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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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
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 March 23, 2026.

This Expedia deal was found by Cheapflights users on 3/21. 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 5/158:40 pm
CVG
-
SAN
1 stop27h 32m
Multiple Airlines
Tue 5/1912:24 pm
SAN
-
CVG
Nonstop4h 31m
Multiple Airlines
Deal found 3/21$256
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Sat 5/235:15 am
LEX
-
SAN
1 stop7h 13m
United Airlines
Sat 5/3010:40 pm
SAN
-
LEX
1 stop7h 36m
United Airlines
Deal found 3/19$257
This Booking.com deal was found by Cheapflights users on 3/22. 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 5/199:52 am
CVG
-
SAN
Nonstop4h 47m
Breeze Airways
Tue 5/2612:24 pm
SAN
-
CVG
Nonstop4h 31m
Breeze Airways
Deal found 3/22$258
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Sat 4/254:27 pm
LEX
-
SAN
1 stop7h 16m
American Airlines
Sat 5/21:03 pm
SAN
-
LEX
1 stop7h 35m
American Airlines
Deal found 3/20$259
This CheapOair deal was found by Cheapflights users on 3/21. 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 8/611:59 am
BNA
-
SAN
1 stop13h 54m
Frontier
Mon 8/106:25 am
SAN
-
BNA
1 stop26h 39m
Frontier
Deal found 3/21$260
This Expedia deal was found by Cheapflights users on 3/22. 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 3/278:29 pm
CVG
-
SAN
1 stop19h 44m
Frontier
Thu 4/29:02 pm
SAN
-
CVG
1 stop6h 01m
Frontier
Deal found 3/22$260
This CheapOair deal was found by Cheapflights users on 3/20. 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 5/118:20 pm
BNA
-
SAN
1 stop29h 30m
Frontier
Tue 5/266:25 am
SAN
-
BNA
1 stop9h 57m
Frontier
Deal found 3/20$261
This CheapOair deal was found by Cheapflights users on 3/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:40 pm
CVG
-
SAN
1 stop27h 18m
Frontier
Mon 9/79:53 pm
SAN
-
CVG
1 stop18h 42m
Frontier
Deal found 3/23$261
This American Airlines deal was found by Cheapflights users on 3/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:00 am
LEX
-
SAN
1 stop10h 18m
American Airlines
Wed 5/271:21 pm
SAN
-
LEX
1 stop7h 40m
American Airlines
Deal found 3/23$262
This CheapOair deal was found by Cheapflights users on 3/22. 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 4/1011:51 am
CVG
-
SAN
1 stop15h 11m
Frontier
Fri 4/177:00 am
SAN
-
CVG
1 stop9h 23m
Frontier
Deal found 3/22$262
This American Airlines deal was found by Cheapflights users on 3/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:09 pm
TYS
-
SAN
1 stop8h 51m
American Airlines
Sat 5/212:17 pm
SAN
-
TYS
1 stop8h 39m
American Airlines
Deal found 3/23$265
This CheapOair deal was found by Cheapflights users on 3/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:14 pm
BNA
-
SAN
1 stop10h 51m
Frontier
Sun 4/129:28 pm
SAN
-
BNA
1 stop15h 01m
Frontier
Deal found 3/23$266

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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$256
(Expedia)

One-way from

$70
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$520
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. 5% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 23, 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 5/23

5:15 am-9:28 am

1 stop7h 13m

San Diego

Sat 5/30

10:55 am-11:59 pm

2 stops10h 04m

$262

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Thu 5/14

3:05 pm-10:00 pm

1 stop9h 55m

San Diego

Sat 5/16

10:15 pm-10:21 am

1 stop9h 06m

$277

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Tue 4/21

7:05 am-10:45 am

1 stop6h 40m

San Diego

Tue 4/28

6:20 am-5:05 pm

1 stop7h 45m

$312

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Wed 4/29

6:30 am-2:38 pm

1 stop11h 08m

San Diego

Tue 5/12

7:15 am-7:18 pm

1 stop9h 03m

$325

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Wed 5/13

8:25 am-12:10 pm

1 stop6h 45m

San Diego

Mon 5/18

10:40 pm-9:50 am

1 stop8h 10m

$327

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Wed 8/12

7:30 am-2:08 pm

1 stop9h 38m

San Diego

Tue 8/18

1:30 pm-10:56 pm

1 stop6h 26m

$337

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Tue 4/21

3:50 pm-10:25 pm

1 stop9h 35m

San Diego

Sat 4/25

9:45 am-8:45 pm

1 stop8h 00m

$355

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Fri 5/29

7:00 pm-11:25 pm

1 stop6h 25m

San Diego

Sat 6/6

10:40 pm-4:45 am

Nonstop4h 05m

$360

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Thu 5/14

3:05 pm-10:00 pm

1 stop9h 55m

San Diego

Sun 5/17

10:15 pm-10:21 am

1 stop9h 06m

$367

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Thu 5/14

6:45 pm-10:55 pm

1 stop7h 10m

San Diego

Sun 5/17

6:40 am-9:05 pm

1 stop11h 25m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 60 resultsSorted by cheapest first
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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 March is currently the most expensive (average of $321). 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 $262, United Airlines can have you in San Diego from Kentucky in 7h 13m. 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 $124 on American Airlines. Other airlines that offer cheap prices include United Airlines from $138 and Delta 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 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 March is currently the most expensive (average of $321). 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

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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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$112Average$342FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$216Average$403FlexibilityNo cancel feeOn-time71%
DeltaCheapest$230Average$384FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$252Average$420FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$336Average$463FlexibilityNo cancel feeOn-time63%

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