What is the cheapest flight from Islip to London?

In the last 3 days, the lowest price for a flight from Islip to London was $463 for a one-way ticket and $621 for a round-trip. Visit our flight page for the latest deals!>/a>

Do I need a passport to fly between Islip and London?

A passport is required to fly from Islip to London. Visit our flight page for the latest deals!>/a>

Which aircraft models fly most regularly from Islip to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Islip to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to London. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Islip is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Islip to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Islip with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

What are the most popular airlines flying to London?

The most popular airline among KAYAK users flying to London is British Airways, followed by United Airlines and Virgin Atlantic.

Cheap Flights from Islip to London | KAYAK

ISP - LON

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Cheapest round-trip

$621

Multiple Airlines

Mon 3/2Mon 3/9

ISP - LGW • 1 stop

Cheapest one-way

$463

Multiple Airlines

Mon 6/15

ISP - LGW • 1 stop

Start a new search

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We hope you love your trip to London!

Flight Deals

Cheap Flights from Islip to London (ISP-LON)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Islip to London

Mon, Mar 2 - Mon, Mar 9

8:23 am - 10:00 am

ISP

LGW

20h 37m

1 stop

2:00 pm - 11:10 am

LGW

ISP

49h 10m

2 stops

$621Multiple Airlines

Thu, Feb 26 - Thu, Mar 5

3:34 pm - 10:00 am

ISP

LGW

13h 26m

1 stop

2:00 pm - 12:47 pm

LGW

ISP

27h 47m

1 stop

$657Multiple Airlines

Thu, Feb 26 - Thu, Mar 5

3:34 pm - 10:00 am

ISP

LGW

13h 26m

1 stop

2:00 pm - 11:10 am

LGW

ISP

50h 10m

2 stops

$702Multiple Airlines

Mon, Mar 2 - Mon, Mar 9

9:39 am - 9:05 pm

ISP

LHR

30h 26m

2 stops

6:30 am - 8:47 am

LHR

ISP

30h 17m

2 stops

$1,154Multiple Airlines

Sat, Feb 28 - Sat, Mar 7

9:39 am - 1:25 pm

ISP

LHR

22h 46m

2 stops

8:50 am - 7:47 am

LHR

ISP

27h 57m

2 stops

$1,235Multiple Airlines

Mon, Mar 2 - Mon, Mar 9

9:59 am - 7:00 am

ISP

LHR

16h 01m

1 stop

11:40 am - 6:44 pm

LHR

ISP

11h 04m

1 stop

$1,283Multiple Airlines

Tue, May 12 - Tue, May 19

9:59 am - 8:00 am

ISP

LHR

17h 01m

1 stop

11:00 am - 7:45 pm

LHR

ISP

13h 45m

1 stop

$1,297Multiple Airlines

Thu, Feb 26 - Thu, Mar 5

9:59 am - 7:00 am

ISP

LHR

16h 01m

1 stop

11:40 am - 6:44 pm

LHR

ISP

12h 04m

1 stop

$1,301Multiple Airlines

Sun, Mar 15 - Sun, Mar 22

9:59 am - 7:00 am

ISP

LHR

17h 01m

1 stop

8:45 pm - 6:44 pm

LHR

ISP

25h 59m

2 stops

$1,360Multiple Airlines

Sat, Feb 28 - Sat, Mar 7

9:59 am - 6:30 am

ISP

LHR

15h 31m

2 stops

8:50 pm - 5:44 pm

LHR

ISP

25h 54m

3 stops

$1,367Multiple Airlines

Booking Insights

When to book flights from Islip to London

Are your dates flexible? Find out the best times to travel from Islip to London based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from Islip to London?
In the last 3 days, the lowest price for a flight from Islip to London was $463 for a one-way ticket and $621 for a round-trip.
Do I need a passport to fly between Islip and London?
A passport is required to fly from Islip to London.
Which aircraft models fly most regularly from Islip to London?
We unfortunately don’t have that data for this specific route.
How does KAYAK find such low prices on flights from Islip to London?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Islip is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Islip to London?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Islip with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to London?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Islip to London

Airports

Cabin class

Complete your trip

Direct Flights

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Information on your arrival and departure airports

Islip (ISP)

ISP - LON

$463 Find Cheap Flights from Islip to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

Everything you should know

Cheap Flights from Islip to London (ISP-LON)

Recent round-trip flight deals from Islip to London

Recent one-way flight deals from Islip to London

When to book flights from Islip to London

FAQs for booking flights from Islip to London

What is the cheapest flight from Islip to London?

In the last 3 days, the lowest price for a flight from Islip to London was $463 for a one-way ticket and $621 for a round-trip.

Do I need a passport to fly between Islip and London?

A passport is required to fly from Islip to London.

Which aircraft models fly most regularly from Islip to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Islip to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Islip to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Islip with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Islip to London

Information on your arrival and departure airports

Cabin class types available on flights from Islip to London

Complete your trip to London with a hotel stay or car rental

Find direct flights to and from Islip and London

Flights to other popular destinations

Flights from domestic origins to London

Find deals for your return flight