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Not ready to book? to track prices.Find the cheapest flights from Islip, New York to Illinois
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Southwest flights from Islip, New York to Illinois
Our best Southwest deals on Islip, New York to Illinois flight tickets
Frontier flights from Islip, New York to Illinois
Our best Frontier deals on Islip, New York to Illinois flight tickets
See travel insights to Illinois from
How to get the cheapest flight ticket from Islip, New York to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Islip, New York to Illinois is on a Friday when prices can be found for as low as $197. Flights from Islip, New York to Illinois on a Friday will generally be more expensive and average around $197. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Islip, New York to Illinois during this time can be as low as $259. Flights in the afternoon are often more expensive with an average ticket price of $305.
What is the cheapest airline that flies from Islip Long Island to Illinois?
Frontier and Southwest are the most popular carriers operating from Islip Long Island to Illinois
What airlines fly to Illinois?
American Airlines, United Airlines and Spirit Airlines are the top three most popular airlines that fly to Illinois from Islip, New York according to our data. American Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 7 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
Cheap Islip, New York to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Illinois
When did momondo last update prices for flights from Islip Long Island Airport to Illinois?
Prices for flights from Islip Long Island Airport to Illinois were last updated today.
How many operators does momondo search for flights from Islip Long Island Airport to Illinois?
As of April 2025, there is 1 operator available to choose from for flights from Islip Long Island Airport to Illinois.
How old do you have to be to fly from Islip Long Island Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Why use momondo?
Why should I use momondo to find a flight deal from Islip to Illinois?
It is quick and easy to find Islip to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.
Can I find flights from Islip to Illinois with flexible booking policies on momondo?
momondo does allow users to show only those flights to Illinois from Islip which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Islip to Illinois?
Once all potential Islip to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Islip to Illinois right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Islip and alert you when they change.