight from Islip, New York to United Kingdom takes 14h 00m

There are no direct flights from Islip, New York to United Kingdom. There are no popular flight routes from Islip, New York to United Kingdom.

Search flight deals

Frequently asked questions about flying from Islip, New York to the United Kingdom

When did momondo last update prices for flights from Islip Long Island Airport to United Kingdom?
Prices for flights from Islip Long Island Airport to United Kingdom refresh daily.
How old do you have to be to fly from Islip Long Island Airport to United Kingdom?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The necessary travel and health documents for your United Kingdom 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.

Why use momondo?

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

Finding the right flight to United Kingdom from Islip is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.

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

Yes. All flights to United Kingdom from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to United Kingdom?

momondo provides multiple filters to help you find the best flight to United Kingdom from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from Islip and alert you when they change.