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San Diego

$108+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAN
Aug 9 — Aug 161
Sun 8/9
Sun 8/16
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 July 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:55 pm
BNA
-
SAN
1 stop12h 56m
Frontier
Tue 9/156:25 am
SAN
-
BNA
1 stop10h 22m
Frontier
Deal found 7/10$223
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/1112:25 pm
BNA
-
SAN
1 stop13h 26m
Frontier
Tue 8/183:45 pm
SAN
-
BNA
1 stop18h 25m
Frontier
Deal found 7/8$224
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/1712:25 pm
BNA
-
SAN
1 stop13h 26m
Frontier
Wed 8/193:45 pm
SAN
-
BNA
1 stop18h 25m
Frontier
Deal found 7/8$226
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/1012:25 pm
BNA
-
SAN
1 stop13h 26m
Frontier
Tue 8/186:25 am
SAN
-
BNA
1 stop27h 45m
Frontier
Deal found 7/8$227
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:55 pm
BNA
-
SAN
1 stop12h 56m
Frontier
Tue 9/83:45 pm
SAN
-
BNA
1 stop25h 02m
Frontier
Deal found 7/10$228
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Wed 9/167:42 pm
BNA
-
SAN
1 stop15h 59m
Frontier
Mon 9/218:32 pm
SAN
-
BNA
1 stop20h 15m
Frontier
Deal found 7/8$232
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 9/147:42 pm
BNA
-
SAN
1 stop21h 59m
Frontier
Thu 9/176:25 am
SAN
-
BNA
1 stop10h 22m
Frontier
Deal found 7/8$236
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 9/102:52 pm
BNA
-
SAN
1 stop7h 56m
Frontier
Tue 9/156:25 am
SAN
-
BNA
1 stop10h 22m
Frontier
Deal found 7/8$237
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 9/157:42 pm
BNA
-
SAN
1 stop21h 59m
Frontier
Thu 9/176:25 am
SAN
-
BNA
1 stop10h 22m
Frontier
Deal found 7/8$238
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 9/1411:32 am
BNA
-
SAN
1 stop14h 27m
Frontier
Wed 9/166:25 am
SAN
-
BNA
1 stop10h 22m
Frontier
Deal found 7/8$239
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 8/612:25 pm
BNA
-
SAN
1 stop13h 26m
Frontier
Wed 8/126:25 am
SAN
-
BNA
1 stop27h 15m
Frontier
Deal found 7/8$243
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Tue 10/69:00 am
LEX
-
SAN
1 stop8h 50m
United Airlines
Sat 10/1010:30 pm
SAN
-
LEX
1 stop7h 58m
United Airlines
Deal found 7/8$257

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 July 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$223
(Kiwi.com)

One-way from

$108
(Kiwi.com)

Popular in

April

Cheapest in

August

Average price

$417
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 ($46 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 July 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 July 10, 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

Tue 10/6

9:00 am-2:50 pm

1 stop8h 50m

San Diego

Sat 10/10

10:30 pm-9:28 am

1 stop7h 58m

$257

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Sat 8/29

1:55 pm-8:10 pm

2 stops9h 15m

San Diego

Sat 9/5

6:20 am-5:40 pm

2 stops8h 20m

$271

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Wed 10/14

6:37 pm-12:31 am

1 stop7h 54m

San Diego

Sat 10/17

2:07 pm-11:14 pm

1 stop7h 07m

$278

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Fri 9/4

5:00 pm-10:10 pm

1 stop7h 10m

San Diego

Mon 9/7

10:40 pm-8:49 am

1 stop8h 09m

$288

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Thu 8/27

3:20 pm-9:55 pm

2 stops9h 35m

San Diego

Mon 8/31

6:35 am-5:20 pm

1 stop7h 45m

$291

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Mon 9/14

5:35 am-9:55 am

1 stop6h 20m

San Diego

Mon 9/14

2:15 pm-10:40 pm

1 stop6h 25m

$299

KnoxvilleSan Diego

TYS - SAN

TYSSAN

Knoxville McGhee Tyson

Sat 8/8

6:00 am-9:26 am

1 stop6h 26m

San Diego

Fri 8/14

11:30 am-9:34 pm

1 stop7h 04m

$304

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Thu 10/29

6:35 am-12:50 pm

2 stops9h 15m

San Diego

Mon 11/2

6:45 am-5:30 pm

2 stops7h 45m

$304

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Wed 9/9

9:15 am-5:26 pm

2 stops11h 11m

San Diego

Sun 9/20

2:15 pm-12:05 am

1 stop6h 50m

$308

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Wed 8/19

9:15 am-5:26 pm

2 stops11h 11m

San Diego

Mon 8/24

12:33 pm-10:38 pm

1 stop7h 05m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

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 June is currently the most expensive (average of $309). 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?

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.

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 $304, United Airlines can have you in San Diego from Kentucky in 6h 26m. 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 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 June is currently the most expensive (average of $309). 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
National City
Chula Vista
Poway
La Mesa
Coronado
Santee
San Ysidro
Julian
Lemon Grove

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Alternative routes for Kentucky to San Diego

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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 July 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$236Average$398FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$260Average$440FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$432FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$332Average$465FlexibilityNo cancel feeOn-time63%

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