$129 Cheap Flights from Carlsbad (CLD) to Louisville (SDF)

View $129 flight on Mon, Nov 24, 2025Opens in a new window

Popular airlines from Carlsbad, CA (CLD-McClellan-Palomar) to Louisville Intl. Airport (SDF)

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Cheap Flights from Carlsbad to Louisville (CLD-SDF)

Prices were available within the past 7 days and start at $129 for one-way flights and $421 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 3 - Wed, Nov 5
CLD
Carlsbad
SDF
Louisville
$421 Roundtrip, found 4 days ago
$421
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 3 from Carlsbad to Louisville, returning Wed, Nov 5, priced at $421 found 4 days ago
American Airlines
Mon, Nov 3 - Wed, Nov 5
CLD
Carlsbad
SDF
Louisville
$456 Roundtrip, found 4 days ago
$456
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 3 from Carlsbad to Louisville, returning Wed, Nov 5, priced at $456 found 4 days ago
American Airlines
Mon, Nov 3 - Wed, Nov 5
CLD
Carlsbad
SDF
Louisville
$541 Roundtrip, found 4 days ago
$541
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 3 from Carlsbad to Louisville, returning Wed, Nov 5, priced at $541 found 4 days ago
American Airlines
Tue, Oct 7 - Mon, Oct 13
CLD
Carlsbad
SDF
Louisville
$543 Roundtrip, found 5 days ago
$543
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct 7 from Carlsbad to Louisville, returning Mon, Oct 13, priced at $543 found 5 days ago
American Airlines
Mon, Nov 3 - Wed, Nov 5
CLD
Carlsbad
SDF
Louisville
$576 Roundtrip, found 4 days ago
$576
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 3 from Carlsbad to Louisville, returning Wed, Nov 5, priced at $576 found 4 days ago
American Airlines
Fri, Dec 19 - Tue, Dec 30
CLD
Carlsbad
SDF
Louisville
$635 Roundtrip, found 3 days ago
$635
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Dec 19 from Carlsbad to Louisville, returning Tue, Dec 30, priced at $635 found 3 days ago
American Airlines
Fri, Oct 17 - Sun, Oct 19
CLD
Carlsbad
SDF
Louisville
$725 Roundtrip, found 6 days ago
$725
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Oct 17 from Carlsbad to Louisville, returning Sun, Oct 19, priced at $725 found 6 days ago
American Airlines
Fri, Oct 17 - Sun, Oct 19
CLD
Carlsbad
SDF
Louisville
$731 Roundtrip, found 6 days ago
$731
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Oct 17 from Carlsbad to Louisville, returning Sun, Oct 19, priced at $731 found 6 days ago
American Airlines
Fri, Oct 17 - Sun, Oct 19
CLD
Carlsbad
SDF
Louisville
$750 Roundtrip, found 6 days ago
$750
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Oct 17 from Carlsbad to Louisville, returning Sun, Oct 19, priced at $750 found 6 days ago
American Airlines
Fri, Dec 19 - Tue, Dec 30
CLD
Carlsbad
SDF
Louisville
$755 Roundtrip, found 3 days ago
$755
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Dec 19 from Carlsbad to Louisville, returning Tue, Dec 30, priced at $755 found 3 days ago

Frequently asked questions

How much does a flight from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF) cost?
Grab a cheap one-way flight from $129 or cheap return flight from $421 from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF)?
Planning your getaway for November is a good way to save, as it's the cheapest month for flights between CLD and SDF. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF)?
To find the cheapest airline flying from CLD to SDF, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF)?
There aren't any daily direct flights departing from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from CLD to SDF?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF)?
Choose a flight from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF) last-minute?
Waiting until just before your departure to book a flight from CLD to SDF often results in higher prices. While it's possible to find some last-minute discounts, they aren't always guaranteed. Be flexible with your itinerary to maximize your chances of snagging a bargain.
Is it cheaper to book a CLD to SDF flight and hotel package?
Opting for a CLD to SDF flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our wide range of stays and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from McClellan-Palomar Airport (CLD) to Louisville Intl. Airport (SDF)?
If you reserved your CLD to SDF flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Travel information

Origin airport
McClellan-Palomar
Destination airport
Louisville Intl.
Airlines serving
American Airlines
Roundtrip price
$421
Distance
1795 mi

Book with confidence

Book with confidence

Carlsbad to Louisville Flights

The cheapest times to fly from Carlsbad to Louisville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Carlsbad to Louisville are during the month of November. You can find some of the cheapest flights from Carlsbad to Louisville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Carlsbad to Louisville

Sunday is one of the best days to book for cheap flights from Carlsbad to Louisville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Carlsbad to Louisville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Carlsbad to Louisville in 2025. You can also book with separate airlines for your outbound and return journeys, from $129 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Carlsbad to Louisville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Carlsbad to Louisville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Carlsbad to Louisville Flights

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*Available to One Key members.