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Cheap flights from Louisville to San Juan from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to San Juan departing on 11/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:10 pm - 12:05 amSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
6h 55m1 stop Baltimore/Washington
Southwest Logo
5:40 am - 12:20 pmSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
6h 40m1 stop Baltimore/Washington
$232Southwest
Thu, Oct 1 - Sat, Oct 3
American Airlines Logo
7:27 pm - 11:00 amSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
15h 33m2 stops Charlotte Douglas Miami
American Airlines Logo
10:16 am - 12:04 amSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
13h 48m2 stops Miami Charlotte Douglas
$232American Airlines
Thu, Sep 17 - Sun, Sep 20
American Airlines Logo
7:27 pm - 11:00 amSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
15h 33m2 stops Charlotte Douglas Miami
American Airlines Logo
2:22 pm - 10:55 pmSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
8h 33m1 stop Philadelphia
$232American Airlines
Thu, Sep 10 - Wed, Sep 16
Multiple Airlines Logo
7:08 pm - 11:38 pmSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
28h 30m1 stop Fort Lauderdale
Multiple Airlines Logo
6:12 pm - 6:18 pmSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
25h 06m1 stop Fort Lauderdale
$239Multiple Airlines
Mon, Oct 26 - Sun, Nov 1
Multiple Airlines Logo
9:09 pm - 11:58 pmSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
26h 49m1 stop Tampa
Multiple Airlines Logo
7:00 am - 10:35 amSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
27h 35m1 stop Fort Lauderdale
$283Multiple Airlines
Thu, Sep 17 - Thu, Sep 24
Southwest Logo
5:10 pm - 12:05 amSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
6h 55m1 stop Baltimore/Washington
Southwest Logo
5:40 am - 2:55 pmSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
9h 15m2 stops Baltimore/Washington Nashville Intl
$284Southwest
Thu, Oct 1 - Sat, Oct 3
Delta Logo
6:00 am - 11:46 amSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
5h 46m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:59 pm - 11:59 pmSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
6h 00m1 stop Atlanta Hartsfield-Jackson
$336Delta
Tue, Sep 1 - Thu, Sep 10
Delta Logo
1:01 pm - 11:20 pmSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
9h 19m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:35 pm - 12:05 amSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
6h 30m1 stop Atlanta Hartsfield-Jackson
$336Delta
Sun, Dec 6 - Mon, Dec 14
United Airlines Logo
9:45 am - 8:38 pmSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
10h 53m1 stop Houston George Bush Intcntl
United Airlines Logo
1:25 pm - 11:59 pmSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
10h 34m2 stops Newark Chicago O'Hare Intl
$336United Airlines
Wed, Sep 23 - Sat, Sep 26
United Airlines Logo
6:15 am - 1:45 pmSDF  Louisville Intl-SJU San Juan Luis Munoz Marin Intl
7h 30m1 stop Newark
United Airlines Logo
3:56 pm - 11:59 pmSJU  San Juan Luis Munoz Marin Intl-SDF Louisville Intl
8h 03m1 stop Chicago O'Hare Intl
$336United Airlines
Sat, Sep 26 - Thu, Oct 1

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Southwest flights from Louisville to San Juan Luis Munoz Marin Intl Airport

Our best Southwest deals on Louisville to San Juan Luis Munoz Marin Intl Airport flight tickets
Southwest
Sep 22
SDF12:50 pmLouisville Intl
6h 15m
1 stop
SJU7:05 pmSan Juan Luis Munoz Marin Intl
Sep 26
SJU5:05 amSan Juan Luis Munoz Marin Intl
6h 05m
1 stop
SDF11:10 amLouisville Intl
$336
Southwest
Sep 2
SDF12:50 pmLouisville Intl
6h 10m
1 stop
SJU7:00 pmSan Juan Luis Munoz Marin Intl
Sep 9
SJU5:15 amSan Juan Luis Munoz Marin Intl
5h 55m
1 stop
SDF11:10 amLouisville Intl
$350
Southwest
Oct 2
SDF5:10 pmLouisville Intl
6h 55m
1 stop
SJU12:05 amSan Juan Luis Munoz Marin Intl
Oct 9
SJU10:50 pmSan Juan Luis Munoz Marin Intl
9h 55m
1 stop
SDF8:45 amLouisville Intl
$396

United Airlines flights from Louisville to San Juan Luis Munoz Marin Intl Airport

Our best United Airlines deals on Louisville to San Juan Luis Munoz Marin Intl Airport flight tickets
United Airlines
Dec 1
SDF6:30 amLouisville Intl
7h 10m
1 stop
SJU2:40 pmSan Juan Luis Munoz Marin Intl
Dec 5
SJU4:52 pmSan Juan Luis Munoz Marin Intl
8h 03m
1 stop
SDF11:55 pmLouisville Intl
$356
United Airlines
Sep 26
SDF6:15 amLouisville Intl
7h 30m
1 stop
SJU1:45 pmSan Juan Luis Munoz Marin Intl
Sep 27
SJU3:56 pmSan Juan Luis Munoz Marin Intl
8h 03m
1 stop
SDF11:59 pmLouisville Intl
$362
United Airlines
Oct 17
SDF10:13 amLouisville Intl
13h 37m
2 stops
SJU11:50 pmSan Juan Luis Munoz Marin Intl
Oct 24
SJU1:25 pmSan Juan Luis Munoz Marin Intl
10h 34m
2 stops
SDF11:59 pmLouisville Intl
$376

