$94 Find Cheap Flights from Islip to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Illinois departing on 3/4. 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.
1 adult
1 adult, Economy, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Illinois, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Book Cheap Islip to Illinois Plane Tickets

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

Recent round-trip flight deals from Islip to Illinois

Tue, Jan 27 - Sat, Jan 31
Multiple Airlines Logo
12:45 pm - 10:04 pm
ISP
-
ORD
10h 19m1 stop
Multiple Airlines Logo
10:48 am - 8:40 am
ORD
-
ISP
20h 52m1 stop
$165Multiple Airlines
Tue, Jan 27 - Sat, Jan 31
Multiple Airlines Logo
12:45 pm - 9:43 am
ISP
-
ORD
21h 58m1 stop
Multiple Airlines Logo
9:15 am - 11:15 am
ORD
-
ISP
25h 00m2 stops
$179Multiple Airlines
Sat, Jan 17 - Sun, Jan 25
Multiple Airlines Logo
11:50 am - 1:13 pm
ISP
-
ORD
26h 23m1 stop
Multiple Airlines Logo
12:44 pm - 6:48 pm
ORD
-
ISP
29h 04m1 stop
$186Multiple Airlines
Sat, Jan 17 - Sun, Jan 25
Multiple Airlines Logo
6:47 pm - 6:58 pm
ISP
-
ORD
25h 11m1 stop
Multiple Airlines Logo
8:43 pm - 6:48 pm
ORD
-
ISP
21h 05m2 stops
$192Multiple Airlines
Thu, Jan 22 - Sun, Jan 25
Frontier Logo
7:43 pm - 10:35 am
ISP
-
ORD
15h 52m1 stop
Frontier Logo
12:21 pm - 6:48 pm
ORD
-
ISP
29h 27m1 stop
$201Frontier
Tue, Jan 13 - Thu, Jan 15
Multiple Airlines Logo
8:00 am - 5:52 pm
ISP
-
ORD
10h 52m1 stop
Multiple Airlines Logo
8:08 pm - 7:50 pm
ORD
-
ISP
22h 42m1 stop
$209Multiple Airlines
Tue, Jan 13 - Sat, Jan 17
Frontier Logo
8:00 am - 10:34 pm
ISP
-
STL
15h 34m1 stop
Frontier Logo
5:11 pm - 8:55 am
STL
-
ISP
14h 44m1 stop
$217Frontier
Sun, Jan 25 - Sun, Feb 1
Frontier Logo
9:25 am - 10:41 am
ISP
-
ORD
26h 16m1 stop
Frontier Logo
12:21 pm - 6:48 pm
ORD
-
ISP
29h 27m1 stop
$241Frontier
Wed, Mar 4 - Sun, Mar 8
Frontier Logo
9:33 am - 3:52 pm
ISP
-
ORD
7h 19m1 stop
Frontier Logo
8:05 am - 4:23 pm
ORD
-
ISP
7h 18m1 stop
$244Frontier
Tue, Jan 13 - Thu, Jan 15
Multiple Airlines Logo
8:00 am - 5:52 pm
ISP
-
ORD
10h 52m1 stop
Multiple Airlines Logo
8:43 pm - 8:09 pm
ORD
-
ISP
22h 26m2 stops
$253Multiple Airlines
Booking Insights

KAYAK's insights & trends for Islip to Illinois flights

Get data-powered insights and trends into flights from Islip to Illinois to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Islip and Illinois?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Islip to Illinois.

There is just one airline that flies from Islip to Illinois direct and that is Southwest. The best round-trip deal found from Southwest for the route is to Chicago O'Hare Intl Airport (ORD) and costs $336.

Find deals

Good to know

Low seasonApril
Cheapest flight$94
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Islip to Chicago

FAQs - booking Illinois flights

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

    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 Illinois.

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

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

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

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

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

Reviews of the top airline flying from Islip to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Islip to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4251 reviews
8.0Comfort
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
Airline reviews

Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.

8.0 ExcellentMaggie, Dec 2025
BWI - LAS
Read more Southwest reviews

Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

Flight was on time. Wi-fi was a little spotty/slow. Boarding and exit were efficient.

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

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

Information on your arrival and departure airports

Islip (ISP)