STL

$63 Find Cheap Flights from Houston to St. Louis

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 St. Louis 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to St. Louis, 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 St. Louis, 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
$130
Overall average: $370
Multiple Airlines
Tue 1/6Sun 1/11
IAH - STL • 1 stop
Cheapest non-stop
$313
Typical prices: $377-$501
Southwest
Sat 1/17Mon 1/19
HOU - STL • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Southwest offers two free checked bags for extra luggage.
Use MetroLink for quick access to downtown St. Louis.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $158 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
HOU-STL
Cheapest • 17% average savings
HOU-STL
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 42% 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 St. Louis!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Houston to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Houston to St. Louis 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 St. Louis

Tue, Jan 6 - Sun, Jan 11
Multiple Airlines Logo
8:13 pm - 10:33 pm
IAH
-
STL
26h 20m1 stop
Multiple Airlines Logo
5:11 pm - 11:11 am
STL
-
IAH
18h 00m1 stop
$130Multiple Airlines
Wed, Jan 14 - Wed, Jan 21
Frontier Logo
7:35 am - 2:48 pm
IAH
-
STL
7h 13m1 stop
Frontier Logo
3:46 pm - 11:39 pm
STL
-
IAH
7h 53m1 stop
$132Frontier
Wed, Jan 7 - Mon, Jan 12
Frontier Logo
8:13 pm - 10:33 pm
IAH
-
STL
26h 20m1 stop
Frontier Logo
5:11 pm - 6:39 pm
STL
-
IAH
25h 28m1 stop
$133Frontier
Wed, Jan 7 - Sun, Jan 11
Frontier Logo
8:13 pm - 10:33 pm
IAH
-
STL
26h 20m1 stop
Frontier Logo
5:11 pm - 10:01 am
STL
-
IAH
16h 50m1 stop
$134Frontier
Tue, Jan 20 - Sun, Jan 25
Multiple Airlines Logo
4:15 pm - 6:51 am
IAH
-
STL
14h 36m1 stop
Multiple Airlines Logo
5:42 pm - 9:00 am
STL
-
IAH
15h 18m1 stop
$136Multiple Airlines
Tue, Jan 20 - Fri, Jan 23
Multiple Airlines Logo
4:15 pm - 6:51 am
IAH
-
STL
14h 36m1 stop
Multiple Airlines Logo
7:39 pm - 3:13 pm
STL
-
IAH
19h 34m1 stop
$141Multiple Airlines
Sat, Jan 17 - Mon, Jan 19
Multiple Airlines Logo
8:35 am - 2:48 pm
IAH
-
STL
6h 13m1 stop
Multiple Airlines Logo
8:32 pm - 3:19 pm
STL
-
IAH
18h 47m1 stop
$142Multiple Airlines
Sat, Jan 17 - Mon, Jan 19
Southwest Logo
6:05 pm - 8:05 pm
HOU
-
STL
2h 00mnonstop
Southwest Logo
5:00 pm - 7:15 pm
STL
-
HOU
2h 15mnonstop
$313Southwest
Wed, Jan 7 - Sat, Jan 10
Southwest Logo
12:55 pm - 5:10 pm
HOU
-
STL
4h 15m1 stop
Southwest Logo
6:55 am - 9:15 am
STL
-
HOU
2h 20mnonstop
$319Southwest
Thu, Jan 15 - Mon, Jan 19
Delta Logo
5:45 am - 11:05 am
HOU
-
STL
5h 20m1 stop
Delta Logo
3:45 pm - 10:33 pm
STL
-
HOU
6h 48m1 stop
$333Delta
Booking Insights

KAYAK's insights & trends for Houston to St. Louis flights

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

What is the cheapest Houston to St. Louis flight route?

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

The cheapest return flight from Houston to St. Louis costs $248 on the route between Houston Hobby Airport (HOU) and St. Louis (STL). Over the past month, this route was, on average, 17% cheaper than other Houston-St. Louis routes. It is also the most popular route.

What’s the cheapest day of the week to fly from Houston to St. Louis?

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

When flying from Houston to St. Louis, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Houston, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

What is the cheapest month to fly from Houston to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston to St. Louis, 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 St. Louis is September, where tickets cost $249 (return) on average. On the other hand, the most expensive months are November and January, where the average cost of round-trip tickets is $433 and $401 respectively.

How far in advance should I book a flight from Houston to St. Louis?

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 St. Louis, 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 St. Louis, you should book around 4 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Expert advice

Expert advice for your flight from Houston to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
IAH

IAH's free Wi-Fi and numerous lounges, including United Clubs, make it a convenient choice for business travelers.

HOU

HOU is compact and easy to navigate, with quick check-in and baggage claim. Ideal for Southwest flyers with its efficient layout.

STL

Use MetroLink for quick access to downtown St. Louis. It's convenient and avoids rush hour traffic.

Our travel experts
John Walton

John Walton

Expert on IAH

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL and HOU

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more

Good to know

Cheapest flight$63
Flight from Houston George Bush Airport to St. Louis

When to book flights from Houston to St. Louis

Are your dates flexible? Find out the best times to travel from Houston to St. Louis 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 St. Louis

  • What is the cheapest flight from Houston to St. Louis?

    In the last 3 days, the lowest price for a flight from Houston to St. Louis was $63 for a one-way ticket and $130 for a round-trip.

  • Do I need a passport to fly between Houston and St. Louis?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Houston and on arrival in St. Louis.

  • Which airports will I be using when flying from Houston to St. Louis?

    When flying out of Houston you will be using one of these airports: Houston Hobby or Houston George Bush Intcntl. You will be landing at Lambert-St Louis.

  • Which aircraft models fly most regularly from Houston to St. Louis?

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

  • Which airline alliances offer flights from Houston to St. Louis?

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

  • How does KAYAK find such low prices on flights from Houston to St. Louis?

    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 St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis 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 St. Louis?

    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 St. Louis 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 St. Louis?

    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 St. Louis 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 St. Louis?

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

Direct departures

Houston to Lambert-St Louis

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest, United Airlines

Southwest, 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

Lambert-St Louis to Houston

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest, United Airlines

Southwest, 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 4 airlines serving from Houston to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Houston to St. Louis. 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 St. Louis? 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
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

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

10.0 ExcellentAnonymous, Dec 2025
DAL - LAX
Read more Southwest reviews

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

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

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Southwest's seats are the least comfortable I have ever sat in.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

It was one and half hour late... Not sure if any other experience matters.

For my birthday trip this was my second time ever flying, this trip was the best.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

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.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

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.

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

Not clean and was told I would get a great seat and it was not great at all

Flight got delayed for 5 hours no good explanation was offered ;(

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Everything you need to know for your flight from Houston to St. Louis

Information on your arrival and departure airports