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Cheap flights from Louisville to San Juan from $115

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 1/11. 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
0 bags

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Find the cheapest flights from Louisville to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:35 am - 1:06 pmSDF-SJU
6h 31m1 stop
Delta Logo
3:55 pm - 11:50 pmSJU-SDF
8h 55m1 stop
$225Delta
Find Deal
Sun, Jan 25 - Thu, Jan 29
Spirit Airlines Logo
11:55 am - 12:45 amSDF-SJU
11h 50m1 stop
Spirit Airlines Logo
6:28 pm - 11:59 pmSJU-SDF
6h 31m1 stop
$231Spirit Airlines
Find Deal
Fri, Dec 12 - Sun, Dec 21
Spirit Airlines Logo
11:55 am - 12:45 amSDF-SJU
11h 50m1 stop
Spirit Airlines Logo
4:10 am - 11:00 amSJU-SDF
7h 50m1 stop
$233Spirit Airlines
Find Deal
Fri, Dec 5 - Thu, Dec 11
Spirit Airlines Logo
11:55 am - 12:45 amSDF-SJU
11h 50m1 stop
Spirit Airlines Logo
4:10 am - 11:00 amSJU-SDF
7h 50m1 stop
$236Spirit Airlines
Find Deal
Fri, Dec 5 - Thu, Dec 11
Spirit Airlines Logo
11:55 am - 12:45 amSDF-SJU
11h 50m1 stop
Spirit Airlines Logo
4:10 am - 11:00 amSJU-SDF
7h 50m1 stop
$243Spirit Airlines
Find Deal
Fri, Dec 5 - Sun, Dec 7
Multiple Airlines Logo
8:53 pm - 11:52 pmSDF-SJU
25h 59m1 stop
Multiple Airlines Logo
8:57 am - 1:00 pmSJU-SDF
29h 03m1 stop
$257Multiple Airlines
Find Deal
Mon, Jan 5 - Tue, Jan 13
Multiple Airlines Logo
5:05 am - 10:05 pmSDF-SJU
16h 00m1 stop
Multiple Airlines Logo
8:57 am - 1:00 pmSJU-SDF
29h 03m1 stop
$259Multiple Airlines
Find Deal
Wed, Dec 31 - Tue, Jan 13
American Airlines Logo
8:47 am - 10:09 pmSDF-SJU
12h 22m1 stop
American Airlines Logo
2:36 pm - 11:54 pmSJU-SDF
10h 18m1 stop
$265American Airlines
Find Deal
Fri, Dec 5 - Thu, Dec 11
Spirit Airlines Logo
11:55 am - 12:45 amSDF-SJU
11h 50m1 stop
Spirit Airlines Logo
4:10 am - 11:00 amSJU-SDF
7h 50m1 stop
$269Spirit Airlines
Find Deal
Fri, Dec 5 - Sun, Dec 7
Spirit Airlines Logo
5:05 am - 10:05 pmSDF-SJU
16h 00m1 stop
Spirit Airlines Logo
4:40 pm - 2:33 pmSJU-SDF
22h 53m1 stop
$272Spirit Airlines
Find Deal
Wed, Dec 31 - Wed, Jan 14

American Airlines flights from Louisville to San Juan

Our best American Airlines deals on Louisville to San Juan flight tickets
American Airlines
Jan 25
SDF1:15 pmLouisville Intl
9h 41m
2 stops
SJU11:56 pmSan Juan Luis Munoz Marin Intl
Jan 29
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 02m
2 stops
SDF4:02 pmLouisville Intl
$211
Find similar
American Airlines
Jan 26
SDF6:00 amLouisville Intl
6h 08m
1 stop
SJU1:08 pmSan Juan Luis Munoz Marin Intl
Jan 29
SJU6:00 amSan Juan Luis Munoz Marin Intl
12h 33m
2 stops
SDF5:33 pmLouisville Intl
$285
Find similar
American Airlines
Dec 5
SDF6:08 amLouisville Intl
9h 55m
2 stops
SJU5:03 pmSan Juan Luis Munoz Marin Intl
Dec 12
SJU2:36 pmSan Juan Luis Munoz Marin Intl
10h 18m
1 stop
SDF11:54 pmLouisville Intl
$290
Find similar

