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Cheap flights from Louisville to San Juan from $121

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 4/11. 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
1 adult, Economy, 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
7:05 am - 4:23 pm
SDF
-
SJU
9h 18m
1 stop
Delta Logo
6:15 am - 4:49 pm
SJU
-
SDF
10h 34m
1 stop
$266Delta
Sun, Apr 26 - Sat, May 2
Southwest Logo
4:25 pm - 11:15 pm
SDF
-
SJU
6h 50m
1 stop
Southwest Logo
4:25 pm - 11:45 pm
SJU
-
SDF
7h 20m
1 stop
$269Southwest
Sat, May 9 - Thu, May 14
American Airlines Logo
6:01 am - 9:24 pm
SDF
-
SJU
15h 23m
1 stop
American Airlines Logo
1:25 pm - 10:31 pm
SJU
-
SDF
9h 06m
1 stop
$282American Airlines
Thu, Apr 9 - Thu, Apr 16
United Airlines Logo
2:30 pm - 9:24 pm
SDF
-
SJU
6h 54m
1 stop
United Airlines Logo
1:00 am - 1:22 pm
SJU
-
SDF
12h 22m
2 stops
$283United Airlines
Sat, May 2 - Sat, May 9
Southwest Logo
4:25 pm - 11:15 pm
SDF
-
SJU
6h 50m
1 stop
Southwest Logo
5:05 am - 3:00 pm
SJU
-
SDF
9h 55m
2 stops
$307Southwest
Sat, May 9 - Thu, May 14
Multiple Airlines Logo
7:48 pm - 7:50 pm
SDF
-
SJU
24h 02m
2 stops
Multiple Airlines Logo
6:00 am - 5:04 pm
SJU
-
SDF
11h 04m
1 stop
$313Multiple Airlines
Mon, Apr 13 - Fri, Apr 17
United Airlines Logo
10:00 am - 8:34 pm
SDF
-
SJU
10h 34m
1 stop
United Airlines Logo
7:40 am - 4:41 pm
SJU
-
SDF
9h 01m
1 stop
$314United Airlines
Tue, Apr 14 - Tue, Apr 21
Delta Logo
6:00 am - 4:38 pm
SDF
-
SJU
10h 38m
1 stop
Delta Logo
6:15 am - 1:49 pm
SJU
-
SDF
7h 34m
1 stop
$316Delta
Sun, Jun 14 - Tue, Jun 23
American Airlines Logo
2:59 pm - 8:51 pm
SDF
-
SJU
5h 52m
1 stop
American Airlines Logo
6:00 am - 10:31 pm
SJU
-
SDF
16h 31m
1 stop
$322American Airlines
Thu, Apr 30 - Mon, May 4
Multiple Airlines Logo
12:09 pm - 11:49 am
SDF
-
SJU
23h 40m
2 stops
Multiple Airlines Logo
6:00 am - 6:58 pm
SJU
-
SDF
12h 58m
1 stop
$324Multiple Airlines
Mon, Apr 13 - Fri, Apr 17

United Airlines flights from Louisville to San Juan

Our best United Airlines deals on Louisville to San Juan flight tickets
United Airlines
May 2
SDF2:30 pmLouisville Intl
6h 54m
1 stop
SJU9:24 pmSan Juan Luis Munoz Marin Intl
May 9
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 22m
2 stops
SDF1:22 pmLouisville Intl
$283
United Airlines
Apr 14
SDF10:00 amLouisville Intl
10h 34m
1 stop
SJU8:34 pmSan Juan Luis Munoz Marin Intl
Apr 21
SJU7:40 amSan Juan Luis Munoz Marin Intl
9h 01m
1 stop
SDF4:41 pmLouisville Intl
$314
United Airlines
Apr 13
SDF6:00 amLouisville Intl
7h 45m
1 stop
SJU1:45 pmSan Juan Luis Munoz Marin Intl
Apr 16
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 17m
2 stops
SDF1:17 pmLouisville Intl
$333

