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

Frontier is the most popular carrier 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 42% 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.

$136 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

Enter your travel dates to find the best prices.

6:00 am - 9:50 amISP-MKE

4h 50m1 stop

6:35 am - 11:55 amMKE-ISP

4h 20m1 stop

$280Southwest

Find Deal

Fri, Jan 23 - Mon, Jan 26

12:40 pm - 7:55 pmISP-MKE

8h 15m2 stops

6:35 am - 11:55 amMKE-ISP

4h 20m1 stop

$285Southwest

Find Deal

Fri, Jan 23 - Mon, Jan 26

12:40 pm - 7:55 pmISP-MKE

8h 15m2 stops

5:40 am - 4:15 pmMKE-ISP

9h 35m2 stops

$337Southwest

Find Deal

Fri, Jan 23 - Mon, Jan 26

Southwest flights from Islip, New York to Milwaukee

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

Southwest

Jan 23

ISP6:00 amIslip Long Island

4h 50m

1 stop

MKE9:50 amMilwaukee-Mitchell

Jan 26

MKE6:35 amMilwaukee-Mitchell

4h 20m

1 stop

ISP11:55 amIslip Long Island

$280

Find similar

Southwest

Jan 23

ISP12:40 pmIslip Long Island

8h 15m

2 stops

MKE7:55 pmMilwaukee-Mitchell

Jan 26

MKE6:35 amMilwaukee-Mitchell

4h 20m

1 stop

ISP11:55 amIslip Long Island

$285

Find similar

Southwest

Jan 23

ISP12:40 pmIslip Long Island

8h 15m

2 stops

MKE7:55 pmMilwaukee-Mitchell

Jan 26

MKE5:40 amMilwaukee-Mitchell

9h 35m

2 stops

ISP4:15 pmIslip Long Island

$337

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

Fri 1/23

6:00 am-9:50 am

1 stop4h 50m

Milwaukee-Mitchell

Mon 1/26

6:35 am-11:55 am

1 stop4h 20m

$280

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 1/23

12:40 pm-7:55 pm

2 stops8h 15m

Milwaukee-Mitchell

Mon 1/26

6:35 am-11:55 am

1 stop4h 20m

$285

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 1/23

12:40 pm-7:55 pm

2 stops8h 15m

Milwaukee-Mitchell

Mon 1/26

5:40 am-4:15 pm

2 stops9h 35m

$337

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Sun 12/14

11:15 am-5:09 pm

1 stop6h 54m

$136

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Fri 3/13

6:00 am-12:06 pm

1 stop7h 06m

$201

IslipMilwaukee

ISP - MKE

ISPMKE

Islip Long Island

Thu 2/12

10:42 am-6:45 pm

1 stop9h 03m

$585

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 $379. 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 Sunday will generally be more expensive and average around $543. 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 $496 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	4h 50m
Direct flights	None

The fastest flight from Islip, New York to Milwaukee takes 4h 50m

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 4h 50m.
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.