San Diego

$164+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
feb. 25 — mar. 41
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Cheap 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 enero 26, 2026.

This American Airlines deal was found by Cheapflights users on 1/26. 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.
sáb. 4/256:00 am
SDF
-
SAN
1 stop11h 17m
American Airlines
mar. 4/2812:18 pm
SAN
-
SDF
1 stop7h 53m
American Airlines
Deal found 1/26$348
This American Airlines deal was found by Cheapflights users on 1/24. 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.
jue. 3/56:00 am
SDF
-
SAN
1 stop7h 00m
American Airlines
lun. 3/910:35 pm
SAN
-
SDF
1 stop9h 57m
American Airlines
Deal found 1/24$358
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/249:00 am
SDF
-
SAN
1 stop6h 57m
United Airlines
sáb. 2/2812:55 pm
SAN
-
SDF
1 stop6h 42m
United Airlines
Deal found 1/25$359
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/235:35 am
SDF
-
SAN
1 stop7h 12m
United Airlines
jue. 2/2611:05 am
SAN
-
SDF
2 stops8h 32m
United Airlines
Deal found 1/25$364
This Southwest deal was found by Cheapflights users on 1/25. 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.
mar. 2/246:00 am
SDF
-
SAN
2 stops9h 25m
Southwest
sáb. 2/2810:30 am
SAN
-
SDF
2 stops8h 05m
Southwest
Deal found 1/25$369
This American Airlines deal was found by Cheapflights users on 1/26. 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.
vie. 3/206:23 pm
SDF
-
SAN
1 stop7h 00m
American Airlines
lun. 3/2310:35 pm
SAN
-
SDF
1 stop9h 40m
American Airlines
Deal found 1/26$397
This Delta deal was found by Cheapflights users on 1/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/65:35 pm
SDF
-
SAN
1 stop8h 34m
Delta
mar. 4/146:25 am
SAN
-
SDF
1 stop6h 36m
Delta
Deal found 1/25$398
This Southwest deal was found by Cheapflights users on 1/26. 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.
jue. 3/266:15 pm
SDF
-
SAN
1 stop7h 55m
Southwest
dom. 3/299:35 pm
SAN
-
SDF
2 stops9h 20m
Southwest
Deal found 1/26$403
This Southwest deal was found by Cheapflights users on 1/25. 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.
lun. 2/2311:40 am
SDF
-
SAN
2 stops9h 35m
Southwest
jue. 2/2611:20 am
SAN
-
SDF
2 stops9h 10m
Southwest
Deal found 1/25$429
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/135:35 pm
SDF
-
SAN
1 stop8h 34m
Delta
dom. 3/1510:30 pm
SAN
-
SDF
1 stop7h 58m
Delta
Deal found 1/26$437
This American Airlines deal was found by Cheapflights users on 1/24. 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.
vie. 2/205:00 am
SDF
-
SAN
1 stop9h 17m
American Airlines
vie. 2/2710:35 pm
SAN
-
SDF
1 stop9h 55m
American Airlines
Deal found 1/24$439
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/187:30 am
SDF
-
SAN
2 stops8h 08m
United Airlines
mié. 11/2510:51 am
SAN
-
SDF
1 stop6h 23m
United Airlines
Deal found 1/25$442

Find 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 enero 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$348
(American Airlines)

One-way from

$164
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$409
Provider with most accurate pricing for Louisville Intl-San Diego flight deals.
Provider most trusted by Cheapflights users for Louisville Intl-San Diego flights.
From Louisville Intl to San Diego
One-way flight from Louisville Intl to San Diego
Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in January 2026

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 enero 26, 2026.
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

mar. 2/24

9:00 am-12:57 pm

1 stop6h 57m

San Diego

sáb. 2/28

12:55 pm-10:37 pm

1 stop6h 42m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

mar. 4/7

6:15 am-11:08 am

1 stop7h 53m

San Diego

jue. 4/16

10:10 pm-10:06 am

1 stop8h 56m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

sáb. 4/11

10:13 am-4:31 pm

1 stop9h 18m

San Diego

mié. 4/15

6:25 am-4:01 pm

1 stop6h 36m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

lun. 2/23

5:54 pm-10:44 pm

1 stop7h 50m

San Diego

jue. 2/26

12:55 pm-10:37 pm

1 stop6h 42m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

mar. 4/7

6:15 am-1:37 pm

1 stop10h 22m

San Diego

lun. 4/13

10:30 pm-10:24 am

1 stop8h 54m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

jue. 4/9

5:35 pm-11:09 pm

1 stop8h 34m

San Diego

mié. 4/15

10:30 pm-8:52 am

1 stop7h 22m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

jue. 4/9

5:35 pm-11:09 pm

1 stop8h 34m

San Diego

mar. 4/14

10:30 pm-10:24 am

1 stop8h 54m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

mié. 4/8

10:50 am-5:51 pm

1 stop10h 01m

San Diego

mar. 4/14

10:30 pm-8:52 am

1 stop7h 22m

$359

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

jue. 4/9

5:35 pm-11:09 pm

1 stop8h 34m

San Diego

dom. 4/12

9:55 pm-8:52 am

1 stop7h 57m

$398

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

sáb. 4/11

5:58 pm-11:09 pm

1 stop8h 11m

San Diego

dom. 4/12

9:55 pm-8:52 am

1 stop7h 57m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 21 results
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Compare providers for flights from Louisville to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to San Diego in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Louisville-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 23, 2026.

Booking 6 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 $100). Flying from Louisville to San Diego in December is currently the most expensive (average of $209). 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.

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 enero 26, 2026.
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.

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

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.

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

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.

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

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.

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

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.

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

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.

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

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 United Airlines and Delta fly from Louisville to San Diego in about 6h 57m. The time it takes to get you to your destination can typically vary by up to 56m. The distance between Louisville and San Diego is about 1800 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $112. Other airlines that can offer you cheap pricing are Delta, from $239, and United Airlines, from $260. Users have found that Spirit Airlines is 74% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Louisville to San Diego one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $118. Users have also found prices from $138 and $159 on Delta and Southwest, respectively.

  • 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 $100). Flying from Louisville to San Diego in December is currently the most expensive (average of $209). 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Alternative routes for Louisville to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

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 enero 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$112Average$342FlexibilityNo cancel feeOn-time65%
DeltaCheapest$239Average$446FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$260Average$461FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$292Average$427FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$336Average$474FlexibilityNo cancel feeOn-time63%

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