SDF

$57 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 1/20. 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
$168
Overall average: $358
Multiple Airlines
Tue 1/13Tue 1/20
IAH - SDF • 1 stop
Cheapest non-stop
$313
Typical prices: $306-$389
United Airlines
Tue 1/13Tue 1/20
IAH - SDF • Non-stop
Top airlines
Spirit Airlines
Cheapest • from $209 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
IAH-SDF
Cheapest • 14% 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 67% 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, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
8:16 pm - 1:00 pm
IAH
-
SDF
15h 44m1 stop
Multiple Airlines Logo
3:36 pm - 11:58 pm
SDF
-
IAH
9h 22m1 stop
$168Multiple Airlines
Wed, Jan 7 - Thu, Jan 15
Spirit Airlines Logo
10:08 am - 11:59 pm
IAH
-
SDF
12h 51m1 stop
Spirit Airlines Logo
3:36 pm - 11:58 pm
SDF
-
IAH
9h 22m1 stop
$173Spirit Airlines
Wed, Jan 7 - Mon, Jan 12
Spirit Airlines Logo
10:08 am - 11:59 pm
IAH
-
SDF
12h 51m1 stop
Spirit Airlines Logo
1:55 pm - 11:34 pm
SDF
-
IAH
10h 39m1 stop
$176Spirit Airlines
Wed, Jan 7 - Wed, Jan 14
Multiple Airlines Logo
10:08 am - 11:59 pm
IAH
-
SDF
12h 51m1 stop
Multiple Airlines Logo
1:55 pm - 6:58 pm
SDF
-
IAH
30h 03m1 stop
$180Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Spirit Airlines Logo
4:35 pm - 1:00 pm
IAH
-
SDF
19h 25m2 stops
Spirit Airlines Logo
3:36 pm - 11:58 pm
SDF
-
IAH
9h 22m1 stop
$184Spirit Airlines
Wed, Jan 7 - Thu, Jan 8
Spirit Airlines Logo
10:08 am - 11:59 pm
IAH
-
SDF
12h 51m1 stop
Spirit Airlines Logo
7:00 am - 8:23 pm
SDF
-
IAH
14h 23m1 stop
$185Spirit Airlines
Tue, Jan 13 - Tue, Jan 20
Delta Logo
5:04 pm - 11:55 pm
HOU
-
SDF
5h 51m1 stop
Delta Logo
5:35 am - 10:21 am
SDF
-
HOU
5h 46m1 stop
$333Delta
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
10:35 am - 6:30 pm
HOU
-
SDF
6h 55m2 stops
American Airlines Logo
7:40 am - 12:09 pm
SDF
-
HOU
5h 29m1 stop
$338American Airlines
Tue, Apr 7 - Tue, Apr 21
Southwest Logo
2:50 pm - 6:00 pm
HOU
-
SDF
2h 10mnonstop
Southwest Logo
12:10 pm - 1:45 pm
SDF
-
HOU
2h 35mnonstop
$339Southwest
Wed, Jan 7 - Thu, Jan 8
Southwest Logo
10:00 am - 4:10 pm
HOU
-
SDF
5h 10m1 stop
Southwest Logo
6:30 pm - 10:40 pm
SDF
-
HOU
5h 10m1 stop
$343Southwest
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 cheapest return flight from Houston to Louisville costs $329 on the route between Houston George Bush Intcntl Airport (IAH) and Louisville (SDF). Over the past month, this route was, on average, 14% cheaper than other Houston-Louisville routes. It is also the most popular route.

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 $438 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 67% 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$57
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 $57 for a one-way ticket and $168 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

United Airlines, Southwest

United Airlines, Southwest

Wednesday

United Airlines

United Airlines

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

United Airlines

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 5 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.
7.9
SouthwestOverall score based on 4250 reviews
7.5Entertainment
8.6Crew
8.1Boarding
8.0Comfort
7.0Food
Airline reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

2.0 MediocreRobert, Dec 2025
LAS - TPA
Read more Southwest reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

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.

Overall it was good. I missed my connection but I was put on another flight.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Attendants were pleasant and the flight was smooth and relaxed.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

Things were delayed a little. But that didn’t affect my plans. It was fine. I was surprised it was so full thanksgiving day. The crew were friendly and professional.

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

I have a gluten allergy so did have any food

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

The only thing to like was that we eventually got to our destination

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

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.

Honestly horrible. The plane on the way back was delayed 6 times with no explanation on why. When I asked for a refund or some money back because I had to miss a day of work because of the desk, they told me no. Because of how poorly it was handled I will most likely never take spirit again

I hope you continue to be one of the great company

I stopped flying spirit as much because they are crooks and thieves. It's not like other airlines where you can at least get credits they just take your money.

Always comes in handy when I want a quick weekend getaway.

The entire staff from check in agents to flight attendants were pleasant and professional. Would suggest a complimentary water.

Spirit is low fare air line. Food also cost you. No free food.

Everyone was kind for the most part. I did travel with children and paid for seats and even then it was not as suitable. I tried calling their customer service prior to check in and I was told they couldn't help me because I didn't purchase my tickets with them.

I think the staff was nice. They took time to explain safety protocols. Boarding was great. They started early and our flight left a little early which was convenient. Having free games to play would have been better

Just total easy flight experience!! What could you do better..? Hmmm..? There was nothing I can remember. Spirit was a far more comfortable and easy process than American, United & Delta. I'll always look for Spirit and I've told a few people about, since flying this past trip!! I'm a SPIRIT FAN!! Thank You, SPIRIT AIRLINES!! Very, VERY well done, 100%!! See you...SOON!! -Best, Linda R.

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

Information on your arrival and departure airports