Spirit Airlines flights from Louisville to San Juan

Our best Spirit Airlines deals on Louisville to San Juan flight tickets
Spirit Airlines
Dec 12
SDF11:55 amLouisville Intl
11h 50m
1 stop
SJU12:45 amSan Juan Luis Munoz Marin Intl
Dec 21
SJU6:28 pmSan Juan Luis Munoz Marin Intl
6h 31m
1 stop
SDF11:59 pmLouisville Intl
$231
Find similar
Spirit Airlines
Dec 5
SDF11:55 amLouisville Intl
11h 50m
1 stop
SJU12:45 amSan Juan Luis Munoz Marin Intl
Dec 11
SJU4:10 amSan Juan Luis Munoz Marin Intl
7h 50m
1 stop
SDF11:00 amLouisville Intl
$233
Find similar
Spirit Airlines
Dec 5
SDF11:55 amLouisville Intl
11h 50m
1 stop
SJU12:45 amSan Juan Luis Munoz Marin Intl
Dec 7
SJU4:10 amSan Juan Luis Munoz Marin Intl
7h 50m
1 stop
SDF11:00 amLouisville Intl
$243
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to San Juan 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 November 20, 2025.
Use the filters below to find and compare flights from Louisville to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 1/25

5:35 am-1:06 pm

1 stop6h 31m

San Juan Luis Munoz Marin Intl

Thu 1/29

3:55 pm-11:50 pm

1 stop8h 55m

$225

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 12/12

11:55 am-12:45 am

1 stop11h 50m

San Juan Luis Munoz Marin Intl

Sun 12/21

6:28 pm-11:59 pm

1 stop6h 31m

$231

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 12/5

11:55 am-12:45 am

1 stop11h 50m

San Juan Luis Munoz Marin Intl

Thu 12/11

4:10 am-11:00 am

1 stop7h 50m

$233

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 12/5

11:55 am-12:45 am

1 stop11h 50m

San Juan Luis Munoz Marin Intl

Thu 12/11

4:10 am-11:00 am

1 stop7h 50m

$236

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 12/5

11:55 am-12:45 am

1 stop11h 50m

San Juan Luis Munoz Marin Intl

Sun 12/7

4:10 am-11:00 am

1 stop7h 50m

$243

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 1/5

8:53 pm-11:52 pm

1 stop25h 59m

San Juan Luis Munoz Marin Intl

Tue 1/13

8:57 am-1:00 pm

1 stop29h 03m

$257

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 12/31

5:05 am-10:05 pm

1 stop16h 00m

San Juan Luis Munoz Marin Intl

Tue 1/13

8:57 am-1:00 pm

1 stop29h 03m

$259

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 12/5

8:47 am-10:09 pm

1 stop12h 22m

San Juan Luis Munoz Marin Intl

Thu 12/11

2:36 pm-11:54 pm

1 stop10h 18m

$265

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 12/5

11:55 am-12:45 am

1 stop11h 50m

San Juan Luis Munoz Marin Intl

Sun 12/7

4:10 am-11:00 am

1 stop7h 50m

$269

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 12/31

5:05 am-10:05 pm

1 stop16h 00m

San Juan Luis Munoz Marin Intl

Wed 1/14

4:40 pm-2:33 pm

1 stop22h 53m

$272

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Louisville to San Juan

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 cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in September, then October is your next best option. Flight prices from Louisville to San Juan during October average around $315.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Louisville to San Juan is on a Tuesday when prices can be found for as low as $372. The most expensive day to fly to San Juan is Friday, with ticket prices averaging around $459.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the evening when flights can be purchased for as low as $339. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $441 on average. Flights to San Juan from Louisville in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Louisville for as low as $367 on momondo.

Cheap Louisville to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to San Juan

Direct flights

None
There are no direct flights from Louisville to San Juan. There are no popular flight routes from Louisville to San Juan.
Search flight deals

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

    San Juan is 1805.8 mi away from Louisville Intl. Typically, this will take 5h 53m by plane in normal conditions.

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

    Prices for flights from Louisville Intl Airport to San Juan are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Louisville Intl Airport to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The travel and health documents you'll need for your trip to San Juan may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Louisville to San Juan

Compare and see reviews for airlines that fly from Louisville to San Juan with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $152Free CancellationRating
6.3
8,159 reviews
Search Spirit Airlines flights
DeltaPriceFrom $223Free CancellationRating
7.9
8,002 reviews
Search Delta flights
SouthwestPriceFrom $225Free CancellationRating
8.0
4,251 reviews
Search Southwest flights
American AirlinesPriceFrom $257Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $275Free CancellationRating
7.4
9,028 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to San Juan for you.

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

Yes. All flights to San Juan from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Louisville to San Juan flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Louisville to San Juan flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport