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Cheap flights from Louisville to San Juan from $158

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 8/9. 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.
United Airlines Logo
6:00 am - 12:54 pm
SDF
-
SJU
6h 54m
1 stop
United Airlines Logo
1:00 am - 1:00 pm
SJU
-
SDF
12h 00m
2 stops
$316United Airlines
Fri, Sep 18 - Fri, Sep 25
American Airlines Logo
8:16 am - 11:59 pm
SDF
-
SJU
15h 43m
1 stop
American Airlines Logo
1:38 pm - 11:17 pm
SJU
-
SDF
9h 39m
2 stops
$321American Airlines
Wed, Aug 12 - Wed, Aug 19
American Airlines Logo
4:54 pm - 11:41 pm
SDF
-
SJU
6h 47m
1 stop
American Airlines Logo
6:00 am - 5:51 pm
SJU
-
SDF
11h 51m
1 stop
$326American Airlines
Sun, Oct 11 - Sat, Oct 17
American Airlines Logo
6:08 pm - 11:10 am
SDF
-
SJU
17h 02m
1 stop
American Airlines Logo
12:05 pm - 10:21 pm
SJU
-
SDF
10h 16m
2 stops
$336American Airlines
Fri, Sep 18 - Sat, Sep 26
Multiple Airlines Logo
10:35 am - 5:52 pm
SDF
-
SJU
7h 17m
1 stop
Multiple Airlines Logo
8:33 am - 9:55 am
SJU
-
SDF
25h 22m
1 stop
$360Multiple Airlines
Fri, Jun 5 - Sun, Jun 7
Multiple Airlines Logo
11:12 am - 12:23 am
SDF
-
SJU
13h 11m
1 stop
Multiple Airlines Logo
6:16 pm - 8:36 am
SJU
-
SDF
38h 20m
2 stops
$362Multiple Airlines
Thu, Aug 20 - Mon, Aug 24
United Airlines Logo
6:00 am - 12:54 pm
SDF
-
SJU
6h 54m
1 stop
United Airlines Logo
2:20 pm - 10:15 pm
SJU
-
SDF
7h 55m
1 stop
$365United Airlines
Thu, Aug 20 - Mon, Aug 24
Delta Logo
10:00 am - 8:45 pm
SDF
-
SJU
10h 45m
1 stop
Delta Logo
5:49 pm - 12:34 am
SJU
-
SDF
6h 45m
1 stop
$366Delta
Sun, Jul 26 - Thu, Aug 6
Multiple Airlines Logo
8:24 pm - 12:41 am
SDF
-
SJU
28h 17m
1 stop
Multiple Airlines Logo
5:15 pm - 2:40 pm
SJU
-
SDF
21h 25m
2 stops
$375Multiple Airlines
Mon, Jul 20 - Wed, Aug 5
Southwest Logo
6:35 pm - 12:25 am
SDF
-
SJU
5h 50m
1 stop
Southwest Logo
10:20 pm - 11:15 am
SJU
-
SDF
12h 55m
1 stop
$376Southwest
Sun, Jul 5 - Fri, Jul 10

American Airlines flights from Louisville to San Juan

Our best American Airlines deals on Louisville to San Juan flight tickets
American Airlines
Aug 12
SDF8:16 amLouisville Intl
15h 43m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Aug 19
SJU1:38 pmSan Juan Luis Munoz Marin Intl
9h 39m
2 stops
SDF11:17 pmLouisville Intl
$321
American Airlines
Oct 11
SDF4:54 pmLouisville Intl
6h 47m
1 stop
SJU11:41 pmSan Juan Luis Munoz Marin Intl
Oct 17
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 51m
1 stop
SDF5:51 pmLouisville Intl
$326
American Airlines
Sep 18
SDF6:08 pmLouisville Intl
17h 02m
1 stop
SJU11:10 amSan Juan Luis Munoz Marin Intl
Sep 26
SJU12:05 pmSan Juan Luis Munoz Marin Intl
10h 16m
2 stops
SDF10:21 pmLouisville Intl
$336

