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$91+ Cheap flights from George Bush Intcntl (IAH) to Louisville (SDF)

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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — SDF
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Houston George Bush Intcntl to Louisville Intl are usually found in July or January, booked 18 days in advance, depart on a Saturday or Friday and return on a Friday

Cheap flight deals from George Bush Intcntl to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$180
(Kiwi.com)

One-way from

$91
(Kiwi.com)

Popular in

August

Cheapest in

July

Average price

$413

Good round-trip deal

$319 or less

Good one-way deal

$149 or less
From Houston George Bush Intcntl to Louisville Intl
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One-way flight from Houston George Bush Intcntl to Louisville Intl
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Highest demand for flights based on searches. 12% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Houston George Bush Intcntl to Louisville Intl.
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Price to beat on a one-way flight from Houston George Bush Intcntl to Louisville Intl.
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Find flight deals from George Bush Intcntl to Louisville

Cheapest flights from George Bush Intcntl to Louisville
Explore the most affordable flight options available from George Bush Intcntl to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/71:09 pmIAH - SDF
1 stop26h 27mSpirit Airlines
Sat 10/116:58 pmSDF - IAH
1 stop6h 30mSpirit Airlines
Deal found 9/15$180
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:44 amIAH - SDF
1 stop11h 31mSpirit Airlines
Wed 10/85:31 pmSDF - IAH
1 stop7h 57mSpirit Airlines
Deal found 9/14$183
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/218:37 pmIAH - SDF
1 stop20h 18mMultiple Airlines
Sun 10/267:15 amSDF - IAH
1 stop24h 49mMultiple Airlines
Deal found 9/15$186
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/236:00 amIAH - SDF
1 stop11h 03mSpirit Airlines
Sat 10/256:58 pmSDF - IAH
1 stop6h 30mSpirit Airlines
Deal found 9/15$194
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/226:00 amIAH - SDF
1 stop9h 36mSpirit Airlines
Fri 10/2411:47 amSDF - IAH
1 stop8h 16mSpirit Airlines
Deal found 9/15$196
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/226:00 amIAH - SDF
1 stop9h 36mMultiple Airlines
Sun 10/267:15 amSDF - IAH
1 stop24h 49mMultiple Airlines
Deal found 9/14$198
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 10/126:44 amIAH - SDF
1 stop11h 31mSpirit Airlines
Wed 10/155:31 pmSDF - IAH
1 stop7h 57mSpirit Airlines
Deal found 9/13$199
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sun 10/196:44 amIAH - SDF
1 stop11h 31mSpirit Airlines
Thu 10/236:58 pmSDF - IAH
1 stop6h 30mSpirit Airlines
Deal found 9/15$202
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Fri 10/3112:49 pmIAH - SDF
1 stop8h 58mMultiple Airlines
Mon 11/312:21 pmSDF - IAH
1 stop13h 07mMultiple Airlines
Deal found 9/14$204
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:30 amIAH - SDF
1 stop8h 38mSpirit Airlines
Sat 11/86:00 amSDF - IAH
1 stop7h 32mSpirit Airlines
Deal found 9/14$205
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/206:44 amIAH - SDF
1 stop11h 31mSpirit Airlines
Sat 10/256:58 pmSDF - IAH
1 stop6h 30mSpirit Airlines
Deal found 9/15$207

Cheapflights Fare Finder

 
Customize your flight search to find flights from George Bush Intcntl to Louisville 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 September 16, 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Louisville that are best for you.

