$112+ Cheap flights from Louisville (SDF) to San Juan
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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SJU
May 27 — Jun 31
Round-trip
1 adult, Economy
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Cheapest flights from Louisville to San JuanExplore the most affordable flight options available from Louisville to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.
Explore the most affordable flight options available from Louisville to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 8/147:31 am
SDF
- SJU
1 stop14h 53m
American Airlines
Wed 8/1910:33 am
SJU
- SDF
1 stop12h 04m
American Airlines
Deal found 4/23![American Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/2210:33 am
SDF
- SJU
2 stops41h 28m
Multiple Airlines
Sat 5/308:04 pm
SJU
- SDF
1 stop13h 24m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$277
This CheapOair deal was found by Cheapflights users on 4/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Sun 5/178:04 pm
SJU
- SDF
1 stop13h 24m
Spirit Airlines
Deal found 4/26![Spirit Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/2210:33 am
SDF
- SJU
2 stops41h 28m
Multiple Airlines
Thu 5/288:04 pm
SJU
- SDF
1 stop13h 24m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:10 pm
SDF
- SJU
1 stop18h 55m
Multiple Airlines
Sun 8/236:00 am
SJU
- SDF
1 stop27h 49m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/1110:33 am
SDF
- SJU
1 stop8h 26m
Multiple Airlines
Wed 5/278:32 am
SJU
- SDF
2 stops24h 56m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 4/22. 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
- SJU
2 stops9h 54m
Multiple Airlines
Thu 5/148:04 pm
SJU
- SDF
1 stop22h 54m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$291
This Mytrip deal was found by Cheapflights users on 4/22. 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 5/2210:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Sat 5/308:04 pm
SJU
- SDF
1 stop13h 24m
Spirit Airlines
Deal found 4/22![Spirit Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:12 am
SDF
- SJU
1 stop13h 29m
Multiple Airlines
Sun 8/236:00 am
SJU
- SDF
1 stop27h 49m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$296
This CheapOair deal was found by Cheapflights users on 4/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2410:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Sat 5/308:04 pm
SJU
- SDF
1 stop13h 24m
Spirit Airlines
Deal found 4/25![Spirit Airlines logo]()
$299
Best flights from Louisville to San JuanDiscover carefully curated flight deals from Louisville to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 27, 2026.
Discover carefully curated flight deals from Louisville to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 27, 2026.
This Delta deal was found by Cheapflights users on 4/22. 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 6/86:00 am
SDF
- SJU
1 stop10h 46m
Delta
Thu 6/115:56 pm
SJU
- SDF
1 stop6h 36m
Delta
Deal found 4/22![Delta logo]()
$316
This Southwest deal was found by Cheapflights users on 4/22. 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 9/273:35 pm
SDF
- SJU
1 stop7h 10m
Southwest
Fri 10/25:00 am
SJU
- SDF
2 stops10h 00m
Southwest
Deal found 4/22![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Sun 5/249:00 am
SDF
- SJU
2 stops12h 24m
United Airlines
Sat 5/303:56 pm
SJU
- SDF
1 stop7h 53m
United Airlines
Deal found 4/25![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 4/24. 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.
Sat 8/1512:53 pm
SDF
- SJU
1 stop9h 30m
Delta
Thu 8/202:40 pm
SJU
- SDF
1 stop6h 12m
Delta
Deal found 4/24![Delta logo]()
$316
This Delta deal was found by Cheapflights users on 4/24. 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 8/126:00 am
SDF
- SJU
1 stop5h 56m
Delta
Thu 8/201:06 pm
SJU
- SDF
1 stop7h 46m
Delta
Deal found 4/24![Delta logo]()
$316
This Southwest deal was found by Cheapflights users on 4/26. 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 9/102:15 pm
SDF
- SJU
2 stops8h 50m
Southwest
Thu 9/246:00 am
SJU
- SDF
2 stops9h 30m
Southwest
Deal found 4/26![Southwest logo]()
$411
This Delta deal was found by Cheapflights users on 4/22. 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 9/257:00 am
SDF
- SJU
1 stop9h 31m
Delta
Wed 9/305:41 pm
SJU
- SDF
1 stop6h 18m
Delta
Deal found 4/22![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 4/26. 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 9/188:20 am
SDF
- SJU
1 stop8h 11m
Delta
Sat 9/2612:58 pm
SJU
- SDF
1 stop6h 03m
Delta
Deal found 4/26![Delta logo]()
$423
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/176:00 am
SDF
- SJU
1 stop5h 44m
Delta
Sun 6/215:56 pm
SJU
- SDF
1 stop6h 36m
Delta
Deal found 4/25![Delta logo]()
$423
This Delta deal was found by Cheapflights users on 4/23. 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.
