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

Frontier and Southwest are the most popular carriers operating from Islip Long Island to Milwaukee-Mitchell

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.

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.

$105 Cheap Flights from Islip to Milwaukee in 2026

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Find the cheapest flights from Islip, New York to Milwaukee

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12:00 pm - 5:58 pm

ISP

MKE

6h 58m1 stop

7:48 pm - 8:40 am

MKE

ISP

11h 52m1 stop

$160Frontier

Tue, Jan 20 - Sat, Jan 24

10:43 am - 5:02 pm

ISP

MKE

7h 19m1 stop

8:25 am - 4:23 pm

MKE

ISP

6h 58m1 stop

$522Frontier

Fri, Mar 6 - Sun, Mar 8

10:43 am - 5:02 pm

ISP

MKE

7h 19m1 stop

8:25 am - 3:49 pm

MKE

ISP

6h 24m1 stop

$530Frontier

Fri, Mar 20 - Sun, Mar 22

1:22 pm - 7:35 pm

ISP

MKE

7h 13m1 stop

8:25 am - 3:49 pm

MKE

ISP

6h 24m1 stop

$689Frontier

Mon, Mar 16 - Thu, Mar 19

10:43 am - 5:02 pm

ISP

MKE

7h 19m1 stop

8:25 am - 3:49 pm

MKE

ISP

6h 24m1 stop

$759Frontier

Fri, Mar 13 - Sun, Mar 15

1:42 pm - 8:06 pm

ISP

MKE

7h 24m1 stop

8:25 am - 3:49 pm

MKE

ISP

6h 24m1 stop

$782Frontier

Fri, Mar 13 - Sun, Mar 15

Frontier flights from Islip, New York to Milwaukee

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

Frontier

Jan 20

ISP12:00 pmIslip Long Island

6h 58m

1 stop

MKE5:58 pmMilwaukee-Mitchell

Jan 24

MKE7:48 pmMilwaukee-Mitchell

11h 52m

1 stop

ISP8:40 amIslip Long Island

$160

Find similar

Frontier

Mar 6

ISP10:43 amIslip Long Island

7h 19m

1 stop

MKE5:02 pmMilwaukee-Mitchell

Mar 8

MKE8:25 amMilwaukee-Mitchell

6h 58m

1 stop

ISP4:23 pmIslip Long Island

$522

Find similar

Frontier

Mar 20

ISP10:43 amIslip Long Island

7h 19m

1 stop

MKE5:02 pmMilwaukee-Mitchell

Mar 22

MKE8:25 amMilwaukee-Mitchell

6h 24m

1 stop

ISP3:49 pmIslip Long Island

$530

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

Tue 1/20

12:00 pm-5:58 pm

1 stop6h 58m

Milwaukee-Mitchell

Sat 1/24

7:48 pm-8:40 am

1 stop11h 52m

$160

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 3/6

10:43 am-5:02 pm

1 stop7h 19m

Milwaukee-Mitchell

Sun 3/8

8:25 am-4:23 pm

1 stop6h 58m

$522

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 3/20

10:43 am-5:02 pm

1 stop7h 19m

Milwaukee-Mitchell

Sun 3/22

8:25 am-3:49 pm

1 stop6h 24m

$530

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Mon 3/16

1:22 pm-7:35 pm

1 stop7h 13m

Milwaukee-Mitchell

Thu 3/19

8:25 am-3:49 pm

1 stop6h 24m

$689

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 3/13

10:43 am-5:02 pm

1 stop7h 19m

Milwaukee-Mitchell

Sun 3/15

8:25 am-3:49 pm

1 stop6h 24m

$759

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 3/13

1:42 pm-8:06 pm

1 stop7h 24m

Milwaukee-Mitchell

Sun 3/15

8:25 am-3:49 pm

1 stop6h 24m

$782

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Sat 3/7

10:43 am-5:02 pm

1 stop7h 19m

$105

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Tue 1/20

12:00 pm-5:58 pm

1 stop6h 58m

$110

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Tue 2/10

12:40 pm-7:55 pm

2 stops8h 15m

$116

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Tue 2/10

12:45 pm-7:40 am

3 stops43h 55m

$229

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 $366. 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 $540. 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 $413. 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	6h 58m
Direct flights	None

The fastest flight from Islip, New York to Milwaukee takes 6h 58m

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

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 58m.
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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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.