What is the cheapest airline that flies from Kentucky to San Diego?

Frontier and Spirit Airlines are the most popular carriers operating from Kentucky to San Diego

What airlines fly to San Diego?

American Airlines, Southwest and Delta are the top three most popular airlines that fly to San Diego from Kentucky according to our data. American Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 5 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

How many flights depart from Kentucky to San Diego on average per week?

18 flights are operational weekly from Kentucky to San Diego as of September 2025. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.

How long does it take to fly to San Diego?

On average, it takes 6h 38m to fly from Kentucky to San Diego if you fly out of Louisville (the most popular airport in Kentucky) and into San Diego (the most popular airport in San Diego). If you’re flying out of Lexington and into San Diego, then the flight time is around 7h 10m.

When did momondo last update prices for flights from Kentucky to San Diego Airport?

Prices for flights from Kentucky to San Diego Airport are updated daily.

How many operators does momondo search for flights from Kentucky to San Diego Airport?

There are 8 operators available for flights from Kentucky to San Diego Airport as of September 2025.

How old do you have to be to fly from Kentucky to San Diego Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kentucky to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$60 Cheap Flights from Kentucky to San Diego in 2025/26

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Find the cheapest flights from Kentucky to San Diego

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:05 am - 9:57 amCVG-SAN

6h 52m1 stop

12:46 pm - 12:34 amSAN-CVG

8h 48m1 stop

$197Frontier

Find Deal

Thu, Oct 16 - Thu, Oct 23

8:00 am - 12:33 pmCVG-SAN

7h 33m1 stop

9:03 pm - 12:19 pmSAN-CVG

12h 16m1 stop

$202Frontier

Find Deal

Thu, Oct 2 - Sun, Oct 5

8:04 pm - 11:43 pmLEX-SAN

6h 39m1 stop

2:20 pm - 11:53 pmSAN-LEX

6h 33m1 stop

$217American Airlines

Find Deal

Wed, Mar 4 - Tue, Mar 10

2:57 pm - 11:04 pmSDF-SAN

11h 07m1 stop

4:06 pm - 2:02 pmSAN-SDF

18h 56m1 stop

$235Multiple Airlines

Find Deal

Fri, Oct 24 - Sun, Oct 26

1:02 pm - 8:45 pmSDF-SAN

10h 43m1 stop

6:15 am - 10:00 pmSAN-SDF

12h 45m1 stop

$239American Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

4:48 pm - 11:48 amCVG-SAN

22h 00m1 stop

6:15 am - 1:40 amSAN-CVG

16h 25m2 stops

$242Multiple Airlines

Find Deal

Sun, Sep 28 - Fri, Oct 3

6:00 am - 11:40 amBNA-SAN

7h 40m1 stop

7:50 pm - 5:13 amSAN-BNA

7h 23m1 stop

$256United Airlines

Find Deal

Tue, Oct 14 - Wed, Oct 29

12:50 pm - 6:30 pmBNA-SAN

7h 40m1 stop

7:50 pm - 5:13 amSAN-BNA

7h 23m1 stop

$275United Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 29

7:45 am - 2:11 pmLEX-SAN

9h 26m1 stop

10:00 pm - 9:52 amSAN-LEX

8h 52m1 stop

$277Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

1:52 pm - 6:12 pmBNA-SAN

6h 20m1 stop

6:15 am - 2:23 pmSAN-BNA

6h 08m1 stop

$277Delta

Find Deal

Fri, Dec 12 - Mon, Dec 15

American Airlines flights from Kentucky to San Diego

Our best American Airlines deals on Kentucky to San Diego flight tickets

American Airlines

Mar 4

LEX8:04 pmLexington Blue Grass

6h 39m

1 stop

SAN11:43 pmSan Diego

