What airlines fly to London?

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London from Islip, New York according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to London. Keep in mind that there are 22 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 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.

$1,023 Cheap Flights from Islip to London in 2025/26

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Find the cheapest flights from Islip, New York to London

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12:30 pm - 8:20 amISP-LGW

38h 50m2 stops

2:00 pm - 7:45 pmLGW-ISP

34h 45m1 stop

$1,126Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

6:40 pm - 10:00 amISP-LGW

34h 20m1 stop

2:00 pm - 7:45 pmLGW-ISP

34h 45m1 stop

$1,296Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

6:00 am - 11:55 amISP-LHR

24h 55m1 stop

9:50 am - 7:45 pmLHR-ISP

38h 55m2 stops

$1,596Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

9:59 am - 9:15 amISP-LHR

18h 16m2 stops

1:00 pm - 11:05 amLHR-ISP

27h 05m2 stops

$1,737Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

12:30 pm - 11:25 amISP-LHR

17h 55m2 stops

9:20 am - 4:10 pmLHR-ISP

11h 50m1 stop

$2,381Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

7:25 am - 9:15 amISP-LHR

20h 50m2 stops

1:25 pm - 11:05 amLHR-ISP

26h 40m3 stops

$2,383Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

12:30 pm - 7:50 amISP-LHR

14h 20m1 stop

9:40 am - 4:10 pmLHR-ISP

11h 30m1 stop

$2,626Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

12:30 pm - 6:55 amISP-LHR

13h 25m1 stop

9:20 am - 4:10 pmLHR-ISP

11h 50m1 stop

$2,726Multiple Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

Fly from

Fly to

Route

Depart

Return

Price

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

sáb. 1/3

12:30 pm-8:20 am

2 stops38h 50m

London Gatwick

sáb. 1/10

2:00 pm-7:45 pm

1 stop34h 45m

$1,126

IslipLondon

ISP - LGW

ISPLGW

Islip Long Island

sáb. 1/3

6:40 pm-10:00 am

1 stop34h 20m

London Gatwick

sáb. 1/10

2:00 pm-7:45 pm

1 stop34h 45m

$1,296

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

sáb. 1/3

6:00 am-11:55 am

1 stop24h 55m

London Heathrow

sáb. 1/10

9:50 am-7:45 pm

2 stops38h 55m

$1,596

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

sáb. 1/3

9:59 am-9:15 am

2 stops18h 16m

London Heathrow

sáb. 1/10

1:00 pm-11:05 am

2 stops27h 05m

$1,737

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

sáb. 1/3

12:30 pm-11:25 am

2 stops17h 55m

London Heathrow

sáb. 1/10

9:20 am-4:10 pm

1 stop11h 50m

$2,381

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

sáb. 1/3

7:25 am-9:15 am

2 stops20h 50m

London Heathrow

sáb. 1/10

1:25 pm-11:05 am

3 stops26h 40m

$2,383

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

sáb. 1/3

12:30 pm-7:50 am

1 stop14h 20m

London Heathrow

sáb. 1/10

9:40 am-4:10 pm

1 stop11h 30m

$2,626

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

sáb. 1/3

12:30 pm-6:55 am

1 stop13h 25m

London Heathrow

sáb. 1/10

9:20 am-4:10 pm

1 stop11h 50m

$2,726

Flights are sorted by cheapest round-trip 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?

The cheapest day to depart from Islip, New York to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $633. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $675. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $500 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $673. 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

Direct flights	None

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

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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 13h 25m.
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.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Chelmsford

Wembley

Folkestone

Romford

Ilford

Cobham

Stansted

Harrow

Watford

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.