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$151+ 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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SDF
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Diego to Louisville Intl are usually found in November 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

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 December 26, 2025.

This Delta deal was found by Cheapflights users on 12/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:30 pmSAN - SDF
1 stop7h 59mDelta
Sat 1/36:00 amSDF - SAN
1 stop9h 03mDelta
Deal found 12/24$604
This Southwest deal was found by Cheapflights users on 12/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:50 pmSAN - SDF
1 stop5h 55mSouthwest
Sat 1/35:40 amSDF - SAN
2 stops8h 30mSouthwest
Deal found 12/24$649
This United Airlines deal was found by Cheapflights users on 12/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:42 pmSAN - SDF
1 stop6h 42mUnited Airlines
Sat 1/35:40 amSDF - SAN
2 stops12h 21mUnited Airlines
Deal found 12/24$654
This Alaska Airlines deal was found by Cheapflights users on 12/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:59 pmSAN - SDF
2 stops23h 42mAlaska Airlines
Sat 1/32:00 pmSDF - SAN
2 stops22h 25mAlaska Airlines
Deal found 12/24$917
This United Airlines deal was found by Cheapflights users on 12/23. 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.
Wed 12/2410:25 amSAN - SDF
1 stop8h 29mUnited Airlines
Fri 12/266:00 amSDF - SAN
1 stop8h 05mUnited Airlines
Deal found 12/23$1,067
This Alaska Airlines deal was found by Cheapflights users on 12/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:59 pmSAN - SDF
2 stops14h 07mAlaska Airlines
Fri 12/262:00 pmSDF - SAN
1 stop7h 19mAlaska Airlines
Deal found 12/24$1,072

Find 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 December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$279
(American Airlines)

One-way from

$151
(Delta)

Popular in

October

Cheapest in

November

Average price

$555
Provider with most accurate pricing for San Diego-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Louisville Intl flights.
Search Deals
From San Diego to Louisville Intl
Search Deals
One-way flight from San Diego to Louisville Intl
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 26, 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

Wed 1/21

6:20 am-11:19 pm

1 stop13h 59m

Louisville Intl

Wed 1/28

1:32 pm-10:26 pm

1 stop11h 54m

$279

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 1/21

6:20 am-11:19 pm

1 stop13h 59m

Louisville Intl

Sun 1/25

1:15 pm-8:36 pm

1 stop10h 21m

$298

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 1/14

7:25 am-5:00 pm

1 stop6h 35m

Louisville Intl

Sat 1/17

4:05 pm-10:10 pm

1 stop9h 05m

$311

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Sun 1/25

10:26 am-7:54 pm

1 stop6h 28m

Louisville Intl

Sat 1/31

11:10 am-3:36 pm

1 stop7h 26m

$317

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 1/15

12:11 pm-9:59 pm

1 stop6h 48m

Louisville Intl

Sat 1/17

5:35 am-9:40 am

1 stop7h 05m

$319

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Wed 1/21

9:00 am-11:20 pm

2 stops11h 20m

Louisville Intl

Wed 1/28

6:00 am-12:25 pm

2 stops9h 25m

$390

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Sat 2/14

7:05 am-7:25 pm

1 stop9h 20m

Louisville Intl

Wed 2/18

6:00 am-11:14 am

1 stop8h 14m

$391

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 1/1

12:40 pm-10:58 pm

1 stop7h 18m

$151

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Thu 1/1

6:15 am-6:21 pm

1 stop9h 06m

$151

San DiegoLouisville

SAN - SDF

SANSDF

San Diego

Sun 2/15

6:20 am-5:34 pm

1 stop8h 14m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 13 results
1
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Compare providers for flights from San Diego to Louisville

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 San Diego to Louisville in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 San Diego-Louisville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Louisville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Louisville flights, Cheapflights users trust eDreams the most. eDreams 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 San Diego-Louisville 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 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 December 19, 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, June is the cheapest month in which you can book a flight from San Diego to Louisville (average of $71). Flying from San Diego to Louisville in April is currently the most expensive (average of $270). 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 December 26, 2025.

It’s typically best to fly out from San Diego to Louisville in the evening. Doing so could potentially save you 29% on the flight price compared to flying at noon, which is usually more expensive.

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 December 26, 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
4,258 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,018 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,116 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,068 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Spirit Airlines
6.3
Okay
8,210 reviews
Southwest
8.0
Very good
4,258 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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.

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

    American Airlines, Southwest, and United Airlines can get you from San Diego to Louisville in just under 6h 28m. Your travel time can differ by up to 7h 31m. The distance from San Diego to Louisville is about 1800 mi. This flight may include one or multiple stops.

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

    According to our current data, Spirit Airlines ($91), American Airlines ($246), and Delta ($276) 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.

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

    The cheapest airlines for a one-way flight from San Diego to Louisville are Southwest ($104), Delta ($143), and American Airlines ($153).

  • 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, June is the cheapest month in which you can book a flight from San Diego to Louisville (average of $71). Flying from San Diego to Louisville in April is currently the most expensive (average of $270). 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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$91Average$219FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$246Average$433FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$377FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$280Average$519FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$298Average$533FlexibilityNo cancel feeOn-time63%

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