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$49 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 11/20. 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
0 bags

Search 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
In the last 7 days travelers have searched 44,181,550 times on KAYAK, and here is why:

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

St. Louis
St. Louis1 stop$112

Good to know

Cheapest flight

$49
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 to Illinois 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 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 to Illinois 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 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 to Illinois from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Morning departure is around 33% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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.
6.1
FrontierOverall score based on 3576 reviews
4.9Food
4.7Entertainment
6.4Boarding
6.9Crew
5.7Comfort
Airline reviews

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

6.0 GoodAnonymous, Oct 2024SFO - SNA
Read more Frontier reviews

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

There was no easy way to check in. I don't want to install an app to checkin. I will use alaska from now on because they have a web check in method that is easy.

The crew was ghetto lol I felt like I was on an inner city field trip

Horrible! The short distance flight ended up taking 5 hrs! There was a 3 hr delay for the flight to take off and there was a 70 min wait on the tarmac for some bogus reason that the pilot said the gate he was supposed to board was taken up. After a 30 min wait he said the plane that was supposed to push out of the gate called a medical emergency and 40 min later he ended up boarding another gate. For the initial 3 hr delay there was no information/alert about the gate or delay in the app or the boards up until the boarding time and even beyond! Had to walk all the way to the end of the terminal to find the frontier staff to ask what was going on. Avoid this airline at all costs! If you have carryon bags or checked bags , their prices come equivalent to the prices of more reliable airlines. They are the worst in timeliness at 60% (reported as delayed) this year (check the data) by a high margin even compared to the second worst airline. If you are ok with having a miserable flight experience with the odds close to flip of a coin, feel free to try them. If you value your time , money and flying experience, stay away.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

Delayed for two hours due to trivial issues. No reimbursment. Also on arrival further delay due to terminal malfunction.

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

I went to the Frontier counter in San Jose at 1030am or so on Sunday 10/13/24 to see if I could get an earlier flight to San Diego in lieu of my reserved 630pm flight. One thing led to another, and I was able to obtain an open seat for about $ 56. on the earlier flight. Fine. Then the agent asked if I "was checking a bag". Not knowing that carry-ons cost extra per Frontier policy, I thought that she meant a regular checked bag. Therefore, I said no. Once I got to the gate, the same gate agent who sold me a ticket told me that I had to pay $99 for a carry-on, and that all bags were extra on Frontier. Having never flown on Frontier, I was not aware of this. Part of the issue was that she was not a native English speaker, so there was a miscommunication as to what "bag" meant. I would have preferred for her to have clearly let me know at the front counter that any bag including a carry-on cost $99. It would have had the same outcome, as I had to take my carry-on. But it got hectic at the last minute at the gate itself. The baggage policy should have mentioned "including carry-ons" when we first spoke.

Book cheap flights from Islip to Illinois

Recent round-trip flight deals

 
These are the cheapest round-trip flights from Islip to Illinois found on KAYAK in the last 72 hours.
11/16Sat
1 stopFrontier
12h 56mISP-ORD
11/20Wed
1 stopFrontier
10h 33mORD-ISP
$100
12/9Mon
1 stopFrontier
11h 41mISP-STL
12/16Mon
1 stopFrontier
24h 10mSTL-ISP
$112
12/8Sun
1 stopFrontier
14h 42mISP-ORD
12/12Thu
1 stopFrontier
24h 57mORD-ISP
$123
11/26Tue
1 stopFrontier
8h 42mISP-ORD
11/27Wed
1 stopFrontier
9h 19mORD-ISP
$124
11/17Sun
1 stopFrontier
7h 25mISP-ORD
11/20Wed
1 stopFrontier
10h 33mORD-ISP
$134
12/17Tue
1 stopFrontier
13h 03mISP-STL
12/20Fri
1 stopFrontier
9h 51mSTL-ISP
$138
1/23Thu
3 stops
25h 53mISP-ORD
1/25Sat
1 stop
12h 10mORD-ISP
$291
12/4Wed
1 stopSouthwest
8h 35mISP-ORD
12/9Mon
1 stopSouthwest
3h 55mORD-ISP
$366
12/4Wed
2 stopsSouthwest
9h 35mISP-ORD
12/9Mon
1 stopSouthwest
3h 55mORD-ISP
$371
12/4Wed
2 stopsSouthwest
7h 35mISP-ORD
12/9Mon
2 stopsSouthwest
13h 45mORD-ISP
$386

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Islip to Illinois found on KAYAK in the last 72 hours.
11/20Wed
1 stopFrontier
7h 20mISP-ORD
$49
12/21Sat
1 stopFrontier
8h 49mISP-ORD
$50
11/20Wed
1 stopFrontier
7h 20mISP-ORD
$51
1/24Fri
1 stopFrontier
9h 13mISP-ORD
$64
11/18Mon
1 stopFrontier
6h 55mISP-STL
$73
11/21Thu
1 stopFrontier
23h 26mISP-ORD
$76
11/21Thu
3 stops
20h 23mISP-ORD
$165
12/21Sat
1 stopSouthwest
11h 50mISP-STL
$189
12/21Sat
2 stopsSouthwest
9h 20mISP-STL
$198
11/27Wed
1 stopSouthwest
7h 45mISP-ORD
$203

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Last minute flights from Islip to Illinois

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Islip to Illinois that are departing in the next 10 days.
11/3Sun
multi-stopFrontier
7h 30mISP-ORD
11/4Mon
multi-stopFrontier
7h 19mORD-ISP
$432
11/3Sun
multi-stopFrontier
7h 30mISP-ORD
11/4Mon
multi-stopFrontier
7h 19mORD-ISP
$471
11/6Wed
multi-stopFrontier
7h 20mISP-ORD
11/13Wed
multi-stopFrontier
10h 33mORD-ISP
$489
11/3Sun
multi-stopFrontier
7h 30mISP-ORD
11/4Mon
multi-stopFrontier
7h 19mORD-ISP
$501
11/3Sun
multi-stop
7h 30mISP-ORD
11/10Sun
multi-stop
13h 39mORD-ISP
$533
11/3Sun
multi-stopFrontier
7h 30mISP-ORD
11/6Wed
multi-stopFrontier
10h 33mORD-ISP
$713
11/6Wed
multi-stopSouthwest
5h 15mISP-STL
11/13Wed
multi-stopSouthwest
8h 35mSTL-ISP
$746
11/6Wed
multi-stopSouthwest
9h 15mISP-STL
11/13Wed
multi-stopSouthwest
8h 50mSTL-ISP
$751
11/3Sun
multi-stopSouthwest
11h 15mISP-ORD
11/10Sun
multi-stopSouthwest
4h 50mORD-ISP
$751
11/6Wed
multi-stopSouthwest
9h 15mISP-STL
11/13Wed
multi-stopSouthwest
7h 25mSTL-ISP
$756

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

Information on your arrival and departure airports