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$130+ Cheap flights from San Diego to Louisville (SAN - SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SDF
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Louisville Intl are usually found in August or June, booked 11 days in advance, depart on a Saturday or Friday and return on a Wednesday

Cheap flight deals from San Diego to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$235
(Kiwi.com)

One-way from

$130
(Kiwi.com)

Popular in

October

Cheapest in

August

Average price

$412
From San Diego to Louisville Intl
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One-way flight from San Diego to Louisville Intl
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Diego to Louisville

Cheapest flights from San Diego to Louisville
Explore the most affordable flight options available from San Diego to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:00 amSAN - SDF
1 stop27h 02mMultiple Airlines
Mon 10/272:57 pmSDF - SAN
1 stop11h 07mMultiple Airlines
Deal found 9/13$241
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:25 amSAN - SDF
1 stop28h 37mMultiple Airlines
Fri 10/242:57 pmSDF - SAN
1 stop11h 07mMultiple Airlines
Deal found 9/13$246
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:15 amSAN - SDF
2 stops12h 19mAmerican Airlines
Thu 1/16:27 amSDF - SAN
1 stop10h 46mAmerican Airlines
Deal found 9/14$271
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:15 amSAN - SDF
1 stop30h 05mMultiple Airlines
Mon 10/62:57 pmSDF - SAN
1 stop11h 20mMultiple Airlines
Deal found 9/14$278
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:59 pmSAN - SDF
1 stop21h 13mMultiple Airlines
Sun 11/165:20 pmSDF - SAN
1 stop22h 15mMultiple Airlines
Deal found 9/12$296
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/124:06 pmSAN - SDF
1 stop18h 56mMultiple Airlines
Sun 10/196:58 pmSDF - SAN
2 stops53h 22mMultiple Airlines
Deal found 9/14$331
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:14 pmSAN - SDF
1 stop6h 49mAmerican Airlines
Mon 10/276:17 pmSDF - SAN
1 stop8h 23mAmerican Airlines
Deal found 9/14$334

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Louisville 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from San Diego to Louisville that are best for you.

Fly from

San Diego

Fly to

Louisville

Route

Depart

Return

Price

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 10/16

6:25 am-2:02 pm

1 stop28h 37m

Louisville Intl

Fri 10/24

2:57 pm-11:04 pm

1 stop11h 07m

$246

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Sun 9/28

6:15 am-3:20 pm

1 stop30h 05m

Louisville Intl

Mon 10/6

2:57 pm-11:17 pm

1 stop11h 20m

$278

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 11/13

3:59 pm-4:12 pm

1 stop21h 13m

Louisville Intl

Sun 11/16

5:20 pm-12:35 pm

1 stop22h 15m

$296

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 10/22

1:14 pm-11:03 pm

1 stop6h 49m

Louisville Intl

Mon 10/27

6:17 pm-11:40 pm

1 stop8h 23m

$334

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Mon 9/29

6:15 am-3:20 pm

1 stop6h 05m

Louisville Intl

Fri 10/3

8:23 am-7:29 am

2 stops26h 06m

$336

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 10/22

12:30 pm-11:35 pm

2 stops8h 05m

Louisville Intl

Mon 10/27

6:15 am-12:55 pm

2 stops9h 40m

$344

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Mon 10/13

10:53 am-11:03 pm

1 stop9h 10m

Louisville Intl

Mon 10/20

6:17 pm-11:40 pm

1 stop8h 23m

$351

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 11/13

12:43 pm-10:30 pm

1 stop6h 47m

Louisville Intl

Sat 11/15

7:00 am-1:04 pm

2 stops9h 04m

$356

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Sat 10/18

10:20 pm-9:50 am

1 stop8h 30m

Louisville Intl

Sun 10/26

6:00 am-9:48 am

1 stop6h 48m

$357

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Mon 10/13

9:03 pm-5:55 pm

2 stops41h 52m

Louisville Intl

Mon 10/20

2:57 pm-11:04 pm

1 stop11h 07m

$361

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 19 results
1
2

Best time to book a flight from San Diego to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from San Diego with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Louisville

How far ahead should I book a flight from San Diego to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Louisville. Price data was last updated on September 12, 2025.

Booking 11 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Diego to Louisville. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Diego to Louisville?

Currently, January is the cheapest month in which you can book a flight from San Diego to Louisville (average of $299). Flying from San Diego to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAN to SDF?

Find hourly flight availability from San Diego to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

It’s typically best to fly out from San Diego to Louisville in the evening. Doing so could potentially save you 30% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from San Diego to Louisville?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Louisville. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Diego to Louisville flight should consider departing on Thursday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated September 15, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from San Diego to Louisville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,015 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from San Diego to Louisville round-trip?

    According to our current data, Spirit Airlines ($91), American Airlines ($259), and Delta ($317) offers the cheapest pricing from San Diego to Louisville. You may be able to fly from San Diego to Louisville for 80% less than the average price by searching for these airlines.

  • Can I find deals for flights from San Diego to Louisville that include hotel bookings?

    Yes. In addition to deals on San Diego to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Louisville.

  • Can I find deals for business class flights from San Diego to Louisville?

    Yes. Cheapflights offers flight deals from San Diego to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Louisville?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Louisville (average of $299). Flying from San Diego to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Top 5 airlines flying from San Diego to Louisville

Discover the top 5 airlines that operate flights from San Diego to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$91Average$226FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$259Average$433FlexibilityNo cancel feeOn-time71%
DeltaCheapest$317Average$388FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$341Average$541FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$349Average$566FlexibilityNo cancel feeOn-time69%

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