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Cheap flights from Islip, New York to Milwaukee from $141

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Milwaukee departing on 6/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Milwaukee

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:15 pm - 10:50 pm
ISP
-
MKE
6h 35m
1 stop
Southwest Logo
2:45 pm - 10:10 pm
MKE
-
ISP
6h 25m
1 stop
$334Southwest
Tue, May 26 - Tue, Jun 2
Southwest Logo
5:15 pm - 10:50 pm
ISP
-
MKE
6h 35m
1 stop
Southwest Logo
5:50 am - 1:50 pm
MKE
-
ISP
7h 00m
2 stops
$339Southwest
Tue, May 26 - Tue, Jun 2
Southwest Logo
6:45 am - 4:20 pm
ISP
-
MKE
10h 35m
1 stop
Southwest Logo
6:25 am - 12:35 pm
MKE
-
ISP
5h 10m
1 stop
$348Southwest
Fri, Sep 4 - Mon, Sep 7
Southwest Logo
3:05 pm - 12:05 am
ISP
-
MKE
10h 00m
2 stops
Southwest Logo
5:25 pm - 10:35 pm
MKE
-
ISP
4h 10m
1 stop
$367Southwest
Fri, Jul 17 - Tue, Jul 21
Southwest Logo
5:50 pm - 11:50 pm
ISP
-
MKE
7h 00m
1 stop
Southwest Logo
5:25 pm - 10:35 pm
MKE
-
ISP
4h 10m
1 stop
$375Southwest
Fri, Jul 17 - Tue, Jul 21
Southwest Logo
3:05 pm - 12:05 am
ISP
-
MKE
10h 00m
2 stops
Southwest Logo
5:10 am - 4:00 pm
MKE
-
ISP
9h 50m
2 stops
$387Southwest
Fri, Jul 17 - Tue, Jul 21
Southwest Logo
4:10 pm - 9:45 pm
ISP
-
MKE
6h 35m
2 stops
Southwest Logo
11:30 am - 10:10 pm
MKE
-
ISP
9h 40m
2 stops
$397Southwest
Tue, May 26 - Tue, Jun 2
Southwest Logo
5:10 pm - 10:50 pm
ISP
-
MKE
6h 40m
1 stop
Southwest Logo
2:45 pm - 10:10 pm
MKE
-
ISP
6h 25m
1 stop
$411Southwest
Fri, May 15 - Tue, May 19
Southwest Logo
5:10 pm - 10:50 pm
ISP
-
MKE
6h 40m
1 stop
Southwest Logo
11:30 am - 10:10 pm
MKE
-
ISP
9h 40m
2 stops
$416Southwest
Fri, May 15 - Tue, May 19
Southwest Logo
6:00 am - 2:20 pm
ISP
-
MKE
9h 20m
2 stops
Southwest Logo
5:50 am - 1:50 pm
MKE
-
ISP
7h 00m
2 stops
$421Southwest
Sat, May 16 - Wed, May 20

Southwest flights from Islip, New York to Milwaukee

Our best Southwest deals on Islip, New York to Milwaukee flight tickets
Southwest
May 26
ISP5:15 pmIslip Long Island
6h 35m
1 stop
MKE10:50 pmMilwaukee-Mitchell
Jun 2
MKE2:45 pmMilwaukee-Mitchell
6h 25m
1 stop
ISP10:10 pmIslip Long Island
$334
Southwest
May 26
ISP5:15 pmIslip Long Island
6h 35m
1 stop
MKE10:50 pmMilwaukee-Mitchell
Jun 2
MKE5:50 amMilwaukee-Mitchell
7h 00m
2 stops
ISP1:50 pmIslip Long Island
$339
Southwest
Sep 4
ISP6:45 amIslip Long Island
10h 35m
1 stop
MKE4:20 pmMilwaukee-Mitchell
Sep 7
MKE6:25 amMilwaukee-Mitchell
5h 10m
1 stop
ISP12:35 pmIslip Long Island
$348

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Milwaukee 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, momondo users made 832,500 searches. Data last updated May 3, 2026.
Use the filters below to find and compare flights from Islip, New York to Milwaukee that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Tue 5/26

