SDF

$86 Find Cheap Flights from Houston to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Houston to Louisville departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Louisville, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$167
Overall average: $497
Spirit Airlines
Tue 2/24Sat 2/28
IAH - SDF • 1 stop
Cheapest non-stop
$324
Typical prices: $378-$417
United Airlines
Wed 4/22Sun 4/26
IAH - SDF • Non-stop
Top airlines
Spirit Airlines
Cheapest • from $167 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
IAH
-
SDF
Cheapest • 4% average savings
IAH
-
SDF
Most popular
Insights
Insights
Insights
Insights
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 68% compared to booking last minute.
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Houston to Louisville

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Houston to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Houston to Louisville

Tue, Feb 24 - Sat, Feb 28
Spirit Airlines Logo
7:21 am - 2:38 pm
IAH
-
SDF
6h 17m
1 stop
Spirit Airlines Logo
12:00 pm - 12:18 am
SDF
-
IAH
13h 18m
1 stop
$167Spirit Airlines
Thu, Feb 26 - Tue, Mar 3
Multiple Airlines Logo
2:41 pm - 8:40 am
IAH
-
SDF
16h 59m
1 stop
Multiple Airlines Logo
3:33 pm - 12:18 am
SDF
-
IAH
9h 45m
1 stop
$171Multiple Airlines
Thu, Feb 26 - Sat, Feb 28
Multiple Airlines Logo
2:41 pm - 8:40 am
IAH
-
SDF
16h 59m
1 stop
Multiple Airlines Logo
12:00 pm - 12:18 am
SDF
-
IAH
13h 18m
1 stop
$179Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
2:41 pm - 8:40 am
IAH
-
SDF
16h 59m
1 stop
Multiple Airlines Logo
1:19 pm - 11:11 am
SDF
-
IAH
22h 52m
1 stop
$180Multiple Airlines
Thu, Feb 26 - Thu, Mar 5
Spirit Airlines Logo
7:21 am - 2:38 pm
IAH
-
SDF
6h 17m
1 stop
Spirit Airlines Logo
3:33 pm - 12:18 am
SDF
-
IAH
9h 45m
1 stop
$185Spirit Airlines
Tue, Feb 24 - Tue, Mar 3
Spirit Airlines Logo
7:21 am - 2:38 pm
IAH
-
SDF
6h 17m
1 stop
Spirit Airlines Logo
3:33 pm - 12:18 am
SDF
-
IAH
9h 45m
1 stop
$188Spirit Airlines
Tue, Feb 24 - Wed, Feb 25
Delta Logo
5:19 pm - 11:58 pm
HOU
-
SDF
5h 39m
1 stop
Delta Logo
5:33 am - 10:01 am
SDF
-
HOU
5h 28m
1 stop
$329Delta
Tue, Feb 24 - Sat, Feb 28
Southwest Logo
9:05 am - 4:50 pm
HOU
-
SDF
6h 45m
2 stops
Southwest Logo
12:45 pm - 2:20 pm
SDF
-
HOU
2h 35mnonstop
$334Southwest
Sat, Feb 21 - Tue, Mar 3
Delta Logo
5:25 am - 11:27 am
HOU
-
SDF
5h 02m
1 stop
Delta Logo
5:33 am - 10:01 am
SDF
-
HOU
5h 28m
1 stop
$339Delta
Wed, Apr 1 - Sun, Apr 5
Southwest Logo
2:55 pm - 6:00 pm
HOU
-
SDF
2h 05mnonstop
Southwest Logo
3:55 pm - 7:50 pm
SDF
-
HOU
4h 55m
1 stop
$344Southwest
Booking Insights

KAYAK's insights & trends for Houston to Louisville flights

Get data-powered insights and trends into flights from Houston to Louisville to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Houston to Louisville flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The absolute cheapest return flight from Houston to Louisville costs $325 on the route between Houston George Bush Intcntl Airport (IAH) and Louisville (SDF). However, over the past month, flights between Houston Hobby Airport (HOU) and Louisville (SDF) were, on average, 4% cheaper than other Houston-Louisville routes. The most popular route is between Houston George Bush Intcntl Airport (IAH) and Louisville (SDF).

