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Cheap flights from Illinois to New York from $93

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to New York departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:30 pm - 10:03 am
ORD
-
ISP
15h 33m
1 stop
Frontier Logo
10:48 am - 11:14 pm
ISP
-
ORD
13h 26m
1 stop
$261Frontier
Fri, Aug 28 - Mon, Aug 31
Frontier Logo
4:09 pm - 9:58 am
STL
-
ISP
16h 49m
1 stop
Frontier Logo
10:48 am - 11:59 pm
ISP
-
STL
14h 11m
1 stop
$262Frontier
Thu, Jul 30 - Sun, Aug 2
Frontier Logo
5:13 pm - 9:58 am
ORD
-
ISP
15h 45m
1 stop
Frontier Logo
10:48 am - 11:05 pm
ISP
-
ORD
13h 17m
1 stop
$270Frontier
Tue, Jul 7 - Thu, Jul 9
Southwest Logo
3:30 pm - 10:35 pm
STL
-
ISP
6h 05m
1 stop
Southwest Logo
10:55 am - 2:50 pm
ISP
-
STL
4h 55m
1 stop
$279Southwest
Wed, Jul 29 - Tue, Aug 4
Frontier Logo
5:11 pm - 10:05 am
ORD
-
ISP
15h 54m
1 stop
Frontier Logo
11:00 am - 11:13 pm
ISP
-
ORD
13h 13m
1 stop
$282Frontier
Tue, May 26 - Fri, May 29
Southwest Logo
3:30 pm - 10:35 pm
STL
-
ISP
6h 05m
1 stop
Southwest Logo
12:55 pm - 5:55 pm
ISP
-
STL
6h 00m
2 stops
$284Southwest
Wed, Jul 29 - Tue, Aug 4
Frontier Logo
4:09 pm - 10:03 am
STL
-
ISP
16h 54m
1 stop
Frontier Logo
10:48 am - 11:59 pm
ISP
-
STL
14h 11m
1 stop
$326Frontier
Wed, Jul 29 - Sun, Aug 2
Frontier Logo
5:13 pm - 9:58 am
ORD
-
ISP
15h 45m
1 stop
Frontier Logo
10:48 am - 9:11 am
ISP
-
ORD
23h 23m
1 stop
$328Frontier
Thu, Jul 23 - Sun, Jul 26
Southwest Logo
5:40 am - 1:45 pm
STL
-
ISP
7h 05m
2 stops
Southwest Logo
12:55 pm - 5:55 pm
ISP
-
STL
6h 00m
2 stops
$338Southwest
Wed, Jul 29 - Tue, Aug 4
Multiple Airlines Logo
5:13 pm - 9:58 am
ORD
-
ISP
15h 45m
1 stop
Multiple Airlines Logo
5:00 pm - 11:44 pm
ISP
-
ORD
7h 44m
1 stop
$357Multiple Airlines
Thu, Jul 30 - Tue, Aug 4

Frontier flights from Illinois to Islip, New York

Our best Frontier deals on Illinois to Islip, New York flight tickets
Frontier
Aug 28
ORD5:30 pmChicago O'Hare Intl
15h 33m
1 stop
ISP10:03 amIslip Long Island
Aug 31
ISP10:48 amIslip Long Island
13h 26m
1 stop
ORD11:14 pmChicago O'Hare Intl
$261
Frontier
Jul 30
STL4:09 pmLambert-St Louis
16h 49m
1 stop
ISP9:58 amIslip Long Island
Aug 2
ISP10:48 amIslip Long Island
14h 11m
1 stop
STL11:59 pmLambert-St Louis
$262
Frontier
Jul 7
ORD5:13 pmChicago O'Hare Intl
15h 45m
1 stop
ISP9:58 amIslip Long Island
Jul 9
ISP10:48 amIslip Long Island
13h 17m
1 stop
ORD11:05 pmChicago O'Hare Intl
$270

