HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$149+ Cheap flights from Madison (MSN) 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — MIA
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Madison to Key Largo with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Madison Truax Field to Key Largo are usually found in June or August, booked 80 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Madison to Key Largo

Keep the following information in mind while searching for Madison to Key Largo flight deals. Data was last updated March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Frontier)

One-way from

$149
(Frontier)

Popular in

March

Cheapest in

June

Average price

$563
Provider with most accurate pricing for Madison Truax Field-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Madison Truax Field-Miami flights.
Search Deals
From Madison Truax Field to Key Largo
Search Deals
One-way flight from Madison Truax Field to Key Largo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Madison to Key Largo

Cheapest flights from Madison to Key Largo
Explore the most affordable flight options available from Madison to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This Frontier deal was found by Cheapflights users on 3/24. 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.
Sun 4/61:52 pmMSN - MIA
1 stop14h 29mFrontier
Sat 4/128:42 pmMIA - MSN
1 stop17h 20mFrontier
Deal found 3/24$297
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Sat 5/33:30 pmMSN - MIA
1 stop6h 20mAmerican Airlines
Tue 5/65:18 amMIA - MSN
1 stop6h 15mAmerican Airlines
Deal found 3/25$307
This Delta deal was found by Cheapflights users on 3/24. 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.
Wed 4/306:20 amMSN - MIA
1 stop6h 32mDelta
Mon 5/57:06 pmMIA - MSN
1 stop5h 36mDelta
Deal found 3/24$334
This United Airlines deal was found by Cheapflights users on 3/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/33:22 pmMSN - MIA
1 stop7h 24mUnited Airlines
Tue 5/61:05 pmMIA - MSN
2 stops9h 23mUnited Airlines
Deal found 3/25$392
This Mytrip deal was found by Cheapflights users on 3/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/44:15 pmMSN - MIA
2 stops37h 00mMultiple Airlines
Tue 4/88:59 amMIA - MSN
3 stops25h 09mMultiple Airlines
Deal found 3/24$559

Cheapflights Fare Finder

Customize your flight search to find flights from Madison 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 March 25, 2025.
Use the filters below to find and compare flights from Madison to Key Largo that are best for you.

Fly from

Madison

Fly to

Key Largo

Route

Depart

Return

Price

MadisonMiami

MSN - MIA

MSNMIA

Madison Truax Field

Sun 4/6

1:52 pm-5:21 am

1 stop14h 29m

Miami

Sat 4/12

8:42 pm-1:02 pm

1 stop17h 20m

$297

MadisonMiami

MSN - MIA

MSNMIA

Madison Truax Field

Tue 4/22

6:20 am-1:52 pm

1 stop6h 32m

Miami

Wed 4/30

8:23 am-2:05 pm

1 stop6h 42m

$307

MadisonMiami

MSN - MIA

MSNMIA

Madison Truax Field

Sat 5/3

6:30 am-4:15 pm

2 stops8h 45m

Miami

Wed 5/7

12:20 pm-7:32 pm

1 stop8h 12m

$312

MadisonMiami

MSN - MIA

MSNMIA

Madison Truax Field

Tue 4/1

4:15 pm-12:49 am

1 stop7h 34m

Miami

Wed 4/30

6:00 am-10:33 am

1 stop5h 33m

$357

MadisonMiami

MSN - MIA

MSNMIA

Madison Truax Field

Fri 4/4

4:15 pm-6:15 am

2 stops37h 00m

Miami

Tue 4/8

8:59 am-9:08 am

3 stops25h 09m

$559

MadisonMiami

MSN - MIA

MSNMIA

Madison Truax Field

Sun 3/30

2:04 pm-5:16 am

1 stop14h 12m

$215

MadisonMiami

MSN - MIA

MSNMIA

Madison Truax Field

Sun 3/30

8:15 am-10:37 pm

2 stops13h 22m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Best time to book a flight from Madison to Key Largo

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

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

Use this chart to determine the optimal time to book a round-trip flight from Madison to Key Largo. Price data was last updated on March 21, 2025.

To ensure you get the cheapest price possible for a flight from Madison to Key Largo, you should look to book at least 80 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 Madison to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Madison to Key Largo (average of $229). Flying from Madison 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 MSN to KE9?

Find hourly flight availability from Madison 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 March 25, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Madison to Key Largo as you normally would.

Rainfall in Key Largo by month

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

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

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

If weather is an important factor for your trip to Key Largo, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

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 March 25, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Madison to Key Largo by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Frontier
6.0
Okay
3,273 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

Find useful and relevant information for your journey from Madison 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 Madison to Key Largo?

    Most people fly from Madison Truax Field (MSN) if they book a flight from Madison to Key Largo. On average, Truax Field has 0 outbound flights to Key Largo per day from 4 airlines. Madison Truax Field is conveniently located just 5.4 mi from Madison’s city center.

  • What are the cheapest airlines to fly from Madison to Key Largo one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $149. Users have also found prices from $189 and $214 on Delta and American Airlines, respectively.

  • What are the most reliable airlines from Madison to Key Largo?

    Before booking your flight to Key Largo from Madison, check out the most reliable airlines to get you to your destination on time: Qatar Airways (94%), American Airlines (89%), Envoy Air( 89%).

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Madison to Key Largo (average of $229). Flying from Madison 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Madison to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Miami flights
O'Hare Intl to Orlando flights
O'Hare Intl to Tampa flights
Minneapolis to Orlando flights
Minneapolis to Fort Myers flights
O'Hare Intl to Fort Myers flights
Minneapolis to Fort Lauderdale flights
Minneapolis to Miami flights
Minneapolis to Tampa flights
O'Hare Intl to West Palm Beach flights
O'Hare Intl to Jacksonville flights
O'Hare Intl to Sarasota flights
Milwaukee to Orlando flights
O'Hare Intl to Panama City flights
O'Hare Intl to Key West flights
O'Hare Intl to Pensacola flights
Milwaukee to Fort Lauderdale flights
Milwaukee to Miami flights
Appleton to Orlando flights
Minneapolis to Sarasota flights
Minneapolis to Pensacola flights
Milwaukee to Fort Myers flights
Minneapolis to Valparaiso flights
Milwaukee to Tampa flights
Appleton to Tampa flights
Minneapolis to St Petersburg flights
Appleton to Orlando Sanford Intl flights
O'Hare Intl to Valparaiso flights
Appleton to Fort Myers flights
Appleton to St Petersburg flights
Minneapolis to Jacksonville flights
Minneapolis to Key West flights
Appleton to Sarasota flights
Madison to Fort Myers flights
Minneapolis to West Palm Beach flights
Minneapolis to Panama City flights
Green Bay to Tampa flights
Madison to Orlando flights
Milwaukee to Jacksonville flights
Appleton to Fort Lauderdale flights
Milwaukee to Key West flights
O'Hare Intl to Daytona Beach flights
Green Bay to Orlando flights
Milwaukee to Sarasota flights
O'Hare Intl to Gainesville flights
Milwaukee to Pensacola flights
Madison to Tampa flights
Madison to Sarasota flights
Madison to Miami flights

Top 4 airlines flying from Madison to Key Largo

Discover the top 4 airlines that operate flights from Madison 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$108Average$428FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$230Average$291FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$239Average$429FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$259Average$512FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.