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$78+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — SDF
May 11 — May 181
Mon 5/11
Mon 5/18
1 adult, Economy
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Cheap 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 April 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/7. 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 5/18:15 am
IAH
-
SDF
1 stop7h 49m
Multiple Airlines
Mon 5/410:33 am
SDF
-
IAH
1 stop13h 00m
Multiple Airlines
Deal found 4/7$173
This Kiwi.com deal was found by Cheapflights users on 4/7. 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 5/39:46 am
IAH
-
SDF
1 stop22h 42m
Multiple Airlines
Sat 5/910:33 am
SDF
-
IAH
1 stop29h 30m
Multiple Airlines
Deal found 4/7$196
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 4/248:15 am
IAH
-
SDF
1 stop7h 49m
Multiple Airlines
Mon 4/276:06 pm
SDF
-
IAH
2 stops18h 05m
Multiple Airlines
Deal found 4/8$201
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 5/18:15 am
IAH
-
SDF
1 stop7h 49m
Multiple Airlines
Fri 5/1510:33 am
SDF
-
IAH
2 stops33h 15m
Multiple Airlines
Deal found 4/9$208
This CheapOair deal was found by Cheapflights users on 4/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:16 pm
IAH
-
SDF
1 stop27h 48m
Spirit Airlines
Thu 5/710:33 am
SDF
-
IAH
1 stop14h 03m
Spirit Airlines
Deal found 4/9$215
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 6/168:29 am
IAH
-
SDF
1 stop26h 01m
Multiple Airlines
Mon 6/299:10 pm
SDF
-
IAH
1 stop18h 41m
Multiple Airlines
Deal found 4/6$226
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 5/18:15 am
IAH
-
SDF
1 stop9h 43m
Multiple Airlines
Sat 5/26:06 pm
SDF
-
IAH
1 stop18h 21m
Multiple Airlines
Deal found 4/8$228
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 5/88:29 am
IAH
-
SDF
1 stop9h 29m
Multiple Airlines
Fri 5/1510:33 am
SDF
-
IAH
2 stops33h 44m
Multiple Airlines
Deal found 4/10$229

Find 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 April 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$173
(Kiwi.com)

One-way from

$78
(Kiwi.com)

Popular in

February

Cheapest in

July

Average price

$455

Good round-trip deal

$405 or less

Good one-way deal

$224 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. 23% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in April 2026
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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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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 April 11, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Sat 5/30

7:00 am-2:42 pm

1 stop6h 42m

Louisville Intl

Mon 6/1

5:52 pm-10:16 pm

1 stop5h 24m

$311

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Fri 6/19

6:49 pm-10:15 pm

Nonstop2h 26m

Louisville Intl

Mon 6/22

6:15 am-7:42 am

Nonstop2h 27m

$359

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Sat 6/13

8:30 am-11:54 am

Nonstop2h 24m

Louisville Intl

Sat 6/20

5:46 pm-10:59 pm

1 stop6h 13m

$369

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Sat 6/13

5:20 pm-12:16 am

1 stop5h 56m

Louisville Intl

Sat 6/20

6:38 pm-11:59 pm

1 stop6h 21m

$379
Quickest round-trip

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Tue 7/21

8:30 am-11:54 am

Nonstop2h 24m

Louisville Intl

Sun 7/26

6:15 am-7:42 am

Nonstop2h 27m

$379

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Sun 5/31

5:55 am-11:53 am

1 stop4h 58m

Louisville Intl

Sun 6/7

8:09 pm-11:59 pm

1 stop4h 50m

$379

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Sun 7/19

8:30 am-11:54 am

Nonstop2h 24m

Louisville Intl

Sat 7/25

6:15 am-7:42 am

Nonstop2h 27m

$379

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Sat 5/23

8:30 am-11:54 am

Nonstop2h 24m

Louisville Intl

Sat 5/23

7:37 pm-12:15 am

1 stop5h 38m

$381

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Tue 5/5

4:35 pm-8:00 pm

Nonstop2h 25m

Louisville Intl

Sat 5/9

3:30 pm-5:09 pm

Nonstop2h 39m

$385

HoustonLouisville

IAH - SDF

IAHSDF

Houston George Bush Intcntl

Tue 4/28

8:05 am-2:31 pm

1 stop5h 26m

Louisville Intl

Fri 5/1

8:10 am-1:51 pm

1 stop6h 41m

$391

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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

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 December is currently the most expensive (average of $228). 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 April 11, 2026.

When flying from Houston George Bush Intcntl Airport to Louisville, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Houston George Bush Intcntl Airport to Louisville?

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 April 11, 2026.
Peruse reviews from past customers who have flown with United Airlines,American Airlines, andSpirit 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.
United Airlines
7.4
Good
9,567 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,567 reviews
United Airlines
7.4
Good
9,567 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,568 reviews
United Airlines
7.4
Good
9,567 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Spirit Airlines
6.3
Okay
8,611 reviews
United Airlines
7.4
Good
9,567 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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. 3 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.

  • 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 $129. Other airlines that can offer you cheap pricing are American Airlines, from $200, and United Airlines, from $306. Spirit Airlines is 74% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Houston George Bush Intcntl Airport to Louisville one-way?

    $88 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $125 and $143, respectively.

  • 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: Emirates (89%), ANA (84%), Air New Zealand (81%).

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

    Looking at all options, your cheapest flight can be booked for $146. While the most popular route (Houston George Bush Intcntl - Louisville Intl) can be booked for $173 on average, our data indicates $436 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 December is currently the most expensive (average of $228). 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
Elizabethtown
Corydon
Jeffersonville
Bardstown

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Top 3 airlines flying from George Bush Intcntl to Louisville

Discover the top 3 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 April 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$129Average$226FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$200Average$468FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$306Average$549FlexibilityNo cancel feeOn-time69%

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