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Cheap flights from Louisville to San Juan from $113

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 3/2. 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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Cheap round-trip flights

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American Airlines Logo
6:00 am - 5:01 pmSDF-SJU
10h 01m1 stop
American Airlines Logo
7:00 am - 6:31 pmSJU-SDF
12h 31m2 stops
$225American Airlines
Find Deal
Sun, Feb 1 - Wed, Feb 4
United Airlines Logo
9:31 am - 9:26 pmSDF-SJU
10h 55m1 stop
United Airlines Logo
2:10 pm - 11:32 pmSJU-SDF
10h 22m1 stop
$250United Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
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
$276Spirit Airlines
Find Deal
Mon, Dec 8 - Thu, Dec 11
Spirit Airlines Logo
1:19 pm - 11:09 pmSDF-SJU
8h 50m1 stop
Spirit Airlines Logo
6:00 am - 12:21 pmSJU-SDF
7h 21m1 stop
$321Spirit Airlines
Find Deal
Fri, Feb 20 - Mon, Feb 23
Multiple Airlines Logo
1:19 pm - 2:50 amSDF-SJU
12h 31m1 stop
Multiple Airlines Logo
3:55 am - 12:21 pmSJU-SDF
9h 26m1 stop
$324Multiple Airlines
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Mon, Feb 23 - Tue, Feb 24
Southwest Logo
1:50 pm - 12:35 amSDF-SJU
9h 45m2 stops
Southwest Logo
6:40 am - 4:50 pmSJU-SDF
11h 10m2 stops
$325Southwest
Find Deal
Mon, Dec 8 - Fri, Dec 12
Multiple Airlines Logo
11:21 am - 11:25 pmSDF-SJU
35h 04m2 stops
Multiple Airlines Logo
7:35 am - 11:59 pmSJU-SDF
17h 24m1 stop
$327Multiple Airlines
Find Deal
Mon, Dec 15 - Sun, Dec 21
Delta Logo
3:34 pm - 11:49 pmSDF-SJU
7h 15m1 stop
Delta Logo
6:15 am - 1:50 pmSJU-SDF
7h 35m1 stop
$345Delta
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Sun, Mar 1 - Tue, Mar 10
Delta Logo
11:15 am - 8:06 pmSDF-SJU
8h 51m1 stop
Delta Logo
6:15 am - 12:36 pmSJU-SDF
6h 21m1 stop
$353Delta
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Thu, Apr 30 - Sun, May 3
Southwest Logo
5:45 pm - 12:35 amSDF-SJU
5h 50m1 stop
Southwest Logo
5:30 am - 5:55 pmSJU-SDF
12h 25m1 stop
$355Southwest
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Wed, Mar 4 - Sun, Mar 8

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 9
SDF9:31 amLouisville Intl
10h 55m
1 stop
SJU9:26 pmSan Juan Luis Munoz Marin Intl
Dec 16
SJU2:10 pmSan Juan Luis Munoz Marin Intl
10h 22m
1 stop
SDF11:32 pmLouisville Intl
$250
Find similar
United Airlines
Mar 3
SDF2:35 pmLouisville Intl
6h 47m
1 stop
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Mar 5
SJU2:05 amSan Juan Luis Munoz Marin Intl
12h 03m
2 stops
SDF1:08 pmLouisville Intl
$308
Find similar
United Airlines
Mar 3
SDF2:35 pmLouisville Intl
6h 47m
1 stop
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Mar 4
SJU8:10 amSan Juan Luis Munoz Marin Intl
7h 37m
1 stop
SDF2:47 pmLouisville Intl
$310
Find similar

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

Our best Delta deals on Louisville to San Juan Luis Munoz Marin Intl Airport flight tickets
Delta
Mar 1
SDF3:34 pmLouisville Intl
7h 15m
1 stop
SJU11:49 pmSan Juan Luis Munoz Marin Intl
Mar 10
SJU6:15 amSan Juan Luis Munoz Marin Intl
7h 35m
1 stop
SDF1:50 pmLouisville Intl
$345
Find similar
Delta
Apr 30
SDF11:15 amLouisville Intl
8h 51m
1 stop
SJU8:06 pmSan Juan Luis Munoz Marin Intl
May 3
SJU6:15 amSan Juan Luis Munoz Marin Intl
6h 21m
1 stop
SDF12:36 pmLouisville Intl
$353
Find similar
Delta
Nov 14
SDF7:05 amLouisville Intl
6h 12m
1 stop
SJU2:17 pmSan Juan Luis Munoz Marin Intl
Nov 19
SJU6:36 pmSan Juan Luis Munoz Marin Intl
6h 30m
1 stop
SDF12:06 amLouisville Intl
$393
Find similar

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 November 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

Fly to

Route

Depart

Return

Price

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 2/1

6:00 am-5:01 pm

1 stop10h 01m

San Juan Luis Munoz Marin Intl

Wed 2/4

7:00 am-6:31 pm

2 stops12h 31m

$225

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 12/9

9:31 am-9:26 pm

1 stop10h 55m

San Juan Luis Munoz Marin Intl

Tue 12/16

2:10 pm-11:32 pm

1 stop10h 22m

$250

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 12/8

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

$276

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 2/20

1:19 pm-11:09 pm

1 stop8h 50m

San Juan Luis Munoz Marin Intl

Mon 2/23

6:00 am-12:21 pm

1 stop7h 21m

$321

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 2/23

1:19 pm-2:50 am

1 stop12h 31m

San Juan Luis Munoz Marin Intl

Tue 2/24

3:55 am-12:21 pm

1 stop9h 26m

$324

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 12/8

1:50 pm-12:35 am

2 stops9h 45m

San Juan Luis Munoz Marin Intl

Fri 12/12

6:40 am-4:50 pm

2 stops11h 10m

$325

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 12/15

11:21 am-11:25 pm

2 stops35h 04m

San Juan Luis Munoz Marin Intl

Sun 12/21

7:35 am-11:59 pm

1 stop17h 24m

$327

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 3/1

3:34 pm-11:49 pm

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Tue 3/10

6:15 am-1:50 pm

1 stop7h 35m

$345

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 4/30

11:15 am-8:06 pm

1 stop8h 51m

San Juan Luis Munoz Marin Intl

Sun 5/3

6:15 am-12:36 pm

1 stop6h 21m

$353

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 3/4

5:45 pm-12:35 am

1 stop5h 50m

San Juan Luis Munoz Marin Intl

Sun 3/8

5:30 am-5:55 pm

1 stop12h 25m

$355

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

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 September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $315.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Louisville is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $372. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Louisville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $459.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the evening when flights can be purchased for as low as $339. Flights in the afternoon are often more expensive with an average ticket price of $441.

How far in advance should I book a flight 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 $433 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 $367 on momondo.

Can stopping save me money on Louisville to San Juan Luis Munoz Marin Intl Airport flights?

You could potentially save up to 9% on your flight if you consider stops on a Louisville to San Juan Luis Munoz Marin Intl Airport flight.

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

As of November 2025, prices for Louisville to San Juan Luis Munoz Marin Intl Airport flights are approximately 16% cheaper 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

Direct flights

None
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

  • 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 5h 50m.

  • 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
Spirit AirlinesPriceFrom $152Free CancellationRating
6.3
8,137 reviews
Search Spirit Airlines flights
DeltaPriceFrom $223Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $225Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
American AirlinesPriceFrom $257Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
United AirlinesPriceFrom $275Free CancellationRating
7.4
9,013 reviews
Search United Airlines 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
Caguas
Humacao
Rio Grande
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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