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$64+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:20 pmCVG - SAN
1 stop18h 51mFrontier
Fri 1/92:50 pmSAN - CVG
1 stop6h 04mFrontier
Deal found 12/16$289
This CheapOair deal was found by Cheapflights users on 12/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:10 amCVG - SAN
1 stop16h 05mFrontier
Mon 12/296:25 amSAN - CVG
1 stop27h 48mFrontier
Deal found 12/15$305
This Delta deal was found by Cheapflights users on 12/16. 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.
Sat 12/205:37 pmLEX - SAN
1 stop7h 32mDelta
Tue 1/66:15 amSAN - LEX
1 stop7h 39mDelta
Deal found 12/16$308
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:16 pmCVG - SAN
1 stop7h 43mFrontier
Wed 12/316:25 amSAN - CVG
1 stop27h 48mFrontier
Deal found 12/16$314
This Priceline deal was found by Cheapflights users on 12/16. 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.
Thu 12/254:26 pmTYS - SAN
1 stop10h 33mFrontier
Mon 1/56:25 amSAN - TYS
1 stop6h 26mFrontier
Deal found 12/16$333
This Expedia deal was found by Cheapflights users on 12/16. 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 12/306:10 amCVG - SAN
1 stop16h 05mFrontier
Sat 1/36:25 amSAN - CVG
1 stop16h 43mFrontier
Deal found 12/16$333
This Frontier deal was found by Cheapflights users on 12/16. 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.
Sun 12/213:35 pmBNA - SAN
1 stop8h 30mFrontier
Wed 12/246:25 amSAN - BNA
1 stop9h 42mFrontier
Deal found 12/16$333
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:10 amCVG - SAN
1 stop16h 05mFrontier
Fri 1/24:47 pmSAN - CVG
1 stop17h 08mFrontier
Deal found 12/16$334
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Fri 12/196:49 pmCVG - SAN
1 stop7h 11mFrontier
Mon 12/224:47 pmSAN - CVG
1 stop17h 26mFrontier
Deal found 12/16$338
This Delta deal was found by Cheapflights users on 12/16. 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 12/177:45 amLEX - SAN
1 stop9h 27mDelta
Tue 12/239:45 pmSAN - LEX
1 stop9h 12mDelta
Deal found 12/16$339
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:49 pmCVG - SAN
1 stop7h 11mFrontier
Wed 12/316:25 amSAN - CVG
1 stop27h 48mFrontier
Deal found 12/16$344
This Expedia deal was found by Cheapflights users on 12/16. 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 12/216:10 amCVG - SAN
1 stop16h 05mFrontier
Sat 12/276:25 amSAN - CVG
1 stop27h 48mFrontier
Deal found 12/16$357

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$182
(Travelocity)

One-way from

$64
(Trip.com)

Popular in

March

Cheapest in

August

Average price

$532
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. 8% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 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 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 December 18, 2025.
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

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Wed 3/4

12:30 pm-6:35 pm

1 stop9h 05m

San Diego

Tue 3/10

10:00 pm-10:51 am

1 stop9h 51m

$217

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Tue 3/3

3:10 pm-8:50 pm

1 stop8h 40m

San Diego

Tue 3/10

1:34 pm-11:13 pm

1 stop6h 39m

$217

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Sat 1/3

6:49 pm-10:13 am

2 stops18h 24m

San Diego

Wed 1/7

3:29 pm-1:13 pm

1 stop18h 44m

$226

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Fri 2/13

7:00 am-12:08 am

1 stop20h 08m

San Diego

Sun 2/15

6:25 am-11:42 pm

1 stop14h 17m

$235

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Mon 1/12

7:35 am-12:14 pm

1 stop7h 39m

San Diego

Wed 1/14

1:35 pm-6:39 pm

1 stop26h 04m

$243

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Fri 1/23

7:37 pm-12:08 am

1 stop6h 31m

San Diego

Sun 1/25

6:30 am-6:42 pm

1 stop10h 12m

$252

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Wed 1/21

9:25 am-11:31 pm

2 stops16h 06m

San Diego

Thu 1/22

11:49 am-6:45 pm

1 stop28h 56m

$254

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Tue 1/20

8:00 am-3:29 pm

1 stop10h 29m

San Diego

Fri 1/23

6:15 am-7:49 pm

1 stop10h 34m

$256

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Wed 1/14

6:45 am-12:48 pm

1 stop9h 03m

San Diego

Wed 1/14

7:35 pm-5:13 am

1 stop6h 38m

$257

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Wed 1/14

5:00 pm-9:56 pm

1 stop7h 56m

San Diego

Wed 1/21

11:10 am-10:23 pm

1 stop8h 13m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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 $295). 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 KY to SAN?

Find hourly flight availability from Kentucky 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 December 18, 2025.

One of the essential ways to save on airfare from Kentucky to San Diego is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 22% on airfare.

What is the cheapest day to fly from Kentucky to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Kentucky to San Diego. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Kentucky to San Diego flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 $217, American Airlines can have you in San Diego from Kentucky in 9h 05m. The distance from Kentucky to San Diego is about 1861 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 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 April is currently the most expensive (average of $295). 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
Coronado
National City
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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$216Average$411FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$232Average$342FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$260Average$444FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$397FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$336Average$497FlexibilityNo cancel feeOn-time63%

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