Which airlines fly to London Heathrow Airport?

Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to London Heathrow Airport from Islip, New York according to our data. Virgin Atlantic is the first choice among our users, with 41% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 12 different airlines that fly to London Heathrow Airport 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 Heathrow Airport?

Prices for flights from Islip Long Island Airport to London Heathrow Airport are refreshed on a daily basis.

How old do you have to be to fly from Islip Long Island Airport to London Heathrow Airport?

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 London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The necessary travel and health documents for your London Heathrow Airport 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.

£446 Cheap Flights from Islip, New York to London Heathrow Airport in 2026

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Islip, New York to London

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

12:35 - 11:55

ISP

LHR

18h 20m

2 stops

12:15 - 23:35

LHR

ISP

15h 20m

2 stops

£809Multiple Airlines

Fri, 23 Oct - Mon, 26 Oct

11:30 - 06:30

ISP

LHR

38h 00m

2 stops

08:40 - 14:12

LHR

ISP

34h 32m

2 stops

£1,042JetBlue

Thu, 11 Jun - Sun, 14 Jun

10:00 - 20:20

ISP

LHR

29h 20m

2 stops

13:05 - 10:56

LHR

ISP

26h 51m

2 stops

£1,103Multiple Airlines

Mon, 8 Jun - Mon, 15 Jun

11:30 - 15:00

ISP

LHR

22h 30m

2 stops

07:40 - 09:16

LHR

ISP

30h 36m

2 stops

£1,140Multiple Airlines

Mon, 15 Jun - Fri, 10 Jul

11:30 - 16:00

ISP

LHR

23h 30m

2 stops

07:40 - 09:16

LHR

ISP

30h 36m

2 stops

£1,143Multiple Airlines

Fri, 3 Jul - Fri, 10 Jul

12:25 - 09:30

ISP

LHR

16h 05m

2 stops

08:40 - 11:30

LHR

ISP

31h 50m

2 stops

£1,148JetBlue

Tue, 16 Jun - Mon, 22 Jun

11:31 - 13:55

ISP

LHR

21h 24m

2 stops

21:10 - 09:16

LHR

ISP

41h 06m

2 stops

£1,180Multiple Airlines

Thu, 9 Jul - Thu, 16 Jul

11:30 - 12:40

ISP

LHR

20h 10m

2 stops

07:40 - 23:46

LHR

ISP

21h 06m

2 stops

£1,182Multiple Airlines

Fri, 3 Jul - Fri, 10 Jul

11:30 - 13:30

ISP

LHR

21h 00m

2 stops

18:10 - 23:47

LHR

ISP

34h 37m

2 stops

£1,191Multiple Airlines

Sun, 14 Jun - Sun, 12 Jul

11:30 - 12:40

ISP

LHR

20h 10m

2 stops

06:20 - 20:44

LHR

ISP

43h 24m

2 stops

£1,221Multiple Airlines

Fri, 3 Jul - Fri, 10 Jul

JetBlue flights from Islip, New York to London Heathrow Airport

Our best JetBlue deals on Islip, New York to London Heathrow Airport flight tickets

JetBlue

11 Jun

ISP11:30Islip Long Island

38h 00m

2 stops

LHR06:30London Heathrow

14 Jun

LHR08:40London Heathrow

34h 32m

2 stops

ISP14:12Islip Long Island

£1,042

JetBlue

16 Jun

ISP12:25Islip Long Island

16h 05m

2 stops

LHR09:30London Heathrow

22 Jun

LHR08:40London Heathrow

31h 50m

2 stops

ISP11:30Islip Long Island

£1,148

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 23/10

12:35-11:55

2 stops18h 20m

London Heathrow

Mon 26/10

12:15-23:35

2 stops15h 20m

£809

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 11/6

11:30-06:30

2 stops38h 00m

London Heathrow

Sun 14/6

08:40-14:12

2 stops34h 32m

£1,042

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Mon 8/6

10:00-20:20

2 stops29h 20m

London Heathrow

Mon 15/6

13:05-10:56

2 stops26h 51m

£1,103

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Mon 15/6

11:30-15:00

2 stops22h 30m

London Heathrow

Fri 10/7

07:40-09:16

2 stops30h 36m

£1,140

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 3/7

11:30-16:00

2 stops23h 30m

London Heathrow

Fri 10/7

07:40-09:16

2 stops30h 36m

£1,143

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Tue 16/6

12:25-09:30

2 stops16h 05m

London Heathrow

Mon 22/6

08:40-11:30

2 stops31h 50m

£1,148

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Thu 9/7

11:31-13:55

2 stops21h 24m

London Heathrow

Thu 16/7

21:10-09:16

2 stops41h 06m

£1,180

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 3/7

11:30-12:40

2 stops20h 10m

London Heathrow

Fri 10/7

07:40-23:46

2 stops21h 06m

£1,182

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Sun 14/6

11:30-13:30

2 stops21h 00m

London Heathrow

Sun 12/7

18:10-23:47

2 stops34h 37m

£1,191

IslipLondon

ISP - LHR

ISPLHR

Islip Long Island

Fri 3/7

11:30-12:40

2 stops20h 10m

London Heathrow

Fri 10/7

06:20-20:44

2 stops43h 24m

£1,221

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to London Heathrow Airport

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 Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Islip, New York is on a Monday. momondo users have found tickets for Monday departures for as low as £399. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £472.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Islip, New York to London Heathrow Airport in the morning for as low as £420. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £447 on average. Flights to London Heathrow Airport from Islip, New York in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

When to book flights from Islip, New York to London Heathrow Airport

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

Estimated return price

Cheap Islip, New York to London Heathrow Airport (ISP to LHR) flight deals and tips

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

Fastest flight time	20h 10m
Direct flights	None

The fastest flight from Islip, New York to London Heathrow Airport takes 20h 10m

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

Search flight deals

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

How far is Islip Long Island to London Heathrow by plane?
London Heathrow is 3412.8 mi away from Islip Long Island. 20h 10m is a normal flight duration for this route.
When did momondo last update prices for flights from Islip Long Island Airport to London Heathrow Airport?
Prices for flights from Islip Long Island Airport to London Heathrow Airport are refreshed on a daily basis.
How old do you have to be to fly from Islip Long Island Airport to London Heathrow Airport?
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 London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport 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.

Eastbourne

Milton Keynes

Gatwick

Luton

Wembley

Stratford-upon-Avon

Slough

Northampton

Maidstone

Swindon

Southend-on-Sea

Ipswich

Canterbury

Ilford

Hayes

Guildford

Poole

Folkestone

Chelmsford

Bedford

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 allows you to filter the results for Islip to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Islip to London?

momondo helps you find the best flight between Islip and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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