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San Diego

$105+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
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 May 13, 2026.

This Expedia deal was found by Cheapflights users on 5/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/229:00 pm
CVG
-
SAN
1 stop25h 31m
Frontier
Sun 7/268:29 pm
SAN
-
CVG
1 stop20h 19m
Frontier
Deal found 5/12$230
This Frontier deal was found by Cheapflights users on 5/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:32 pm
TYS
-
SAN
1 stop15h 10m
Frontier
Tue 6/91:28 pm
SAN
-
TYS
1 stop27h 09m
Frontier
Deal found 5/10$231
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 6/79:54 pm
LEX
-
SAN
1 stop13h 53m
Multiple Airlines
Thu 6/119:43 am
SAN
-
LEX
1 stop8h 24m
Multiple Airlines
Deal found 5/9$232
This Expedia deal was found by Cheapflights users on 5/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/309:52 am
CVG
-
SAN
Nonstop4h 47m
Multiple Airlines
Sat 9/59:37 am
SAN
-
CVG
1 stop6h 54m
Multiple Airlines
Deal found 5/11$237
This Expedia deal was found by Cheapflights users on 5/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:00 pm
CVG
-
SAN
1 stop26h 58m
Multiple Airlines
Tue 7/1412:24 pm
SAN
-
CVG
Nonstop4h 31m
Multiple Airlines
Deal found 5/12$238
This Gotogate deal was found by Cheapflights users on 5/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/249:52 am
CVG
-
SAN
Nonstop4h 47m
Breeze Airways
Tue 6/212:24 pm
SAN
-
CVG
Nonstop4h 31m
Breeze Airways
Deal found 5/12$239
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 8/239:52 am
CVG
-
SAN
Nonstop4h 47m
Multiple Airlines
Tue 8/259:53 pm
SAN
-
CVG
2 stops34h 21m
Multiple Airlines
Deal found 5/11$240
This Frontier deal was found by Cheapflights users on 5/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:32 pm
TYS
-
SAN
1 stop15h 10m
Frontier
Wed 6/106:25 am
SAN
-
TYS
1 stop10h 12m
Frontier
Deal found 5/12$241
This Booking.com deal was found by Cheapflights users on 5/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:52 am
CVG
-
SAN
Nonstop4h 47m
Breeze Airways
Thu 8/2012:24 pm
SAN
-
CVG
Nonstop4h 31m
Breeze Airways
Deal found 5/9$243
This Expedia deal was found by Cheapflights users on 5/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:00 pm
CVG
-
SAN
1 stop25h 31m
Frontier
Mon 8/178:29 pm
SAN
-
CVG
1 stop20h 06m
Frontier
Deal found 5/12$244
This Booking.com deal was found by Cheapflights users on 5/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:40 pm
CVG
-
SAN
1 stop27h 18m
Multiple Airlines
Thu 8/2012:24 pm
SAN
-
CVG
Nonstop4h 31m
Multiple Airlines
Deal found 5/9$246
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 8/119:52 am
CVG
-
SAN
Nonstop4h 47m
Breeze Airways
Thu 8/1312:24 pm
SAN
-
CVG
Nonstop4h 31m
Breeze Airways
Deal found 5/11$248

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 May 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$230
(Expedia)

One-way from

$105
(Frontier)

Popular in

March

Cheapest in

August

Average price

$436
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. 9% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 13, 2026.
Use the filters below to find and compare flights from Kentucky to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Sat 10/31

7:30 am-2:11 pm

1 stop9h 41m

San Diego

Fri 11/6

10:40 pm-9:26 am

1 stop7h 46m

$318

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Wed 7/8

5:30 am-9:04 am

1 stop6h 34m

San Diego

Wed 7/15

7:15 am-5:14 pm

1 stop6h 59m

$318

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Tue 9/1

4:50 pm-8:34 pm

1 stop6h 44m

San Diego

Wed 9/9

10:13 am-9:30 pm

1 stop8h 17m

$337

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Wed 8/12

5:45 am-11:07 am

1 stop8h 22m

San Diego

Tue 8/18

6:15 am-5:19 pm

1 stop8h 04m

$337

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Thu 7/9

6:00 am-10:49 am

1 stop7h 49m

San Diego

Mon 7/13

10:25 pm-9:27 am

1 stop8h 02m

$355

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Sat 6/27

12:38 pm-4:22 pm

1 stop6h 44m

San Diego

Sat 7/4

10:15 pm-9:55 am

1 stop8h 40m

$355

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Sat 8/22

5:57 pm-10:10 pm

1 stop7h 13m

San Diego

Tue 8/25

11:00 am-10:38 pm

1 stop8h 38m

$357

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Fri 10/2

5:55 pm-10:44 pm

1 stop7h 49m

San Diego

Sun 10/4

9:40 pm-9:24 am

1 stop8h 44m

$359

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Fri 8/21

7:00 am-12:33 pm

1 stop8h 33m

San Diego

Sun 8/23

10:17 pm-10:06 am

1 stop8h 49m

$359

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Thu 10/1

3:45 pm-9:19 pm

1 stop8h 34m

San Diego

Sun 10/4

9:40 pm-9:24 am

1 stop8h 44m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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

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

Booking 5 days in advance of your planned departure date is, on average, the best time to get cheap flights from Kentucky 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 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 March is currently the most expensive (average of $289). 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.

How much does it cost to fly round-trip from Kentucky to San Diego?

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 $369, Delta can have you in San Diego from Kentucky in 6h. 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 $124 on American Airlines. Other airlines that offer cheap prices include Delta from $138 and Southwest from $159 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 Nashville Intl - San Diego, Cincinnati Cinci./N. Kentucky - San Diego or Louisville Intl - 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 March is currently the most expensive (average of $289). 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
Poway
La Mesa
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 4 airlines flying from Kentucky to San Diego

Discover the top 4 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 May 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$216Average$398FlexibilityNo cancel feeOn-time71%
DeltaCheapest$239Average$421FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$252Average$423FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$323Average$464FlexibilityNo cancel feeOn-time63%

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