$148+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ISP
Aug 3 — Aug 101
Round-trip
1 adult, Economy
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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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Best
Last-minute
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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 July 4, 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 July 4, 2026.
This Southwest deal was found by Cheapflights users on 7/3. 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 8/106:25 am
MKE
- ISP
1 stop5h 10m
Southwest
Fri 8/144:05 pm
ISP
- MKE
1 stop5h 35m
Southwest
Deal found 7/3![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 7/3. 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 8/26:50 am
MKE
- ISP
1 stop3h 55m
Southwest
Thu 8/612:35 pm
ISP
- MKE
2 stops8h 40m
Southwest
Deal found 7/3![Southwest logo]()
$311
This Southwest deal was found by Cheapflights users on 6/29. 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 7/248:15 pm
MKE
- ISP
1 stop12h 30m
Southwest
Tue 7/284:40 pm
ISP
- MKE
1 stop6h 45m
Southwest
Deal found 6/29![Southwest logo]()
$348
This Southwest deal was found by Cheapflights users on 7/1. 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 8/15:40 pm
MKE
- ISP
1 stop4h 35m
Southwest
Sun 8/96:20 am
ISP
- MKE
1 stop6h 50m
Southwest
Deal found 7/1![Southwest logo]()
$378
This Southwest deal was found by Cheapflights users on 6/29. 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 7/238:15 pm
MKE
- ISP
1 stop13h 15m
Southwest
Tue 7/286:00 am
ISP
- MKE
1 stop6h 50m
Southwest
Deal found 6/29![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 6/29. 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 8/145:00 pm
MKE
- ISP
1 stop4h 05m
Southwest
Sun 8/166:20 am
ISP
- MKE
2 stops8h 15m
Southwest
Deal found 6/29![Southwest logo]()
$416
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 July 4, 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 July 4, 2026.
This Southwest deal was found by Cheapflights users on 7/3. 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 8/106:25 am
MKE
- ISP
1 stop5h 10m
Southwest
Fri 8/144:05 pm
ISP
- MKE
1 stop5h 35m
Southwest
Deal found 7/3![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 6/29. 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 7/248:15 pm
MKE
- ISP
1 stop12h 30m
Southwest
Tue 7/284:40 pm
ISP
- MKE
1 stop6h 45m
Southwest
Deal found 6/29![Southwest logo]()
$348
This Southwest deal was found by Cheapflights users on 7/1. 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 8/15:40 pm
MKE
- ISP
1 stop4h 35m
Southwest
Sun 8/96:20 am
ISP
- MKE
1 stop6h 50m
Southwest
Deal found 7/1![Southwest logo]()
$378
This Southwest deal was found by Cheapflights users on 6/29. 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 7/238:15 pm
MKE
- ISP
1 stop13h 15m
Southwest
Tue 7/286:00 am
ISP
- MKE
1 stop6h 50m
Southwest
Deal found 6/29![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 6/29. 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 8/1411:45 am
MKE
- ISP
2 stops9h 20m
Southwest
Sun 8/166:20 am
ISP
- MKE
2 stops8h 15m
Southwest
Deal found 6/29![Southwest logo]()
$421
This Southwest deal was found by Cheapflights users on 7/3. 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.
