What is the cheapest airline to fly from Milwaukee to Islip, New York round-trip?

Currently priced at $319, Southwest will fly you from Milwaukee to Islip, New York and back. In addition to Southwest, many other airlines offer competitively priced options for your trip.

What is the cheapest day to fly from Milwaukee to Islip, New York?

Travelers seeking maximum savings on their Milwaukee to Islip, New York flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Milwaukee to Islip, New York?

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 124% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Milwaukee to Islip, New York?

To save up to 50% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Milwaukee to Islip, New York from $208 1-2 weeks out and tickets from $357 for flights departing within the next 72 hours.

What is the cheapest month to fly from Milwaukee to Islip, New York?

Flights from Milwaukee to Islip, New York lean towards being more expensive in March. Prices are generally better when you fly from Milwaukee to Islip, New York in September, with the cheapest ticket starting at $114.

What is the cheapest time of day to fly from MKE to ISP?

A simple way to save on the total cost of your ticket is to fly from Milwaukee to Islip, New York in the morning. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight at noon.

Most accurate provider : When it comes to deals on Milwaukee-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Milwaukee-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Milwaukee-Islip, New York flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Milwaukee-Islip, New York flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Milwaukee-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Milwaukee to Islip that include hotel bookings?

Yes. In addition to deals on Milwaukee to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Milwaukee to Islip?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Milwaukee to Islip.

Can I find deals for business class flights from Milwaukee to Islip?

Yes. Cheapflights offers flight deals from Milwaukee to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$319+ Flights from Milwaukee to Islip, NY

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1. Tell us where you want to go

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Cheap flight deals from Milwaukee to Islip

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$319 (Southwest)
Popular in	March
Cheapest in	September
Average price	$339

Provider with most accurate pricing for Milwaukee-Mitchell-Islip Long Island flight deals.

Search Deals

Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Islip Long Island flights.

Search Deals

From Milwaukee-Mitchell to Islip Long Island

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($49 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Milwaukee to Islip

Cheapest flights from Milwaukee to Islip
Explore the most affordable flight options available from Milwaukee to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

sáb. 5/173:45 pmMKE - ISP

1 stop6h 10mSouthwest

sáb. 5/241:55 pmISP - MKE

1 stop8h 20mSouthwest

Deal found 4/17

$319

Best flights from Milwaukee to Islip
Discover carefully curated flight deals from Milwaukee to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 17, 2025.

sáb. 5/173:45 pmMKE - ISP

1 stop6h 10mSouthwest

sáb. 5/241:55 pmISP - MKE

1 stop8h 20mSouthwest

Deal found 4/17

$319

Last-minute flights from Milwaukee to Islip
Discover last-minute flight deals from Milwaukee to Islip. Data last updated abril 17, 2025 and is based on user searches.

sáb. 5/173:45 pmMKE - ISP

1 stop6h 10mSouthwest

sáb. 5/241:55 pmISP - MKE

1 stop8h 20mSouthwest

Deal found 4/17

$319

Cheapflights Fare Finder

Use the filters below to find and compare flights from Milwaukee to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MilwaukeeIslip

MKE - ISP

MKEISP

Milwaukee-Mitchell

sáb. 5/17

3:45 pm-10:55 pm

1 stop6h 10m

Islip Long Island

sáb. 5/24

1:55 pm-9:15 pm

1 stop8h 20m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Compare providers for flights from Milwaukee to Islip

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Milwaukee to Islip in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Milwaukee-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Milwaukee-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Milwaukee-Islip, New York flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Milwaukee-Islip, New York flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Milwaukee-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Milwaukee to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Milwaukee with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Milwaukee to Islip

What is the cheapest month to book a flight from Milwaukee to Islip, New York?

Currently, January is the cheapest month in which you can book a flight from Milwaukee to Islip, New York (average of $108). Flying from Milwaukee to Islip, New York in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Islip by month

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Islip

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,280 reviews

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What is the cheapest airline to fly from Milwaukee to Islip, New York round-trip?
Currently priced at $319, Southwest will fly you from Milwaukee to Islip, New York and back. In addition to Southwest, many other airlines offer competitively priced options for your trip.
Can I find deals for flights from Milwaukee to Islip that include hotel bookings?
Yes. In addition to deals on Milwaukee to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Milwaukee to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Milwaukee to Islip.
Can I find deals for business class flights from Milwaukee to Islip?
Yes. Cheapflights offers flight deals from Milwaukee to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Milwaukee to Islip, New York?
Currently, January is the cheapest month in which you can book a flight from Milwaukee to Islip, New York (average of $108). Flying from Milwaukee to Islip, New York in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Southampton

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Top airline flying from Milwaukee to Islip

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$271	Average$376	FlexibilityNo cancel fee	On-time63%

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$319+ Cheap flights from Milwaukee to Islip, NY (MKE - ISP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Milwaukee to Islip with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Milwaukee to Islip

Most accurate provider

Most trusted provider

Round-trip from

Popular in

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Average price

Find flight deals from Milwaukee to Islip

Cheapest flights from Milwaukee to IslipExplore the most affordable flight options available from Milwaukee to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

Explore the most affordable flight options available from Milwaukee to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Milwaukee to Islip that are best for you.

Compare providers for flights from Milwaukee to Islip

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Milwaukee to Islip in April.

Best time to book a flight from Milwaukee to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Milwaukee with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Milwaukee to Islip

What is the cheapest month to book a flight from Milwaukee to Islip, New York?

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated abril 17, 2025.

Related info for your journey

Find useful and relevant information for your journey from Milwaukee to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from Milwaukee to Islip, New York round-trip?

Can I find deals for flights from Milwaukee to Islip that include hotel bookings?

How can I find direct flights from Milwaukee to Islip?

Can I find deals for business class flights from Milwaukee to Islip?

What is the cheapest month to book a flight from Milwaukee to Islip, New York?

Traveling to a place near Milwaukee?

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Alternative routes for Milwaukee to Islip

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Top airline flying from Milwaukee to Islip

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Cheapest flights from Milwaukee to Islip
Explore the most affordable flight options available from Milwaukee to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.