$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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — MIA
Mar 13 — Mar 201
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 Tuesday and return on a Monday
Cheap flight deals from Louisville to Key Largo
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Last-minute
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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 February 11, 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 February 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/103:33 pm
SDF
- MIA
2 stops21h 33m
Multiple Airlines
Thu 3/126:00 am
MIA
- SDF
1 stop7h 26m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 2/8. 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.
Fri 2/201:40 pm
SDF
- MIA
1 stop9h 55m
Southwest
Tue 2/242:35 pm
MIA
- SDF
1 stop7h 35m
Southwest
Deal found 2/8![Southwest logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 5/68:06 pm
SDF
- MIA
1 stop14h 26m
Multiple Airlines
Sat 5/97:04 pm
MIA
- SDF
2 stops18h 23m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 2/9. 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.
Sat 3/145:06 pm
SDF
- MIA
1 stop5h 46m
American Airlines
Wed 3/189:07 pm
MIA
- SDF
Nonstop2h 52m
American Airlines
Deal found 2/9![American Airlines logo]()
$240
This Southwest deal was found by Cheapflights users on 2/10. 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 3/311:50 am
SDF
- MIA
2 stops10h 10m
Southwest
Tue 3/106:10 am
MIA
- SDF
2 stops9h 45m
Southwest
Deal found 2/10![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 2/8. 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.
Sun 3/11:40 pm
SDF
- MIA
1 stop9h 55m
Southwest
Wed 3/47:15 am
MIA
- SDF
2 stops9h 35m
Southwest
Deal found 2/8![Southwest logo]()
$242
This American Airlines deal was found by Cheapflights users on 2/10. 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 3/1010:31 am
SDF
- MIA
1 stop5h 29m
American Airlines
Tue 3/179:07 pm
MIA
- SDF
Nonstop2h 52m
American Airlines
Deal found 2/10![American Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/12:26 pm
SDF
- MIA
1 stop26h 30m
Multiple Airlines
Sat 3/75:05 am
MIA
- SDF
2 stops31h 21m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:19 pm
SDF
- MIA
2 stops21h 15m
Multiple Airlines
Thu 3/126:00 am
MIA
- SDF
1 stop7h 26m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$248
This Delta deal was found by Cheapflights users on 2/10. 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 5/67:05 am
SDF
- MIA
1 stop5h 06m
Delta
Sat 5/96:00 am
MIA
- SDF
1 stop4h 19m
Delta
Deal found 2/10![Delta logo]()
$249
This American Airlines deal was found by Cheapflights users on 2/10. 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 3/116:07 am
SDF
- MIA
Nonstop2h 43m
American Airlines
Sat 3/216:40 am
MIA
- SDF
1 stop8h 23m
American Airlines
Deal found 2/10![American Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 2/222:26 pm
SDF
- MIA
1 stop26h 30m
Multiple Airlines
Thu 2/263:46 pm
MIA
- SDF
2 stops16h 54m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$253
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 February 11, 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 February 11, 2026.
This Southwest deal was found by Cheapflights users on 2/8. 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.
Tue 2/2411:50 am
SDF
- MIA
2 stops10h 10m
Southwest
Sat 2/287:00 am
MIA
- SDF
1 stop5h 40m
Southwest
Deal found 2/8![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 6/36:00 am
SDF
- MIA
2 stops10h 16m
United Airlines
Wed 6/174:17 pm
MIA
- SDF
1 stop5h 52m
United Airlines
Deal found 2/10![United Airlines logo]()
$298
This Southwest deal was found by Cheapflights users on 2/10. 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 5/284:45 pm
SDF
- MIA
1 stop6h 15m
Southwest
Thu 6/185:55 am
MIA
- SDF
1 stop4h 15m
Southwest
Deal found 2/10![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 2/10. 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 5/66:20 am
SDF
- MIA
1 stop7h 55m
Southwest
Mon 5/116:40 am
MIA
- SDF
1 stop5h 55m
Southwest
Deal found 2/10![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 2/10. 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 4/712:10 pm
SDF
- MIA
1 stop6h 10m
Southwest
Tue 4/147:00 am
MIA
- SDF
2 stops7h 45m
Southwest
Deal found 2/10![Southwest logo]()
$271
This Southwest deal was found by Cheapflights users on 2/8. 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.
Tue 3/1011:50 am
SDF
- MIA
2 stops9h 55m
Southwest
Tue 3/176:10 am
MIA
- SDF
2 stops9h 45m
Southwest
Deal found 2/8![Southwest logo]()
$276
This Southwest deal was found by Cheapflights users on 2/8. 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.