Mar 10

SAN2:20 pmSan Diego

6h 33m

1 stop

LEX11:53 pmLexington Blue Grass

$217

Find similar

American Airlines

Dec 10

SDF1:02 pmLouisville Intl

10h 43m

1 stop

SAN8:45 pmSan Diego

Dec 13

SAN6:15 amSan Diego

12h 45m

1 stop

SDF10:00 pmLouisville Intl

$239

Find similar

American Airlines

Sep 23

LEX3:36 pmLexington Blue Grass

7h 14m

1 stop

SAN7:50 pmSan Diego

Oct 25

SAN1:14 pmSan Diego

7h 07m

1 stop

LEX11:21 pmLexington Blue Grass

$258

Find similar

Frontier flights from Kentucky to San Diego

Our best Frontier deals on Kentucky to San Diego flight tickets

Frontier

Sep 23

CVG8:00 amCincinnati Cinci./N. Kentucky

17h 24m

1 stop

SAN10:24 pmSan Diego

Oct 4

SAN7:15 amSan Diego

12h 26m

1 stop

CVG10:41 pmCincinnati Cinci./N. Kentucky

$196

Find similar

Frontier

Oct 16

CVG6:05 amCincinnati Cinci./N. Kentucky

6h 52m

1 stop

SAN9:57 amSan Diego

Oct 23

SAN12:46 pmSan Diego

8h 48m

1 stop

CVG12:34 amCincinnati Cinci./N. Kentucky

$197

Find similar

Frontier

Sep 29

CVG6:18 amCincinnati Cinci./N. Kentucky

7h 51m

1 stop

SAN11:09 amSan Diego

Oct 2

SAN6:25 amSan Diego

6h 18m

1 stop

CVG3:43 pmCincinnati Cinci./N. Kentucky

$200

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Thu 10/16

6:05 am-9:57 am

1 stop6h 52m

San Diego

Thu 10/23

12:46 pm-12:34 am

1 stop8h 48m

$197

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Thu 10/2

8:00 am-12:33 pm

1 stop7h 33m

San Diego

Sun 10/5

9:03 pm-12:19 pm

1 stop12h 16m

$202

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Wed 3/4

8:04 pm-11:43 pm

1 stop6h 39m

San Diego

Tue 3/10

2:20 pm-11:53 pm

1 stop6h 33m

$217

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Fri 10/24

2:57 pm-11:04 pm

1 stop11h 07m

San Diego

Sun 10/26

4:06 pm-2:02 pm

1 stop18h 56m

$235

LouisvilleSan Diego

SDF - SAN

SDFSAN

Louisville Intl

Wed 12/10

1:02 pm-8:45 pm

1 stop10h 43m

San Diego

Sat 12/13

6:15 am-10:00 pm

1 stop12h 45m

$239

CincinnatiSan Diego

CVG - SAN

CVGSAN

Cincinnati Cinci./N. Kentucky

Sun 9/28

4:48 pm-11:48 am

1 stop22h 00m

San Diego

Fri 10/3

6:15 am-1:40 am

2 stops16h 25m

$242

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Tue 10/14

6:00 am-11:40 am

1 stop7h 40m

San Diego

Wed 10/29

7:50 pm-5:13 am

1 stop7h 23m

$256

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Wed 10/15

12:50 pm-6:30 pm

1 stop7h 40m

San Diego

Wed 10/29

7:50 pm-5:13 am

1 stop7h 23m

$275

LexingtonSan Diego

LEX - SAN

LEXSAN

Lexington Blue Grass

Wed 12/10

7:45 am-2:11 pm

1 stop9h 26m

San Diego

Sat 12/13

10:00 pm-9:52 am

1 stop8h 52m

$277

NashvilleSan Diego

BNA - SAN

BNASAN

Nashville Intl

Fri 12/12

1:52 pm-6:12 pm

1 stop6h 20m

San Diego

Mon 12/15

6:15 am-2:23 pm

1 stop6h 08m

$277

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Kentucky to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of August, then departing from Kentucky during the month September is also very affordable. Most momondo users find prices during this month for around $396.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Kentucky to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $416. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $505. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $393. Flights at noon are often more expensive with an average ticket price of $520.

