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Key Largo

$109+ Cheap flights from Milwaukee (MKE) to Key Largo, FL

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — MIA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Milwaukee-Mitchell to Key Largo are usually found in August or September, booked 52 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Milwaukee to Key Largo

Keep the following information in mind while searching for Milwaukee to Key Largo flight deals. Data was last updated September 16, 2025.

Round-trip from

$178
(Frontier)

One-way from

$109
(Delta)

Popular in

March

Cheapest in

August

Average price

$304
From Milwaukee-Mitchell to Key Largo
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One-way flight from Milwaukee-Mitchell to Key Largo
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Highest demand for flights based on searches. 12% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Milwaukee to Key Largo

Cheapest flights from Milwaukee to Key Largo
Explore the most affordable flight options available from Milwaukee to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:04 pmMKE - MIA
1 stop9h 15mFrontier
Fri 10/246:00 amMIA - MKE
1 stop14h 18mFrontier
Deal found 9/15$178
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:04 pmMKE - MIA
1 stop9h 15mFrontier
Mon 10/278:00 amMIA - MKE
2 stops12h 18mFrontier
Deal found 9/15$203
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:36 pmMKE - MIA
2 stops14h 47mFrontier
Mon 10/66:00 amMIA - MKE
1 stop14h 19mFrontier
Deal found 9/15$205
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:04 pmMKE - MIA
1 stop9h 15mFrontier
Sun 11/210:32 pmMIA - MKE
2 stops21h 47mFrontier
Deal found 9/16$214
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/223:26 pmMKE - MIA
1 stop6h 19mDelta
Tue 1/68:45 amMIA - MKE
1 stop9h 25mDelta
Deal found 9/15$217
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1212:31 pmMKE - MIA
1 stop9h 25mAmerican Airlines
Wed 11/192:32 pmMIA - MKE
1 stop10h 10mAmerican Airlines
Deal found 9/14$221
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:04 pmMKE - MIA
1 stop9h 15mFrontier
Fri 11/76:00 amMIA - MKE
1 stop14h 19mFrontier
Deal found 9/14$223
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:04 pmMKE - MIA
1 stop9h 15mFrontier
Fri 10/176:00 amMIA - MKE
1 stop14h 18mFrontier
Deal found 9/14$234
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/68:04 pmMKE - MIA
2 stops17h 28mFrontier
Mon 10/136:00 amMIA - MKE
1 stop14h 18mFrontier
Deal found 9/14$244
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/222:35 pmMKE - MIA
2 stops9h 05mSouthwest
Thu 11/2712:25 pmMIA - MKE
1 stop5h 30mSouthwest
Deal found 9/14$245

Cheapflights Fare Finder

 
Customize your flight search to find flights from Milwaukee to Key Largo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Milwaukee to Key Largo that are best for you.

Fly from

Milwaukee

Fly to

Key Largo

Route

Depart

Return

Price

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Fri 10/24

8:04 pm-6:19 am

1 stop9h 15m

Miami

Mon 10/27

6:00 am-7:18 pm

1 stop14h 18m

$178

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Mon 12/15

5:12 pm-12:46 am

1 stop6h 34m

Miami

Wed 12/17

10:32 am-4:17 pm

1 stop6h 45m

$217

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Sun 12/14

3:17 pm-10:14 pm

1 stop5h 57m

Miami

Wed 12/17

10:32 am-2:22 pm

1 stop4h 50m

$217

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Fri 10/31

8:04 pm-6:19 am

1 stop9h 15m

Miami

Fri 11/7

6:00 am-7:19 pm

1 stop14h 19m

$223

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Sat 11/22

5:10 pm-12:25 am

1 stop6h 15m

Miami

Thu 11/27

12:25 pm-4:55 pm

1 stop5h 30m

$240

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Wed 10/15

6:00 am-2:03 pm

1 stop7h 03m

Miami

Wed 10/22

8:11 am-1:09 pm

1 stop5h 58m

$251

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Tue 10/7

2:04 pm-8:51 pm

1 stop5h 47m

Miami

Sat 10/18

6:00 am-11:01 am

1 stop6h 01m

$251

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Sat 10/11

5:59 pm-12:29 am

1 stop5h 30m

Miami

Sat 10/18

6:00 am-11:01 am

1 stop6h 01m

$251

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Wed 11/12

6:00 am-4:10 pm

2 stops9h 10m

Miami

Wed 11/19

9:30 am-10:40 pm

2 stops14h 10m

$261

MilwaukeeMiami

MKE - MIA

MKEMIA

Milwaukee-Mitchell

Tue 10/28

12:20 pm-9:55 pm

2 stops8h 35m

Miami

Sat 11/1

5:45 am-3:00 pm

1 stop10h 15m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 23 results
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Best time to book a flight from Milwaukee to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo 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 Key Largo

How far ahead should I book a flight from Milwaukee to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Milwaukee to Key Largo. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Milwaukee to Key Largo, you should look to book at least 52 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Milwaukee to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Milwaukee to Key Largo (average of $232). Flying from Milwaukee to Key Largo in March is currently the most expensive (average of $289). 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.

What is the cheapest time of day to fly from MKE to KE9?

Find hourly flight availability from Milwaukee to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Milwaukee to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Milwaukee to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Milwaukee to Key Largo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Milwaukee to Key Largo flight should consider departing on Thursday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Milwaukee to Key Largo, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,019 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • What airport do you fly from for flights from Milwaukee to Key Largo?

    If you book a flight to Key Largo from Milwaukee, you will be flying from Milwaukee-Mitchell, which is the city’s only airport. Milwaukee-Mitchell (MKE) is located 6.4 mi from the center of Milwaukee. There are 0 flights from Milwaukee-Mitchell to Key Largo per day from 5 different airlines.

  • How long is the flight from Milwaukee to Key Largo?

    Frontier, Delta, and Southwest can get you from Milwaukee to Key Largo in just under 6h 15m. Your travel time can differ by up to 3h. Milwaukee and Key Largo are separated by a distance of 1260 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest flights from Milwaukee to Key Largo?

    While on average a flight from Milwaukee to Key Largo is generally $625, our data shows the cheapest flight currently is $199. When looking at the most popular route, (Milwaukee-Mitchell - Miami), you can expect to pay $217 for that flight.

  • Can I find deals for flights from Milwaukee to Key Largo that include hotel bookings?

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

  • How can I find direct flights from Milwaukee to Key Largo?

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

  • Can I find deals for business class flights from Milwaukee to Key Largo?

    Yes. Cheapflights offers flight deals from Milwaukee to Key Largo 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 Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Milwaukee to Key Largo (average of $232). Flying from Milwaukee to Key Largo in March is currently the most expensive (average of $289). 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

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Top 5 airlines flying from Milwaukee to Key Largo

Discover the top 5 airlines that operate flights from Milwaukee to Key Largo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$67Average$219FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$210Average$412FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$361FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$395FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$229Average$410FlexibilityNo cancel feeOn-time63%

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