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Cheap flights from Illinois to New York from $103

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 4/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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
6:00 am - 9:28 am
ORD
-
ISP
26h 28m
1 stop
Frontier Logo
8:31 pm - 11:58 pm
ISP
-
ORD
28h 27m
1 stop
$162Frontier
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
5:50 am - 9:13 am
ORD
-
ISP
26h 23m
2 stops
Multiple Airlines Logo
6:43 pm - 9:27 am
ISP
-
ORD
15h 44m
1 stop
$185Multiple Airlines
Thu, Apr 30 - Sat, May 9
Frontier Logo
2:05 pm - 9:13 am
ORD
-
ISP
18h 08m
1 stop
Frontier Logo
6:43 pm - 9:27 am
ISP
-
ORD
15h 44m
1 stop
$201Frontier
Thu, Apr 30 - Sat, May 9
Frontier Logo
2:05 pm - 9:13 am
ORD
-
ISP
18h 08m
1 stop
Frontier Logo
11:00 am - 11:13 pm
ISP
-
ORD
13h 13m
1 stop
$246Frontier
Thu, Apr 30 - Sun, May 17
Southwest Logo
5:00 am - 12:05 pm
STL
-
ISP
6h 05m
1 stop
Southwest Logo
4:10 pm - 9:05 pm
ISP
-
STL
5h 55m
1 stop
$248Southwest
Mon, Apr 20 - Wed, Apr 22
Frontier Logo
9:30 am - 10:05 am
ORD
-
ISP
23h 35m
2 stops
Frontier Logo
5:38 pm - 11:13 pm
ISP
-
ORD
30h 35m
1 stop
$249Frontier
Fri, May 8 - Tue, May 12
Southwest Logo
5:00 am - 12:05 pm
STL
-
ISP
6h 05m
1 stop
Southwest Logo
12:30 pm - 8:00 pm
ISP
-
STL
8h 30m
2 stops
$253Southwest
Mon, Apr 20 - Wed, Apr 22
Frontier Logo
5:25 am - 1:26 am
ORD
-
ISP
19h 01m
1 stop
Frontier Logo
4:01 pm - 11:36 pm
ISP
-
ORD
8h 35m
1 stop
$256Frontier
Thu, Apr 9 - Mon, Apr 13
Southwest Logo
2:10 pm - 11:30 pm
STL
-
ISP
8h 20m
2 stops
Southwest Logo
12:30 pm - 8:00 pm
ISP
-
STL
8h 30m
2 stops
$259Southwest
Mon, Apr 20 - Wed, Apr 22
Multiple Airlines Logo
11:25 am - 8:52 pm
ORD
-
ISP
8h 27m
1 stop
Multiple Airlines Logo
7:59 pm - 11:36 pm
ISP
-
ORD
28h 37m
1 stop
$292Multiple Airlines
Wed, Apr 8 - Sun, Apr 12

Frontier flights from Illinois to Islip, New York

Our best Frontier deals on Illinois to Islip, New York flight tickets
Frontier
Apr 26
ORD6:00 amChicago O'Hare Intl
26h 28m
1 stop
ISP9:28 amIslip Long Island
May 3
ISP8:31 pmIslip Long Island
28h 27m
1 stop
ORD11:58 pmChicago O'Hare Intl
$162
Frontier
Apr 30
ORD2:05 pmChicago O'Hare Intl
18h 08m
1 stop
ISP9:13 amIslip Long Island
May 9
ISP6:43 pmIslip Long Island
15h 44m
1 stop
ORD9:27 amChicago O'Hare Intl
$201
Frontier
Apr 30
ORD2:05 pmChicago O'Hare Intl
18h 08m
1 stop
ISP9:13 amIslip Long Island
May 17
ISP11:00 amIslip Long Island
13h 13m
1 stop
ORD11:13 pmChicago O'Hare Intl
$246

Southwest flights from Illinois to Islip, New York

Our best Southwest deals on Illinois to Islip, New York flight tickets
Southwest
Apr 20
STL5:00 amLambert-St Louis
6h 05m
1 stop
ISP12:05 pmIslip Long Island
Apr 22
ISP4:10 pmIslip Long Island
5h 55m
1 stop
STL9:05 pmLambert-St Louis
$248
Southwest
Apr 20
STL5:00 amLambert-St Louis
6h 05m
1 stop
ISP12:05 pmIslip Long Island
Apr 22
ISP12:30 pmIslip Long Island
8h 30m
2 stops
STL8:00 pmLambert-St Louis
$253
Southwest
Apr 20
STL2:10 pmLambert-St Louis
8h 20m
2 stops
ISP11:30 pmIslip Long Island
Apr 22
ISP12:30 pmIslip Long Island
8h 30m
2 stops
STL8:00 pmLambert-St Louis
$259

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 March 28, 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

Sun 4/26

6:00 am-9:28 am

1 stop26h 28m

Islip Long Island

Sun 5/3

8:31 pm-11:58 pm

1 stop28h 27m

$162

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Thu 4/30

5:50 am-9:13 am

2 stops26h 23m

Islip Long Island

Sat 5/9

6:43 pm-9:27 am

1 stop15h 44m

$185

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Thu 4/30

2:05 pm-9:13 am

1 stop18h 08m

Islip Long Island

Sat 5/9

6:43 pm-9:27 am

1 stop15h 44m

$201

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Thu 4/30

2:05 pm-9:13 am

1 stop18h 08m

Islip Long Island

Sun 5/17

11:00 am-11:13 pm

1 stop13h 13m

$246
Quickest round-trip

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Mon 4/20

5:00 am-12:05 pm

1 stop6h 05m

Islip Long Island

Wed 4/22

4:10 pm-9:05 pm

1 stop5h 55m

$248

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Fri 5/8

9:30 am-10:05 am

2 stops23h 35m

Islip Long Island

Tue 5/12

5:38 pm-11:13 pm

1 stop30h 35m

$249

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Mon 4/20

5:00 am-12:05 pm

1 stop6h 05m

Islip Long Island

Wed 4/22

12:30 pm-8:00 pm

2 stops8h 30m

$253

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Thu 4/9

5:25 am-1:26 am

1 stop19h 01m

Islip Long Island

Mon 4/13

4:01 pm-11:36 pm

1 stop8h 35m

$256

St. LouisIslip

STL - ISP

STLISP

Lambert-St Louis

Mon 4/20

2:10 pm-11:30 pm

2 stops8h 20m

Islip Long Island

Wed 4/22

12:30 pm-8:00 pm

2 stops8h 30m

$259

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

Wed 4/8

11:25 am-8:52 pm

1 stop8h 27m

Islip Long Island

Sun 4/12

7:59 pm-11:36 pm

1 stop28h 37m

$292

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 44% 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 45m

Direct flights

None
The fastest flight from Illinois to Islip, New York takes 5h 45m
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

  • 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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