5:15 pm-10:50 pm

1 stop6h 35m

Milwaukee-Mitchell

Tue 6/2

2:45 pm-10:10 pm

1 stop6h 25m

$334

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Tue 5/26

5:15 pm-10:50 pm

1 stop6h 35m

Milwaukee-Mitchell

Tue 6/2

5:50 am-1:50 pm

2 stops7h 00m

$339

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 9/4

6:45 am-4:20 pm

1 stop10h 35m

Milwaukee-Mitchell

Mon 9/7

6:25 am-12:35 pm

1 stop5h 10m

$348

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 7/17

3:05 pm-12:05 am

2 stops10h 00m

Milwaukee-Mitchell

Tue 7/21

5:25 pm-10:35 pm

1 stop4h 10m

$367
Quickest round-trip

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 7/17

5:50 pm-11:50 pm

1 stop7h 00m

Milwaukee-Mitchell

Tue 7/21

5:25 pm-10:35 pm

1 stop4h 10m

$375

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 7/17

3:05 pm-12:05 am

2 stops10h 00m

Milwaukee-Mitchell

Tue 7/21

5:10 am-4:00 pm

2 stops9h 50m

$387

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Tue 5/26

4:10 pm-9:45 pm

2 stops6h 35m

Milwaukee-Mitchell

Tue 6/2

11:30 am-10:10 pm

2 stops9h 40m

$397

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 5/15

5:10 pm-10:50 pm

1 stop6h 40m

Milwaukee-Mitchell

Tue 5/19

2:45 pm-10:10 pm

1 stop6h 25m

$411

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 5/15

5:10 pm-10:50 pm

1 stop6h 40m

Milwaukee-Mitchell

Tue 5/19

11:30 am-10:10 pm

2 stops9h 40m

$416

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Sat 5/16

6:00 am-2:20 pm

2 stops9h 20m

Milwaukee-Mitchell

Wed 5/20

5:50 am-1:50 pm

2 stops7h 00m

$421

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Milwaukee from

How to get the cheapest flight ticket from Islip, New York to Milwaukee

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Milwaukee?

According to our data, Wednesday is the cheapest day to fly to Milwaukee from Islip, New York. The lowest ticket price found for a Wednesday departure recently was $420. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Islip, New York to Milwaukee on a Monday will generally be more expensive and average around $597. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Milwaukee?

In the evening is the cheapest time of day to fly from Islip, New York to Milwaukee when you can find flight prices for as low as $416. Flying to Milwaukee in the evening is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Milwaukee, so prices are often more expensive at around $608 per ticket.

When to book flights from Islip, New York to Milwaukee

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Milwaukee according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Milwaukee (ISP to MKE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Milwaukee

Fastest flight time

6h 55m

Direct flights

None
The fastest flight from Islip, New York to Milwaukee takes 6h 55m
There are no direct flights from Islip, New York to Milwaukee. There are no popular flight routes from Islip, New York to Milwaukee.
Search flight deals

Frequently asked questions about flying from Islip, New York to Milwaukee

  • How far is Islip Long Island to Milwaukee-Mitchell by plane?

    There are 771.0 mi between Islip Long Island and Milwaukee-Mitchell. By plane, this route typically takes 6h 55m.

  • When did momondo last update prices for flights from Islip Long Island Airport to Milwaukee-Mitchell Airport?

    Prices for flights from Islip Long Island Airport to Milwaukee-Mitchell Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Milwaukee-Mitchell Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Milwaukee-Mitchell Airport.

  • What documentation or ID do you need to fly to Milwaukee-Mitchell Airport?

    The travel and health documents you'll need for your trip to Milwaukee-Mitchell Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Milwaukee-Mitchell Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Milwaukee?

Book flights to Milwaukee if you plan to visit one of these locations
Sheboygan
Waukesha
Wauwatosa
Oak Creek
Mequon
Glendale
Pewaukee
West Bend
Port Washington
Kohler
New Berlin
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Milwaukee?

It is quick and easy to find Islip to Milwaukee flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Milwaukee that suits you.

Can I find flights from Islip to Milwaukee with flexible booking policies on momondo?

Yes. All flights to Milwaukee from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to Milwaukee?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Islip to Milwaukee.

I’m not ready to book a flight from Islip to Milwaukee right now. Can momondo alert me if prices change?

Price alerts on flights to Milwaukee from Islip are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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