SJU - SDF

$128 Find Cheap Flights from San Juan to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Juan to Louisville departing on 3/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Louisville, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$226
Overall average: $365
Delta
Thu 4/16Wed 4/22
SJU - SDF • 1 stop
Cheapest one-way
$128
Typical prices: $115-$226
Delta
Thu 3/26
SJU - SDF • 1 stop
Top airlines
Delta
Cheapest • from $226 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Juan and Louisville. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Philadelphia (PHL)
Cheapest • Avg $250 (round-trip)
Orlando (MCO)
Shortest trip • 6h 26m (one-way)
Insights
Insights
Insights
Insights
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 35% price drop
January
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Juan to Louisville (SJU-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Juan to Louisville

Thu, Apr 16 - Wed, Apr 22
Delta Logo
5:34 pm - 11:59 pm
SJU
-
SDF
6h 25m
1 stop
Delta Logo
6:00 am - 1:25 pm
SDF
-
SJU
7h 25m
1 stop
$226Delta
Thu, Apr 16 - Wed, Apr 22
American Airlines Logo
11:43 am - 10:08 pm
SJU
-
SDF
10h 25m
2 stops
American Airlines Logo
6:06 am - 2:52 pm
SDF
-
SJU
8h 46m
1 stop
$293American Airlines
Thu, Mar 12 - Tue, Mar 17
Delta Logo
1:00 pm - 11:57 pm
SJU
-
SDF
10h 57m
1 stop
Delta Logo
5:35 pm - 11:15 pm
SDF
-
SJU
5h 40m
1 stop
$296Delta
Tue, Apr 14 - Thu, Apr 23
American Airlines Logo
1:31 pm - 11:48 pm
SJU
-
SDF
10h 17m
2 stops
American Airlines Logo
7:33 am - 8:51 pm
SDF
-
SJU
13h 18m
1 stop
$356American Airlines
Tue, Mar 17 - Mon, Mar 23
Multiple Airlines Logo
1:45 am - 11:14 am
SJU
-
SDF
9h 29m
1 stop
Multiple Airlines Logo
9:13 pm - 7:50 pm
SDF
-
SJU
22h 37m
2 stops
$357Multiple Airlines
Thu, Mar 12 - Tue, Mar 17
Spirit Airlines Logo
7:54 pm - 11:14 am
SJU
-
SDF
15h 20m
2 stops
Spirit Airlines Logo
12:42 pm - 6:55 pm
SDF
-
SJU
6h 13m
1 stop
$384Spirit Airlines
Thu, Mar 12 - Tue, Mar 17
Spirit Airlines Logo
7:54 pm - 11:14 am
SJU
-
SDF
15h 20m
2 stops
Spirit Airlines Logo
12:42 pm - 11:58 pm
SDF
-
SJU
35h 16m
3 stops
$386Spirit Airlines
Wed, Jul 1 - Mon, Jul 6
American Airlines Logo
12:59 am - 1:57 pm
SJU
-
SDF
12h 58m
1 stop
American Airlines Logo
2:27 pm - 10:51 pm
SDF
-
SJU
8h 24m
1 stop
$396American Airlines
Thu, Mar 12 - Tue, Mar 17
Spirit Airlines Logo
7:54 pm - 11:14 am
SJU
-
SDF
15h 20m
2 stops
Spirit Airlines Logo
12:42 pm - 8:53 am
SDF
-
SJU
20h 11m
2 stops
$407Spirit Airlines
Wed, Mar 25 - Sun, Mar 29
Spirit Airlines Logo
7:54 pm - 2:33 pm
SJU
-
SDF
18h 39m
1 stop
Spirit Airlines Logo
3:33 pm - 6:55 pm
SDF
-
SJU
27h 22m
1 stop
$409Spirit Airlines
Booking Insights

KAYAK's insights & trends for San Juan to Louisville flights

Get data-powered insights and trends into flights from San Juan to Louisville to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Juan Luis Munoz Marin Intl Airport to Louisville is October, where tickets cost $241 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $475 and $471 respectively.

