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Puerto Rico

$95+ Cheap flights from Louisville (SDF) to Puerto Rico

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SJU
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Louisville to Puerto Rico

Cheapest flights from Louisville to Puerto Rico
Explore the most affordable flight options available from Louisville to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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.
Sat 12/205:05 amSDF - SJU
1 stop16h 00mSpirit Airlines
Thu 12/256:28 pmSJU - SDF
1 stop6h 31mSpirit Airlines
Deal found 12/11$375
This Cheapflightsfares deal was found by Cheapflights users on 12/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:55 amSDF - SJU
1 stop11h 50mSpirit Airlines
Sun 12/216:28 pmSJU - SDF
1 stop6h 31mSpirit Airlines
Deal found 12/10$392
This Delta deal was found by Cheapflights users on 12/11. 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 12/153:16 pmSDF - SJU
1 stop7h 04mDelta
Mon 12/223:44 pmSJU - SDF
1 stop8h 14mDelta
Deal found 12/11$393
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/1211:10 amSDF - SJU
2 stops9h 59mAmerican Airlines
Sun 12/212:44 pmSJU - SDF
1 stop8h 30mAmerican Airlines
Deal found 12/10$418
This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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 12/255:05 amSDF - SJU
1 stop16h 00mSpirit Airlines
Sun 12/286:28 pmSJU - SDF
1 stop6h 31mSpirit Airlines
Deal found 12/11$423
This Cheapflightsfares deal was found by Cheapflights users on 12/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:05 amSDF - SJU
1 stop16h 00mSpirit Airlines
Sat 12/276:28 pmSJU - SDF
1 stop6h 31mSpirit Airlines
Deal found 12/10$436
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Thu 12/259:05 amSDF - SJU
2 stops10h 04mUnited Airlines
Sun 12/287:00 amSJU - SDF
1 stop9h 03mUnited Airlines
Deal found 12/11$445
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:05 amSDF - SJU
1 stop16h 00mSpirit Airlines
Thu 1/16:28 pmSJU - SDF
1 stop6h 31mSpirit Airlines
Deal found 12/11$453
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Thu 12/119:31 amSDF - SJU
1 stop10h 55mUnited Airlines
Sat 12/138:10 amSJU - SDF
1 stop10h 06mUnited Airlines
Deal found 12/10$481
This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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.
Sun 12/215:05 amSDF - SJU
1 stop16h 00mSpirit Airlines
Sun 12/286:28 pmSJU - SDF
1 stop6h 31mSpirit Airlines
Deal found 12/11$488
This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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.
Sat 12/205:05 amSDF - SJU
1 stop16h 00mSpirit Airlines
Sun 12/286:28 pmSJU - SDF
1 stop6h 31mSpirit Airlines
Deal found 12/11$494

Find flight deals from Louisville to Puerto Rico

Keep the following information in mind while searching for Louisville to Puerto Rico flight deals. Data was last updated December 12, 2025.

Round-trip from

$220
(United Airlines)

One-way from

$95
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$565
From Louisville Intl to Puerto Rico
Search Deals
One-way flight from Louisville Intl to Puerto Rico
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Puerto Rico 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 December 12, 2025.
Use the filters below to find and compare flights from Louisville to Puerto Rico that are best for you.

Fly from

Louisville

Fly to

Puerto Rico

Route

Depart

Return

Price

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 1/23

2:10 pm-10:22 pm

1 stop7h 12m

San Juan Luis Munoz Marin Intl

Sat 1/24

7:45 am-8:28 pm

2 stops13h 43m

$220

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 1/28

5:35 am-5:17 pm

1 stop10h 42m

San Juan Luis Munoz Marin Intl

Tue 2/3

2:15 pm-7:39 pm

1 stop6h 24m

$225

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 1/22

7:00 am-11:56 pm

1 stop15h 56m

San Juan Luis Munoz Marin Intl

Wed 1/28

5:51 pm-11:59 pm

1 stop7h 08m

$225

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 1/27

7:00 am-5:17 pm

1 stop9h 17m

San Juan Luis Munoz Marin Intl

Tue 2/3

2:15 pm-11:50 pm

1 stop10h 35m

$225

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 1/20

5:35 am-1:06 pm

1 stop6h 31m

San Juan Luis Munoz Marin Intl

Thu 1/29

3:55 pm-11:50 pm

1 stop8h 55m

$225

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 3/5

7:00 am-9:33 pm

1 stop13h 33m

San Juan Luis Munoz Marin Intl

Sat 3/7

1:30 am-9:09 am

1 stop8h 39m

$265

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 1/29

11:16 am-11:56 pm

1 stop11h 40m

San Juan Luis Munoz Marin Intl

Sat 2/7

7:00 am-9:16 pm

1 stop15h 16m

$265

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 1/22

7:00 am-11:56 pm

1 stop15h 56m

San Juan Luis Munoz Marin Intl

Mon 1/26

11:38 am-10:12 pm

2 stops11h 34m

$265

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 1/31

2:05 pm-6:11 am

2 stops15h 06m

San Juan Luis Munoz Marin Intl

Thu 2/5

8:10 am-8:28 pm

2 stops13h 18m

$315

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 1/26

6:00 am-4:36 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

Thu 1/29

8:10 am-2:48 pm

1 stop7h 38m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 21 results
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Best time to book a flight from Louisville to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico 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.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Puerto Rico

What is the cheapest month to book a flight from Louisville to Puerto Rico?

Currently, April is the cheapest month in which you can book a flight from Louisville to Puerto Rico (average of $97). Flying from Louisville to Puerto Rico in June is currently the most expensive (average of $252). 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 PR?

Find hourly flight availability from Louisville to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s optimal to fly from Louisville to Puerto Rico in the afternoon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Louisville to Puerto Rico?

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

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

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated December 12, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Louisville to Puerto Rico have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,253 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,095 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,050 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,179 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Louisville to Puerto Rico. 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 Puerto Rico?

    For a flight from Louisville to Puerto Rico, you will be flying from Louisville Intl. Louisville Intl (SDF) is just 5.3 mi from the center of the city.

  • How long is the flight from Louisville to Puerto Rico?

    United Airlines and American Airlines can get you from Louisville to Puerto Rico in just under 7h 12m. Your travel time can differ by up to 6h 38m. The distance from Louisville to Puerto Rico is about 1807 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Louisville to Puerto Rico one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $79. Users have also found prices from $112 and $137 on American Airlines and Delta, respectively.

  • What are the most popular routes from Louisville to Puerto Rico?

    When deciding which route to take from Louisville to Puerto Rico consider Louisville Intl - San Juan Luis Munoz Marin Intl, Louisville Intl - Culebra or Louisville Intl - Vieques as they are the most popular.

  • Can I find deals for flights from Louisville to Puerto Rico that include hotel bookings?

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

  • How can I find direct flights from Louisville to Puerto Rico?

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

  • Can I find deals for business class flights from Louisville to Puerto Rico?

    Yes. Cheapflights offers flight deals from Louisville to Puerto Rico 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 Puerto Rico?

    Currently, April is the cheapest month in which you can book a flight from Louisville to Puerto Rico (average of $97). Flying from Louisville to Puerto Rico in June is currently the most expensive (average of $252). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Louisville to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Louisville to Puerto Rico

Discover the top 5 airlines that operate flights from Louisville to Puerto Rico. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$152Average$300FlexibilityNo cancel feeOn-time65%
DeltaCheapest$221Average$402FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$225Average$471FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$255Average$453FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$259Average$559FlexibilityNo cancel feeOn-time69%

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