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Luis Munoz Marin Intl

$103+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SJU
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 12 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 July 29, 2025.

Round-trip from

$205
(American Airlines)

One-way from

$103
(Delta)

Popular in

March

Cheapest in

October

Average price

$452
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. 5% potential increase in price ($27 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 July 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 July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. 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 10/282:35 pmSJU - SDF
1 stop10h 00mAmerican Airlines
Deal found 7/27$205
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/68:30 amSDF - SJU
1 stop26h 34mSpirit Airlines
Fri 9/1211:59 amSJU - SDF
1 stop10h 29mSpirit Airlines
Deal found 7/29$226
This Southwest deal was found by Cheapflights users on 7/27. 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 9/264:20 pmSDF - SJU
1 stop7h 10mSouthwest
Mon 9/295:50 amSJU - SDF
1 stop6h 40mSouthwest
Deal found 7/27$245
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:20 amSDF - SJU
1 stop7h 24mUnited Airlines
Fri 9/121:05 amSJU - SDF
2 stops12h 12mUnited Airlines
Deal found 7/29$288
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:00 amSDF - SJU
1 stop10h 36mDelta
Thu 9/185:41 pmSJU - SDF
1 stop6h 11mDelta
Deal found 7/28$300

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 July 29, 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

Mon 10/13

3:35 pm-11:59 pm

1 stop8h 24m

San Juan Luis Munoz Marin Intl

Tue 10/28

2:35 pm-12:35 am

1 stop10h 00m

$205

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 9/6

8:30 am-11:04 am

1 stop26h 34m

San Juan Luis Munoz Marin Intl

Fri 9/12

11:59 am-10:28 pm

1 stop10h 29m

$226

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 9/26

4:20 pm-11:30 pm

1 stop7h 10m

San Juan Luis Munoz Marin Intl

Mon 9/29

5:50 am-12:30 pm

1 stop6h 40m

$245

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 9/7

7:20 am-2:44 pm

1 stop7h 24m

San Juan Luis Munoz Marin Intl

Fri 9/12

1:05 am-1:17 pm

2 stops12h 12m

$288

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 9/7

3:10 pm-2:11 pm

3 stops23h 01m

San Juan Luis Munoz Marin Intl

Thu 9/11

3:19 pm-8:57 am

2 stops17h 38m

$298

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 9/7

6:00 am-4:36 pm

1 stop10h 36m

San Juan Luis Munoz Marin Intl

Thu 9/18

5:41 pm-11:52 pm

1 stop6h 11m

$300

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 8/26

8:10 am-4:36 pm

1 stop8h 26m

$103

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 1/17

3:17 pm-12:36 am

1 stop8h 19m

$122

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 8/25

10:50 am-10:49 pm

1 stop11h 59m

$133

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 10/6

8:30 am-2:11 pm

2 stops29h 41m

$150

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 25, 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 12 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 July 29, 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.

What’s the top layover airport for flights from Louisville to San Juan Luis Munoz Marin Intl Airport?

Share of 1-stop round-trip flights from Louisville to San Juan Luis Munoz Marin Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Houston (IAH) – chosen by Cheapflights users on 50% of 1-stop itineraries from Louisville to San Juan Luis Munoz Marin Intl Airport on Cheapflights.

What’s the cheapest layover airport for flights from Louisville to San Juan Luis Munoz Marin Intl Airport?

Average round-trip fare for 1-stop flights from Louisville to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Baltimore (BWI) is the most affordable 1-stop option, with an average round-trip price of $345.

What’s the fastest layover option from Louisville to San Juan Luis Munoz Marin Intl Airport?

Shortest average travel time for 1-stop one-way flights from Louisville to San Juan Luis Munoz Marin Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Baltimore (BWI) have the shortest average one-way travel time for 1-stop routes: 5h 30m.

Which airport typically offers the quickest layover for flights from Louisville to San Juan Luis Munoz Marin Intl Airport?

Average layover duration for 1-stop one-way flights from Louisville to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Baltimore (BWI) offer the fastest connection on this route, with an average layover time of 1h 15m.

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 July 29, 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
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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
7,979 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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
8,044 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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 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.

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

    According to our current data, American Airlines ($205), Spirit Airlines ($226), and Southwest ($245) offers the cheapest pricing from Louisville to San Juan Luis Munoz Marin Intl Airport. American Airlines is priced at 53% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Louisville to San Juan Luis Munoz Marin Intl Airport one-way?

    The cheapest airlines for a one-way flight from Louisville to San Juan Luis Munoz Marin Intl Airport are Delta ($103), United Airlines ($122), and American Airlines ($133).

  • 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$152Average$294FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$225Average$492FlexibilityNo cancel feeOn-time63%
DeltaCheapest$225Average$401FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$275Average$559FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$276Average$472FlexibilityNo cancel feeOn-time71%

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