Fri 5/82:40 pm
SDF
- MIA
2 stops7h 20m
Southwest
Sat 5/166:35 am
MIA
- SDF
1 stop6h 20m
Southwest
Deal found 2/8![Southwest logo]()
$291
This Southwest deal was found by Cheapflights users on 2/10. 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.
Fri 5/82:40 pm
SDF
- MIA
1 stop8h 10m
Southwest
Mon 5/115:45 pm
MIA
- SDF
1 stop4h 35m
Southwest
Deal found 2/10![Southwest logo]()
$296
This Southwest deal was found by Cheapflights users on 2/8. 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 4/294:40 pm
SDF
- MIA
1 stop4h 00m
Southwest
Fri 5/15:45 pm
MIA
- SDF
1 stop4h 35m
Southwest
Deal found 2/8![Southwest logo]()
$296
This Southwest deal was found by Cheapflights users on 2/10. 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.
Sun 5/173:50 pm
SDF
- MIA
1 stop6h 55m
Southwest
Fri 5/226:05 am
MIA
- SDF
1 stop8h 55m
Southwest
Deal found 2/10![Southwest logo]()
$301
This Southwest deal was found by Cheapflights users on 2/10. 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 5/212:40 pm
SDF
- MIA
1 stop8h 10m
Southwest
Sun 5/247:00 am
MIA
- SDF
2 stops8h 40m
Southwest
Deal found 2/10![Southwest logo]()
$301
This Southwest deal was found by Cheapflights users on 2/8. 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 3/412:50 pm
SDF
- MIA
1 stop5h 45m
Southwest
Mon 3/96:15 am
MIA
- SDF
2 stops9h 35m
Southwest
Deal found 2/8![Southwest logo]()
$303
Last-minute flights from Louisville to Key LargoDiscover last-minute flight deals from Louisville to Key Largo. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Key Largo. Data last updated February 11, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 2/7. 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.
Fri 2/201:40 pm
SDF
- MIA
1 stop9h 55m
Southwest
Thu 2/266:50 am
MIA
- SDF
1 stop4h 30m
Southwest
Deal found 2/7![Southwest logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 2/222:26 pm
SDF
- MIA
1 stop26h 30m
Multiple Airlines
Thu 2/263:46 pm
MIA
- SDF
2 stops16h 54m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$253
This Southwest deal was found by Cheapflights users on 2/8. 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.
Sun 3/11:40 pm
SDF
- MIA
1 stop9h 55m
Southwest
Wed 3/47:15 am
MIA
- SDF
2 stops9h 35m
Southwest
Deal found 2/8![Southwest logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/12:26 pm
SDF
- MIA
1 stop26h 30m
Multiple Airlines
Sat 3/75:05 am
MIA
- SDF
2 stops31h 21m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$246
This Southwest deal was found by Cheapflights users on 2/10. 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 3/311:50 am
SDF
- MIA
2 stops10h 10m
Southwest
Tue 3/106:10 am
MIA
- SDF
2 stops9h 45m
Southwest
Deal found 2/10![Southwest logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:19 pm
SDF
- MIA
2 stops33h 45m
Multiple Airlines
Thu 3/126:00 am
MIA
- SDF
1 stop7h 26m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:19 pm
SDF
- MIA
2 stops21h 15m
Multiple Airlines
Thu 3/126:00 am
MIA
- SDF
1 stop7h 26m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/103:33 pm
SDF
- MIA
2 stops21h 33m
Multiple Airlines
Thu 3/126:00 am
MIA
- SDF
1 stop7h 26m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$235
This American Airlines deal was found by Cheapflights users on 2/10. 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 3/1010:31 am
SDF
- MIA
1 stop5h 29m
American Airlines
Tue 3/179:07 pm
MIA
- SDF
Nonstop2h 52m
American Airlines
Deal found 2/10![American Airlines logo]()
$244
This American Airlines deal was found by Cheapflights users on 2/10. 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 3/116:07 am
SDF
- MIA
Nonstop2h 43m
American Airlines
Sat 3/216:40 am
MIA
- SDF
1 stop8h 23m
American Airlines
Deal found 2/10![American Airlines logo]()
$250
This American Airlines deal was found by Cheapflights users on 2/9. 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.
Wed 3/116:07 am
SDF
- MIA
Nonstop2h 43m
American Airlines
Mon 3/169:07 pm
MIA
- SDF
Nonstop2h 52m
American Airlines
Deal found 2/9![American Airlines logo]()
$257
This American Airlines deal was found by Cheapflights users on 2/9. 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.
Sat 3/145:06 pm
SDF
- MIA
1 stop5h 46m
American Airlines
Wed 3/189:07 pm
MIA
- SDF
Nonstop2h 52m
American Airlines
Deal found 2/9![American Airlines logo]()
$240
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 February 11, 2026.
Search for one-way flight options from Louisville to Key Largo. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This Southwest deal was found by Cheapflights users on 2/10. 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 3/2511:25 am
SDF
- MIA
1 stop6h 35m
Southwest
Deal found 2/10![Southwest logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 5/68:06 pm
SDF
- MIA
1 stop14h 26m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$100
This Southwest deal was found by Cheapflights users on 2/8. 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.
Sun 2/226:55 pm
SDF
- MIA
1 stop4h 05m
Southwest
Deal found 2/8![Southwest logo]()
$103
This Southwest deal was found by Cheapflights users on 2/8. 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.
Sun 3/152:15 pm
SDF
- MIA
1 stop8h 30m
Southwest
Deal found 2/8![Southwest logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Thu 5/72:27 pm
SDF
- MIA
1 stop20h 05m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$106
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/75:49 pm
SDF
- MIA
1 stop4h 58m
Delta
Deal found 2/9![Delta logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/122:26 pm
SDF
- MIA
1 stop9h 31m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/239:13 pm
SDF
- MIA
2 stops16h 04m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 5/117:48 pm
SDF
- MIA
2 stops22h 09m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Thu 4/92:26 pm
SDF
- MIA
1 stop21h 12m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/82:26 pm
SDF
- MIA
1 stop9h 31m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$125
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 February 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $235 (Kiwi.com) |
One-way from | $99 (Southwest) |
Popular in | December |
Cheapest in | August |
Average price | $342 |
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 February 11, 2026.
Use the filters below to find and compare flights from Louisville to Key Largo that are best for you.
Fly from
Louisville
Fly to
Key Largo
Route
Depart
Return
Price
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Tue 2/24
11:50 am-10:00 pm
2 stops10h 10m
Miami
Sat 2/28
7:00 am-12:40 pm
1 stop5h 40m
$236
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Thu 5/28
4:45 pm-11:00 pm
1 stop6h 15m
Miami
Thu 6/18
5:55 am-10:10 am
1 stop4h 15m
$266
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Wed 5/6
6:20 am-2:15 pm
1 stop7h 55m
Miami
Mon 5/11
6:40 am-12:35 pm
1 stop5h 55m
$266
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Tue 4/7
12:10 pm-6:20 pm
1 stop6h 10m
Miami
Tue 4/14
7:00 am-2:45 pm
2 stops7h 45m
$271
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Tue 3/10
11:50 am-9:45 pm
2 stops9h 55m
Miami
Tue 3/17
6:10 am-3:55 pm
2 stops9h 45m
$276
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Fri 5/8
2:40 pm-10:00 pm
2 stops7h 20m
Miami
Sat 5/16
6:35 am-12:55 pm
1 stop6h 20m
$291
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Fri 5/8
2:40 pm-10:50 pm
1 stop8h 10m
Miami
Mon 5/11
5:45 pm-10:20 pm
1 stop4h 35m
$296
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Wed 4/29
4:40 pm-8:40 pm
1 stop4h 00m
Miami
Fri 5/1
5:45 pm-10:20 pm
1 stop4h 35m
$296
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Wed 6/3
6:00 am-4:16 pm
2 stops10h 16m
Miami
Wed 6/17
4:17 pm-10:09 pm
1 stop5h 52m
$298
LouisvilleMiami
SDF - MIA
SDFMIA
Louisville Intl
Sun 5/17
3:50 pm-10:45 pm
1 stop6h 55m
Miami
Fri 5/22
6:05 am-3:00 pm
1 stop8h 55m
$301
Showing 1-10 of 21 results
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
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 February 6, 2026.
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 36 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 $60). Flying from Louisville to Key Largo in December is currently the most expensive (average of $84). 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 February 11, 2026.
It’s optimal to fly from Louisville to Key Largo in the evening. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.
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 February 11, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Louisville to Key Largo
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Louisville to Key Largo by cabin class
Find flights from Louisville to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Louisville and Key Largo flights
Browse other Louisville and Key Largo flight options. Last updated on February 11, 2026.
Other flights from Louisville
Browse through other flights departing from Louisville. Flights are based on user searches made on Cheapflights and were last updated on February 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Louisville to Key Largo flights
Consider these flights traveling from Louisville to Key Largo.
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 February 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$112 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$77 | Average$181 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$189 | Average$294 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$198 | Average$362 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$198 | Average$368 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$204 | Average$394 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$374 | FlexibilityNo cancel fee | On-time69% |