Sun 6/71:02 pm
SDF
- SJU
1 stop9h 25m
Delta
Thu 6/112:04 pm
SJU
- SDF
1 stop7h 11m
Delta
Deal found 4/23![Delta logo]()
$423
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:05 pm
SDF
- SJU
1 stop9h 12m
Delta
Tue 5/261:14 pm
SJU
- SDF
1 stop11h 11m
Delta
Deal found 4/25![Delta logo]()
$463
This Delta deal was found by Cheapflights users on 4/26. 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 5/113:37 pm
SDF
- SJU
1 stop6h 40m
Delta
Tue 5/265:43 pm
SJU
- SDF
1 stop6h 42m
Delta
Deal found 4/26![Delta logo]()
$463
Last-minute flights from Louisville to San JuanDiscover last-minute flight deals from Louisville to San Juan. Data last updated April 27, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to San Juan. Data last updated April 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/22. 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
- SJU
2 stops9h 54m
Multiple Airlines
Thu 5/148:04 pm
SJU
- SDF
1 stop22h 54m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/1110:33 am
SDF
- SJU
1 stop8h 26m
Multiple Airlines
Wed 5/278:32 am
SJU
- SDF
2 stops24h 56m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$286
This CheapOair deal was found by Cheapflights users on 4/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Sun 5/178:04 pm
SJU
- SDF
1 stop13h 24m
Spirit Airlines
Deal found 4/26![Spirit Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/2210:33 am
SDF
- SJU
2 stops41h 28m
Multiple Airlines
Sat 5/308:04 pm
SJU
- SDF
1 stop13h 24m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/2210:33 am
SDF
- SJU
2 stops41h 28m
Multiple Airlines
Thu 5/288:04 pm
SJU
- SDF
1 stop13h 24m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$282
This Mytrip deal was found by Cheapflights users on 4/22. 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 5/2210:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Sat 5/308:04 pm
SJU
- SDF
1 stop13h 24m
Spirit Airlines
Deal found 4/22![Spirit Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/2210:33 am
SDF
- SJU
2 stops41h 28m
Multiple Airlines
Fri 5/296:00 am
SJU
- SDF
1 stop14h 20m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/2210:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Thu 5/288:04 pm
SJU
- SDF
1 stop13h 24m
Spirit Airlines
Deal found 4/23![Spirit Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/238:06 pm
SDF
- SJU
2 stops31h 55m
Multiple Airlines
Sat 5/308:04 pm
SJU
- SDF
1 stop13h 24m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$300
This CheapOair deal was found by Cheapflights users on 4/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2410:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Sat 5/308:04 pm
SJU
- SDF
1 stop13h 24m
Spirit Airlines
Deal found 4/25![Spirit Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/2410:33 am
SDF
- SJU
1 stop29h 22m
Multiple Airlines
Thu 5/288:04 pm
SJU
- SDF
1 stop13h 24m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$301
One-way flights from Louisville to San JuanSearch for one-way flight options from Louisville to San Juan. Find affordable one-way fares based on user searches. Data last updated April 27, 2026.
Search for one-way flight options from Louisville to San Juan. Find affordable one-way fares based on user searches. Data last updated April 27, 2026.
This CheapOair deal was found by Cheapflights users on 4/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1710:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Deal found 4/22![Spirit Airlines logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/810:33 am
SDF
- SJU
2 stops37h 26m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/125:03 pm
SDF
- SJU
1 stop23h 02m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/1710:33 am
SDF
- SJU
2 stops21h 31m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/98:06 pm
SDF
- SJU
2 stops54h 02m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/47:48 pm
SDF
- SJU
2 stops44h 02m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$191
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 5/89:43 am
SDF
- SJU
1 stop11h 32m
American Airlines
Deal found 4/22![American Airlines logo]()
$198
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/89:10 am
SDF
- SJU
2 stops12h 14m
United Airlines
Deal found 4/22![United Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:06 pm
SDF
- SJU
2 stops28h 35m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$228
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:33 am
SDF
- SJU
1 stop8h 26m
Spirit Airlines
Deal found 4/23![Spirit Airlines logo]()
$231
Find flight deals from Louisville to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to San Juan (PR1). 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 April 27, 2026.
