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.

£559 Cheap Flights from Islip, New York to the United Kingdom in 2026

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

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

18:25 - 10:00ISP Islip Long Island-LGW London Gatwick

34h 35m1 stop Orlando

14:00 - 18:00LGW London Gatwick-ISP Islip Long Island

33h 00m1 stop Orlando

£675Multiple Airlines

Thu, 8 Oct - Thu, 15 Oct

18:25 - 10:00ISP Islip Long Island-LGW London Gatwick

34h 35m1 stop Orlando

12:40 - 18:00LGW London Gatwick-ISP Islip Long Island

34h 20m2 stops Toronto Pearson Intl Orlando

£708Multiple Airlines

Thu, 8 Oct - Thu, 15 Oct

16:20 - 14:40ISP Islip Long Island-LGW London Gatwick

17h 20m2 stops Baltimore/Washington Reykjavik Keflavik Intl

15:40 - 22:35LGW London Gatwick-ISP Islip Long Island

35h 55m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£729Multiple Airlines

Tue, 6 Oct - Tue, 13 Oct

09:40 - 11:55ISP Islip Long Island-LHR London Heathrow

21h 15m2 stops Baltimore/Washington Reykjavik Keflavik Intl

21:25 - 22:35LHR London Heathrow-ISP Islip Long Island

30h 10m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£730Multiple Airlines

Tue, 6 Oct - Tue, 13 Oct

16:05 - 11:55ISP Islip Long Island-LHR London Heathrow

14h 50m2 stops Baltimore/Washington Reykjavik Keflavik Intl

13:05 - 23:35LHR London Heathrow-ISP Islip Long Island

15h 30m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£734Multiple Airlines

Mon, 28 Sep - Fri, 2 Oct

11:55 - 11:55ISP Islip Long Island-LHR London Heathrow

19h 00m2 stops Baltimore/Washington Reykjavik Keflavik Intl

21:25 - 22:10LHR London Heathrow-ISP Islip Long Island

29h 45m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£777Multiple Airlines

Sat, 19 Sep - Thu, 24 Sep

12:55 - 14:40ISP Islip Long Island-LGW London Gatwick

20h 45m2 stops Baltimore/Washington Reykjavik Keflavik Intl

15:40 - 23:35LGW London Gatwick-ISP Islip Long Island

36h 55m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£783Multiple Airlines

Tue, 15 Sep - Sun, 4 Oct

16:05 - 10:50ISP Islip Long Island-LHR London Heathrow

13h 45m2 stops Baltimore/Washington Reykjavik Keflavik Intl

20:35 - 22:45LHR London Heathrow-ISP Islip Long Island

31h 10m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£785Multiple Airlines

Tue, 1 Dec - Sun, 21 Feb

12:50 - 11:55ISP Islip Long Island-LHR London Heathrow

18h 05m2 stops Baltimore/Washington Reykjavik Keflavik Intl

20:35 - 22:35LHR London Heathrow-ISP Islip Long Island

30h 00m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£792Multiple Airlines

Wed, 21 Oct - Tue, 27 Oct

16:20 - 11:55ISP Islip Long Island-LHR London Heathrow

14h 35m2 stops Baltimore/Washington Reykjavik Keflavik Intl

20:35 - 22:35LHR London Heathrow-ISP Islip Long Island

30h 00m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£793Multiple Airlines

Wed, 21 Oct - Tue, 27 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

07:31 - 08:00ISP Islip Long Island-LHR London Heathrow

19h 29m1 stop Boston Logan Intl

10:05 - 18:35LHR London Heathrow-ISP Islip Long Island

13h 30m1 stop Boston Logan Intl

£1,162Multiple Airlines

Wed, 26 Aug - Sun, 30 Aug

07:31 - 06:25ISP Islip Long Island-LHR London Heathrow

17h 54m2 stops Boston Logan Intl New York John F Kennedy Intl

10:05 - 20:59LHR London Heathrow-ISP Islip Long Island

15h 54m1 stop Boston Logan Intl

£1,166Multiple Airlines

Wed, 26 Aug - Sun, 30 Aug

07:31 - 06:25ISP Islip Long Island-LHR London Heathrow

17h 54m2 stops Boston Logan Intl New York John F Kennedy Intl

10:05 - 18:35LHR London Heathrow-ISP Islip Long Island

13h 30m1 stop Boston Logan Intl

£1,167Multiple Airlines

Wed, 26 Aug - Sun, 30 Aug

15:20 - 20:20ISP Islip Long Island-LHR London Heathrow

24h 00m2 stops Baltimore/Washington Reykjavik Keflavik Intl

21:25 - 22:05LHR London Heathrow-ISP Islip Long Island

29h 40m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£1,191Multiple Airlines

