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$90+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SDF
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Louisville Intl are usually found in June or August, 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 August 13, 2025.

Round-trip from

$185
(Priceline)

One-way from

$90
(Mytrip)

Popular in

March

Cheapest in

June

Average price

$389
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. 8% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 13, 2025.

This Priceline deal was found by Cheapflights users on 8/12. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:15 amSAN - SDF
1 stop6h 05mSpirit Airlines
Mon 9/294:20 pmSDF - SAN
1 stop9h 06mSpirit Airlines
Deal found 8/12$185
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:15 amSAN - SDF
1 stop6h 05mSpirit Airlines
Sun 10/54:20 pmSDF - SAN
1 stop18h 09mSpirit Airlines
Deal found 8/12$198
This FlightHub deal was found by Cheapflights users on 8/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:15 amSAN - SDF
1 stop6h 05mSpirit Airlines
Mon 9/154:20 pmSDF - SAN
1 stop9h 06mSpirit Airlines
Deal found 8/10$203
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/187:47 pmSAN - SDF
1 stop16h 33mSpirit Airlines
Sun 9/214:20 pmSDF - SAN
1 stop18h 09mSpirit Airlines
Deal found 8/11$208
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 10/237:47 pmSAN - SDF
1 stop15h 19mMultiple Airlines
Sun 10/263:01 pmSDF - SAN
1 stop24h 16mMultiple Airlines
Deal found 8/11$214
This American Airlines deal was found by Cheapflights users on 8/11. 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 9/312:38 pmSAN - SDF
1 stop8h 02mAmerican Airlines
Tue 9/97:00 amSDF - SAN
1 stop8h 27mAmerican Airlines
Deal found 8/11$219
This FlightHub deal was found by Cheapflights users on 8/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:15 amSAN - SDF
1 stop6h 05mSpirit Airlines
Fri 10/173:01 pmSDF - SAN
1 stop19h 23mSpirit Airlines
Deal found 8/11$226
This Mytrip deal was found by Cheapflights users on 8/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:47 pmSAN - SDF
1 stop16h 33mSpirit Airlines
Wed 10/110:14 amSDF - SAN
2 stops24h 15mSpirit Airlines
Deal found 8/12$227
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:30 amSAN - SDF
1 stop9h 10mAmerican Airlines
Sat 10/46:44 pmSDF - SAN
1 stop6h 52mAmerican Airlines
Deal found 8/12$234
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 10/236:15 amSAN - SDF
2 stops13h 32mSpirit Airlines
Sun 10/263:01 pmSDF - SAN
1 stop11h 16mSpirit Airlines
Deal found 8/12$237

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 August 13, 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 9/25

6:15 am-3:20 pm

1 stop6h 05m

Louisville Intl

Mon 9/29

4:20 pm-10:26 pm

1 stop9h 06m

$185

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 10/2

6:15 am-3:20 pm

1 stop6h 05m

Louisville Intl

Sun 10/5

4:20 pm-7:29 am

1 stop18h 09m

$198

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Mon 9/8

6:15 am-3:20 pm

1 stop6h 05m

Louisville Intl

Mon 9/15

4:20 pm-10:26 pm

1 stop9h 06m

$203

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 10/23

7:47 pm-2:06 pm

1 stop15h 19m

Louisville Intl

Sun 10/26

3:01 pm-11:17 pm

1 stop11h 16m

$208

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 10/23

7:47 pm-2:06 pm

1 stop15h 19m

Louisville Intl

Sun 10/26

3:01 pm-12:17 pm

1 stop24h 16m

$214

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 9/24

12:38 pm-11:40 pm

1 stop8h 02m

Louisville Intl

Wed 10/1

12:25 pm-6:03 pm

1 stop8h 38m

$219

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 9/3

12:38 pm-11:40 pm

1 stop8h 02m

Louisville Intl

Tue 9/9

7:00 am-12:27 pm

1 stop8h 27m

$219

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 9/18

7:47 pm-3:20 pm

1 stop16h 33m

Louisville Intl

Sun 9/21

6:34 pm-6:42 pm

2 stops27h 08m

$222

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Mon 10/6

6:15 am-3:20 pm

1 stop6h 05m

Louisville Intl

Fri 10/17

3:01 pm-7:24 am

1 stop19h 23m

$226

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 9/10

7:47 pm-3:20 pm

1 stop16h 33m

$90

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 18 results
1
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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 August 8, 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 August 13, 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 August 13, 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
4,246 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
7,979 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
8,920 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
4,246 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
8,048 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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 is the cheapest airline to fly from San Diego to Louisville round-trip?

    According to our current data, Spirit Airlines ($185), offers the cheapest pricing from San Diego to Louisville. You may be able to fly from San Diego to Louisville for 59% less than the average price by searching for this airline.

  • 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 August 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$91Average$338FlexibilityNo cancel feeOn-time65%
DeltaCheapest$255Average$384FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$259Average$442FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$346Average$532FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$391Average$566FlexibilityNo cancel feeOn-time69%

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