American Airlines flights from Louisville to San Juan

Our best American Airlines deals on Louisville to San Juan flight tickets
American Airlines
Apr 9
SDF6:01 amLouisville Intl
15h 23m
1 stop
SJU9:24 pmSan Juan Luis Munoz Marin Intl
Apr 16
SJU7:25 amSan Juan Luis Munoz Marin Intl
14h 43m
1 stop
SDF10:08 pmLouisville Intl
$282
American Airlines
Aug 10
SDF5:57 pmLouisville Intl
17h 12m
1 stop
SJU11:09 amSan Juan Luis Munoz Marin Intl
Nov 21
SJU6:25 amSan Juan Luis Munoz Marin Intl
16h 14m
1 stop
SDF9:39 pmLouisville Intl
$296
American Airlines
Apr 30
SDF5:25 pmLouisville Intl
15h 48m
1 stop
SJU9:13 amSan Juan Luis Munoz Marin Intl
May 2
SJU6:45 amSan Juan Luis Munoz Marin Intl
10h 02m
1 stop
SDF4:47 pmLouisville Intl
$322

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 March 17, 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 4/26

7:05 am-4:23 pm

1 stop9h 18m

San Juan Luis Munoz Marin Intl

Sat 5/2

6:15 am-4:49 pm

1 stop10h 34m

$266
Quickest round-trip

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 5/9

4:25 pm-11:15 pm

1 stop6h 50m

San Juan Luis Munoz Marin Intl

Thu 5/14

4:25 pm-11:45 pm

1 stop7h 20m

$269

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 4/9

6:01 am-9:24 pm

1 stop15h 23m

San Juan Luis Munoz Marin Intl

Thu 4/16

1:25 pm-10:31 pm

1 stop9h 06m

$282

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 5/2

2:30 pm-9:24 pm

1 stop6h 54m

San Juan Luis Munoz Marin Intl

Sat 5/9

1:00 am-1:22 pm

2 stops12h 22m

$283

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sat 5/9

4:25 pm-11:15 pm

1 stop6h 50m

San Juan Luis Munoz Marin Intl

Thu 5/14

5:05 am-3:00 pm

2 stops9h 55m

$307

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 4/13

7:48 pm-7:50 pm

2 stops24h 02m

San Juan Luis Munoz Marin Intl

Fri 4/17

6:00 am-5:04 pm

1 stop11h 04m

$313

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Tue 4/14

10:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Tue 4/21

7:40 am-4:41 pm

1 stop9h 01m

$314

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Sun 6/14

6:00 am-4:38 pm

1 stop10h 38m

San Juan Luis Munoz Marin Intl

Tue 6/23

6:15 am-1:49 pm

1 stop7h 34m

$316

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Thu 4/30

2:59 pm-8:51 pm

1 stop5h 52m

San Juan Luis Munoz Marin Intl

Mon 5/4

6:00 am-10:31 pm

1 stop16h 31m

$322

LouisvilleSan Juan

SDF - SJU

SDFSJU

Louisville Intl

Mon 4/13

12:09 pm-11:49 am

2 stops23h 40m

San Juan Luis Munoz Marin Intl

Fri 4/17

6:00 am-6:58 pm

1 stop12h 58m

$324

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 October, then September is your next best option. Flight prices from Louisville to San Juan during September average around $345.

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 $418 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 $365 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 40m

Direct flights

None
The fastest flight from Louisville to San Juan takes 5h 40m
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 40m 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 $205Free CancellationRating
7.9
8,288 reviews
Search Delta flights
Spirit AirlinesPriceFrom $209Free CancellationRating
6.3
8,520 reviews
Search Spirit Airlines flights
SouthwestPriceFrom $225Free CancellationRating
8.0
4,320 reviews
Search Southwest flights
American AirlinesPriceFrom $246Free CancellationRating
7.1
11,468 reviews
Search American Airlines flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
9,431 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