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated August 14, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Thu 10/1

5:10 pm-12:05 am

1 stop6h 55m

San Juan Luis Munoz Marin Intl

Sat 10/3

5:40 am-12:20 pm

1 stop6h 40m

$232

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Thu 9/17

7:27 pm-11:00 am

2 stops15h 33m

San Juan Luis Munoz Marin Intl

Sun 9/20

10:16 am-12:04 am

2 stops13h 48m

$232

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Thu 9/10

7:27 pm-11:00 am

2 stops15h 33m

San Juan Luis Munoz Marin Intl

Wed 9/16

2:22 pm-10:55 pm

1 stop8h 33m

$232

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Mon 10/26

7:08 pm-11:38 pm

1 stop28h 30m

San Juan Luis Munoz Marin Intl

Sun 11/1

6:12 pm-6:18 pm

1 stop25h 06m

$239

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Thu 9/17

9:09 pm-11:58 pm

1 stop26h 49m

San Juan Luis Munoz Marin Intl

Thu 9/24

7:00 am-10:35 am

1 stop27h 35m

$283

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Thu 10/1

5:10 pm-12:05 am

1 stop6h 55m

San Juan Luis Munoz Marin Intl

Sat 10/3

5:40 am-2:55 pm

2 stops9h 15m

$284
Quickest round-trip

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Tue 9/1

6:00 am-11:46 am

1 stop5h 46m

San Juan Luis Munoz Marin Intl

Thu 9/10

5:59 pm-11:59 pm

1 stop6h 00m

$336

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Sun 12/6

1:01 pm-11:20 pm

1 stop9h 19m

San Juan Luis Munoz Marin Intl

Mon 12/14

6:35 pm-12:05 am

1 stop6h 30m

$336

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Wed 9/23

9:45 am-8:38 pm

1 stop10h 53m

San Juan Luis Munoz Marin Intl

Sat 9/26

1:25 pm-11:59 pm

2 stops10h 34m

$336

LouisvilleSan Juan

SDF Louisville Intl - SJU San Juan Luis Munoz Marin Intl

SDFSJU

Louisville Intl

Sat 9/26

6:15 am-1:45 pm

1 stop7h 30m

San Juan Luis Munoz Marin Intl

Thu 10/1

3:56 pm-11:59 pm

1 stop8h 03m

$336

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Louisville to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Louisville and San Juan Luis Munoz Marin Intl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $316 to $511.
The lowest price recently found on this route was $232.

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $367.

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

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $446 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Louisville for as low as $359 on momondo.

How have Louisville to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of August 2026, prices for Louisville to San Juan Luis Munoz Marin Intl Airport flights are approximately 24% more expensive when compared to flights at the same time last year.

When to book flights from Louisville to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to San Juan Luis Munoz Marin Intl Airport (SDF to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to San Juan Luis Munoz Marin Intl Airport

Fastest flight time

6h 34m

Direct flights

None
The fastest flight from Louisville to San Juan Luis Munoz Marin Intl Airport takes 6h 34m
There are no direct flights from Louisville to San Juan Luis Munoz Marin Intl Airport. There are no popular flight routes from Louisville to San Juan Luis Munoz Marin Intl Airport.
Search flight deals

Frequently asked questions about flying from Louisville to San Juan Luis Munoz Marin Intl Airport

  • How far is Louisville Intl to San Juan Luis Munoz Marin Intl by plane?

    San Juan Luis Munoz Marin Intl is 1811.4 mi away from Louisville Intl. A reasonable flight in good conditions will take 6h 34m.

  • When did momondo last update prices for flights from Louisville Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Louisville Intl Airport to San Juan Luis Munoz Marin Intl Airport were last updated today.

  • How many operators does momondo search for flights from Louisville Intl Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Louisville Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The required travel and health documents for your San Juan Luis Munoz Marin Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Louisville to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Louisville to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Louisville to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $205Free CancellationRating
7.8
8,502 reviews
Search Delta flights
American AirlinesPriceFrom $238Free CancellationRating
7.1
11,929 reviews
Search American Airlines flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
10,108 reviews
Search United Airlines flights
SouthwestPriceFrom $265Free CancellationRating
8.0
4,218 reviews
Search Southwest flights

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Rio Grande
Humacao
Caguas
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to San Juan?

Finding the right flight to San Juan from Louisville is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Juan quick and easy, saving you time and money.

Can I find flights from Louisville to San Juan with flexible booking policies on momondo?

All flight searches from Louisville to San Juan on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Louisville to San Juan?

momondo provides multiple filters to help you find the best flight to San Juan from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to San Juan right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Louisville to San Juan flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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