What’s the cheapest day of the week to fly from Houston to Louisville?

The average price of all round-trip flights from Houston to Louisville clicked on KAYAK for each day over the last 12 months.

For Houston to Louisville, Saturday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Louisville back to Houston, the best deals are generally found on Friday, with Sunday being the most expensive.

What is the cheapest month to fly from Houston to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston to Louisville is August, where tickets cost $274 (return) on average. On the other hand, the most expensive months are May and February, where the average cost of round-trip tickets is $441 and $433 respectively.

How far in advance should I book a flight from Houston to Louisville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston to Louisville, you should book around 4 weeks before departure, which saves you about 68% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Cheapest flight$86
Flight from Houston George Bush Airport to Louisville

When to book flights from Houston to Louisville

Are your dates flexible? Find out the best times to travel from Houston to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Houston to Louisville

  • What is the cheapest flight from Houston to Louisville?

    In the last 3 days, the lowest price for a flight from Houston to Louisville was $86 for a one-way ticket and $167 for a round-trip.

  • Do I need a passport to fly between Houston and Louisville?

    Yes, you’ll need a passport to travel to Louisville from Houston.

  • Which airports will I be using when flying from Houston to Louisville?

    There are 2 airports in Houston (Houston Hobby and Houston George Bush Intcntl.) and only 1 airport in Louisville (Louisville Intl). The cheapest flights are generally found on the Houston George Bush Airport to Louisville Intl flight route.

  • Which aircraft models fly most regularly from Houston to Louisville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Houston to Louisville?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Houston and Louisville, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Houston to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Houston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Houston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Houston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Houston to Louisville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston to Louisville Intl.
Find which airlines fly direct from Houston to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Houston to Louisville Intl

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

United Airlines, Southwest

United Airlines, Southwest

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Direct returns

Louisville Intl to Houston

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

United Airlines, Southwest

United Airlines, Southwest

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Reviews of the top 4 airlines serving from Houston to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Houston to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Houston to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4267 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

I like flying first class, and United has a nice one

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

They made me pay $40 to check a bag that was listed as free when I bought my ticket. Then before boarding they offered to check any bags free.

The seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

Spirit was on time. They maintained updates and information. The crew was friendly and professional. Because this is a budget friendly airline, they have dispensed with a lot of frills and part of that comes with a price, for example, the seats are not quite as comfortable as others. I am ok with a pay for beverage and snack service as I prefer my own anyway so this was not a concern. I thought overall, having a great flight crew and on time service was definitely worth losing some of the frills from other carriers.

Sadly there was a crew member very rude with my kid and with me.

They canceled the flight and didn't assist in getting a new flight on any airline. I had to spend 10 hrs in the airport after getting a ticket On Delta for twice as much. I've flown Spirit many times and this was my worst experience I've had.

Late taking off. ATC sent us circling around Chicago for almost an hour, after landing taxied for 40 minutes.

We had too many delays for the crew not the plane

Awful!!! Spirit cancelled my flight just 4 hours before departure- with no alternative flights available. I ended up missing a huge family gathering because I wasn’t able to get out. Such An awful experience. And on top of that, all the buckle and dime-ing for bags. I will never book with Spirit EVER

I'd have like to check my bag and not toss my hair products.sears are very uncomfortable. And that even water isn't free really sucks. The ticket was almost $400

Terrible. They cancelled the flight at the last minute after I had checked in at the airport and then told me they could only put me on a flight after 7 days. Pathetic.

Spirit cancelled the flight very late last night, I was on the way to the airport when I found out

Flight was canceled and instead of rescheduling at the gate we had to go out to the ticket counter. Unruly kids kicking the back of my rows chair with staff to inattentive to say something.

Everything you need to know for your flight from Houston to Louisville

Information on your arrival and departure airports