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San Diego

$70+ Cheap flights from Kentucky to San Diego (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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Kentucky to San Diego

Cheapest flights from Kentucky to San Diego
Explore the most affordable flight options available from Kentucky to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:00 am
LEX
-
SAN
1 stop8h 57m
American Airlines
Sat 3/710:35 pm
SAN
-
LEX
1 stop6h 53m
American Airlines
Deal found 2/1$217
This American Airlines deal was found by Cheapflights users on 2/3. 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 5/134:27 pm
LEX
-
SAN
1 stop10h 06m
American Airlines
Wed 5/2710:45 pm
SAN
-
LEX
1 stop9h 41m
American Airlines
Deal found 2/3$222
This Priceline deal was found by Cheapflights users on 2/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:13 pm
TYS
-
SAN
1 stop6h 55m
Frontier
Mon 3/96:25 am
SAN
-
TYS
1 stop6h 00m
Frontier
Deal found 2/2$225
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:42 pm
CVG
-
SAN
1 stop18h 44m
Frontier
Sat 3/73:16 pm
SAN
-
CVG
1 stop6h 20m
Frontier
Deal found 2/2$226
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/71:14 pm
CVG
-
SAN
2 stops13h 54m
Frontier
Fri 3/137:00 am
SAN
-
CVG
1 stop8h 00m
Frontier
Deal found 2/2$227
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
CVG
-
SAN
1 stop20h 08m
Frontier
Tue 3/106:25 am
SAN
-
CVG
2 stops15h 12m
Frontier
Deal found 2/2$230
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:42 pm
CVG
-
SAN
1 stop17h 13m
Frontier
Wed 3/116:25 am
SAN
-
CVG
2 stops15h 12m
Frontier
Deal found 2/2$232
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:07 pm
CVG
-
SAN
2 stops22h 43m
Frontier
Mon 2/236:25 am
SAN
-
CVG
1 stop14h 17m
Frontier
Deal found 2/2$233
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:45 am
CVG
-
SAN
1 stop10h 40m
Frontier
Sun 4/269:07 pm
SAN
-
CVG
2 stops19h 16m
Frontier
Deal found 2/2$234
This Kiwi.com deal was found by Cheapflights users on 1/31. 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.
Sat 4/114:30 pm
CVG
-
SAN
1 stop10h 32m
Frontier
Tue 4/1411:42 am
SAN
-
CVG
2 stops24h 24m
Frontier
Deal found 1/31$235
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:20 pm
CVG
-
SAN
2 stops21h 14m
Frontier
Thu 5/146:55 am
SAN
-
CVG
1 stop9h 28m
Frontier
Deal found 2/2$236
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1611:58 am
CVG
-
SAN
1 stop15h 10m
Frontier
Mon 3/239:08 pm
SAN
-
CVG
1 stop14h 16m
Frontier
Deal found 2/2$237

Find flight deals from Kentucky to San Diego

Keep the following information in mind while searching for Kentucky to San Diego flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(American Airlines)

One-way from

$70
(Trip.com)

Popular in

June

Cheapest in

August

Average price

$426
Provider with most accurate pricing for Louisville Intl-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-San Diego flights.
Search Deals
From Kentucky to San Diego
Search Deals
One-way flight from Kentucky to San Diego
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kentucky 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 February 3, 2026.
Use the filters below to find and compare flights from Kentucky to San Diego that are best for you.

Fly from

Kentucky

Fly to

San Diego

Route

Depart

Return

Price

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Mon 3/2

8:13 pm-12:08 am

1 stop6h 55m

San Diego

Mon 3/9

6:25 am-3:25 pm

1 stop6h 00m

$225

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Thu 4/23

4:28 pm-12:01 am

1 stop10h 33m

San Diego

Sun 4/26

6:25 am-3:33 pm

1 stop6h 08m

$245

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Mon 2/16

8:13 pm-9:41 pm

1 stop28h 28m

San Diego

Thu 2/19

11:59 am-7:27 pm

1 stop28h 28m

$246

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Thu 2/19

7:00 am-11:14 am

1 stop7h 14m

San Diego

Sat 2/21

8:00 am-6:26 pm

1 stop7h 26m

$246

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Sun 3/8

5:38 pm-12:16 am

1 stop9h 38m

San Diego

Wed 3/11

3:16 pm-12:37 am

1 stop6h 21m

$250

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Sat 3/14

4:00 pm-10:59 pm

1 stop9h 59m

San Diego

Tue 3/24

10:30 pm-10:37 am

1 stop9h 07m

$257

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Sat 4/18

4:55 pm-9:26 pm

1 stop7h 31m

San Diego

Wed 4/22

9:45 pm-10:11 am

1 stop9h 26m

$257

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Sat 3/21

4:00 pm-10:59 pm

1 stop9h 59m

San Diego

Wed 3/25

1:35 pm-10:44 pm

1 stop6h 09m

$257

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Wed 4/29

7:00 am-11:25 am

1 stop7h 25m

San Diego

Sat 5/2

12:40 pm-1:14 am

2 stops9h 34m

$262

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Wed 5/13

5:52 pm-10:00 pm

1 stop7h 08m

San Diego

Wed 5/27

6:15 am-5:12 pm

1 stop7h 57m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 60 results
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Best time to book a flight from Kentucky to San Diego

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

What is the cheapest month to book a flight from Kentucky to San Diego?

Currently, August is the cheapest month in which you can book a flight from Kentucky to San Diego (average of $100). Flying from Kentucky to San Diego in April is currently the most expensive (average of $296). 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.

Related info for your journey

Find useful and relevant information for your journey from Kentucky 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 airport do you fly into for flights to San Diego from Kentucky?

    San Diego (SAN), located 2.6 mi from the city center, is the airport you fly into when you book flights from Kentucky to San Diego.

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

    For as low as $225, Frontier can have you in San Diego from Kentucky in 6h 55m. The distance from Kentucky to San Diego is about 1897 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $118 on American Airlines. Other airlines that offer cheap prices include Delta from $138 and United Airlines from $138 one-way.

  • What are the most popular routes from Kentucky to San Diego?

    When deciding which route to take from Kentucky to San Diego consider Cincinnati Cinci./N. Kentucky - San Diego, Nashville Intl - San Diego or Knoxville McGhee Tyson - San Diego as they are the most popular.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Kentucky to San Diego (average of $100). Flying from Kentucky to San Diego in April is currently the most expensive (average of $296). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kentucky to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Kentucky to San Diego

Discover the top 5 airlines that operate flights from Kentucky 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$112Average$342FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$216Average$407FlexibilityNo cancel feeOn-time71%
DeltaCheapest$230Average$387FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$260Average$445FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$336Average$470FlexibilityNo cancel feeOn-time63%

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