Wed, 26 Aug - Sun, 30 Aug

15:20 - 14:40ISP Islip Long Island-LGW London Gatwick

18h 20m2 stops Baltimore/Washington Reykjavik Keflavik Intl

15:40 - 22:05LGW London Gatwick-ISP Islip Long Island

35h 25m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£1,494Multiple Airlines

Wed, 26 Aug - Sun, 30 Aug

10:20 - 11:55ISP Islip Long Island-LHR London Heathrow

20h 35m2 stops Baltimore/Washington Reykjavik Keflavik Intl

21:25 - 22:40LHR London Heathrow-ISP Islip Long Island

30h 15m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£1,575Multiple Airlines

Sun, 30 Aug - Sat, 12 Sep

16:05 - 11:55ISP Islip Long Island-LHR London Heathrow

14h 50m2 stops Baltimore/Washington Reykjavik Keflavik Intl

21:25 - 22:05LHR London Heathrow-ISP Islip Long Island

29h 40m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£1,645Multiple Airlines

Thu, 27 Aug - Sun, 30 Aug

10:20 - 11:55ISP Islip Long Island-LHR London Heathrow

20h 35m2 stops Baltimore/Washington Reykjavik Keflavik Intl

21:25 - 22:05LHR London Heathrow-ISP Islip Long Island

29h 40m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£1,785Multiple Airlines

Fri, 28 Aug - Sun, 30 Aug

10:55 - 14:40ISP Islip Long Island-LGW London Gatwick

22h 45m2 stops Baltimore/Washington Reykjavik Keflavik Intl

13:00 - 22:35LGW London Gatwick-ISP Islip Long Island

14h 35m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£1,794Multiple Airlines

Wed, 26 Aug - Sun, 30 Aug

07:31 - 09:35ISP Islip Long Island-LGW London Gatwick

21h 04m1 stop Boston Logan Intl

12:20 - 20:59LGW London Gatwick-ISP Islip Long Island

13h 39m1 stop Boston Logan Intl

£1,920Multiple Airlines

Wed, 26 Aug - Sun, 30 Aug

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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 Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Thu 8/10

18:25-10:00

1 stop34h 35m

London Gatwick

Thu 15/10

14:00-18:00

1 stop33h 00m

£675

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Thu 8/10

18:25-10:00

1 stop34h 35m

London Gatwick

Thu 15/10

12:40-18:00

2 stops34h 20m

£708

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Tue 6/10

16:20-14:40

2 stops17h 20m

London Gatwick

Tue 13/10

15:40-22:35

2 stops35h 55m

£729

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Tue 6/10

09:40-11:55

2 stops21h 15m

London Heathrow

Tue 13/10

21:25-22:35

2 stops30h 10m

£730

Fastest return journey

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Mon 28/9

16:05-11:55

2 stops14h 50m

London Heathrow

Fri 2/10

13:05-23:35

2 stops15h 30m

£734

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Sat 19/9

11:55-11:55

2 stops19h 00m

London Heathrow

Thu 24/9

21:25-22:10

2 stops29h 45m

£777

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Tue 15/9

12:55-14:40

2 stops20h 45m

London Gatwick

Sun 4/10

15:40-23:35

2 stops36h 55m

£783

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Tue 1/12

16:05-10:50

2 stops13h 45m

London Heathrow

Sun 21/2

20:35-22:45

2 stops31h 10m

£785

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Wed 21/10

12:50-11:55

2 stops18h 05m

London Heathrow

Tue 27/10

20:35-22:35

2 stops30h 00m

£792

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Wed 21/10

16:20-11:55

2 stops14h 35m

London Heathrow

Tue 27/10

20:35-22:35

2 stops30h 00m

£793

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, 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 36% 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

Best price found	£559
Fastest flight time	12h 45m
Direct flights	None

The best one-way flight to United Kingdom from Islip, New York in the past 72 hours is £559. The best return flight deal from Islip, New York to United Kingdom found on momondo in the last 72 hours is £675.

The fastest flight from Islip, New York to United Kingdom takes 12h 45m

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.