$129 Cheap Flights from St. Louis (STL) to Houston (HOU)

View $129 flight on Wed, May 20, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Houston William Hobby Airport (HOU)

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

Prices were available within the past 7 days and start at $129 for one-way flights and $251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Apr 21 - Tue, Apr 28
STL
St. Louis
HOU
Houston
$251 Roundtrip, found 6 days ago
$251
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Apr 21 from St. Louis to Houston, returning Tue, Apr 28, priced at $251 found 6 days ago
Southwest Airlines
Wed, Apr 22 - Wed, Apr 29
STL
St. Louis
HOU
Houston
$257 Roundtrip, found 17 hours ago
$257
Roundtrip
found 17 hours ago
Select Southwest Airlines flight, departing Wed, Apr 22 from St. Louis to Houston, returning Wed, Apr 29, priced at $257 found 17 hours ago

Alternative airports near Houston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to George Bush Intercontinental IAH. Cheapest option available. Average driving time to city center is 24 minutes. Flights from $342
IAH
George Bush Intercontinental
Cheapest
Average driving time to city center24 min
Flights from $342

Find the cheapest month to fly from St. Louis (STL) to Houston (HOU)

November is typically the cheapest month to fly

From $115 - $378 per traveler.

Frequently asked questions

How much does a flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) cost?
You can find cheap one-way flights from $129 and cheap return flights from $251 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) with Expedia. One-way flights generally range between $183 and $576, and roundtrip flights usually range from $314 to $909. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
The cheapest month to fly from STL to HOU is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
Enter STL to HOU and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
United is one of the cheapest airlines offering nonstop flights from St. Louis, MO (STL) to Houston, TX (HOU), with round-trip tickets starting from around $480. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
The best airline to fly with from St. Louis, MO (STL) to Houston, TX (HOU) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. WN also offers the most daily flights from STL to HOU, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
There are approximately 4 nonstop flights per day from Lambert-St. Louis Intl. (STL) to William P. Hobby (HOU). For more options, look at flights that include layovers.
What is the earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
The earliest flight from Lambert-St. Louis International Airport (STL) to William P. Hobby Airport (HOU) usually departs at around 5:00 AM. American Airlines operates this seasonal service, which can help you maximize your time in Houston. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
The most popular departure times for flights from St. Louis, MO (STL) to Houston, TX (HOU) are in the early morning, from 6am to 9am. About 26% of passengers prefer this time window. Many major carriers, including American Airlines, Southwest Airlines, and United Airlines, offer flights during this window. This timing works well because it allows you to arrive in Houston early and start your day.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
A nonstop flight from STL to HOU typically takes around 2 hours 20 minutes, covering approximately 688 miles. Connecting flights on this route usually add 4 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
You can fly first class between STL and HOU. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How much is a business class flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
A non-stop, one-way business class flight from St. Louis (STL) to Houston (HOU) is usually around $396 - $546. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Houston from Lambert-St. Louis Intl. (STL)?
When traveling from Lambert-St. Louis Intl. (STL) to Houston, you can fly into William P. Hobby (HOU) and George Bush Intercontinental (IAH). Some flights may connect through major hubs like Clinton National Airport (LIT), Nashville Intl. (BNA), Tulsa Intl. (TUL) before reaching Houston. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) Houston Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Houston, TX (HOU-William P. Hobby) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
William P. Hobby
Airlines serving
American Airlines, Delta, Southwest Airlines
Roundtrip price
$257
Distance
687 mi
Average flight time
2 hours 13 mins

Book with confidence

St. Louis to Houston Flights

The cheapest times to fly from St. Louis to Houston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Houston are during the month of April. You can find some of the cheapest flights from St. Louis to Houston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Houston

Sunday is one of the best days to book for cheap flights from St. Louis to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Houston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Houston in 2026. You can also book with separate airlines for your outbound and return journeys, from $129 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Houston Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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