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 $1,081 for a round-trip ticket. 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.

$1,081 CHEAP FLIGHTS from Islip to London (ISP - LON)

ISP - LON

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

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Flight Deals

Cheap Flights from Islip to London (ISP-LON)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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, Dec 15 - Mon, Dec 22

6:00 am - 9:00 amISP-LGW

22h 00m1 stop

12:30 pm - 11:59 pmLGW-ISP

16h 29m1 stop

$1,081Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

11:50 am - 9:30 amISP-LHR

16h 40m2 stops

8:05 am - 6:45 pmLHR-ISP

39h 40m2 stops

$1,082JetBlue

Find Deal

Mon, Dec 15 - Mon, Dec 22

10:19 am - 10:00 amISP-LGW

18h 41m1 stop

2:00 pm - 11:25 amLGW-ISP

26h 25m1 stop

$1,089Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

7:08 pm - 9:45 amISP-LGW

33h 37m2 stops

2:00 pm - 11:25 amLGW-ISP

26h 25m1 stop

$1,556Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

2:25 pm - 10:55 amISP-LGW

15h 30m2 stops

2:00 pm - 11:25 amLGW-ISP

26h 25m1 stop

$1,590Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

12:40 pm - 6:55 amISP-LHR

13h 15m1 stop

6:30 pm - 7:45 pmLHR-ISP

30h 15m2 stops

$2,030Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

12:40 pm - 9:15 amISP-LHR

15h 35m2 stops

9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

$2,607Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

12:40 pm - 6:55 amISP-LHR

13h 15m1 stop

9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

$2,809Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

9:59 am - 7:10 amISP-LHR

16h 11m2 stops

8:50 am - 7:45 pmLHR-ISP

15h 55m2 stops

$5,521Multiple Airlines

Find Deal

Mon, Dec 15 - Mon, Dec 22

9:59 am - 7:10 amISP-LHR

16h 11m3 stops

8:50 am - 7:45 pmLHR-ISP

15h 55m2 stops

$5,560Multiple Airlines

Find Deal

Cheapest round-trip

$1,081

Multiple Airlines

Mon 12/15Mon 12/22

ISP - LGW • 1 stop

Cheapest one-way

Multiple Airlines

Sun 11/2

ISP - LON • multi-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to London!

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 $1,081 for a round-trip ticket.
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

Flights to other cities

Origins

Return flight deals

Information on your arrival and departure airports

Islip (ISP)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

ISP - LON

$1,081 Find Cheap Flights from Islip to London

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

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

Everything you should know

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 $1,081 for a round-trip ticket.

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