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$106+ Cheap flights from Louisville to San Diego (SDF - SAN)

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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to San Diego are usually found in August or January, booked 76 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap flight deals from Louisville to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to San Diego (SAN). 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 19, 2025.

Round-trip from

$200
(Cheapflightsfares)

One-way from

$106
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$398
From Louisville Intl to San Diego
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One-way flight from Louisville Intl to San Diego
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Highest demand for flights based on searches. 4% potential increase in price ($23 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 Louisville to San Diego

Cheapest flights from Louisville to San Diego
Explore the most affordable flight options available from Louisville to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 8/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/84:20 pmSDF - SAN
1 stop9h 06mSpirit Airlines
Thu 9/116:15 amSAN - SDF
1 stop6h 05mSpirit Airlines
Deal found 8/19$200
This FlightHub deal was found by Cheapflights users on 8/17. 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 10/302:57 pmSDF - SAN
1 stop6h 33mSpirit Airlines
Sun 11/28:21 amSAN - SDF
1 stop26h 41mSpirit Airlines
Deal found 8/17$209
This Spirit Airlines deal was found by Cheapflights users on 8/18. 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 Spirit Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:20 pmSDF - SAN
1 stop10h 14mSpirit Airlines
Sun 10/57:47 pmSAN - SDF
1 stop15h 15mSpirit Airlines
Deal found 8/18$215
This American Airlines deal was found by Cheapflights users on 8/17. 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 10/229:44 amSDF - SAN
1 stop7h 39mAmerican Airlines
Mon 10/279:59 amSAN - SDF
1 stop7h 33mAmerican Airlines
Deal found 8/17$227
This Mytrip deal was found by Cheapflights users on 8/19. 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.
Mon 9/811:17 amSDF - SAN
3 stops34h 25mMultiple Airlines
Thu 9/116:15 amSAN - SDF
1 stop6h 05mMultiple Airlines
Deal found 8/19$228
This Priceline deal was found by Cheapflights users on 8/18. 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 9/114:20 pmSDF - SAN
1 stop10h 14mSpirit Airlines
Thu 9/256:15 amSAN - SDF
1 stop6h 05mSpirit Airlines
Deal found 8/18$230
This American Airlines deal was found by Cheapflights users on 8/18. 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 10/112:25 pmSDF - SAN
1 stop6h 28mAmerican Airlines
Sun 10/510:38 pmSAN - SDF
1 stop7h 45mAmerican Airlines
Deal found 8/18$233
This FlightHub deal was found by Cheapflights users on 8/17. 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.
Sun 9/214:20 pmSDF - SAN
1 stop18h 09mSpirit Airlines
Fri 9/266:15 amSAN - SDF
1 stop6h 05mSpirit Airlines
Deal found 8/17$236
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 10/116:46 pmSDF - SAN
1 stop7h 13mAmerican Airlines
Sat 10/1810:53 amSAN - SDF
1 stop9h 10mAmerican Airlines
Deal found 8/17$237
This Southwest deal was found by Cheapflights users on 8/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:35 pmSDF - SAN
1 stop9h 30mSouthwest
Tue 10/79:35 amSAN - SDF
2 stops10h 10mSouthwest
Deal found 8/18$238
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/83:30 pmSDF - SAN
1 stop9h 45mSouthwest
Thu 11/1311:10 amSAN - SDF
2 stops7h 20mSouthwest
Deal found 8/17$242

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to San Diego 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 19, 2025.
Use the filters below to find and compare flights from Louisville to San Diego that are best for you.

Fly from

Louisville

Fly to

San Diego

Route

Depart

Return

Price

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Mon 9/8

4:20 pm-10:26 pm

1 stop9h 06m

San Diego

Thu 9/11

6:15 am-3:20 pm

1 stop6h 05m

$200

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Thu 10/30

2:57 pm-6:30 pm

1 stop6h 33m

San Diego

Sun 11/2

8:21 am-2:02 pm

1 stop26h 41m

$209

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Thu 10/2

4:20 pm-11:34 pm

1 stop10h 14m

San Diego

Sun 10/5

7:47 pm-2:02 pm

1 stop15h 15m

$215

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Thu 10/2

6:22 pm-11:58 pm

1 stop8h 36m

San Diego

Tue 10/7

7:15 am-5:53 pm

1 stop7h 38m

$227

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Sat 1/24

6:30 am-11:05 am

1 stop7h 35m

San Diego

Tue 1/27

2:20 pm-11:20 pm

1 stop6h 00m

$227

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Wed 10/22

9:44 am-2:23 pm

1 stop7h 39m

San Diego

Mon 10/27

9:59 am-8:32 pm

1 stop7h 33m

$227

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Wed 9/10

6:00 am-10:20 am

1 stop7h 20m

San Diego

Thu 9/18

10:38 pm-9:24 am

1 stop7h 46m

$227

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Fri 10/24

2:57 pm-11:00 pm

1 stop11h 03m

$106

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Tue 10/14

8:18 am-12:29 pm

1 stop7h 11m

$109

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Sun 10/12

2:57 pm-11:17 pm

1 stop11h 20m

$118

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 13 results
1
2

Best time to book a flight from Louisville to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Louisville 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 Louisville to San Diego

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to San Diego. Price data was last updated on August 8, 2025.

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Louisville to San Diego. 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 Louisville to San Diego?

Currently, August is the cheapest month in which you can book a flight from Louisville to San Diego (average of $286). Flying from Louisville to San Diego in March is currently the most expensive (average of $366). 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 SDF to SAN?

Find hourly flight availability from Louisville to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 19, 2025.

It’s optimal to fly from Louisville to San Diego in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight at noon.

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

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

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

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated August 19, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Louisville to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

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

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

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
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

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
8,922 reviews
Southwest
8.0
Very good
4,246 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

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

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

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
8,037 reviews
Southwest
8.0
Very good
4,246 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

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

  • How long is the flight from Louisville to San Diego?

    Airlines like Spirit Airlines fly from Louisville to San Diego in about 9h 06m. The time it takes to get you to your destination can typically vary by up to . The distance between Louisville and San Diego is about 1800 mi.

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

    Cheapflights users have booked flights from Louisville to San Diego round-trip from $189. Other airlines that can offer you cheap pricing are Delta, from $276, and American Airlines, from $323. Users have found that Spirit Airlines is 58% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisville to San Diego 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 Louisville to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Louisville to San Diego (average of $286). Flying from Louisville to San Diego in March is currently the most expensive (average of $366). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
National City
Lemon Grove
Imperial Beach
Alpine

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Top 5 airlines flying from Louisville to San Diego

Discover the top 5 airlines that operate flights from Louisville to San Diego. 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 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$189Average$295FlexibilityNo cancel feeOn-time65%
DeltaCheapest$276Average$445FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$323Average$429FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$366Average$526FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$371Average$516FlexibilityNo cancel feeOn-time63%

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