$94 Cheap Flights from Houston (HOU) to Louisville (SDF)

View $94 flight on Sun, Sep 21, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Houston to Louisville (HOU-SDF)

Prices were available within the past 7 days and start at $94 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Sep 18 - Mon, Sep 22
IAH
Houston
SDF
Louisville
$188 Roundtrip, found 2 hours ago
$188
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Thu, Sep 18 from Houston to Louisville, returning Mon, Sep 22, priced at $188 found 2 hours ago
Spirit Airlines
Tue, May 13 - Fri, May 16
IAH
Houston
SDF
Louisville
$189 Roundtrip, found 1 day ago
$189
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Tue, May 13 from Houston to Louisville, returning Fri, May 16, priced at $189 found 1 day ago
Spirit Airlines
Thu, Jun 19 - Sat, Jun 21
IAH
Houston
SDF
Louisville
$202 Roundtrip, found 10 hours ago
$202
Roundtrip
found 10 hours ago
Select Spirit Airlines flight, departing Thu, Jun 19 from Houston to Louisville, returning Sat, Jun 21, priced at $202 found 10 hours ago
Spirit Airlines
Tue, May 13 - Mon, May 26
IAH
Houston
SDF
Louisville
$202 Roundtrip, found 1 day ago
$202
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Tue, May 13 from Houston to Louisville, returning Mon, May 26, priced at $202 found 1 day ago
Spirit Airlines
Sun, May 4 - Mon, May 12
IAH
Houston
SDF
Louisville
$205 Roundtrip, found 6 days ago
$205
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Sun, May 4 from Houston to Louisville, returning Mon, May 12, priced at $205 found 6 days ago
Spirit Airlines
Mon, May 5 - Fri, May 16
IAH
Houston
SDF
Louisville
$205 Roundtrip, found 6 days ago
$205
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Mon, May 5 from Houston to Louisville, returning Fri, May 16, priced at $205 found 6 days ago
United
Wed, May 14 - Fri, May 16
IAH
Houston
SDF
Louisville
$210 Roundtrip, found 9 hours ago
$210
Roundtrip
found 9 hours ago
Select United flight, departing Wed, May 14 from Houston to Louisville, returning Fri, May 16, priced at $210 found 9 hours ago
Southwest Airlines
Tue, May 20 - Wed, May 21
HOU
Houston
SDF
Louisville
$231 Roundtrip, found 5 days ago
$231
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Tue, May 20 from Houston to Louisville, returning Wed, May 21, priced at $231 found 5 days ago
American Airlines
Tue, Aug 5 - Tue, Aug 12
IAH
Houston
SDF
Louisville
$234 Roundtrip, found 2 hours ago
$234
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Tue, Aug 5 from Houston to Louisville, returning Tue, Aug 12, priced at $234 found 2 hours ago
Delta
Tue, May 27 - Tue, Jun 3
IAH
Houston
SDF
Louisville
$251 Roundtrip, just found
$251
Roundtrip
just found
Select Delta flight, departing Tue, May 27 from Houston to Louisville, returning Tue, Jun 3, priced at $251 just found
Flights from Houston (IAH) to Louisville (SDF)
Origin airport
George Bush Intercontinental
Destination airport
Louisville Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines
Roundtrip price
$187
Distance
788 mi

Houston to Louisville Flights

The cheapest times to fly from Houston 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 Houston to Louisville are during the month of September. You can find some of the cheapest flights from Houston to Louisville with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Houston to Louisville

Sunday is one of the best days to book for cheap flights from Houston 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 Houston 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 Houston to Louisville in 2025. You can also book with separate airlines for your outbound and return journeys, from $94 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 Houston 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 Houston 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.

Frequently asked questions

How much does a flight from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF) cost?
You can land affordable return tickets from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF) starting at $231. Reserve your seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving HOU on May 11 2025 and touching down at SDF. The price was last updated on April 22 2025 and has not changed since.
What is the cheapest month to fly from HOU to SDF?
The cheapest flights from HOU to SDF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF)?
When heading out of William P. Hobby Airport (HOU), you can hop on a nonstop flight to Louisville Intl. Airport (SDF) with Southwest Airlines.
What is the cheapest airline that flies from HOU to SDF?
Currently, the cheapest carrier offering one-way flights from HOU to SDF is Southwest Airlines. You can book a seat on this route from $116. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from HOU on May 28 2025. Prices were last updated on April 22 2025 and have not changed since.
How many flights per day from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF)?
On average, William P. Hobby Airport (HOU) has 3 nonstop flights to Louisville Intl. Airport (SDF) weekly. If you’re looking for more choice, use Expedia’s filters to search for flights with one or more stops. Squeeze in a visit to another destination or simply break up your travels.
What are the most popular departure times for flights from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF)?
More passengers fly between HOU and SDF at 12 PM than at any other time of day. Prefer a quieter experience? Travel outside of rush hours and you could save on your fare as well.
What day of the week has the most flights from HOU to SDF?
Friday has the most flights from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF). Consider taking off on this day and you’ll have the best chance of finding a departure that fits your plans.
What is the earliest flight from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF)?
Take the earliest flight at around 12:55PM UTC-6, departing from William P. Hobby Airport (HOU). You’ll be traveling for approximately 2h 5m, touching down at Louisville Intl. Airport (SDF) at approximately 4:00PM UTC-5.
How long does it take to fly from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF)?
The average flight time from HOU to SDF is 2 hours and 5 minutes, covering a total distance of 800 mi.
What is the best time to fly from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF)?
To touch down at Louisville Intl. Airport (SDF) on schedule, pick a flight that leaves from William P. Hobby Airport (HOU) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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.
What airports do you fly into for Louisville from William P. Hobby Airport (HOU)?
Compare your flight options from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF). This is the only airport in Louisville you can arrive at if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF) last-minute?
Last-minute bookings from HOU to SDF are usually more expensive. To lock in the lowest rates, start looking for flights well in advance. That being said, if you’re flexible with your travel plans, you may find a cheap fare right before your journey.
Is it cheaper to book a HOU to SDF flight and hotel package?
You can save money by securing a HOU to SDF flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage it all in one convenient place. Once you’ve chosen your ideal flights and accommodations, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from William P. Hobby Airport (HOU) to Louisville Intl. Airport (SDF)?
Typically, you can cancel or modify your HOU to SDF flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline’s rules and fees on flight changes, or if you need more information, head to our Customer Service portal.

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*Available to One Key members.