$120+ 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ISP
Jun 16 — Jun 231
Round-trip
1 adult, Economy
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Find cheap flights from Milwaukee to Islip with Cheapflights
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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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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 May 17, 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 May 17, 2026.
This Frontier deal was found by Cheapflights users on 5/13. 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.
Thu 6/118:53 am
MKE
- ISP
1 stop11h 04m
Frontier
Wed 6/179:52 pm
ISP
- MKE
1 stop11h 06m
Frontier
Deal found 5/13![Frontier logo]()
$238
This Southwest deal was found by Cheapflights users on 5/13. 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 7/85:25 pm
MKE
- ISP
1 stop4h 10m
Southwest
Sun 7/126:00 am
ISP
- MKE
1 stop6h 45m
Southwest
Deal found 5/13![Southwest logo]()
$447
This Southwest deal was found by Cheapflights users on 5/17. 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 7/212:25 pm
MKE
- ISP
2 stops10h 15m
Southwest
Sun 7/55:55 pm
ISP
- MKE
1 stop6h 40m
Southwest
Deal found 5/17![Southwest logo]()
$478
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/112:08 pm
MKE
- ISP
2 stops20h 55m
Frontier
Mon 7/610:48 am
ISP
- MKE
1 stop22h 10m
Frontier
Deal found 5/17![Frontier logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/112:08 pm
MKE
- ISP
2 stops20h 55m
Frontier
Sat 7/410:48 am
ISP
- MKE
1 stop22h 10m
Frontier
Deal found 5/17![Frontier logo]()
$565
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:53 am
MKE
- ISP
1 stop24h 10m
Multiple Airlines
Sat 7/411:57 am
ISP
- MKE
2 stops21h 01m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$567
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:53 am
MKE
- ISP
1 stop24h 10m
Frontier
Mon 7/610:48 am
ISP
- MKE
1 stop22h 10m
Frontier
Deal found 5/17![Frontier logo]()
$569
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/312:08 pm
MKE
- ISP
2 stops20h 55m
Frontier
Mon 7/610:48 am
ISP
- MKE
1 stop22h 10m
Frontier
Deal found 5/17![Frontier logo]()
$579
This Southwest deal was found by Cheapflights users on 5/13. 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.
Tue 5/269:25 am
MKE
- ISP
1 stop6h 10m
Southwest
Wed 5/276:30 am
ISP
- MKE
1 stop6h 25m
Southwest
Deal found 5/13![Southwest logo]()
$585
This Southwest deal was found by Cheapflights users on 5/13. 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.
Tue 5/262:45 pm
MKE
- ISP
1 stop6h 25m
Southwest
Thu 5/286:00 am
ISP
- MKE
2 stops7h 00m
Southwest
Deal found 5/13![Southwest logo]()
$590
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 May 17, 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 May 17, 2026.
This Frontier deal was found by Cheapflights users on 5/13. 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.
Thu 6/118:53 am
MKE
- ISP
1 stop11h 04m
Frontier
Wed 6/179:52 pm
ISP
- MKE
1 stop11h 06m
Frontier
Deal found 5/13![Frontier logo]()
$238
This Southwest deal was found by Cheapflights users on 5/17. 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 7/212:25 pm
MKE
- ISP
2 stops10h 15m
Southwest
Sun 7/55:55 pm
ISP
- MKE
1 stop6h 40m
Southwest
Deal found 5/17![Southwest logo]()
$478
This Justfly.com deal was found by Cheapflights users on 5/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/49:36 am
MKE
- ISP
2 stops23h 59m
Multiple Airlines
Sun 8/95:29 pm
ISP
- MKE
1 stop16h 16m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$785
This FlightHub deal was found by Cheapflights users on 5/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:36 am
MKE
- ISP
2 stops12h 39m
JetBlue
Sat 7/42:22 pm
ISP
- MKE
2 stops19h 24m
JetBlue
Deal found 5/17![JetBlue logo]()
$849
This Southwest deal was found by Cheapflights users on 5/13. 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 7/85:10 am
MKE
- ISP
2 stops9h 50m
Southwest
Sun 7/126:00 am
ISP
- MKE
1 stop6h 45m
Southwest
Deal found 5/13![Southwest logo]()
$484
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/112:08 pm
MKE
- ISP
2 stops20h 55m
Frontier
Sat 7/410:48 am
ISP
- MKE
1 stop22h 10m
Frontier
Deal found 5/17![Frontier logo]()
$565
Last-minute flights from Milwaukee to IslipDiscover last-minute flight deals from Milwaukee to Islip. Data last updated May 17, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Islip. Data last updated May 17, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 5/13. 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.
