$98 Cheap Flights from Milwaukee (MKE) to Islip (ISP)

View $98 flight on Tue, Oct 28, 2025Opens in a new window

Popular airlines from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP)

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Cheap Flights from Milwaukee to Islip (MKE-ISP)

Prices were available within the past 7 days and start at $98 for one-way flights and $231 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Wed, Oct 29 - Fri, Oct 31
MKE
Milwaukee
ISP
Islip
$231 Roundtrip, found 3 days ago
$231
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from Milwaukee to Islip, returning Fri, Oct 31, priced at $231 found 3 days ago
Southwest Airlines
Fri, Oct 24 - Tue, Oct 28
MKE
Milwaukee
ISP
Islip
$259 Roundtrip, found 4 days ago
$259
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Fri, Oct 24 from Milwaukee to Islip, returning Tue, Oct 28, priced at $259 found 4 days ago
Southwest Airlines
Fri, Oct 24 - Tue, Oct 28
MKE
Milwaukee
ISP
Islip
$264 Roundtrip, found 4 days ago
$264
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Fri, Oct 24 from Milwaukee to Islip, returning Tue, Oct 28, priced at $264 found 4 days ago
Frontier Airlines
Wed, Jan 7 - Thu, Jan 22
MKE
Milwaukee
ISP
Islip
$274 Roundtrip, found 4 days ago
$274
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Jan 7 from Milwaukee to Islip, returning Thu, Jan 22, priced at $274 found 4 days ago
Southwest Airlines
Wed, Oct 29 - Fri, Oct 31
MKE
Milwaukee
ISP
Islip
$276 Roundtrip, found 3 days ago
$276
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from Milwaukee to Islip, returning Fri, Oct 31, priced at $276 found 3 days ago
Southwest Airlines
Wed, Oct 29 - Fri, Oct 31
MKE
Milwaukee
ISP
Islip
$283 Roundtrip, found 3 days ago
$283
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from Milwaukee to Islip, returning Fri, Oct 31, priced at $283 found 3 days ago
Frontier Airlines
Sat, Jan 10 - Thu, Jan 22
MKE
Milwaukee
ISP
Islip
$284 Roundtrip, found 4 days ago
$284
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, Jan 10 from Milwaukee to Islip, returning Thu, Jan 22, priced at $284 found 4 days ago
Southwest Airlines
Thu, Oct 23 - Mon, Oct 27
MKE
Milwaukee
ISP
Islip
$288 Roundtrip, found 4 days ago
$288
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Thu, Oct 23 from Milwaukee to Islip, returning Mon, Oct 27, priced at $288 found 4 days ago
Southwest Airlines
Fri, Oct 24 - Tue, Oct 28
MKE
Milwaukee
ISP
Islip
$295 Roundtrip, found 4 days ago
$295
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Fri, Oct 24 from Milwaukee to Islip, returning Tue, Oct 28, priced at $295 found 4 days ago
JetBlue Airways
Fri, Oct 3 - Tue, Oct 21
MKE
Milwaukee
ISP
Islip
$677 Roundtrip, found 6 days ago
$677
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Fri, Oct 3 from Milwaukee to Islip, returning Tue, Oct 21, priced at $677 found 6 days ago

Frequently asked questions

How much does a flight from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP) cost?
Snag a cheap one-way flight from $98 or cheap return flight from $231 from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP)?
The cheapest month to fly from MKE to ISP is October, when there's less demand. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest MKE to ISP flight.
How many flights per day from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP)?
You'll have to book a flight with a layover when traveling from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from MKE to ISP?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP)?
Select a flight from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Islip from General Mitchell Intl. Airport (MKE)?
Take a direct flight from General Mitchell Intl. Airport (MKE) to Islip and arrive at LaGuardia Airport (LGA). Another entry point into this city is John F. Kennedy Intl. Airport (JFK).
Is it cheaper to buy a plane ticket from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP) last-minute?
Booking your plane ticket from MKE to ISP just before your journey is generally more expensive. However, if you're flexible with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a MKE to ISP flight and hotel package?
Booking a MKE to ISP flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from General Mitchell Intl. Airport (MKE) to MacArthur Airport (ISP)?
Typically, it's possible to cancel or reschedule your MKE to ISP flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
General Mitchell Intl.
Destination airport
MacArthur
Roundtrip price
$230
Distance
775 mi

Book with confidence

Book with confidence

Milwaukee to Islip Flights

The cheapest times to fly from Milwaukee to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Milwaukee to Islip are during the month of October. You can find some of the cheapest flights from Milwaukee to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Milwaukee to Islip

Sunday is one of the best days to book for cheap flights from Milwaukee to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Milwaukee to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Milwaukee to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $98 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Milwaukee to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Milwaukee to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Milwaukee to Islip Flights

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*Available to One Key members.