$99+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — MIA
Aug 9 — Aug 161
Round-trip
1 adult, Economy
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Find cheap flights from Louisville 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 Louisville Intl to Key Largo are usually found in August or September, booked 36 days in advance, depart on a Friday or Saturday and return on a Friday
Cheap flight deals from Louisville to Key Largo
Cheapest
Best
Last-minute
One-way
Cheapest flights from Louisville to Key LargoExplore 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 July 10, 2026.
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 July 10, 2026.
This American Airlines deal was found by Cheapflights users on 7/8. 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 10/216:00 am
SDF
- MIA
Nonstop2h 34m
American Airlines
Tue 10/278:14 pm
MIA
- SDF
Nonstop2h 45m
American Airlines
Deal found 7/8![American Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 7/7. 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.
Sat 9/266:00 pm
SDF
- MIA
1 stop6h 55m
Delta
Mon 10/57:37 pm
MIA
- SDF
1 stop4h 22m
Delta
Deal found 7/7![Delta logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Wed 8/195:08 pm
MIA
- SDF
2 stops40h 41m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$218
This Southwest deal was found by Cheapflights users on 7/9. 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.
Tue 8/254:00 pm
SDF
- MIA
1 stop4h 10m
Southwest
Tue 9/17:10 am
MIA
- SDF
1 stop4h 00m
Southwest
Deal found 7/9![Southwest logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Thu 8/2011:10 am
MIA
- SDF
2 stops22h 39m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Thu 8/136:42 pm
MIA
- SDF
2 stops25h 38m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 7/9. 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.
Tue 8/255:30 am
SDF
- MIA
2 stops10h 00m
Southwest
Sat 9/56:30 am
MIA
- SDF
2 stops10h 55m
Southwest
Deal found 7/9![Southwest logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Fri 8/146:42 pm
MIA
- SDF
2 stops25h 24m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$243
This American Airlines deal was found by Cheapflights users on 7/9. 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.
Tue 8/256:15 am
SDF
- MIA
Nonstop2h 35m
American Airlines
Tue 9/18:00 pm
MIA
- SDF
Nonstop2h 45m
American Airlines
Deal found 7/9![American Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 10/2211:50 am
SDF
- MIA
1 stop6h 25m
Southwest
Tue 10/277:00 am
MIA
- SDF
1 stop4h 30m
Southwest
Deal found 7/7![Southwest logo]()
$247
Best flights from Louisville to Key LargoDiscover carefully curated flight deals from Louisville to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 10, 2026.
Discover carefully curated flight deals from Louisville to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 10, 2026.
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 10/1511:50 am
SDF
- MIA
1 stop6h 25m
Southwest
Tue 10/205:35 pm
MIA
- SDF
1 stop5h 25m
Southwest
Deal found 7/9![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Fri 8/146:00 am
SDF
- MIA
1 stop5h 11m
United Airlines
Sat 8/2211:30 am
MIA
- SDF
1 stop8h 29m
United Airlines
Deal found 7/6![United Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 7/8. 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.
Fri 8/75:50 pm
SDF
- MIA
1 stop7h 17m
Delta
Sun 8/97:45 pm
MIA
- SDF
1 stop4h 49m
Delta
Deal found 7/8![Delta logo]()
$376
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 10/2211:50 am
SDF
- MIA
1 stop6h 25m
Southwest
Tue 10/276:45 am
MIA
- SDF
2 stops8h 35m
Southwest
Deal found 7/7![Southwest logo]()
$252
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Tue 8/2510:43 am
SDF
- MIA
1 stop8h 09m
United Airlines
Wed 9/212:17 pm
MIA
- SDF
1 stop6h 50m
United Airlines
Deal found 7/9![United Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 7/9. 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 9/1212:05 pm
SDF
- MIA
2 stops7h 10m
Southwest
Mon 9/217:00 am
MIA
- SDF
2 stops6h 05m
Southwest
Deal found 7/9![Southwest logo]()
$330
This Delta deal was found by Cheapflights users on 7/5. 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.
