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 $758 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 Delta.

$758 CHEAP FLIGHTS from Islip to London (ISP - LON)

ISP - LON

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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

Thu, Nov 13 - Fri, Nov 14

11:40 am - 10:00 amISP-LGW

17h 20m2 stops

2:00 pm - 10:37 amLGW-ISP

25h 37m1 stop

$758Multiple Airlines

Find Deal

Thu, Nov 13 - Fri, Nov 14

11:40 am - 10:00 amISP-LGW

17h 20m2 stops

2:00 pm - 10:37 amLGW-ISP

25h 37m1 stop

$759Multiple Airlines

Find Deal

Wed, Oct 22 - Wed, Oct 29

4:58 pm - 10:00 amISP-LGW

36h 02m1 stop

1:00 pm - 5:42 pmLGW-ISP

32h 42m2 stops

$792Multiple Airlines

Find Deal

Thu, Oct 16 - Wed, Oct 22

9:37 pm - 10:00 amISP-LGW

31h 23m1 stop

2:00 pm - 8:42 pmLGW-ISP

35h 42m1 stop

$794Multiple Airlines

Find Deal

Thu, Oct 16 - Wed, Oct 22

9:37 pm - 10:00 amISP-LGW

31h 23m1 stop

1:05 pm - 8:42 pmLGW-ISP

36h 37m2 stops

$833Multiple Airlines

Find Deal

Wed, Oct 22 - Wed, Oct 29

11:35 am - 8:45 pmISP-LHR

28h 10m2 stops

7:25 am - 1:02 pmLHR-ISP

33h 37m2 stops

$950JetBlue

Find Deal

Thu, Oct 16 - Wed, Oct 22

7:30 am - 9:05 amISP-LHR

20h 35m2 stops

9:50 am - 7:45 pmLHR-ISP

14h 55m2 stops

$1,065Multiple Airlines

Find Deal

Thu, Oct 16 - Wed, Oct 22

9:59 am - 6:30 amISP-LHR

15h 31m1 stop

6:00 am - 7:45 pmLHR-ISP

18h 45m2 stops

$1,718Multiple Airlines

Find Deal

Thu, Oct 16 - Wed, Oct 22

9:59 am - 6:30 amISP-LHR

15h 31m1 stop

8:25 am - 4:15 pmLHR-ISP

12h 50m1 stop

$1,979Multiple Airlines

Find Deal

Thu, Nov 13 - Sun, Nov 23

12:40 pm - 11:25 amISP-LHR

17h 45m2 stops

9:20 am - 4:15 pmLHR-ISP

11h 55m1 stop

$2,556Multiple Airlines

Find Deal

Cheapest round-trip

$758

Multiple Airlines

Thu 11/13Fri 11/14

ISP - LGW • 2 stops

Cheapest one-way

Multiple Airlines

Tue 9/16

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 $758 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

$758 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 $758 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