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$108+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 44 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 July 3, 2025.

Round-trip from

$162
(Orbitz)

One-way from

$108
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$458
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. 5% potential increase in price ($24 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 July 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 July 3, 2025.

This Orbitz deal was found by Cheapflights users on 7/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:05 pmSDF - SAN
1 stop12h 16mSpirit Airlines
Mon 9/156:15 amSAN - SDF
1 stop11h 55mSpirit Airlines
Deal found 7/2$162
This Mytrip deal was found by Cheapflights users on 7/2. 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 7/239:46 amSDF - SAN
3 stops27h 09mMultiple Airlines
Tue 7/293:57 pmSAN - SDF
2 stops20h 39mMultiple Airlines
Deal found 7/2$253
This American Airlines deal was found by Cheapflights users on 7/2. 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 10/226:45 amSDF - SAN
1 stop10h 25mAmerican Airlines
Mon 10/278:32 amSAN - SDF
1 stop8h 49mAmerican Airlines
Deal found 7/2$285
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 8/183:25 pmSDF - SAN
1 stop8h 47mUnited Airlines
Thu 8/2112:52 pmSAN - SDF
1 stop6h 38mUnited Airlines
Deal found 7/1$307

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 July 3, 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

Thu 9/11

10:05 pm-7:21 am

1 stop12h 16m

San Diego

Mon 9/15

6:15 am-9:10 pm

1 stop11h 55m

$162

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Wed 7/23

9:46 am-9:55 am

3 stops27h 09m

San Diego

Tue 7/29

3:57 pm-3:36 pm

2 stops20h 39m

$253

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Wed 8/27

6:44 am-2:07 pm

1 stop10h 23m

San Diego

Sun 8/31

6:15 am-4:21 pm

1 stop7h 06m

$305

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Mon 8/18

3:25 pm-9:12 pm

1 stop8h 47m

San Diego

Thu 8/21

12:52 pm-10:30 pm

1 stop6h 38m

$307

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Sun 8/24

9:13 pm-5:56 pm

2 stops23h 43m

$108

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Mon 8/25

10:24 am-11:37 pm

2 stops16h 13m

$142

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Mon 8/25

2:18 pm-6:14 pm

1 stop6h 56m

$154

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Mon 8/25

12:55 pm-7:50 pm

2 stops9h 55m

$159

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Mon 8/25

7:00 am-11:40 am

1 stop7h 40m

$199

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Fri 8/8

3:21 pm-9:15 pm

1 stop8h 54m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 June 27, 2025.

Booking 28 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 July 3, 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 July 3, 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
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Spirit Airlines
6.3
Okay
8,086 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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.

  • 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 $162. Another airline that can offer you cheap pricing is American Airlines. Users have found that Spirit Airlines is 64% 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 Spirit Airlines. According to our data, you can fly for as low as $108. Users have also found prices from $154 and $159 on American Airlines 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 $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 Louisville?

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

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$169Average$232FlexibilityNo cancel feeOn-time65%
DeltaCheapest$281Average$446FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$314Average$432FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$362Average$473FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$379Average$519FlexibilityNo cancel feeOn-time63%

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