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Luis Munoz Marin Intl

$113+ Cheap flights from Louisville (SDF) to Luis Munoz Marin Intl (SJU)

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SJU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to San Juan Luis Munoz Marin Intl are usually found in October or January, booked 66 days in advance, depart on a Tuesday or Sunday and return on a Thursday

Cheap flight deals from Louisville to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Luis Munoz Marin Intl (SJU). 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 September 11, 2025.

Round-trip from

$225
(American Airlines)

One-way from

$113
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$416
From Louisville Intl to San Juan Luis Munoz Marin Intl
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One-way flight from Louisville Intl to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Louisville to Luis Munoz Marin Intl

Cheapest flights from Louisville to Luis Munoz Marin Intl
Explore the most affordable flight options available from Louisville to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 10/133:35 pmSDF - SJU
1 stop8h 24mAmerican Airlines
Tue 10/285:30 amSJU - SDF
2 stops10h 15mAmerican Airlines
Deal found 9/10$225
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/227:33 amSDF - SJU
1 stop16h 26mAmerican Airlines
Fri 10/315:30 amSJU - SDF
1 stop7h 35mAmerican Airlines
Deal found 9/9$230
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:33 amSDF - SJU
1 stop16h 26mAmerican Airlines
Sat 11/15:30 amSJU - SDF
1 stop12h 28mAmerican Airlines
Deal found 9/11$241
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:05 amSDF - SJU
2 stops9h 50mAmerican Airlines
Fri 10/315:30 amSJU - SDF
2 stops13h 07mAmerican Airlines
Deal found 9/9$251
This Delta deal was found by Cheapflights users on 9/11. 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 11/103:09 pmSDF - SJU
1 stop7h 04mDelta
Tue 11/183:20 pmSJU - SDF
1 stop6h 54mDelta
Deal found 9/11$265
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/237:33 amSDF - SJU
1 stop16h 26mAmerican Airlines
Sun 10/265:30 amSJU - SDF
1 stop12h 13mAmerican Airlines
Deal found 9/10$267
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/163:35 pmSDF - SJU
1 stop8h 24mAmerican Airlines
Wed 10/225:30 amSJU - SDF
2 stops10h 15mAmerican Airlines
Deal found 9/10$285
This Delta deal was found by Cheapflights users on 9/11. 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 11/103:09 pmSDF - SJU
1 stop7h 04mDelta
Wed 11/193:20 pmSJU - SDF
1 stop6h 54mDelta
Deal found 9/11$288
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 9/2410:55 amSDF - SJU
2 stops13h 02mUnited Airlines
Sat 9/271:30 pmSJU - SDF
1 stop10h 00mUnited Airlines
Deal found 9/11$305

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Luis Munoz Marin Intl 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 September 11, 2025.
Use the filters below to find and compare flights from Louisville to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Louisville

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 10/22

7:33 am-11:59 pm

1 stop16h 26m

San Juan Luis Munoz Marin Intl

Fri 10/31

5:30 am-3:45 pm

2 stops10h 15m

$230

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 1/24

11:10 am-9:30 pm

1 stop9h 20m

San Juan Luis Munoz Marin Intl

Sat 1/31

6:00 am-12:35 pm

1 stop7h 35m

$265

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 11/10

3:09 pm-11:13 pm

1 stop7h 04m

San Juan Luis Munoz Marin Intl

Fri 11/14

3:20 pm-9:14 pm

1 stop6h 54m

$265

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 1/13

1:00 pm-11:40 pm

1 stop9h 40m

San Juan Luis Munoz Marin Intl

Tue 1/20

6:50 pm-12:17 am

1 stop6h 27m

$285

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 10/7

3:50 pm-10:45 pm

1 stop6h 55m

San Juan Luis Munoz Marin Intl

Mon 10/13

10:05 am-10:55 pm

1 stop12h 50m

$285

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 10/29

6:05 am-3:55 pm

2 stops9h 50m

San Juan Luis Munoz Marin Intl

Sun 11/2

8:00 am-12:22 am

1 stop17h 22m

$285

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 9/24

10:55 am-11:57 pm

2 stops13h 02m

San Juan Luis Munoz Marin Intl

Sat 9/27

1:30 pm-11:30 pm

1 stop10h 00m

$305

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 9/24

8:10 am-4:31 pm

1 stop8h 21m

San Juan Luis Munoz Marin Intl

Sat 9/27

2:15 pm-10:44 pm

1 stop8h 29m

$305

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 10/10

5:20 pm-11:50 pm

1 stop6h 30m

San Juan Luis Munoz Marin Intl

Fri 10/17

5:30 pm-12:10 am

1 stop6h 40m

$305

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 11/11

9:00 am-12:36 am

2 stops14h 36m

San Juan Luis Munoz Marin Intl

Wed 11/19

8:30 am-2:45 pm

1 stop7h 15m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 24 results
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Best time to book a flight from Louisville to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Louisville to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Luis Munoz Marin Intl. Price data was last updated on August 29, 2025.

The price you pay for your flight from Louisville to San Juan Luis Munoz Marin Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 66 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 San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Louisville to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Louisville to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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 SJU?

Find hourly flight availability from Louisville to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s optimal to fly from Louisville to San Juan Luis Munoz Marin Intl Airport in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Louisville to San Juan Luis Munoz Marin Intl Airport?

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

Travelers seeking maximum savings on their Louisville to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Thursday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Louisville to San Juan Luis Munoz Marin Intl Airport?

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Louisville to San Juan Luis Munoz Marin Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Louisville to Luis Munoz Marin Intl. 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 San Juan Luis Munoz Marin Intl?

    For a flight from Louisville to San Juan Luis Munoz Marin Intl, you will be flying from Louisville Intl. Louisville Intl (SDF) is just 5.3 mi from the center of the city. Louisville Intl is the only Louisville airport and it handles 0 outbound flights to San Juan Luis Munoz Marin Intl per day. 5 airlines have flights to San Juan Luis Munoz Marin Intl from Louisville Intl on a regular basis.

  • How long is the flight from Louisville to San Juan Luis Munoz Marin Intl Airport?

    A quick flight from Louisville to San Juan Luis Munoz Marin Intl Airport can take about 7h 04m. American Airlines provides one of the quickest options available for as low as $265. The distance between Louisville and San Juan Luis Munoz Marin Intl Airport is about 1807 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Louisville to San Juan Luis Munoz Marin Intl Airport round-trip?

    According to our current data, Spirit Airlines ($152), Delta ($225), and Southwest ($225) offers the cheapest pricing from Louisville to San Juan Luis Munoz Marin Intl Airport. Spirit Airlines is priced at 65% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Louisville to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Louisville to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from Louisville to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Louisville to Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Louisville to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Louisville to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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 San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Luquillo
Humacao

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Top 5 airlines flying from Louisville to Luis Munoz Marin Intl

Discover the top 5 airlines that operate flights from Louisville to Luis Munoz Marin Intl. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$152Average$298FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$225Average$459FlexibilityNo cancel feeOn-time63%
DeltaCheapest$225Average$390FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$263Average$463FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$275Average$559FlexibilityNo cancel feeOn-time69%

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