Fly from

George Bush Intcntl

Fly to

Louisville

Route

Depart

Return

Price

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Tue 10/7

1:09 pm-4:36 pm

1 stop26h 27m

Louisville Intl

Sat 10/11

6:58 pm-12:28 am

1 stop6h 30m

$180

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Thu 11/6

7:30 am-5:08 pm

1 stop8h 38m

Louisville Intl

Sat 11/8

10:55 am-8:33 pm

1 stop10h 38m

$205

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Fri 10/3

12:47 pm-10:04 pm

1 stop8h 17m

Louisville Intl

Mon 10/6

11:47 am-7:03 pm

1 stop8h 16m

$214

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Wed 10/15

5:45 am-5:55 pm

2 stops11h 10m

Louisville Intl

Sun 10/19

6:58 pm-8:55 am

1 stop14h 57m

$224

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Fri 10/31

12:49 pm-10:47 pm

1 stop8h 58m

Louisville Intl

Mon 11/3

12:21 pm-10:23 pm

2 stops11h 02m

$227

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Thu 10/23

5:45 am-6:03 pm

2 stops11h 18m

Louisville Intl

Mon 10/27

11:47 am-12:05 am

2 stops13h 18m

$251

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Tue 10/7

9:45 am-1:10 pm

Nonstop2h 25m

Louisville Intl

Sat 10/11

3:37 pm-5:10 pm

Nonstop2h 33m

$264

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Thu 10/23

6:25 pm-9:54 pm

Nonstop2h 29m

Louisville Intl

Tue 10/28

9:15 am-10:57 am

Nonstop2h 42m

$264

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Wed 11/5

6:40 pm-9:57 pm

Nonstop2h 17m

Louisville Intl

Sat 11/8

9:15 am-10:57 am

Nonstop2h 42m

$264

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Thu 11/13

4:42 pm-9:59 am

1 stop16h 17m

Louisville Intl

Sun 11/16

6:00 am-3:25 pm

2 stops10h 25m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 22 results
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Best time to book a flight from George Bush Intcntl to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from George Bush Intcntl 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 Houston George Bush Intcntl Airport to Louisville

How far ahead should I book a flight from Houston George Bush Intcntl Airport to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from George Bush Intcntl to Louisville. Price data was last updated on September 12, 2025.

The best time to book flights from Houston George Bush Intcntl Airport to Louisville is 18 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Louisville?

Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Louisville (average of $299). Flying from Houston George Bush Intcntl Airport to Louisville in April is currently the most expensive (average of $369). 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.

What is the cheapest time of day to fly from IAH to SDF?

Find hourly flight availability from George Bush Intcntl to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s typically best to fly out from Houston George Bush Intcntl Airport to Louisville at noon. Doing so could potentially save you 12% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Houston George Bush Intcntl Airport to Louisville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,019 reviews
Delta
8.0
Very good
7,957 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Louisville. 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 Louisville from Houston George Bush Intcntl?

    Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly into when you book flights from Houston George Bush Intcntl to Louisville. 4 airlines have flights to Louisville Intl from Houston George Bush Intcntl on a regular basis. Booking flights from Houston George Bush Intcntl to Louisville Intl should not be difficult; the airport handles an average of 9 inbound flights from Houston George Bush Intcntl per day.

  • How long is the flight from Houston George Bush Intcntl Airport to Louisville?

    For as low as $180, Spirit Airlines can have you in Louisville from Houston George Bush Intcntl Airport in 26h 27m. Airlines will cover a distance of 787 mi.

  • What are the cheapest airlines flying from Houston George Bush Intcntl Airport to Louisville round-trip?

    Cheapflights users have booked flights from Houston George Bush Intcntl Airport to Louisville round-trip from $169. Other airlines that can offer you cheap pricing are Spirit Airlines, from $206, and United Airlines, from $267. Delta is 61% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Houston George Bush Intcntl Airport to Louisville?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Houston George Bush Intcntl Airport to Louisville on time: ANA (83%), United Airlines (77%), Mesa Airlines (77%).

  • What are the cheapest flights from Houston George Bush Intcntl Airport to Louisville?

    Looking at all options, your cheapest flight can be booked for $149. While the most popular route (Houston George Bush Intcntl - Louisville Intl) can be booked for $180 on average, our data indicates $284 when flying from Houston George Bush Intcntl Airport to Louisville.

  • Can I find deals for flights from George Bush Intcntl to Louisville that include hotel bookings?

    Yes. In addition to deals on George Bush Intcntl to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from George Bush Intcntl to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to Louisville.

  • Can I find deals for business class flights from George Bush Intcntl to Louisville?

    Yes. Cheapflights offers flight deals from George Bush Intcntl to Louisville 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 Houston George Bush Intcntl Airport to Louisville?

    Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Louisville (average of $299). Flying from Houston George Bush Intcntl Airport to Louisville in April is currently the most expensive (average of $369). 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 Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Top 4 airlines flying from George Bush Intcntl to Louisville

Discover the top 4 airlines that operate flights from George Bush Intcntl to Louisville. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$169Average$333FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$206Average$240FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$267Average$438FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$318Average$397FlexibilityNo cancel feeOn-time71%

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