Tue 5/269:25 am
MKE
- ISP
1 stop6h 10m
Southwest
Wed 5/276:30 am
ISP
- MKE
1 stop6h 25m
Southwest
Deal found 5/13![Southwest logo]()
$585
This Southwest deal was found by Cheapflights users on 5/13. 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.
Tue 5/262:45 pm
MKE
- ISP
1 stop6h 25m
Southwest
Thu 5/286:00 am
ISP
- MKE
2 stops7h 00m
Southwest
Deal found 5/13![Southwest logo]()
$590
This Travelocity deal was found by Cheapflights users on 5/13. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:41 am
MKE
- ISP
1 stop10h 04m
Multiple Airlines
Wed 5/2712:25 pm
ISP
- MKE
2 stops20h 26m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,218
This Frontier deal was found by Cheapflights users on 5/13. 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.
Thu 6/118:53 am
MKE
- ISP
1 stop11h 04m
Frontier
Wed 6/179:52 pm
ISP
- MKE
1 stop11h 06m
Frontier
Deal found 5/13![Frontier logo]()
$238
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 May 17, 2026.
Search for one-way flight options from Milwaukee to Islip. Find affordable one-way fares based on user searches. Data last updated May 17, 2026.
This Priceline deal was found by Cheapflights users on 5/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:53 am
MKE
- ISP
1 stop11h 04m
Frontier
Deal found 5/15![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 5/15. 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.
Sun 9/208:10 pm
MKE
- ISP
1 stop12h 23m
Frontier
Deal found 5/15![Frontier logo]()
$165
This Southwest deal was found by Cheapflights users on 5/17. 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 9/267:30 am
MKE
- ISP
1 stop6h 00m
Southwest
Deal found 5/17![Southwest logo]()
$189
This Southwest deal was found by Cheapflights users on 5/13. 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 7/236:45 pm
MKE
- ISP
1 stop3h 50m
Southwest
Deal found 5/13![Southwest logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Wed 7/2212:10 pm
MKE
- ISP
2 stops20h 53m
Frontier
Deal found 5/13![Frontier logo]()
$207
This Southwest deal was found by Cheapflights users on 5/17. 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.
Sun 9/275:45 am
MKE
- ISP
2 stops9h 10m
Southwest
Deal found 5/17![Southwest logo]()
$210
This Southwest deal was found by Cheapflights users on 5/15. 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 6/1812:25 pm
MKE
- ISP
2 stops10h 15m
Southwest
Deal found 5/15![Southwest logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Wed 7/2212:10 pm
MKE
- ISP
3 stops29h 59m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Thu 6/188:53 am
MKE
- ISP
3 stops27h 35m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Thu 7/238:43 am
MKE
- ISP
3 stops33h 20m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:10 pm
MKE
- ISP
3 stops21h 41m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$441
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 May 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $238 (Frontier) |
One-way from | $120 (Priceline) |
Popular in | November |
Cheapest in | January |
Average price | $364 |
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 May 17, 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
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Thu 6/11
8:53 am-8:57 pm
1 stop11h 04m
Islip Long Island
Wed 6/17
9:52 pm-7:58 am
1 stop11h 06m
$238
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Thu 7/2
12:25 pm-11:40 pm
2 stops10h 15m
Islip Long Island
Sun 7/5
5:55 pm-11:35 pm
1 stop6h 40m
$478
Quickest round-trip
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Wed 7/8
5:10 am-4:00 pm
2 stops9h 50m
Islip Long Island
Sun 7/12
6:00 am-11:45 am
1 stop6h 45m
$484
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Wed 7/1
12:08 pm-10:03 am
2 stops20h 55m
Islip Long Island
Sat 7/4
10:48 am-7:58 am
1 stop22h 10m
$565
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Tue 8/4
9:36 am-10:35 am
2 stops23h 59m
Islip Long Island
Sun 8/9
5:29 pm-8:45 am
1 stop16h 16m
$785
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Wed 7/1
9:36 am-11:15 pm
2 stops12h 39m
Islip Long Island
Sat 7/4
2:22 pm-8:46 am
2 stops19h 24m
$849
Cheapest one-way
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Thu 6/18
8:53 am-8:57 pm
1 stop11h 04m
$120
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Sun 9/20
8:10 pm-9:33 am
1 stop12h 23m
$165
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Sat 9/26
7:30 am-2:30 pm
1 stop6h 00m
$189
Quickest one-way
MilwaukeeIslip
MKE - ISP
MKEISP
Milwaukee-Mitchell
Thu 7/23
6:45 pm-11:35 pm
1 stop3h 50m
$199
Showing 1-10 of 16 resultsSorted 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 May.
| 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 May 17, 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.
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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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Milwaukee and Islip flights
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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 May 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$244 | Average$374 | FlexibilityNo cancel fee | On-time63% |