HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luis Munoz Marin Intl

$109+ 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SJU
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisville to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Louisville Intl to San Juan Luis Munoz Marin Intl are usually found in January or October, 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 junio 12, 2025.

Round-trip from

$220
(Southwest)

One-way from

$109
(CheapOair)

Popular in

March

Cheapest in

January

Average price

$530
From Louisville Intl to San Juan Luis Munoz Marin Intl
Search Deals
One-way flight from Louisville Intl to San Juan Luis Munoz Marin Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($24 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 June 2025
Search Deals

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 junio 12, 2025.

This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/83:30 pmSDF - SJU
1 stop6h 30mSouthwest
dom. 11/96:10 amSJU - SDF
1 stop7h 10mSouthwest
Deal found 6/11$220
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/177:00 amSDF - SJU
1 stop6h 23mDelta
mié. 9/242:28 pmSJU - SDF
1 stop9h 28mDelta
Deal found 6/10$225
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/2112:16 pmSDF - SJU
1 stop8h 53mMultiple Airlines
jue. 7/241:37 amSJU - SDF
1 stop12h 18mMultiple Airlines
Deal found 6/11$264
This United Airlines deal was found by Cheapflights users on 6/10. 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.
sáb. 10/116:15 amSDF - SJU
1 stop7h 30mUnited Airlines
sáb. 10/181:30 pmSJU - SDF
1 stop10h 00mUnited Airlines
Deal found 6/10$273
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/112:50 pmSDF - SJU
1 stop20h 42mSpirit Airlines
mar. 7/153:50 pmSJU - SDF
1 stop27h 18mSpirit Airlines
Deal found 6/11$280
This American Airlines deal was found by Cheapflights users on 6/9. 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.
mar. 6/177:46 amSDF - SJU
1 stop15h 39mAmerican Airlines
mié. 6/256:15 amSJU - SDF
1 stop16h 32mAmerican Airlines
Deal found 6/9$285

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 junio 12, 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

sáb. 11/8

3:30 pm-11:00 pm

1 stop6h 30m

San Juan Luis Munoz Marin Intl

dom. 11/9

6:10 am-12:20 pm

1 stop7h 10m

$220

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

mié. 9/17

7:00 am-1:23 pm

1 stop6h 23m

San Juan Luis Munoz Marin Intl

mié. 9/24

2:28 pm-11:56 pm

1 stop9h 28m

$225

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

lun. 7/21

12:16 pm-9:09 pm

1 stop8h 53m

San Juan Luis Munoz Marin Intl

jue. 7/24

1:37 am-1:55 pm

1 stop12h 18m

$264

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

sáb. 10/11

6:15 am-1:45 pm

1 stop7h 30m

San Juan Luis Munoz Marin Intl

sáb. 10/18

1:30 pm-11:30 pm

1 stop10h 00m

$273

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

vie. 7/11

2:50 pm-11:32 am

1 stop20h 42m

San Juan Luis Munoz Marin Intl

mar. 7/15

3:50 pm-7:08 pm

1 stop27h 18m

$280

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

mié. 9/17

7:31 pm-12:46 pm

2 stops17h 15m

San Juan Luis Munoz Marin Intl

mié. 9/24

1:36 pm-10:59 pm

2 stops9h 23m

$290

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

lun. 6/23

5:03 am-7:19 pm

1 stop14h 16m

$109

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

lun. 8/25

6:00 am-4:36 pm

1 stop10h 36m

$113

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

mar. 8/26

7:44 am-10:49 pm

1 stop15h 05m

$133

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

vie. 6/20

1:10 pm-11:15 pm

1 stop10h 05m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 11 results
1
2

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 June 9, 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 junio 12, 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.

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 junio 12, 2025.
Get a feel of what it's like to fly with Southwest, Delta and United Airlines from Louisville to San Juan by reading reviews from past customers. 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
4,287 reviews

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,946 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Spirit Airlines
6.3
Okay
8,052 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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, Southwest ($220), Delta ($225), and United Airlines ($273) offers the cheapest pricing from Louisville to San Juan Luis Munoz Marin Intl Airport. Southwest is priced at 50% 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 Spirit Airlines ($109), Delta ($113), 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 Louisville?

Book flights to Louisville if you plan to visit one of these locations
Dorado
Fajardo
Luquillo
Rio Grande
Humacao
Bayamón

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$175Average$292FlexibilityNo cancel feeOn-time65%
DeltaCheapest$254Average$390FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$267Average$468FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$275Average$559FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$338Average$551FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.