$140+ Cheap flights from Wisconsin to Islip, NY (ISP)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ISP
Nov 14 — Nov 211
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Wisconsin to Islip
Cheapest
Best
Last-minute
One-way
Cheapest flights from Wisconsin to IslipExplore the most affordable flight options available from Wisconsin to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 15, 2026.
Explore the most affordable flight options available from Wisconsin to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 15, 2026.
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:10 am -
2 stops9h 25m
Mon 11/234:45 pm -
1 stop8h 05m
Deal found 10/14![Southwest logo]()
$432
This Southwest deal was found by Cheapflights users on 10/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:50 pm -
1 stop3h 50m
Fri 10/307:10 pm -
1 stop6h 30m
Deal found 10/11![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:50 pm -
1 stop3h 50m
Mon 11/25:40 pm -
1 stop6h 50m
Deal found 10/14![Southwest logo]()
$461
Best flights from Wisconsin to IslipDiscover carefully curated flight deals from Wisconsin to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 15, 2026.
Discover carefully curated flight deals from Wisconsin to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 15, 2026.
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/55:00 am -
1 stop6h 00m
Sun 2/75:35 am -
1 stop4h 40m
Deal found 10/14![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 10/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:50 pm -
1 stop3h 50m
Fri 10/307:10 pm -
1 stop6h 30m
Deal found 10/11![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:50 pm -
1 stop3h 50m
Mon 11/25:40 pm -
1 stop6h 50m
Deal found 10/14![Southwest logo]()
$461
Last-minute flights from Wisconsin to IslipDiscover last-minute flight deals from Wisconsin to Islip. Data last updated October 15, 2026 and is based on user searches.
Discover last-minute flight deals from Wisconsin to Islip. Data last updated October 15, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:50 pm -
1 stop3h 50m
Fri 10/307:10 pm -
1 stop6h 30m
Deal found 10/11![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:50 pm -
1 stop3h 50m
Mon 11/25:40 pm -
1 stop6h 50m
Deal found 10/14![Southwest logo]()
$461
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:10 am -
2 stops9h 25m
Mon 11/234:45 pm -
1 stop8h 05m
Deal found 10/14![Southwest logo]()
$432
One-way flights from Wisconsin to IslipSearch for one-way flight options from Wisconsin to Islip. Find affordable one-way fares based on user searches. Data last updated October 15, 2026.
Search for one-way flight options from Wisconsin to Islip. Find affordable one-way fares based on user searches. Data last updated October 15, 2026.
This Southwest deal was found by Cheapflights users on 10/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/218:15 pm -
1 stop11h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Southwest logo]()
$140
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/15:00 am -
1 stop6h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Southwest logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 10/11. 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.
Mon 12/215:33 pm -
3 stops48h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Multiple Airlines logo]()
$897
Find flight deals from Wisconsin to Islip
Keep the following information in mind while searching for Wisconsin to Islip flight deals. Data was last updated October 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $293 (Southwest) |
One-way from | $140 (Southwest) |
Popular in | July |
Cheapest in | January |
Average price | $378 |
Cheapflights Fare Finder
Customize your flight search to find flights from Wisconsin 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 7,457,451 searches. Data last updated October 15, 2026.
Use the filters below to find and compare flights from Wisconsin to Islip that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Mon 12/21
8:15 pm-8:45 am
1 stop11h 30m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$140
Quickest round-trip
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Mon 3/1
5:00 am-12:00 pm
1 stop6h 00m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$224
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Fri 2/5
5:00 am-12:00 pm
1 stop6h 00m
Islip Long Island
Sun 2/7
5:35 am-9:15 am
1 stop4h 40m
$293
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Mon 10/26
6:50 pm-11:40 pm
1 stop3h 50m
Islip Long Island
Fri 10/30
7:10 pm-12:40 am
1 stop6h 30m
$441
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Thu 10/29
6:50 pm-11:40 pm
1 stop3h 50m
Islip Long Island
Mon 11/2
5:40 pm-11:30 pm
1 stop6h 50m
$461
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Mon 12/21
5:33 pm-7:09 pm
3 stops48h 36m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$897
Sorted by cheapest first
Best time to book a flight from Wisconsin to Islip
Have a flexible travel schedule? Discover the best time to fly to Islip from Wisconsin with our price prediction graph.
MKE-ISP
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 Wisconsin to Islip
USWI-ISP
MKE-ISP
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Wisconsin to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Islip?
Book flights to Islip if you plan to visit one of these locationsRiverhead
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Other flights to Islip
Explore flights to Islip departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 15, 2026.
Wisconsin and Islip flights
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Top airline flying from Wisconsin to Islip
Discover the top airline that operate flights from Wisconsin 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 7,457,451 searches. Data last updated October 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$274 | Average$379 | FlexibilityNo cancel fee | On-time63% |