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

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 Illinois to Islip. 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 Illinois to Islip?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Illinois 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 Illinois to Islip?

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 Islip with an airline and back to Illinois 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 Illinois to Islip?

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 Islip from Illinois 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>

$80 CHEAP FLIGHTS from Illinois to Islip

ISP

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Flight Deals

Cheap Flights from Illinois to Islip

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Islip 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

Last minute

Recent round-trip flight deals from Illinois to Islip

Mon, Sep 29 - Thu, Oct 2

8:49 pm - 10:40 amORD-ISP

12h 51m1 stop

11:40 am - 7:44 pmISP-ORD

9h 04m1 stop

$168Frontier

Find Deal

Thu, Oct 30 - Sun, Nov 2

8:40 pm - 10:37 amSTL-ISP

12h 57m2 stops

9:27 pm - 9:40 amISP-STL

13h 13m1 stop

$202Frontier

Find Deal

Fri, Oct 3 - Sun, Oct 5

8:49 pm - 10:55 amORD-ISP

13h 06m1 stop

11:25 am - 7:44 pmISP-ORD

9h 19m1 stop

$224Frontier

Find Deal

Thu, Nov 6 - Sat, Nov 8

3:18 pm - 8:54 amORD-ISP

16h 36m2 stops

11:40 am - 11:29 pmISP-ORD

12h 49m2 stops

$229Frontier

Find Deal

Thu, Dec 4 - Mon, Dec 8

9:45 am - 3:20 pmSTL-ISP

4h 35m1 stop

3:55 pm - 10:00 pmISP-STL

7h 05m1 stop

$239Southwest

Find Deal

Thu, Dec 4 - Mon, Dec 8

1:15 pm - 10:05 pmSTL-ISP

7h 50m2 stops

3:55 pm - 10:00 pmISP-STL

7h 05m1 stop

$244Southwest

Find Deal

Tue, Oct 28 - Fri, Oct 31

5:28 pm - 10:37 amORD-ISP

16h 09m1 stop

2:25 pm - 11:28 pmISP-ORD

10h 03m1 stop

$246Multiple Airlines

Find Deal

Sun, Sep 28 - Sun, Oct 5

8:49 pm - 10:40 amORD-ISP

12h 51m1 stop

11:25 am - 7:44 pmISP-ORD

9h 19m1 stop

$256Frontier

Find Deal

Fri, Dec 5 - Sun, Dec 7

6:05 am - 12:15 pmSTL-ISP

5h 10m1 stop

3:25 pm - 11:50 pmISP-STL

9h 25m1 stop

$282Southwest

Find Deal

Wed, Oct 1 - Sun, Oct 5

5:17 pm - 10:55 amORD-ISP

16h 38m1 stop

11:25 am - 5:53 pmISP-ORD

7h 28m1 stop

$285Multiple Airlines

Find Deal

Cheapest round-trip

$168

Frontier

Mon 9/29Thu 10/2

ORD - ISP • 1 stop

Cheapest one-way

$80

Frontier

Thu 10/23

STL - ISP • 1 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 Islip!

Useful Info

Low season	January
High season	July
Cheapest flight	$80

Best time to beat the crowds with an average 12% drop in price.

Most popular time to fly with an average 7% increase in price.

Flight from St. Louis to Islip

How does KAYAK find such low prices on flights from Illinois to Islip?
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 Illinois to Islip.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Islip?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Illinois 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 Illinois to Islip?
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 Islip with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Islip?
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 Islip from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Riverhead

Amagansett

Everything you need to know for your flight to Islip

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Islip

Islip (ISP)

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

ISP

$80 Find Cheap Flights from Illinois to Islip

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

Cheap Flights from Illinois to Islip

Recent round-trip flight deals from Illinois to Islip

Recent one-way flight deals from Illinois to Islip

Recent last minute flight deals from Illinois to Islip

Everything you should know

Good to know

FAQs for booking flights from Illinois to Islip

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

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 Illinois to Islip.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Illinois 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 Illinois to Islip?

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 Islip with an airline and back to Illinois with another airline.

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

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 Islip from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Islip?

Everything you need to know for your flight to Islip

Information on the airport you'll fly into in Islip

Cabin class types available on flights to Illinois

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

Find direct flights for Islip

Flights to other popular destinations

Flights from domestic origins to Islip

Choose which airport to fly into in Islip

Find deals for your return flight