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Kentucky when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $446 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Kentucky for as low as $364 on momondo.

Cheap Kentucky to San Diego flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kentucky to San Diego

Fastest flight time	4h 15m
Direct flights	Every day
Airports in San Diego	1 airport

The fastest flight from Kentucky to San Diego takes 4h 15m

Direct flights go from Kentucky to San Diego every day.

There is 1 airport near San Diego: San Diego (SAN)

Search flight deals

When did momondo last update prices for flights from Kentucky to San Diego Airport?
Prices for flights from Kentucky to San Diego Airport are updated daily.
How many operators does momondo search for flights from Kentucky to San Diego Airport?
There are 8 operators available for flights from Kentucky to San Diego Airport as of September 2025.
How old do you have to be to fly from Kentucky to San Diego Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kentucky to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Kentucky to San Diego

Compare and see reviews for airlines that fly from Kentucky to San Diego with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $232	Free Cancellation	Rating 6.3 8,030 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $247	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $274	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 7,964 reviews	Search Delta flights
Southwest	PriceFrom $346	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights

Coronado

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El Cajon

Julian

La Mesa

National City

Poway

Imperial Beach

San Ysidro

Borrego Springs

Lemon Grove

Alpine

Santee

Why use momondo?

Why should I use momondo to find a flight deal from Kentucky to San Diego?

Finding the right flight to San Diego from Kentucky is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.

Can I find flights from Kentucky to San Diego with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Diego from Kentucky with this policy.

How can momondo help me find flights from Kentucky to San Diego?

Once you have performed a search for Kentucky to San Diego flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Kentucky to San Diego right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Diego from Kentucky. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Flights to Washington, D.C.from $49

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Cheap flights from Kentucky to San Diego from $60

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kentucky to San Diego departing on 10/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Kentucky to San Diego

Our best American Airlines deals on Kentucky to San Diego flight tickets

Frontier flights from Kentucky to San Diego

Our best Frontier deals on Kentucky to San Diego flight tickets

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How to get the cheapest flight ticket from Kentucky to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of August, then departing from Kentucky during the month September is also very affordable. Most momondo users find prices during this month for around $396.

What is the cheapest day to depart on your flight to San Diego?

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $393. Flights at noon are often more expensive with an average ticket price of $520.

How far in advance should I book a flight to San Diego?

What is the cheapest airline that flies from Kentucky to San Diego?

Frontier and Spirit Airlines are the most popular carriers operating from Kentucky to San Diego

What airlines fly to San Diego?

How many flights depart from Kentucky to San Diego on average per week?

18 flights are operational weekly from Kentucky to San Diego as of September 2025. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.

How long does it take to fly to San Diego?

On average, it takes 6h 38m to fly from Kentucky to San Diego if you fly out of Louisville (the most popular airport in Kentucky) and into San Diego (the most popular airport in San Diego). If you’re flying out of Lexington and into San Diego, then the flight time is around 7h 10m.

Cheap Kentucky to San Diego flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kentucky to San Diego

Fastest flight time

Direct flights

Airports in San Diego

When did momondo last update prices for flights from Kentucky to San Diego Airport?

How many operators does momondo search for flights from Kentucky to San Diego Airport?

How old do you have to be to fly from Kentucky to San Diego Airport?

What documentation or ID do you need to fly to San Diego Airport?

Best airlines flying from Kentucky to San Diego

Compare and see reviews for airlines that fly from Kentucky to San Diego with momondo

Traveling to a place near San Diego?

Why use momondo?

Why should I use momondo to find a flight deal from Kentucky to San Diego?

Can I find flights from Kentucky to San Diego with flexible booking policies on momondo?

How can momondo help me find flights from Kentucky to San Diego?

I’m not ready to book a flight from Kentucky to San Diego right now. Can momondo alert me if prices change?

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California