Wed 7/226:45 am
MKE
- ISP
1 stop4h 05m
Southwest
Tue 7/286:00 am
ISP
- MKE
1 stop6h 50m
Southwest
Deal found 7/3![Southwest logo]()
$450
Last-minute flights from Milwaukee to IslipDiscover last-minute flight deals from Milwaukee to Islip. Data last updated July 4, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Islip. Data last updated July 4, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/29. 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 7/238:15 pm
MKE
- ISP
1 stop13h 15m
Southwest
Tue 7/286:00 am
ISP
- MKE
1 stop6h 50m
Southwest
Deal found 6/29![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 6/29. 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 7/248:15 pm
MKE
- ISP
1 stop12h 30m
Southwest
Tue 7/284:40 pm
ISP
- MKE
1 stop6h 45m
Southwest
Deal found 6/29![Southwest logo]()
$348
This Southwest deal was found by Cheapflights users on 7/1. 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 8/15:40 pm
MKE
- ISP
1 stop4h 35m
Southwest
Sun 8/96:20 am
ISP
- MKE
1 stop6h 50m
Southwest
Deal found 7/1![Southwest logo]()
$378
This Southwest deal was found by Cheapflights users on 7/3. 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 8/26:50 am
MKE
- ISP
1 stop3h 55m
Southwest
Thu 8/612:35 pm
ISP
- MKE
2 stops8h 40m
Southwest
Deal found 7/3![Southwest logo]()
$311
This Southwest deal was found by Cheapflights users on 7/3. 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 8/106:25 am
MKE
- ISP
1 stop5h 10m
Southwest
Fri 8/144:05 pm
ISP
- MKE
1 stop5h 35m
Southwest
Deal found 7/3![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 6/29. 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 8/145:00 pm
MKE
- ISP
1 stop4h 05m
Southwest
Sun 8/166:20 am
ISP
- MKE
2 stops8h 15m
Southwest
Deal found 6/29![Southwest logo]()
$416
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 July 4, 2026.
Search for one-way flight options from Milwaukee to Islip. Find affordable one-way fares based on user searches. Data last updated July 4, 2026.
This Booking.com deal was found by Cheapflights users on 7/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/198:43 am
MKE
- ISP
1 stop24h 10m
Frontier
Deal found 7/3![Frontier logo]()
$148
This Southwest deal was found by Cheapflights users on 7/3. 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 7/196:00 am
MKE
- ISP
2 stops7h 55m
Southwest
Deal found 7/3![Southwest logo]()
$296
This Southwest deal was found by Cheapflights users on 6/29. 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 7/1110:15 am
MKE
- ISP
1 stop5h 40m
Southwest
Deal found 6/29![Southwest logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/198:43 am
MKE
- ISP
3 stops49h 33m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$341
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 July 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $306 (Southwest) |
One-way from | $148 (Booking.com) |
Popular in | November |
Cheapest in | January |
Average price | $424 |
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 2,558,603 searches. Data last updated July 4, 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 - ISP
MKEISP
Milwaukee-Mitchell
Mon 8/10
6:25 am-12:35 pm
1 stop5h 10m
Islip Long Island
Fri 8/14
4:05 pm-8:40 pm
1 stop5h 35m
$306
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Fri 7/24
8:15 pm-9:45 am
1 stop12h 30m
Islip Long Island
Tue 7/28
4:40 pm-10:25 pm
1 stop6h 45m
$348
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Sat 8/1
5:40 pm-11:15 pm
1 stop4h 35m
Islip Long Island
Sun 8/9
6:20 am-12:10 pm
1 stop6h 50m
$378
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Thu 7/23
8:15 pm-10:30 am
1 stop13h 15m
Islip Long Island
Tue 7/28
6:00 am-11:50 am
1 stop6h 50m
$395
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Fri 8/14
11:45 am-10:05 pm
2 stops9h 20m
Islip Long Island
Sun 8/16
6:20 am-1:35 pm
2 stops8h 15m
$421
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Wed 7/22
6:45 am-11:50 am
1 stop4h 05m
Islip Long Island
Tue 7/28
6:00 am-11:50 am
1 stop6h 50m
$450
Cheapest one-way
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Sun 7/19
8:43 am-9:53 am
1 stop24h 10m
$148
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Sun 7/19
6:00 am-2:55 pm
2 stops7h 55m
$296
Quickest one-way
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Sat 7/11
10:15 am-4:55 pm
1 stop5h 40m
$340
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Sun 7/19
8:43 am-11:16 am
3 stops49h 33m
$341
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 July.
| 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 July 4, 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
7.9
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
7.9
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
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.
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 July 4, 2026.
Milwaukee and Islip flights
Browse other Milwaukee and Islip flight options. Last updated on July 4, 2026.
Other flights from Milwaukee
Browse through other flights departing from Milwaukee. Flights are based on user searches made on Cheapflights and were last updated on July 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 2,558,603 searches. Data last updated July 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$232 | Average$374 | FlexibilityNo cancel fee | On-time63% |