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Islip

$86+ Cheap flights from Illinois to Islip (ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ISP
ago. 25 — sep. 11
lun. 8/25
lun. 9/1
1 adult, Economy
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Cheap flight deals from Illinois to Islip

Keep the following information in mind while searching for Illinois to Islip flight deals. Data was last updated agosto 20, 2025.

Round-trip from

$179
(Kiwi.com)

One-way from

$86
(Cheapflightsfares)

Popular in

December

Cheapest in

January

Average price

$218
From Illinois to Islip Long Island
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One-way flight from Illinois to Islip Long Island
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Highest demand for flights based on searches. 3% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Illinois to Islip

Cheapest flights from Illinois to Islip
Explore the most affordable flight options available from Illinois to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/268:49 pmORD - ISP
1 stop13h 06mFrontier
vie. 10/35:05 pmISP - ORD
1 stop23h 12mFrontier
Deal found 8/19$179
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/228:49 pmORD - ISP
1 stop12h 51mFrontier
jue. 9/2511:40 amISP - ORD
1 stop9h 04mFrontier
Deal found 8/20$188
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/55:17 pmORD - ISP
1 stop16h 38mMultiple Airlines
mar. 9/911:25 amISP - ORD
2 stops24h 27mMultiple Airlines
Deal found 8/19$194
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/58:49 pmORD - ISP
1 stop13h 06mMultiple Airlines
lun. 9/85:05 pmISP - ORD
2 stops18h 47mMultiple Airlines
Deal found 8/18$195
This Frontier deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/128:49 pmORD - ISP
1 stop13h 06mFrontier
dom. 9/149:49 amISP - ORD
2 stops14h 31mFrontier
Deal found 8/18$201
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/165:17 pmORD - ISP
1 stop16h 23mMultiple Airlines
mar. 9/2311:25 amISP - ORD
1 stop11h 33mMultiple Airlines
Deal found 8/19$203
This Frontier deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/48:49 pmORD - ISP
1 stop12h 51mFrontier
dom. 9/79:49 amISP - ORD
2 stops13h 56mFrontier
Deal found 8/18$204
This Frontier deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/118:05 amORD - ISP
1 stop7h 22mFrontier
dom. 9/1411:25 amISP - ORD
1 stop9h 19mFrontier
Deal found 8/18$209
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/48:49 pmORD - ISP
1 stop12h 51mFrontier
jue. 9/2511:40 amISP - ORD
1 stop9h 04mFrontier
Deal found 8/19$211
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/48:49 pmORD - ISP
1 stop12h 51mMultiple Airlines
lun. 9/85:05 pmISP - ORD
2 stops18h 47mMultiple Airlines
Deal found 8/19$212
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/48:49 pmORD - ISP
1 stop12h 51mMultiple Airlines
mar. 9/911:25 amISP - ORD
1 stop11h 33mMultiple Airlines
Deal found 8/19$213
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/59:45 amSTL - ISP
1 stop9h 29mFrontier
dom. 12/79:09 pmISP - STL
1 stop12h 36mFrontier
Deal found 8/19$238

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Islip 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, Cheapflights users made 2,558,603 searches. Data last updated agosto 20, 2025.
Use the filters below to find and compare flights from Illinois to Islip that are best for you.

Fly from

Illinois

Fly to

Islip

Route

Depart

Return

Price

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

vie. 9/26

8:49 pm-10:55 am

1 stop13h 06m

Islip Long Island

vie. 10/3

5:05 pm-3:17 pm

1 stop23h 12m

$179

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

lun. 9/22

8:49 pm-10:40 am

1 stop12h 51m

Islip Long Island

jue. 9/25

11:40 am-7:44 pm

1 stop9h 04m

$188

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

vie. 9/5

5:17 pm-10:55 am

1 stop16h 38m

Islip Long Island

lun. 9/8

5:05 pm-10:52 am

2 stops18h 47m

$194

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

vie. 9/5

5:17 pm-10:55 am

1 stop16h 38m

Islip Long Island

mar. 9/9

11:25 am-10:52 am

2 stops24h 27m

$194

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

vie. 9/26

8:49 pm-10:55 am

1 stop13h 06m

Islip Long Island

dom. 9/28

9:49 am-11:20 pm

2 stops14h 31m

$201

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

vie. 9/12

8:49 pm-10:55 am

1 stop13h 06m

Islip Long Island

dom. 9/14

9:49 am-11:20 pm

2 stops14h 31m

$201

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

mar. 9/16

5:17 pm-10:40 am

1 stop16h 23m

Islip Long Island

mar. 9/23

11:25 am-9:58 pm

1 stop11h 33m

$203

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

jue. 9/4

8:49 pm-10:40 am

1 stop12h 51m

Islip Long Island

dom. 9/7

9:49 am-10:45 pm

2 stops13h 56m

$204

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

jue. 9/11

8:05 am-4:27 pm

1 stop7h 22m

Islip Long Island

dom. 9/14

11:25 am-7:44 pm

1 stop9h 19m

$209

ChicagoIslip

ORD - ISP

ORDISP

Chicago O'Hare Intl

jue. 9/4

8:49 pm-10:40 am

1 stop12h 51m

Islip Long Island

jue. 9/25

11:40 am-7:44 pm

1 stop9h 04m

$211

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 30 results
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Best time to book a flight from Illinois to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Illinois to Islip?

Currently, January is the cheapest month in which you can book a flight from Illinois to Islip (average of $108). Flying from Illinois to Islip in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to ISP?

Find hourly flight availability from Illinois to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Islip as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Islip from Illinois?

    Most people fly into Islip Long Island (ISP) if they book a flight to Islip from Illinois. Long Island is conveniently located just 7.2 mi from Islip’s city center.

  • How long is the flight from Illinois to Islip?

    For as low as $256, Frontier can have you in Islip from Illinois in 7h 50m. There are 926 mi between Illinois and Islip. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Illinois to Islip?

    When deciding which route to take from Illinois to Islip consider Chicago O'Hare Intl - Islip Long Island, Lambert-St Louis - Islip Long Island or Decatur Arpt - Islip Long Island as they are the most popular.

  • Can I find deals for flights from Illinois to Islip that include hotel bookings?

    Yes. In addition to deals on Illinois to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Islip.

  • Can I find deals for business class flights from Illinois to Islip?

    Yes. Cheapflights offers flight deals from Illinois to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Islip?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Islip (average of $108). Flying from Illinois to Islip in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

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Alternative routes for Illinois to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Illinois to Islip

Discover the top airline that operate flights from Illinois to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$254Average$397FlexibilityNo cancel feeOn-time63%

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