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Cheap flights from Louisville to San Juan from $163

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 7/18. 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
6:00 am - 1:42 pm
SDF
-
SJU
7h 42m
1 stop
Delta Logo
5:49 pm - 12:09 am
SJU
-
SDF
6h 20m
1 stop
$316Delta
Sun, Aug 23 - Sat, Aug 29
Southwest Logo
4:05 pm - 12:30 am
SDF
-
SJU
8h 25m
2 stops
Southwest Logo
6:00 am - 3:30 pm
SJU
-
SDF
9h 30m
2 stops
$321Southwest
Sun, Aug 30 - Thu, Sep 3
American Airlines Logo
7:27 pm - 11:00 am
SDF
-
SJU
15h 33m
2 stops
American Airlines Logo
6:27 am - 10:56 pm
SJU
-
SDF
16h 29m
2 stops
$326American Airlines
Fri, Sep 25 - Wed, Sep 30
American Airlines Logo
6:05 am - 4:03 pm
SDF
-
SJU
9h 58m
2 stops
American Airlines Logo
2:22 pm - 10:55 pm
SJU
-
SDF
8h 33m
1 stop
$341American Airlines
Tue, Sep 8 - Wed, Sep 23
American Airlines Logo
11:10 am - 9:55 pm
SDF
-
SJU
10h 45m
2 stops
American Airlines Logo
6:27 am - 10:56 pm
SJU
-
SDF
16h 29m
2 stops
$346American Airlines
Tue, Sep 8 - Wed, Sep 23
United Airlines Logo
1:48 pm - 9:24 pm
SDF
-
SJU
7h 36m
1 stop
United Airlines Logo
2:05 am - 11:54 am
SJU
-
SDF
9h 49m
1 stop
$347United Airlines
Fri, Jul 31 - Sun, Aug 2
Delta Logo
1:02 pm - 10:30 pm
SDF
-
SJU
9h 28m
1 stop
Delta Logo
5:49 pm - 12:24 am
SJU
-
SDF
6h 35m
1 stop
$353Delta
Wed, Jul 29 - Wed, Aug 5
United Airlines Logo
5:15 am - 2:44 pm
SDF
-
SJU
9h 29m
1 stop
United Airlines Logo
1:00 am - 1:11 pm
SJU
-
SDF
12h 11m
2 stops
$354United Airlines
Thu, Sep 3 - Fri, Sep 4
Southwest Logo
6:30 am - 7:00 pm
SDF
-
SJU
12h 30m
1 stop
Southwest Logo
5:30 am - 5:10 pm
SJU
-
SDF
11h 40m
1 stop
$358Southwest
Sat, Oct 3 - Sat, Oct 10
Delta Logo
6:00 am - 11:48 am
SDF
-
SJU
5h 48m
1 stop
Delta Logo
5:41 pm - 11:59 pm
SJU
-
SDF
6h 18m
1 stop
$366Delta
Fri, Sep 18 - Sat, Sep 26

American Airlines flights from Louisville to San Juan

Our best American Airlines deals on Louisville to San Juan flight tickets
American Airlines
Sep 25
SDF7:27 pmLouisville Intl
15h 33m
2 stops
SJU11:00 amSan Juan Luis Munoz Marin Intl
Sep 30
SJU6:27 amSan Juan Luis Munoz Marin Intl
16h 29m
2 stops
SDF10:56 pmLouisville Intl
$326
American Airlines
Sep 8
SDF6:28 amLouisville Intl
16h 47m
1 stop
SJU11:15 pmSan Juan Luis Munoz Marin Intl
Sep 23
SJU2:22 pmSan Juan Luis Munoz Marin Intl
8h 33m
1 stop
SDF10:55 pmLouisville Intl
$341
American Airlines
Sep 8
SDF11:10 amLouisville Intl
10h 45m
2 stops
SJU9:55 pmSan Juan Luis Munoz Marin Intl
Sep 23
SJU6:27 amSan Juan Luis Munoz Marin Intl
16h 29m
2 stops
SDF10:56 pmLouisville Intl
$346

Delta flights from Louisville to San Juan

Our best Delta deals on Louisville to San Juan flight tickets
Delta
Jul 29
SDF1:02 pmLouisville Intl
9h 28m
1 stop
SJU10:30 pmSan Juan Luis Munoz Marin Intl
Aug 5
SJU5:49 pmSan Juan Luis Munoz Marin Intl
6h 35m
1 stop
SDF12:24 amLouisville Intl
$353
Delta
Sep 18
SDF8:10 amLouisville Intl
8h 21m
1 stop
SJU4:31 pmSan Juan Luis Munoz Marin Intl
Sep 26
SJU5:41 pmSan Juan Luis Munoz Marin Intl
6h 18m
1 stop
SDF11:59 pmLouisville Intl
$366
Delta
Jul 31
SDF1:02 pmLouisville Intl
7h 43m
1 stop
SJU8:45 pmSan Juan Luis Munoz Marin Intl
Aug 4
SJU2:59 pmSan Juan Luis Munoz Marin Intl
6h 34m
1 stop
SDF9:33 pmLouisville Intl
$426

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 June 2, 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

Sun 8/23

6:00 am-1:42 pm

1 stop7h 42m

San Juan Luis Munoz Marin Intl

Sat 8/29

5:49 pm-12:09 am

1 stop6h 20m

$316

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 8/30

4:05 pm-12:30 am

2 stops8h 25m

San Juan Luis Munoz Marin Intl

Thu 9/3

6:00 am-3:30 pm

2 stops9h 30m

$321

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 9/25

7:27 pm-11:00 am

2 stops15h 33m

San Juan Luis Munoz Marin Intl

Wed 9/30

6:27 am-10:56 pm

2 stops16h 29m

$326

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 9/8

6:05 am-4:03 pm

2 stops9h 58m

San Juan Luis Munoz Marin Intl

Wed 9/23

2:22 pm-10:55 pm

1 stop8h 33m

$341

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 9/8

11:10 am-9:55 pm

2 stops10h 45m

San Juan Luis Munoz Marin Intl

Wed 9/23

6:27 am-10:56 pm

2 stops16h 29m

$346

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 7/31

1:48 pm-9:24 pm

1 stop7h 36m

San Juan Luis Munoz Marin Intl

Sun 8/2

2:05 am-11:54 am

1 stop9h 49m

$347

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Wed 7/29

1:02 pm-10:30 pm

1 stop9h 28m

San Juan Luis Munoz Marin Intl

Wed 8/5

5:49 pm-12:24 am

1 stop6h 35m

$353

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 9/3

5:15 am-2:44 pm

1 stop9h 29m

San Juan Luis Munoz Marin Intl

Fri 9/4

1:00 am-1:11 pm

2 stops12h 11m

$354

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 10/3

6:30 am-7:00 pm

1 stop12h 30m

San Juan Luis Munoz Marin Intl

Sat 10/10

5:30 am-5:10 pm

1 stop11h 40m

$358
Quickest round-trip

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Fri 9/18

6:00 am-11:48 am

1 stop5h 48m

San Juan Luis Munoz Marin Intl

Sat 9/26

5:41 pm-11:59 pm

1 stop6h 18m

$366

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 $428 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 45m

Direct flights

None
The fastest flight from Louisville to San Juan takes 5h 45m
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 45m 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
DeltaPriceFrom $198Free CancellationRating
7.9
8,398 reviews
Search Delta flights
SouthwestPriceFrom $225Free CancellationRating
8.0
4,258 reviews
Search Southwest flights
American AirlinesPriceFrom $226Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
9,778 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.

An easier way to manage your San Juan trip

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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