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Cheap flights from Islip, New York to London from $374

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Islip, New York to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:25 pm - 10:00 amISP  Islip Long Island-LGW London Gatwick
34h 35m1 stop Orlando
Multiple Airlines Logo
2:00 pm - 6:00 pmLGW  London Gatwick-ISP Islip Long Island
33h 00m1 stop Orlando
$854Multiple Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
6:25 pm - 10:00 amISP  Islip Long Island-LGW London Gatwick
34h 35m1 stop Orlando
Multiple Airlines Logo
1:00 pm - 7:45 pmLGW  London Gatwick-ISP Islip Long Island
35h 45m2 stops Barcelona-El Prat Boston Logan Intl
$908Multiple Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
4:20 pm - 2:40 pmISP  Islip Long Island-LGW London Gatwick
17h 20m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 10:40 pmLGW  London Gatwick-ISP Islip Long Island
36h 00m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$984Multiple Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
4:05 pm - 10:55 amISP  Islip Long Island-LGW London Gatwick
13h 50m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
11:55 am - 11:30 pmLGW  London Gatwick-ISP Islip Long Island
16h 35m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$991Multiple Airlines
Tue, Dec 1 - Fri, Dec 11
Multiple Airlines Logo
10:55 am - 10:50 amISP  Islip Long Island-LHR London Heathrow
18h 55m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
12:15 pm - 9:30 pmLHR  London Heathrow-ISP Islip Long Island
14h 15m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$992Multiple Airlines
Mon, Feb 22 - Tue, Mar 2
Multiple Airlines Logo
12:30 pm - 7:30 pmISP  Islip Long Island-LHR London Heathrow
26h 00m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
12:15 pm - 9:40 pmLHR  London Heathrow-ISP Islip Long Island
14h 25m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$992Multiple Airlines
Wed, Nov 11 - Wed, Nov 18
Multiple Airlines Logo
4:20 pm - 2:40 pmISP  Islip Long Island-LGW London Gatwick
17h 20m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 10:40 pmLGW  London Gatwick-ISP Islip Long Island
36h 00m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$993Multiple Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
3:50 pm - 10:50 amISP  Islip Long Island-LHR London Heathrow
14h 00m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
8:35 pm - 9:30 pmLHR  London Heathrow-ISP Islip Long Island
29h 55m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$994Multiple Airlines
Wed, Feb 3 - Mon, Feb 8
Multiple Airlines Logo
4:20 pm - 11:55 amISP  Islip Long Island-LHR London Heathrow
14h 35m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
9:25 pm - 10:40 pmLHR  London Heathrow-ISP Islip Long Island
30h 15m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$994Multiple Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
4:20 pm - 2:40 pmISP  Islip Long Island-LGW London Gatwick
17h 20m2 stops Baltimore/Washington Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 10:40 pmLGW  London Gatwick-ISP Islip Long Island
36h 00m2 stops Reykjavik Keflavik Intl Baltimore/Washington
$994Multiple Airlines
Tue, Oct 6 - Tue, Oct 13

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

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Route

Depart

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Price

Cheapest round-trip

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Thu 10/15

6:25 pm-10:00 am

1 stop34h 35m

London Gatwick

Thu 10/22

2:00 pm-6:00 pm

1 stop33h 00m

$854

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Thu 10/15

6:25 pm-10:00 am

1 stop34h 35m

London Gatwick

Thu 10/22

1:00 pm-7:45 pm

2 stops35h 45m

$908

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Tue 10/6

4:20 pm-2:40 pm

2 stops17h 20m

London Gatwick

Tue 10/13

3:40 pm-10:40 pm

2 stops36h 00m

$984
Quickest round-trip

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Tue 12/1

4:05 pm-10:55 am

2 stops13h 50m

London Gatwick

Fri 12/11

11:55 am-11:30 pm

2 stops16h 35m

$991

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Mon 2/22

10:55 am-10:50 am

2 stops18h 55m

London Heathrow

Tue 3/2

12:15 pm-9:30 pm

2 stops14h 15m

$992

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Wed 11/11

12:30 pm-7:30 pm

2 stops26h 00m

London Heathrow

Wed 11/18

12:15 pm-9:40 pm

2 stops14h 25m

$992

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Tue 10/6

4:20 pm-2:40 pm

2 stops17h 20m

London Gatwick

Tue 10/13

3:40 pm-10:40 pm

2 stops36h 00m

$993

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Wed 2/3

3:50 pm-10:50 am

2 stops14h 00m

London Heathrow

Mon 2/8

8:35 pm-9:30 pm

2 stops29h 55m

$994

IslipLondon

ISP Islip Long Island - LHR London Heathrow

ISPLHR

Islip Long Island

Tue 10/6

4:20 pm-11:55 am

2 stops14h 35m

London Heathrow

Tue 10/13

9:25 pm-10:40 pm

2 stops30h 15m

$994

IslipLondon

ISP Islip Long Island - LGW London Gatwick

ISPLGW

Islip Long Island

Tue 10/6

4:20 pm-2:40 pm

2 stops17h 20m

London Gatwick

Tue 10/13

3:40 pm-10:40 pm

2 stops36h 00m

$994

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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?

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 $759. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $797. 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 in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $740 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $801. 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

Best Price Found

$374

Fastest flight time

12h 55m

Direct flights

None
The best one-way flight to London from Islip, New York in the past 72 hours is $374. The best round-trip flight deal from Islip, New York to London found on momondo in the last 72 hours is $854.
The fastest flight from Islip, New York to London takes 12h 55m
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

Frequently asked questions about flying from Islip, New York to London

  • 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 12h 55m.

  • 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.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Hayes
Wembley
Luton
Croydon
Dover
Richmond
Stansted
Kingston upon Thames
Harrow
Cobham
Watford
Slough
Eastbourne
Worthing
Hook
Uxbridge
Romford

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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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport