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

View $94 flight on Mon, Sep 22, 2025Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)

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Find available prices by choosing your travel dates.

Cheap Flights from Louisville to Houston (SDF-IAH)

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
Mon, Jun 9 - Thu, Jun 12
SDF
Louisville
IAH
Houston
$188 Roundtrip, found 5 days ago
$188
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Mon, Jun 9 from Louisville to Houston, returning Thu, Jun 12, priced at $188 found 5 days ago
Spirit Airlines
Fri, May 16 - Sat, May 24
SDF
Louisville
IAH
Houston
$202 Roundtrip, found 5 days ago
$202
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Fri, May 16 from Louisville to Houston, returning Sat, May 24, priced at $202 found 5 days ago
Spirit Airlines
Fri, Aug 1 - Mon, Aug 4
SDF
Louisville
IAH
Houston
$208 Roundtrip, found 2 hours ago
$208
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Fri, Aug 1 from Louisville to Houston, returning Mon, Aug 4, priced at $208 found 2 hours ago
Spirit Airlines
Tue, May 27 - Tue, Jun 3
SDF
Louisville
IAH
Houston
$210 Roundtrip, found 4 hours ago
$210
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Tue, May 27 from Louisville to Houston, returning Tue, Jun 3, priced at $210 found 4 hours ago
Spirit Airlines
Fri, May 2 - Fri, May 16
SDF
Louisville
IAH
Houston
$213 Roundtrip, found 3 days ago
$213
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Fri, May 2 from Louisville to Houston, returning Fri, May 16, priced at $213 found 3 days ago
Spirit Airlines
Mon, May 19 - Sat, May 24
SDF
Louisville
IAH
Houston
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Mon, May 19 from Louisville to Houston, returning Sat, May 24, priced at $217 found 2 days ago
Spirit Airlines
Thu, Jun 19 - Mon, Jun 23
SDF
Louisville
IAH
Houston
$225 Roundtrip, found 4 hours ago
$225
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Thu, Jun 19 from Louisville to Houston, returning Mon, Jun 23, priced at $225 found 4 hours ago
American Airlines
Tue, Jun 10 - Mon, Jun 16
SDF
Louisville
IAH
Houston
$226 Roundtrip, found 1 day ago
$226
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Jun 10 from Louisville to Houston, returning Mon, Jun 16, priced at $226 found 1 day ago
United
Sat, Sep 6 - Tue, Sep 9
SDF
Louisville
IAH
Houston
$231 Roundtrip, found 4 hours ago
$231
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Sep 6 from Louisville to Houston, returning Tue, Sep 9, priced at $231 found 4 hours ago
Delta
Mon, Jun 16 - Thu, Jun 19
SDF
Louisville
IAH
Houston
$234 Roundtrip, found 4 hours ago
$234
Roundtrip
found 4 hours ago
Select Delta flight, departing Mon, Jun 16 from Louisville to Houston, returning Thu, Jun 19, priced at $234 found 4 hours ago
Flights from Louisville (SDF) to Houston (IAH)
Origin airport
Louisville Intl.
Destination airport
George Bush Intercontinental
Airlines serving
American Airlines, Delta, Spirit Airlines, United
Roundtrip price
$187
Distance
788 mi

Louisville to Houston Flights

The cheapest times to fly from Louisville to Houston

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

The best time to book a flight from Louisville to Houston

Sunday is one of the best days to book for cheap flights from Louisville to Houston: 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 Louisville to Houston

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 Louisville to Houston 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 Louisville to Houston 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 Louisville to Houston 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 Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH) cost?
Cheap round-trip flights from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH) start at $231. 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 United flight leaving SDF on May 21 2025 and touching down at IAH. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from SDF to IAH?
The cheapest flights from SDF to IAH 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 Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)?
Fly nonstop from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH) on a United Airlines flight.
What is the cheapest airline that flies from SDF to IAH?
Book a flight from SDF to IAH with Spirit Airlines. This carrier currently offers the cheapest one-way ticket on this route, starting at $118. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SDF on May 4 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)?
With an average of 2 nonstop flights that operate from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH) each day, you’ll be off on your next adventure in no time.
What are the most popular departure times for flights from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)?
Flights between SDF and IAH are their busiest at 7 AM. If you’re after a quieter trip and possibly cheaper prices, choose a departure outside the usual busy windows.
What day of the week has the most flights from SDF to IAH?
Friday has the most flights from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH). Consider leaving on this day and you’ll have a greater chance of finding a departure that works with your plans.
What is the earliest flight from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)?
Louisville Intl. Airport (SDF)’s earliest flight to George Bush Intercontinental Airport (IAH) leaves at approximately 7:03AM UTC-5. With a travel duration of 2h 46m, you’ll land at around 8:49AM UTC-6.
How long does it take to fly from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)?
The average flight time from SDF to IAH is 2 hours and 46 minutes, covering a distance of 790 mi.
What airline has the least delays from SDF to IAH?
With 100% of journeys typically arriving on schedule, Delta Air Lines has the best on-time performance for nonstop flights from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH). To monitor your flight status and receive notifications if anything changes, simply head to the Expedia App.
What is the best time to fly from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)?
To avoid possible delays on the Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH) route, fly before 3 PM. Departures after this time have a 22% higher chance of being 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.
What airports do you fly into for Houston from Louisville Intl. Airport (SDF)?
If you’re traveling on a direct flight from Louisville Intl. Airport (SDF) to Houston, you’ll touch down at either George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU).
Is it cheaper to buy a plane ticket from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH) last-minute?
Holding off until just before your trip to book a flight from SDF to IAH often results in higher prices. While it’s possible to find some last-minute discounts, there’s no guarantee. Be flexible with your itinerary to boost your chances of landing a bargain.
Is it cheaper to book a SDF to IAH flight and hotel package?
You can save money by booking a SDF to IAH 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 place. Once you’ve chosen your preferred accommodations and flights, consider adding extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to George Bush Intercontinental Airport (IAH)?
In most cases, you’re able to cancel or reschedule your SDF to IAH flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline’s policies and fees on flight changes, or if you need more details, visit our Customer Service portal.

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*Available to One Key members.