Southwest flights from Louisville to San Juan

Our best Southwest deals on Louisville to San Juan flight tickets
Southwest
Jul 5
SDF6:35 pmLouisville Intl
5h 50m
1 stop
SJU12:25 amSan Juan Luis Munoz Marin Intl
Jul 10
SJU10:20 pmSan Juan Luis Munoz Marin Intl
12h 55m
1 stop
SDF11:15 amLouisville Intl
$376
Southwest
Jul 20
SDF3:00 pmLouisville Intl
9h 30m
1 stop
SJU12:30 amSan Juan Luis Munoz Marin Intl
Jul 30
SJU10:20 pmSan Juan Luis Munoz Marin Intl
11h 50m
1 stop
SDF10:10 amLouisville Intl
$406
Southwest
Jul 18
SDF6:55 pmLouisville Intl
6h 20m
1 stop
SJU1:15 amSan Juan Luis Munoz Marin Intl
Jul 25
SJU6:30 amSan Juan Luis Munoz Marin Intl
11h 40m
1 stop
SDF6:10 pmLouisville Intl
$436

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 May 15, 2026.
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

Cheapest round-trip

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 9/18

6:00 am-12:54 pm

1 stop6h 54m

San Juan Luis Munoz Marin Intl

Fri 9/25

1:00 am-1:00 pm

2 stops12h 00m

$316

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 8/12

8:16 am-11:59 pm

1 stop15h 43m

San Juan Luis Munoz Marin Intl

Wed 8/19

1:38 pm-11:17 pm

2 stops9h 39m

$321

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 10/11

4:54 pm-11:41 pm

1 stop6h 47m

San Juan Luis Munoz Marin Intl

Sat 10/17

6:00 am-5:51 pm

1 stop11h 51m

$326

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 9/18

6:08 pm-11:10 am

1 stop17h 02m

San Juan Luis Munoz Marin Intl

Sat 9/26

12:05 pm-10:21 pm

2 stops10h 16m

$336

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 6/5

10:35 am-5:52 pm

1 stop7h 17m

San Juan Luis Munoz Marin Intl

Sun 6/7

8:33 am-9:55 am

1 stop25h 22m

$360

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 8/20

11:12 am-12:23 am

1 stop13h 11m

San Juan Luis Munoz Marin Intl

Mon 8/24

6:16 pm-8:36 am

2 stops38h 20m

$362
Quickest round-trip

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 8/20

6:00 am-12:54 pm

1 stop6h 54m

San Juan Luis Munoz Marin Intl

Mon 8/24

2:20 pm-10:15 pm

1 stop7h 55m

$365

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 7/26

10:00 am-8:45 pm

1 stop10h 45m

San Juan Luis Munoz Marin Intl

Thu 8/6

5:49 pm-12:34 am

1 stop6h 45m

$366

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 7/20

8:24 pm-12:41 am

1 stop28h 17m

San Juan Luis Munoz Marin Intl

Wed 8/5

5:15 pm-2:40 pm

2 stops21h 25m

$375

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 7/5

6:35 pm-12:25 am

1 stop5h 50m

San Juan Luis Munoz Marin Intl

Fri 7/10

10:20 pm-11:15 am

1 stop12h 55m

$376

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 typical price of a round-trip flight between Louisville and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in November, then January is your next best option. Flight prices from Louisville to San Juan during January average around $113.

How far in advance should I book a flight from Louisville 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 $425 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 $380 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

Fastest flight time

5h 42m

Direct flights

None
The fastest flight from Louisville to San Juan takes 5h 42m
There are no direct flights from Louisville to San Juan. There are no popular flight routes from Louisville to San Juan.
Search flight deals

Frequently asked questions about flying from Louisville to San Juan

  • 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 42m 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 $176Free CancellationRating
6.2
8,626 reviews
Search Spirit Airlines flights
DeltaPriceFrom $198Free CancellationRating
7.9
8,453 reviews
Search Delta flights
SouthwestPriceFrom $225Free CancellationRating
8.0
4,299 reviews
Search Southwest flights
American AirlinesPriceFrom $238Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
9,717 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