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Key Largo

$89+ Cheap flights from Louisville (SDF) 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — MIA
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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The best prices from Louisville Intl to Key Largo are usually found in April or February, booked 84 days in advance, depart on a Monday or Friday and return on a Tuesday

Cheap flight deals from Louisville to Key Largo

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Key Largo (KE9). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$193
(Southwest)

One-way from

$89
(American Airlines)

Popular in

March

Cheapest in

April

Average price

$316
Provider with most accurate pricing for Louisville Intl-Miami flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Miami flights.
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From Louisville Intl to Key Largo
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One-way flight from Louisville Intl to Key Largo
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Louisville to Key Largo

Cheapest flights from Louisville to Key Largo
Explore the most affordable flight options available from Louisville to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This Southwest deal was found by Cheapflights users on 1/30. 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.
Wed 2/269:00 amSDF - MIA
2 stops9h 35mSouthwest
Wed 3/58:45 amMIA - SDF
1 stop6h 05mSouthwest
Deal found 1/30$193
This Delta deal was found by Cheapflights users on 1/30. 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 3/246:59 pmSDF - MIA
1 stop5h 46mDelta
Wed 3/267:10 amMIA - SDF
1 stop4h 52mDelta
Deal found 1/30$197
This American Airlines deal was found by Cheapflights users on 1/30. 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 2/2612:36 pmSDF - MIA
1 stop5h 31mAmerican Airlines
Wed 3/59:30 pmMIA - SDF
Nonstop2h 51mAmerican Airlines
Deal found 1/30$209
This Mytrip deal was found by Cheapflights users on 1/29. 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.
Thu 2/276:00 amSDF - MIA
2 stops13h 29mSpirit Airlines
Mon 3/36:15 amMIA - SDF
2 stops14h 10mSpirit Airlines
Deal found 1/29$241
This Mytrip deal was found by Cheapflights users on 1/29. 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.
Mon 2/1712:33 pmSDF - MIA
1 stop6h 56mMultiple Airlines
Thu 2/206:15 amMIA - SDF
2 stops17h 31mMultiple Airlines
Deal found 1/29$276
This United Airlines deal was found by Cheapflights users on 1/30. 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 3/13:32 pmSDF - MIA
1 stop6h 09mUnited Airlines
Sat 3/88:00 amMIA - SDF
2 stops12h 22mUnited Airlines
Deal found 1/30$366

Find flights from Louisville to Key Largo within your budget

Customize your flight search to find flights from Louisville 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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Wed 2/26

9:00 am-6:35 pm

2 stops9h 35m

Miami

Wed 3/5

8:45 am-2:50 pm

1 stop6h 05m

$193

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Mon 3/17

6:59 pm-12:45 am

1 stop5h 46m

Miami

Wed 3/19

6:00 am-12:02 pm

1 stop6h 02m

$197

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Wed 2/26

12:36 pm-6:07 pm

1 stop5h 31m

Miami

Wed 3/5

9:30 pm-12:21 am

Nonstop2h 51m

$209

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Thu 2/27

6:00 am-7:29 pm

2 stops13h 29m

Miami

Mon 3/3

6:15 am-8:25 pm

2 stops14h 10m

$241

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Mon 2/17

12:33 pm-7:29 pm

1 stop6h 56m

Miami

Thu 2/20

6:15 am-11:46 pm

2 stops17h 31m

$276

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Sat 3/1

3:32 pm-9:41 pm

1 stop6h 09m

Miami

Sat 3/8

8:00 am-8:22 pm

2 stops12h 22m

$366

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Wed 3/5

6:00 am-8:42 am

Nonstop2h 42m

$89

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Wed 3/5

3:30 pm-10:25 pm

1 stop6h 55m

$90

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Tue 2/25

7:05 am-1:46 pm

1 stop6h 41m

$99

LouisvilleMiami

SDF - MIA

SDFMIA

Louisville Intl

Tue 3/4

6:00 am-8:29 am

3 stops26h 29m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 12 results
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Best time to book a flight from Louisville to Key Largo

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

Travel insights for flights from Louisville to Key Largo

Get recent, data-driven insights about flights from Louisville to Key Largo including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Key Largo. Price data was last updated on January 24, 2025.

The price you pay for your flight from Louisville to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Louisville to Key Largo (average of $231). Flying from Louisville 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 SDF to KE9?

Find hourly flight availability from Louisville 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 January 30, 2025.

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

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

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

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

Weekly flight availability from Louisville to Key Largo

Explore weekly flight availability from Louisville to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 30, 2025.

The most flights from SDF to KE9 are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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 January 30, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Louisville to Key Largo have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,454 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,913 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Spirit Airlines
6.3
Okay
8,083 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

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

    Most people fly from Louisville Intl (SDF) if they book a flight from Louisville to Key Largo. On average, Louisville Intl has 2 outbound flights to Key Largo per day from 6 airlines. Louisville Intl is conveniently located just 5.3 mi from Louisville’s city center.

  • How popular is this Louisville to Key Largo flight route?

    Flights from Louisville Intl to Key Largo have been viewed 5 times in the past calendar month.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $89. Southwest flights start at $90 while deals on Delta start at $99 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Louisville to Key Largo on time: American Airlines (76%), Qatar Airways (76%), Atlas Air (0%).

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

    While on average a flight from Louisville to Key Largo is generally $349, our data shows the cheapest flight currently is $108. When looking at the most popular route, (Louisville Intl - Miami), you can expect to pay $179 for that flight.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Louisville to Key Largo (average of $231). Flying from Louisville 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.

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Top 6 airlines flying from Louisville to Key Largo

Discover the top 6 airlines that operate flights from Louisville 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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$45Average$131FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$76Average$134FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$203Average$378FlexibilityNo cancel feeOn-time71%
DeltaCheapest$213Average$375FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$256Average$451FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$278Average$455FlexibilityNo cancel feeOn-time63%
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