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$103+ Cheap flights from San Juan to Louisville (SDF)

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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SDF
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to Louisville Intl are usually found in January or February, booked 90 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap flight deals from San Juan to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Louisville (SDF). 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 July 30, 2025.

Round-trip from

$235
(American Airlines)

One-way from

$103
(Delta)

Popular in

May

Cheapest in

January

Average price

$468
From San Juan to Louisville Intl
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One-way flight from San Juan to Louisville Intl
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Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from San Juan to Louisville

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

This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:30 amSJU - SDF
2 stops13h 07mAmerican Airlines
Mon 11/36:50 amSDF - SJU
1 stop15h 57mAmerican Airlines
Deal found 7/29$205
This FlightHub deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/173:19 pmSJU - SDF
2 stops31h 09mSpirit Airlines
Mon 10/278:40 pmSDF - SJU
2 stops17h 31mSpirit Airlines
Deal found 7/30$259
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/138:45 amSJU - SDF
1 stop13h 40mSouthwest
Thu 9/1811:40 amSDF - SJU
1 stop11h 50mSouthwest
Deal found 7/29$284
This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/213:19 pmSJU - SDF
2 stops19h 08mMultiple Airlines
Sat 9/278:30 amSDF - SJU
2 stops26h 35mMultiple Airlines
Deal found 7/29$291
This United Airlines deal was found by Cheapflights users on 7/28. 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 8/141:25 pmSJU - SDF
1 stop9h 33mUnited Airlines
Sat 8/166:08 pmSDF - SJU
2 stops11h 22mUnited Airlines
Deal found 7/28$349

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan to Louisville 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 30, 2025.
Use the filters below to find and compare flights from San Juan to Louisville that are best for you.

Fly from

San Juan

Fly to

Louisville

Route

Depart

Return

Price

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Fri 10/31

5:30 am-6:37 pm

2 stops13h 07m

Louisville Intl

Mon 11/3

6:50 am-11:47 pm

1 stop15h 57m

$205

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Wed 9/17

3:19 pm-10:28 pm

2 stops31h 09m

Louisville Intl

Mon 10/27

8:40 pm-2:11 pm

2 stops17h 31m

$259

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Sat 9/13

8:45 am-10:25 pm

1 stop13h 40m

Louisville Intl

Thu 9/18

11:40 am-11:30 pm

1 stop11h 50m

$284

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Sun 9/21

3:19 pm-10:27 am

2 stops19h 08m

Louisville Intl

Sat 9/27

8:30 am-11:05 am

2 stops26h 35m

$291

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Thu 8/14

1:25 pm-10:58 pm

1 stop9h 33m

Louisville Intl

Sat 8/16

6:08 pm-5:30 am

2 stops11h 22m

$349

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Thu 10/23

5:43 pm-11:59 pm

1 stop6h 16m

$103

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Sat 8/30

6:00 am-6:49 pm

2 stops12h 49m

$109

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Thu 10/23

3:19 pm-9:01 am

2 stops17h 42m

$121

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Wed 10/22

1:59 am-7:35 pm

2 stops17h 36m

$126

San JuanLouisville

SJU - SDF

SJUSDF

San Juan Luis Munoz Marin Intl

Tue 8/19

1:05 am-1:17 pm

2 stops12h 12m

$178

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 11 results
1
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Best time to book a flight from San Juan to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from San Juan 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 San Juan to Louisville

How far ahead should I book a flight from San Juan to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Louisville. Price data was last updated on July 25, 2025.

Booking 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan to Louisville. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Juan to Louisville?

Currently, January is the cheapest month in which you can book a flight from San Juan to Louisville (average of $299). Flying from San Juan to Louisville in April is currently the most expensive (average of $369). 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 SJU to SDF?

Find hourly flight availability from San Juan to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

One of the essential ways to save on airfare from San Juan to Louisville is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 54% on airfare.

How much does it cost to fly round-trip from San Juan to Louisville?

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated July 30, 2025.
Read through reviews of airlines operating flights from San Juan to Louisville, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from San Juan to Louisville. 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 into for flights to Louisville from San Juan?

    If you book a flight to Louisville from San Juan, you will be flying to Louisville Intl, which is the city’s only airport. Louisville Intl (SDF) is located 5.3 mi from the center of Louisville. There are 0 flights from San Juan to Louisville Intl per day from 3 different airlines.

  • What are the cheapest airlines flying from San Juan to Louisville round-trip?

    Cheapflights users have booked flights from San Juan to Louisville round-trip from $235. Other airlines that can offer you cheap pricing are Spirit Airlines, from $259, and Southwest, from $284. These flights start at 41% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from San Juan to Louisville one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $103. Users have also found prices from $126 and $133 on Spirit Airlines and American Airlines, respectively.

  • Can I find deals for flights from San Juan to Louisville that include hotel bookings?

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

  • How can I find direct flights from San Juan to Louisville?

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

  • Can I find deals for business class flights from San Juan to Louisville?

    Yes. Cheapflights offers flight deals from San Juan to Louisville 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 San Juan to Louisville?

    Currently, January is the cheapest month in which you can book a flight from San Juan to Louisville (average of $299). Flying from San Juan to Louisville in April is currently the most expensive (average of $369). 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

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Top 3 airlines flying from San Juan to Louisville

Discover the top 3 airlines that operate flights from San Juan to Louisville. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$205Average$335FlexibilityNo cancel feeOn-time63%
DeltaCheapest$215Average$445FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$305Average$403FlexibilityNo cancel feeOn-time71%

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