Tue 9/227:05 am
SDF
- MIA
1 stop6h 00m
Delta
Mon 9/287:37 pm
MIA
- SDF
1 stop4h 22m
Delta
Deal found 7/5![Delta logo]()
$378
This United Airlines deal was found by Cheapflights users on 7/9. 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 8/229:00 am
SDF
- MIA
2 stops13h 34m
United Airlines
Wed 8/267:00 am
MIA
- SDF
2 stops12h 07m
United Airlines
Deal found 7/9![United Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 7/7. 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.
Fri 10/27:55 pm
SDF
- MIA
1 stop5h 00m
Delta
Sat 10/36:00 am
MIA
- SDF
1 stop6h 25m
Delta
Deal found 7/7![Delta logo]()
$378
This Southwest deal was found by Cheapflights users on 7/9. 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.
Mon 10/511:50 am
SDF
- MIA
1 stop6h 25m
Southwest
Fri 10/96:55 pm
MIA
- SDF
1 stop5h 15m
Southwest
Deal found 7/9![Southwest logo]()
$359
This Delta deal was found by Cheapflights users on 7/7. 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.
Thu 10/17:55 pm
SDF
- MIA
1 stop5h 00m
Delta
Sat 10/107:05 am
MIA
- SDF
1 stop4h 31m
Delta
Deal found 7/7![Delta logo]()
$378
This Delta deal was found by Cheapflights users on 7/5. 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.
Sat 9/261:37 pm
SDF
- MIA
1 stop5h 28m
Delta
Fri 10/26:00 am
MIA
- SDF
1 stop6h 20m
Delta
Deal found 7/5![Delta logo]()
$378
Last-minute flights from Louisville to Key LargoDiscover last-minute flight deals from Louisville to Key Largo. Data last updated July 10, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Key Largo. Data last updated July 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:06 pm
SDF
- MIA
2 stops17h 47m
Multiple Airlines
Tue 8/113:07 pm
MIA
- SDF
1 stop23h 09m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$248
This Southwest deal was found by Cheapflights users on 7/8. 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.
Mon 8/106:00 pm
SDF
- MIA
1 stop4h 05m
Southwest
Sat 8/157:00 am
MIA
- SDF
1 stop4h 10m
Southwest
Deal found 7/8![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 7/9. 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.
Mon 8/103:20 pm
SDF
- MIA
2 stops6h 45m
Southwest
Tue 8/117:30 am
MIA
- SDF
1 stop5h 10m
Southwest
Deal found 7/9![Southwest logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Wed 8/195:08 pm
MIA
- SDF
2 stops40h 41m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Thu 8/2011:10 am
MIA
- SDF
2 stops22h 39m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Thu 8/136:42 pm
MIA
- SDF
2 stops25h 38m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:56 pm
SDF
- MIA
1 stop5h 34m
Multiple Airlines
Fri 8/146:42 pm
MIA
- SDF
2 stops25h 24m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$243
This Southwest deal was found by Cheapflights users on 7/9. 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.
Tue 8/254:00 pm
SDF
- MIA
1 stop4h 10m
Southwest
Tue 9/17:10 am
MIA
- SDF
1 stop4h 00m
Southwest
Deal found 7/9![Southwest logo]()
$225
This Southwest deal was found by Cheapflights users on 7/9. 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.
Tue 8/255:30 am
SDF
- MIA
2 stops10h 00m
Southwest
Sat 9/56:30 am
MIA
- SDF
2 stops10h 55m
Southwest
Deal found 7/9![Southwest logo]()
$241
This American Airlines deal was found by Cheapflights users on 7/9. 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.
Tue 8/256:15 am
SDF
- MIA
Nonstop2h 35m
American Airlines
Sat 9/59:14 pm
MIA
- SDF
Nonstop2h 37m
American Airlines
Deal found 7/9![American Airlines logo]()
$245
One-way flights from Louisville to Key LargoSearch for one-way flight options from Louisville to Key Largo. Find affordable one-way fares based on user searches. Data last updated July 10, 2026.
Search for one-way flight options from Louisville to Key Largo. Find affordable one-way fares based on user searches. Data last updated July 10, 2026.
