What airlines fly to Milwaukee?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Milwaukee from Islip, New York according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Milwaukee. Keep in mind that there are 7 different airlines that fly to Milwaukee on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Islip Long Island to Milwaukee-Mitchell?

Southwest is the most popular carrier operating from Islip Long Island to Milwaukee-Mitchell

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.

$162 Cheap Flights from Islip to Milwaukee in 2025/26

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Find the cheapest flights from Islip, New York to Milwaukee

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Cheap round-trip flights

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2:04 pm - 7:20 pm

ISP

MKE

30h 16m1 stop

10:53 am - 7:08 pm

MKE

ISP

31h 15m2 stops

$347Multiple Airlines

Mon, Jan 5 - Fri, Jan 9

6:00 am - 12:10 pm

ISP

MKE

7h 10m1 stop

3:30 pm - 8:25 pm

MKE

ISP

3h 55m1 stop

$357Southwest

Fri, Apr 10 - Mon, Apr 13

7:35 pm - 9:28 am

ISP

MKE

14h 53m1 stop

7:40 pm - 7:51 pm

MKE

ISP

23h 11m1 stop

$362Multiple Airlines

Wed, Jan 7 - Sun, Jan 11

8:24 pm - 7:20 pm

ISP

MKE

23h 56m1 stop

7:56 pm - 7:08 pm

MKE

ISP

22h 12m1 stop

$373Multiple Airlines

Mon, Jan 5 - Fri, Jan 9

4:30 pm - 11:25 pm

ISP

MKE

7h 55m2 stops

2:15 pm - 11:30 pm

MKE

ISP

8h 15m2 stops

$377Southwest

Fri, Apr 10 - Mon, Apr 13

7:35 pm - 9:28 am

ISP

MKE

14h 53m1 stop

7:40 pm - 1:21 pm

MKE

ISP

16h 41m2 stops

$444Multiple Airlines

Wed, Jan 7 - Sun, Jan 11

Southwest flights from Islip, New York to Milwaukee

Our best Southwest deals on Islip, New York to Milwaukee flight tickets

Southwest

Apr 10

ISP6:00 amIslip Long Island

7h 10m

1 stop

MKE12:10 pmMilwaukee-Mitchell

Apr 13

MKE3:30 pmMilwaukee-Mitchell

3h 55m

1 stop

ISP8:25 pmIslip Long Island

$357

Find similar

Southwest

Apr 10

ISP4:30 pmIslip Long Island

7h 55m

2 stops

MKE11:25 pmMilwaukee-Mitchell

Apr 13

MKE2:15 pmMilwaukee-Mitchell

8h 15m

2 stops

ISP11:30 pmIslip Long Island

$377

Find similar

momondo Fare Finder

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

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Mon 1/5

2:04 pm-7:20 pm

1 stop30h 16m

Milwaukee-Mitchell

Fri 1/9

10:53 am-7:08 pm

2 stops31h 15m

$347

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 4/10

6:00 am-12:10 pm

1 stop7h 10m

Milwaukee-Mitchell

Mon 4/13

3:30 pm-8:25 pm

1 stop3h 55m

$357

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Wed 1/7

7:35 pm-9:28 am

1 stop14h 53m

Milwaukee-Mitchell

Sun 1/11

7:40 pm-7:51 pm

1 stop23h 11m

$362

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Mon 1/5

8:24 pm-7:20 pm

1 stop23h 56m

Milwaukee-Mitchell

Fri 1/9

7:56 pm-7:08 pm

1 stop22h 12m

$373

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 4/10

4:30 pm-11:25 pm

2 stops7h 55m

Milwaukee-Mitchell

Mon 4/13

2:15 pm-11:30 pm

2 stops8h 15m

$377

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Wed 1/7

7:35 pm-9:28 am

1 stop14h 53m

Milwaukee-Mitchell

Sun 1/11

7:40 pm-1:21 pm

2 stops16h 41m

$444

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Sun 2/1

5:55 am-12:15 pm

1 stop7h 20m

$162

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Sun 2/1

2:10 pm-10:40 pm

2 stops9h 30m

$214

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Prices

Airlines

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 $367. 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 $537. 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 $415. 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 $499 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	7h 10m
Direct flights	None

The fastest flight from Islip, New York to Milwaukee takes 7h 10m

There are no direct flights from Islip, New York to Milwaukee. There are no popular flight routes from Islip, New York to Milwaukee.

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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 7h 10m.
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.

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Mequon

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Kohler

Port Washington

West Bend

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.