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$73+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — SDF
Nov 20 — Nov 271
Thu 11/20
Thu 11/27
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 Thursday and return on a Wednesday

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 October 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$183
(American Airlines)

One-way from

$73
(United Airlines)

Popular in

August

Cheapest in

July

Average price

$449

Good round-trip deal

$386 or less

Good one-way deal

$170 or less
Provider with most accurate pricing for Houston George Bush Intcntl-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Houston George Bush Intcntl-Louisville Intl flights.
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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. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 21, 2025.

This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amIAH - SDF
1 stop6h 11mAmerican Airlines
Thu 12/1110:47 amSDF - IAH
1 stop6h 13mAmerican Airlines
Deal found 10/21$183
This Mytrip deal was found by Cheapflights users on 10/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:11 pmIAH - SDF
1 stop15h 53mMultiple Airlines
Mon 11/177:46 pmSDF - IAH
1 stop14h 25mMultiple Airlines
Deal found 10/19$200
This Delta deal was found by Cheapflights users on 10/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:10 amIAH - SDF
1 stop6h 03mDelta
Sun 12/77:59 pmSDF - IAH
1 stop5h 00mDelta
Deal found 10/21$201
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 12/47:11 pmIAH - SDF
1 stop14h 20mMultiple Airlines
Sun 12/72:55 pmSDF - IAH
1 stop7h 53mMultiple Airlines
Deal found 10/19$212
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 12/77:11 pmIAH - SDF
1 stop14h 20mMultiple Airlines
Thu 12/1111:55 amSDF - IAH
1 stop8h 53mMultiple Airlines
Deal found 10/20$216
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 12/77:11 pmIAH - SDF
1 stop14h 20mMultiple Airlines
Fri 12/1211:21 amSDF - IAH
1 stop27h 40mMultiple Airlines
Deal found 10/20$217
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:38 pmIAH - SDF
Nonstop2h 19mUnited Airlines
Thu 12/117:00 amSDF - IAH
1 stop5h 50mUnited Airlines
Deal found 10/21$223
This Mytrip deal was found by Cheapflights users on 10/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:10 pmIAH - SDF
2 stops18h 06mSpirit Airlines
Sun 11/97:11 pmSDF - IAH
1 stop15h 00mSpirit Airlines
Deal found 10/19$226

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 October 21, 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 12/9

6:38 pm-9:57 pm

Nonstop2h 19m

Louisville Intl

Thu 12/11

7:00 am-11:50 am

1 stop5h 50m

$223

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Thu 11/20

5:34 am-5:53 pm

1 stop11h 19m

Louisville Intl

Sun 11/23

8:31 pm-9:01 am

1 stop13h 30m

$226

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Tue 12/9

9:46 am-5:16 pm

1 stop6h 30m

Louisville Intl

Thu 12/11

6:00 am-11:30 am

1 stop6h 30m

$250

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Thu 12/4

7:11 pm-10:31 am

1 stop14h 20m

Louisville Intl

Sun 12/7

11:55 am-9:41 am

3 stops22h 46m

$252

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Fri 11/7

5:34 am-6:16 pm

1 stop11h 42m

Louisville Intl

Mon 11/10

7:46 pm-9:11 am

1 stop14h 25m

$257

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Sat 12/13

4:06 pm-11:00 am

2 stops17h 54m

Louisville Intl

Mon 12/15

11:55 am-8:36 am

2 stops21h 41m

$298

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Wed 12/3

12:40 pm-9:13 pm

1 stop7h 33m

Louisville Intl

Tue 12/9

6:00 am-12:31 pm

1 stop7h 31m

$313

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Mon 12/8

6:38 pm-9:57 pm

Nonstop2h 19m

Louisville Intl

Fri 12/12

7:10 am-8:50 am

Nonstop2h 40m

$330

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Mon 12/1

6:40 pm-12:06 am

1 stop4h 26m

Louisville Intl

Wed 12/3

7:15 am-12:31 pm

1 stop6h 16m

$336

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Fri 1/16

6:40 pm-9:59 pm

Nonstop2h 19m

Louisville Intl

Sun 1/18

3:30 pm-5:18 pm

Nonstop2h 48m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 22 results
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Compare providers for flights from George Bush Intcntl to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from George Bush Intcntl to Louisville in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Houston George Bush Intcntl Airport-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-Louisville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston George Bush Intcntl Airport-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 October 17, 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, September is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Louisville (average of $96). Flying from Houston George Bush Intcntl Airport to Louisville in March is currently the most expensive (average of $236). 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 October 21, 2025.

It’s typically best to fly out from Houston George Bush Intcntl Airport to Louisville at noon. Doing so could potentially save you 64% 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 October 21, 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
7.9
Good
7,978 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,978 reviews
Delta
7.9
Good
7,978 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,991 reviews
Delta
7.9
Good
7,978 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,023 reviews
Delta
7.9
Good
7,978 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Spirit Airlines
6.3
Okay
8,096 reviews
Delta
7.9
Good
7,978 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 7 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 $223, United Airlines can have you in Louisville from Houston George Bush Intcntl Airport in 2h 19m. Airlines will cover a distance of 787 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $281. 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 (92%), United Airlines (88%), Mesa Airlines (88%).

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

    Looking at all options, your cheapest flight can be booked for $170. While the most popular route (Houston George Bush Intcntl - Louisville Intl) can be booked for $224 on average, our data indicates $349 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, September is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Louisville (average of $96). Flying from Houston George Bush Intcntl Airport to Louisville in March is currently the most expensive (average of $236). 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 October 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$169Average$333FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$206Average$237FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$281Average$440FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$318Average$397FlexibilityNo cancel feeOn-time71%

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