$239+ Cheap flights from Milwaukee to Islip, NY (MKE - 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ISP
Sep 20 — Sep 271
Round-trip
1 adult, Economy
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Find cheap flights from Milwaukee to Islip with Cheapflights
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Milwaukee to Islip
Cheapest
Best
Last-minute
One-way
Cheapest flights from Milwaukee to IslipExplore the most affordable flight options available from Milwaukee to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
Explore the most affordable flight options available from Milwaukee to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:20 pm -
1 stop3h 40m
Mon 10/57:10 pm -
1 stop6h 25m
Deal found 8/20![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 8/17. 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 11/96:55 am -
1 stop9h 10m
Fri 11/1312:25 pm -
1 stop5h 50m
Deal found 8/17![Southwest logo]()
$337
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:55 am -
2 stops7h 35m
Wed 10/214:20 pm -
1 stop6h 55m
Deal found 8/18![Southwest logo]()
$343
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:55 am -
2 stops7h 35m
Tue 10/209:40 am -
2 stops8h 55m
Deal found 8/18![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 8/21. 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.
Sat 9/56:00 am -
1 stop6h 20m
Wed 9/96:05 am -
1 stop6h 55m
Deal found 8/21![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 8/17. 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 9/31:55 pm -
1 stop6h 40m
Mon 9/76:10 am -
1 stop6h 45m
Deal found 8/17![Southwest logo]()
$467
Best flights from Milwaukee to IslipDiscover carefully curated flight deals from Milwaukee to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
Discover carefully curated flight deals from Milwaukee to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:20 pm -
1 stop3h 40m
Mon 10/57:10 pm -
1 stop6h 25m
Deal found 8/20![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 8/17. 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 11/95:10 am -
2 stops9h 25m
Fri 11/135:40 pm -
1 stop6h 50m
Deal found 8/17![Southwest logo]()
$336
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:55 am -
2 stops7h 35m
Wed 10/214:20 pm -
1 stop6h 55m
Deal found 8/18![Southwest logo]()
$343
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:55 am -
2 stops7h 35m
Tue 10/206:05 am -
1 stop6h 50m
Deal found 8/18![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 8/21. 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.
Sat 9/56:00 am -
1 stop6h 20m
Wed 9/96:05 am -
1 stop6h 55m
Deal found 8/21![Southwest logo]()
$444
Last-minute flights from Milwaukee to IslipDiscover last-minute flight deals from Milwaukee to Islip. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Islip. Data last updated August 21, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 8/17. 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 9/31:55 pm -
1 stop6h 40m
Mon 9/76:10 am -
1 stop6h 45m
Deal found 8/17![Southwest logo]()
$467
This Southwest deal was found by Cheapflights users on 8/21. 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.
Sat 9/56:00 am -
1 stop6h 20m
Wed 9/96:05 am -
1 stop6h 55m
Deal found 8/21![Southwest logo]()
$444
One-way flights from Milwaukee to IslipSearch for one-way flight options from Milwaukee to Islip. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
Search for one-way flight options from Milwaukee to Islip. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:50 am -
1 stop9h 50m
Deal found 8/18![Southwest logo]()
$239
This Southwest deal was found by Cheapflights users on 8/17. 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.
Sat 8/296:00 am -
1 stop6h 20m
Deal found 8/17![Southwest logo]()
$345
This Frontier deal was found by Cheapflights users on 8/16. 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.
Wed 11/2511:38 am -
1 stop6h 28m
Deal found 8/16![Frontier logo]()
$399
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.
Sun 9/2010:10 am -
3 stops32h 49m
Deal found 8/18![Multiple Airlines logo]()
$493
Find flight deals from Milwaukee to Islip
Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $282 (Southwest) |
One-way from | $239 (Southwest) |
Popular in | November |
Cheapest in | January |
Average price | $368 |
Cheapflights Fare Finder
Customize your flight search to find flights from Milwaukee 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 August 21, 2026.
Use the filters below to find and compare flights from Milwaukee to Islip that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Fri 10/2
12:20 pm-5:00 pm
1 stop3h 40m
Islip Long Island
Mon 10/5
7:10 pm-12:35 am
1 stop6h 25m
$282
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Mon 11/9
5:10 am-3:35 pm
2 stops9h 25m
Islip Long Island
Fri 11/13
5:40 pm-11:30 pm
1 stop6h 50m
$336
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Thu 10/15
5:55 am-2:30 pm
2 stops7h 35m
Islip Long Island
Wed 10/21
4:20 pm-10:15 pm
1 stop6h 55m
$343
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Thu 10/15
5:55 am-2:30 pm
2 stops7h 35m
Islip Long Island
Tue 10/20
6:05 am-11:55 am
1 stop6h 50m
$343
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Sat 9/5
6:00 am-1:20 pm
1 stop6h 20m
Islip Long Island
Wed 9/9
6:05 am-12:00 pm
1 stop6h 55m
$444
Cheapest one-way
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Sun 9/20
11:50 am-10:40 pm
1 stop9h 50m
$239
Quickest one-way
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Sat 8/29
6:00 am-1:20 pm
1 stop6h 20m
$345
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Wed 11/25
11:38 am-7:06 pm
1 stop6h 28m
$399
MilwaukeeIslip
MKE Milwaukee-Mitchell - ISP Islip Long Island
MKEISP
Milwaukee-Mitchell
Sun 9/20
10:10 am-7:59 pm
3 stops32h 49m
$493
Sorted by cheapest first
Compare providers for flights from Milwaukee to Islip
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Milwaukee to Islip in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Milwaukee-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Milwaukee-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Milwaukee-Islip, New York flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Milwaukee-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Milwaukee-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Milwaukee to Islip
Have a flexible travel schedule? Discover the best time to fly to Islip from Milwaukee 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.
Reviews of airlines servicing Islip
Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated August 21, 2026.
Read through reviews of airlines operating flights from Milwaukee to Islip, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Milwaukee to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Book flights to Islip if you plan to visit one of these locationsRiverhead
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Other flights to Islip
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Top airline flying from Milwaukee to Islip
Discover the top airline that operate flights from Milwaukee 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 August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$274 | Average$379 | FlexibilityNo cancel fee | On-time63% |