How far in advance should I book a flight from San Juan Luis Munoz Marin Intl Airport to Louisville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Juan Luis Munoz Marin Intl Airport to Louisville, you should book around 5 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$128
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from San Juan to Louisville

When to book flights from San Juan to Louisville

Are your dates flexible? Find out the best times to travel from San Juan to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Juan to Louisville flights

  • What is the cheapest flight from San Juan Luis Munoz Marin Intl Airport to Louisville?

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Louisville was $128 for a one-way ticket and $226 for a round-trip.

  • Do I need a passport to fly between San Juan and Louisville?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Juan and on arrival in Louisville.

  • Which airports will I be using when flying from San Juan to Louisville?

    San Juan and Louisville are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at Louisville Intl.

  • Which aircraft models fly most regularly from San Juan to Louisville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Juan to Louisville?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between San Juan and Louisville, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from San Juan to Louisville, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from San Juan to Louisville are Southwest and Delta. With an average price for the route of $398 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $375 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from San Juan to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Juan to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Juan to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from San Juan is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Juan to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to San Juan with another airline. Booking your flights between San Juan and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Juan to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from San Juan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from San Juan to Louisville

 
See real verified KAYAK customer reviews for airlines flying from San Juan to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Juan to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4299 reviews
8.1Boarding
7.5Entertainment
7.0Food
8.6Crew
8.0Comfort
Airline reviews

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

2.0 MediocreAnonymous, Feb 2026
BWI - PBI
Read more Southwest reviews

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Great plane, great attendants,great flight crew,on time. Wonderful flight home..

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

two hour delay and the Delta representative on the PA system was unable to understand

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Given I (and I’m assuming most people) have both carry in and a personal item included in their fare, I find it very unfair that on neither of my flights I was able to use the overhead for my small backpack because they were completely rammed with luggage, people personal items, jackets, hats and other items. So the only item I brought in had to be stuffed under my seat while they had their leg room and sat comfortable with all of their items in the overhead. This has to stop because I was uncomfortable on both flights when I only had one smaller item that could not be checked due to its contents (medication etc). Plenty of people could have checked theirs but chose not to and then took up the space allotment for 2 people.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

I couldn’t make my first flight due to weather delays trapping us in the town we were in. Then I had to buy a new ticket

Flight attendants had a little attitude. Food tastes no good.

Chargers didn’t work, no entertainment and we had to wait for taxiing for easily 40 minutes after arriving early. Bags were late too!

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Arrived early picked up my bag in a few minutes- great trip - thank you

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

There was a delay with the plan which cause the flight to leave later and once arrived in Chicago there was another delay and some passengers missed their connecting flights

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Worst experience ever. Flight could not land in Charlotte for what we were told was a ground stop. Had to be diverted to Raleigh to refuel. Strangely during ground stop, our connecting flight had no issue taking off on time causing us to miss our flight. We were told there were no other flights that day to our final destination and that two days out was the next one. The only flights to get us there were from Chicago the next morning. Completely opposite direction but it was a direct flight. So we get flown to Chicago and have to find a hotel in our own dime. The flight in the morning was also delayed. Thankfully only a short time. The non too of all this, our luggage did not arrive by the time we were there. Communication was terrible, through the entire trip. Complete incompetence. Will never fly American again.

I am an AA flyer for a very long time... AA has yet to disappoint.

Flight was delayed. Not much information on when the flight would take off. Eventually we were told it was maintenance. App was not giving updates.

We were delayed and due to lateness we were traveling from 11pm we were rerouted to FLL and couldnt deplane but stayed on the plane with no extra Service given (extra good options etc$ there Were so many things that could go wrong and did. This was not an enjoyable experience at all thoroughly exhausting

Everything you need to know for your flight from San Juan to Louisville

Information on your arrival and departure airports