Southwest flights from Illinois to Islip, New York

Our best Southwest deals on Illinois to Islip, New York flight tickets
Southwest
Jul 29
STL3:30 pmLambert-St Louis
6h 05m
1 stop
ISP10:35 pmIslip Long Island
Aug 4
ISP10:55 amIslip Long Island
4h 55m
1 stop
STL2:50 pmLambert-St Louis
$279
Southwest
Jul 29
STL3:30 pmLambert-St Louis
6h 05m
1 stop
ISP10:35 pmIslip Long Island
Aug 4
ISP12:55 pmIslip Long Island
6h 00m
2 stops
STL5:55 pmLambert-St Louis
$284
Southwest
Jul 29
STL5:40 amLambert-St Louis
7h 05m
2 stops
ISP1:45 pmIslip Long Island
Aug 4
ISP12:55 pmIslip Long Island
6h 00m
2 stops
STL5:55 pmLambert-St Louis
$338

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Islip, New York that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 14, 2026.
Use the filters below to find and compare flights from Illinois to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Fri 8/28

5:30 pm-10:03 am

1 stop15h 33m

Islip Long Island

Mon 8/31

10:48 am-11:14 pm

1 stop13h 26m

$261

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Thu 7/30

4:09 pm-9:58 am

1 stop16h 49m

Islip Long Island

Sun 8/2

10:48 am-11:59 pm

1 stop14h 11m

$262

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Tue 7/7

5:13 pm-9:58 am

1 stop15h 45m

Islip Long Island

Thu 7/9

10:48 am-11:05 pm

1 stop13h 17m

$270
Quickest round-trip

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Wed 7/29

3:30 pm-10:35 pm

1 stop6h 05m

Islip Long Island

Tue 8/4

10:55 am-2:50 pm

1 stop4h 55m

$279

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Tue 5/26

5:11 pm-10:05 am

1 stop15h 54m

Islip Long Island

Fri 5/29

11:00 am-11:13 pm

1 stop13h 13m

$282

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Wed 7/29

3:30 pm-10:35 pm

1 stop6h 05m

Islip Long Island

Tue 8/4

12:55 pm-5:55 pm

2 stops6h 00m

$284

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Wed 7/29

4:09 pm-10:03 am

1 stop16h 54m

Islip Long Island

Sun 8/2

10:48 am-11:59 pm

1 stop14h 11m

$326

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Thu 7/23

5:13 pm-9:58 am

1 stop15h 45m

Islip Long Island

Sun 7/26

10:48 am-9:11 am

1 stop23h 23m

$328

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Wed 7/29

5:40 am-1:45 pm

2 stops7h 05m

Islip Long Island

Tue 8/4

12:55 pm-5:55 pm

2 stops6h 00m

$338

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Thu 7/30

5:13 pm-9:58 am

1 stop15h 45m

Islip Long Island

Tue 8/4

5:00 pm-11:44 pm

1 stop7h 44m

$357

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to New York from

How to get the cheapest flight ticket from Illinois to Islip, New York

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 airline that flies from Illinois to Islip Long Island?

Frontier and Southwest are the most popular carriers operating from Illinois to Islip Long Island

What airlines fly to Islip, New York?

United Airlines, American Airlines and Spirit Airlines are the top three most popular airlines that fly to Islip, New York from Illinois according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 7 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

Cheap Illinois to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Islip, New York

Fastest flight time

5h 25m

Direct flights

None
The fastest flight from Illinois to Islip, New York takes 5h 25m
There are no direct flights from Illinois to Islip, New York. There are no popular flight routes from Illinois to Islip, New York.
Search flight deals

Frequently asked questions about flying from Illinois to Islip, New York

  • When did momondo last update prices for flights from Illinois to Islip Long Island Airport?

    Prices for flights from Illinois to Islip Long Island Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Islip Long Island Airport?

  • How old do you have to be to fly from Illinois to Islip Long Island Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Islip Long Island Airport.

  • What documentation or ID do you need to fly to Islip Long Island Airport?

    The travel and health documents required for your trip to Islip Long Island Airport 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 Islip Long Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
Montauk
Riverhead
Sag Harbor
Southampton
Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Islip?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Islip for you.

Can I find flights from Illinois to Islip with flexible booking policies on momondo?

Yes. All flights to Islip from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Islip?

momondo helps you find the best flight between Illinois and Islip by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Illinois to Islip right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Illinois to Islip flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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