This Delta deal was found by Cheapflights users on 7/7. 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.
Tue 8/46:00 am
SDF
- MIA
1 stop5h 00m
Delta
Deal found 7/7![Delta logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:55 pm
SDF
- MIA
2 stops25h 58m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$110
This Southwest deal was found by Cheapflights users on 7/9. 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 8/81:15 pm
SDF
- MIA
1 stop6h 00m
Southwest
Deal found 7/9![Southwest logo]()
$113
This Southwest deal was found by Cheapflights users on 7/8. 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 9/98:45 am
SDF
- MIA
2 stops11h 25m
Southwest
Deal found 7/8![Southwest logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:46 pm
SDF
- MIA
1 stop24h 07m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:10 pm
SDF
- MIA
2 stops23h 20m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:56 am
SDF
- MIA
2 stops22h 02m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$132
This Southwest deal was found by Cheapflights users on 7/9. 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.
Mon 9/76:45 am
SDF
- MIA
1 stop5h 05m
Southwest
Deal found 7/9![Southwest logo]()
$135
Find flight deals from Louisville to Key Largo
Keep the following information in mind while searching for Louisville to Key Largo flight deals. Data was last updated July 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Delta) |
One-way from | $99 (Delta) |
Popular in | June |
Cheapest in | August |
Average price | $412 |
Cheapflights Fare Finder
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 July 10, 2026.
Use the filters below to find and compare flights from Louisville to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Thu 10/15
11:50 am-6:15 pm
1 stop6h 25m
Miami
Tue 10/20
5:35 pm-11:00 pm
1 stop5h 25m
$247
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Thu 10/22
11:50 am-6:15 pm
1 stop6h 25m
Miami
Tue 10/27
6:45 am-3:20 pm
2 stops8h 35m
$252
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Fri 8/14
6:00 am-11:11 am
1 stop5h 11m
Miami
Sat 8/22
11:30 am-7:59 pm
1 stop8h 29m
$327
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Sat 9/12
12:05 pm-7:15 pm
2 stops7h 10m
Miami
Mon 9/21
7:00 am-1:05 pm
2 stops6h 05m
$330
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Tue 8/25
10:43 am-6:52 pm
1 stop8h 09m
Miami
Wed 9/2
12:17 pm-7:07 pm
1 stop6h 50m
$345
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Sat 8/22
9:00 am-10:34 pm
2 stops13h 34m
Miami
Wed 8/26
7:00 am-7:07 pm
2 stops12h 07m
$355
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Mon 10/5
11:50 am-6:15 pm
1 stop6h 25m
Miami
Fri 10/9
6:55 pm-12:10 am
1 stop5h 15m
$359
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Fri 8/7
5:50 pm-1:07 am
1 stop7h 17m
Miami
Sun 8/9
7:45 pm-12:34 am
1 stop4h 49m
$376
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Tue 9/22
7:05 am-1:05 pm
1 stop6h 00m
Miami
Mon 9/28
7:37 pm-11:59 pm
1 stop4h 22m
$378
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Fri 10/2
7:55 pm-12:55 am
1 stop5h 00m
Miami
Sat 10/3
6:00 am-12:25 pm
1 stop6h 25m
$378
Showing 1-10 of 23 resultsSorted by cheapest first
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.
SDF-MIA
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 Louisville to Key Largo
SDF-KE9
SDF-MIA
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 July 10, 2026.
It’s optimal to fly from Louisville to Key Largo in the afternoon. By choosing this option you can save up to 64% on the cost of your flight, compared to a flight at noon.
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 July 10, 2026.
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).
How much does it cost to fly round-trip from Louisville to Key Largo?
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 July 10, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Louisville to Key Largo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
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Top 7 airlines flying from Louisville to Key Largo
Discover the top 7 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 July 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$155 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$76 | Average$230 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$182 | Average$395 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$189 | Average$309 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$200 | Average$429 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$207 | Average$392 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$279 | Average$367 | FlexibilityNo cancel fee | On-time69% |