ISP

$97 Find Cheap Flights from Illinois to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Islip departing on 5/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Illinois to Islip

KAYAK's recommended round-trip deals from the most popular airlines that fly from Illinois to Islip.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
5:45 pm - 10:41 amSTL-ISP
15h 56m1 stop
Frontier Logo
6:48 pm - 12:06 amISP-STL
6h 18m1 stop
$200Frontier
Find Deal
Mon, May 12 - Sun, May 18
Frontier Logo
9:17 am - 7:34 pmORD-ISP
9h 17m1 stop
Frontier Logo
9:06 pm - 8:22 amISP-ORD
12h 16m1 stop
$208Frontier
Find Deal
Thu, May 22 - Sat, May 24
Frontier Logo
5:45 pm - 10:12 amSTL-ISP
15h 27m1 stop
Frontier Logo
6:48 pm - 12:06 amISP-STL
6h 18m1 stop
$208Frontier
Find Deal
Thu, May 15 - Mon, May 19
Frontier Logo
4:15 pm - 10:12 amORD-ISP
16h 57m1 stop
Frontier Logo
5:23 pm - 4:03 pmISP-ORD
23h 40m1 stop
$211Frontier
Find Deal
Sat, May 10 - Fri, May 16
Frontier Logo
9:19 am - 3:40 pmORD-ISP
29h 21m1 stop
Frontier Logo
8:26 pm - 12:06 amISP-ORD
28h 40m1 stop
$218Frontier
Find Deal
Sat, May 17 - Fri, Jun 6
Frontier Logo
5:55 pm - 7:51 amORD-ISP
12h 56m1 stop
Frontier Logo
8:26 pm - 12:06 amISP-ORD
28h 40m1 stop
$221Frontier
Find Deal
Thu, Jun 5 - Fri, Jun 6
Southwest Logo
5:05 pm - 12:05 amSTL-ISP
6h 00m1 stop
Southwest Logo
11:40 am - 8:10 pmISP-STL
9h 30m1 stop
$227Southwest
Find Deal
Thu, Jun 12 - Sat, Jun 14
Southwest Logo
3:35 pm - 12:05 amSTL-ISP
7h 30m2 stops
Southwest Logo
11:40 am - 8:10 pmISP-STL
9h 30m1 stop
$232Southwest
Find Deal
Thu, Jun 12 - Sat, Jun 14
Southwest Logo
3:35 pm - 12:05 amSTL-ISP
7h 30m2 stops
Southwest Logo
6:00 am - 1:25 pmISP-STL
8h 25m2 stops
$292Southwest
Find Deal
Thu, Jun 12 - Sat, Jun 14
 Logo
5:05 am - 6:25 pmORD-ISP
12h 20m1 stop
 Logo
11:02 am - 12:05 amISP-ORD
14h 03m1 stop
Sat, May 17 - Mon, May 19
Useful Info

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$97
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Chicago to Islip

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.

Everything you need to know for your flight to Islip

Information on the airport you'll fly into in Islip

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