HOU - STL

$139 Find Cheap Flights from Houston Hobby Airport 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 Hobby to St. Louis departing on 2/25. 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
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$297
Overall average: $347
Delta
Tue 2/17Tue 2/24
HOU - STL • 1 stop
Cheapest non-stop
$297
Typical prices: $323-$542
Southwest
Thu 3/12Tue 3/17
HOU - STL • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Use the Hobby Airport app for parking and navigation.
Take the MetroLink Red Line from STL to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Delta
Cheapest • from $297 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 27% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Hobby to St. Louis (HOU-STL)

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

Tue, Feb 17 - Tue, Feb 24
Delta Logo
5:19 pm - 11:36 pm
HOU
-
STL
6h 17m
1 stop
Delta Logo
6:00 am - 12:20 pm
STL
-
HOU
6h 20m
1 stop
$297Delta
Wed, May 13 - Sat, May 16
Southwest Logo
3:40 pm - 8:00 pm
HOU
-
STL
4h 20m
1 stop
Southwest Logo
5:20 pm - 7:30 pm
STL
-
HOU
2h 10mnonstop
$303Southwest
Thu, Mar 12 - Tue, Mar 17
Southwest Logo
8:00 am - 12:50 pm
HOU
-
STL
4h 50m
1 stop
Southwest Logo
5:15 pm - 7:35 pm
STL
-
HOU
2h 20mnonstop
$307Southwest
Thu, Mar 12 - Tue, Mar 17
Southwest Logo
10:05 pm - 12:05 am
HOU
-
STL
2h 00mnonstop
Southwest Logo
2:25 pm - 8:35 pm
STL
-
HOU
6h 10m
2 stops
$312Southwest
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
12:18 pm - 5:13 pm
HOU
-
STL
4h 55m
1 stop
American Airlines Logo
9:35 am - 3:51 pm
STL
-
HOU
6h 16m
1 stop
$317American Airlines
Thu, Mar 12 - Tue, Mar 17
Southwest Logo
6:00 am - 9:35 am
HOU
-
STL
3h 35m
1 stop
Southwest Logo
2:25 pm - 8:35 pm
STL
-
HOU
6h 10m
2 stops
$322Southwest
Wed, Feb 25 - Wed, Mar 4
Southwest Logo
12:55 pm - 5:10 pm
HOU
-
STL
4h 15m
1 stop
Southwest Logo
6:00 am - 8:20 am
STL
-
HOU
2h 20mnonstop
$323Southwest
Thu, Mar 26 - Sat, Mar 28
Southwest Logo
7:40 am - 9:35 am
HOU
-
STL
1h 55mnonstop
Southwest Logo
8:25 am - 1:45 pm
STL
-
HOU
5h 20m
2 stops
$328Southwest
Wed, Feb 25 - Wed, Mar 4
Southwest Logo
12:55 pm - 5:10 pm
HOU
-
STL
4h 15m
1 stop
Southwest Logo
8:55 am - 3:15 pm
STL
-
HOU
6h 20m
1 stop
$332Southwest
Thu, Mar 26 - Sat, Mar 28
Southwest Logo
10:15 am - 2:30 pm
HOU
-
STL
4h 15m
1 stop
Southwest Logo
8:25 am - 1:45 pm
STL
-
HOU
5h 20m
2 stops
$333Southwest
Booking Insights

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

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

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

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

If you are looking for a flight deal from Houston Hobby Airport to St. Louis, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from St. Louis, Friday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Houston Hobby Airport 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 Hobby Airport 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 Hobby Airport 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 $395 respectively.

Can I save money by flying with a layover from Houston Hobby Airport to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $385, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Houston Hobby Airport 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 Hobby Airport 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 Hobby Airport to St. Louis, you should book around 4 weeks before departure, which saves you about 43% 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 Hobby 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.
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL and HOU

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.

Good to know

Low seasonDecember
Cheapest flight$139
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly with an average 6% increase in price.
Flight from Houston Hobby Airport to St. Louis

When to book flights from Hobby to St. Louis

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

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

    In the last 3 days, the lowest price for a flight from Houston Hobby Airport to St. Louis was $139 for a one-way ticket and $297 for a round-trip.

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

    No

  • Which airlines offer Wi-Fi service onboard planes from Houston Hobby Airport to St. Louis?

    Delta, American Airlines, and JetBlue offer inflight Wi-Fi service on the Houston Hobby Airport to St. Louis flight route.

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

    The Airbus A319 is the aircraft model that flies most regularly on the Houston Hobby Airport to St. Louis flight route.

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

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

  • On which days can I fly direct from Houston Hobby Airport to St. Louis?

    There are nonstop flights from Houston Hobby Airport to St. Louis on a daily basis.

  • Which is the best airline for flights from Houston to St. Louis, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Houston to St. Louis are Southwest and United Airlines. With an average price for the route of $362 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $377 and an overall rating of 7.4.

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

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston Hobby Airport 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 Hobby Airport 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 Hobby Airport 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 Hobby Airport with another airline. Booking your flights between Houston Hobby Airport and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston Hobby Airport 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 Hobby Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Houston Hobby Airport to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $223 or less one-way and $317 or less round-trip.

Prefer to fly direct from Houston Hobby Airport 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 Hobby to Lambert-St Louis.
Find which airlines fly direct from Houston Hobby Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Houston Hobby to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to Houston Hobby

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Reviews of the top 4 airlines serving from Hobby 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 Hobby 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.
8.0
SouthwestOverall score based on 4268 reviews
8.6Crew
8.1Boarding
7.5Entertainment
7.0Food
8.0Comfort
Airline reviews

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

10.0 ExcellentAmy, Jan 2026
DEN - STL
Read more Southwest reviews

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

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

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

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.

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.

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.

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.

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

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.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

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

Information on your arrival and departure airports