Round-trip from | $244 (American Airlines) |
|---|---|
One-way from | $112 (CheapOair) |
Popular in | December |
Cheapest in | October |
Average price | $390 |
Cheapflights Fare Finder
Customize your flight search to find flights from Louisville to San Juan 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 April 27, 2026.
Use the filters below to find and compare flights from Louisville to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Mon 6/8
6:00 am-4:46 pm
1 stop10h 46m
San Juan Luis Munoz Marin Intl
Thu 6/11
5:56 pm-12:32 am
1 stop6h 36m
$316
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Sat 8/15
12:53 pm-10:23 pm
1 stop9h 30m
San Juan Luis Munoz Marin Intl
Thu 8/20
2:40 pm-8:52 pm
1 stop6h 12m
$316
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Wed 8/12
6:00 am-11:56 am
1 stop5h 56m
San Juan Luis Munoz Marin Intl
Thu 8/20
1:06 pm-8:52 pm
1 stop7h 46m
$316
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Fri 9/25
7:00 am-4:31 pm
1 stop9h 31m
San Juan Luis Munoz Marin Intl
Wed 9/30
5:41 pm-11:59 pm
1 stop6h 18m
$387
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Sun 9/27
3:35 pm-10:45 pm
1 stop7h 10m
San Juan Luis Munoz Marin Intl
Fri 10/2
5:00 am-3:00 pm
2 stops10h 00m
$396
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Thu 9/10
2:15 pm-11:05 pm
2 stops8h 50m
San Juan Luis Munoz Marin Intl
Thu 9/24
6:00 am-3:30 pm
2 stops9h 30m
$411
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Fri 9/18
8:20 am-4:31 pm
1 stop8h 11m
San Juan Luis Munoz Marin Intl
Sat 9/26
12:58 pm-7:01 pm
1 stop6h 03m
$423
Quickest round-trip
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Wed 6/17
6:00 am-11:44 am
1 stop5h 44m
San Juan Luis Munoz Marin Intl
Sun 6/21
5:56 pm-12:32 am
1 stop6h 36m
$423
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Sun 6/7
1:02 pm-10:27 pm
1 stop9h 25m
San Juan Luis Munoz Marin Intl
Thu 6/11
2:04 pm-9:15 pm
1 stop7h 11m
$423
LouisvilleSan Juan
SDF - SJU
SDFSJU
Louisville Intl
Sun 5/24
9:00 am-9:24 pm
2 stops12h 24m
San Juan Luis Munoz Marin Intl
Sat 5/30
3:56 pm-11:49 pm
1 stop7h 53m
$444
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Louisville to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Louisville with our price prediction graph.
SDF-PR1
SDF-SJU
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 San Juan
SDF-PR1
SDF-SJU
How far ahead should I book a flight from Louisville to San Juan?
To ensure you get the cheapest price possible for a flight from Louisville to San Juan, you should look to book at least 59 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 Louisville to San Juan?
Currently, January is the cheapest month in which you can book a flight from Louisville to San Juan (average of $113). Flying from Louisville to San Juan in June is currently the most expensive (average of $280). 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.
How much does it cost to fly round-trip from Louisville to San Juan?
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated April 27, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Louisville to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Louisville to San Juan. 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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Alternative routes for Louisville to San Juan
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Complete your trip
Complete your trip to San Juan by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Louisville to San Juan by cabin class
Find flights from Louisville to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Louisville and San Juan flights
Browse other Louisville and San Juan flight options. Last updated on April 27, 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 April 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Louisville to San Juan
Discover the top 5 airlines that operate flights from Louisville to San Juan. 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 April 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$176 | Average$389 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$198 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$434 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$240 | Average$423 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$246 | Average$502 | FlexibilityNo cancel fee | On-time69% |