HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Houston

$79+ Cheap flights from St. Louis (STL) to Houston

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HOU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Houston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Houston are usually found in September or May, booked 79 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from St. Louis to Houston

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Houston (HO1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$208
(Mytrip)

One-way from

$79
(Southwest)

Popular in

January

Cheapest in

September

Average price

$356
From Lambert-St Louis to Houston
Search Deals
One-way flight from Lambert-St Louis to Houston
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from St. Louis to Houston

Cheapest flights from St. Louis to Houston
Explore the most affordable flight options available from St. Louis to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/203:30 pmSTL - HOU
1 stop6h 10mDelta
Tue 9/306:00 amHOU - STL
1 stop4h 40mDelta
Deal found 6/12$208
This Cheapflightsfares deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:44 amSTL - IAH
1 stop5h 35mSpirit Airlines
Sun 11/168:46 pmIAH - STL
1 stop11h 03mSpirit Airlines
Deal found 6/12$208
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:00 amSTL - IAH
1 stop6h 19mDelta
Sat 9/207:15 amIAH - STL
1 stop5h 10mDelta
Deal found 6/11$219
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:15 amSTL - IAH
Nonstop2h 19mUnited Airlines
Tue 11/114:45 pmIAH - STL
Nonstop2h 02mUnited Airlines
Deal found 6/11$227
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:30 amSTL - HOU
Nonstop2h 05mSouthwest
Tue 10/76:20 amHOU - STL
1 stop5h 40mSouthwest
Deal found 6/10$232
This Frontier deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/192:52 pmSTL - IAH
1 stop8h 04mFrontier
Sun 7/206:00 amIAH - STL
1 stop7h 34mFrontier
Deal found 6/10$233
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:15 amSTL - HOU
1 stop4h 29mAmerican Airlines
Sun 8/176:30 pmHOU - STL
1 stop4h 33mAmerican Airlines
Deal found 6/11$242
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:44 amSTL - IAH
1 stop9h 06mMultiple Airlines
Wed 10/88:00 amIAH - STL
1 stop26h 07mMultiple Airlines
Deal found 6/10$242
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1010:47 amSTL - HOU
2 stops24h 43mMultiple Airlines
Fri 7/188:03 pmHOU - STL
2 stops18h 36mMultiple Airlines
Deal found 6/10$344
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/306:41 amSTL - HOU
2 stops11h 19mAlaska Airlines
Mon 6/308:23 pmHOU - STL
2 stops22h 12mAlaska Airlines
Deal found 6/9$6,619

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Houston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Houston that are best for you.

Fly from

St. Louis

Fly to

Houston

Route

Depart

Return

Price

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 7/17

10:47 am-7:25 pm

1 stop8h 38m

Houston George Bush Intcntl

Sun 7/20

8:30 pm-9:52 am

1 stop13h 22m

$225

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Tue 8/19

4:40 pm-10:05 pm

1 stop5h 25m

Houston Hobby

Fri 8/22

5:10 am-7:10 am

Nonstop2h 00m

$232

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sat 7/19

2:52 pm-10:56 pm

1 stop8h 04m

Houston George Bush Intcntl

Sun 7/20

6:00 am-1:34 pm

1 stop7h 34m

$233

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 8/14

5:15 am-9:44 am

1 stop4h 29m

Houston Hobby

Sun 8/17

6:30 pm-11:03 pm

1 stop4h 33m

$242

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 8/19

6:06 am-12:40 pm

1 stop6h 34m

Houston George Bush Intcntl

Fri 8/22

4:36 pm-11:14 pm

1 stop6h 38m

$242

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Tue 8/5

9:27 am-3:21 pm

1 stop5h 54m

Houston Hobby

Sat 8/9

6:00 am-12:18 pm

1 stop6h 18m

$248

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 8/1

10:47 am-10:45 am

1 stop23h 58m

Houston George Bush Intcntl

Sat 8/2

6:42 pm-1:34 pm

1 stop18h 52m

$249

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 8/29

11:05 am-1:23 pm

Nonstop2h 18m

Houston George Bush Intcntl

Mon 9/1

7:50 am-10:01 am

Nonstop2h 11m

$292

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 7/16

6:00 am-12:02 pm

1 stop6h 02m

Houston George Bush Intcntl

Wed 7/16

5:33 pm-11:20 pm

1 stop5h 47m

$297

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 7/10

10:47 am-11:30 am

2 stops24h 43m

Houston Hobby

Fri 7/18

8:03 pm-2:39 pm

2 stops18h 36m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 24 results
1
2
3

The best insider tips for St. Louis to Houston flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Houston trip
Airlines
United Airlines

Basic Economy allows a personal item only, no carry-on bags without extra fees.


Economy Plus offers extra legroom seats towards the front of the economy cabin.

Read more about United Airlinesby Harriet Baskas
Southwest

Southwest offers two free checked bags, including oversized items like skis.


Southwest's open seating policy allows passengers to choose any available seat.

Read more about Southwestby Marisa Garcia
Airports
STL

Security screening at STL typically takes 5 to 10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

Read more about STLby Taryn White
IAH

For a quick ride to downtown Houston from IAH, consider using Uber or Lyft, which pick up at Terminals A, B, and C.

Read more about IAHby Evie Carrick
HOU

HOU's arrival roadways are generally congestion-free. Consider using a map app with real-time traffic info for efficient navigation.

Read more about HOUby Scott Laird
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Marisa Garcia

Marisa Garcia

Expert on Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White

Taryn White

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more
Scott Laird

Scott Laird

Expert on HOU

Scott Laird

Scott Laird

Originally from Anchorage, Alaska, Scott is a frequent contributor to Fodor’s Travel Guide, Conde Nast Traveler, TravelAge West, and TravelPulse. He holds a Bachelor of Science in Organizational Management from Alaska Pacific University and a Master of Science in Airline Management from Embry-Riddle Aeronautical University, and has worked in the airline and hotel industries and as a travel consultant.

Read more

Best time to book a flight from St. Louis to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Houston. Price data was last updated on June 9, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Houston, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from St. Louis to Houston?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Houston (average of $230). Flying from St. Louis to Houston in March is currently the most expensive (average of $332). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to HOU?

Find hourly flight availability from St. Louis to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Houston in the evening. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Houston. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Houston flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Houston by month

Plan your trip to Houston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Houston ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston when rainfall is around 3.2 in.

Temperature in Houston by month

Plan your trip to Houston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Houston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Houston. Reviews last updated June 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from St. Louis to Houston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Qatar Airways
7.4
Good
3,584 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Houston?

    For a flight from St. Louis to Houston, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 4 outbound flights to Houston per day. 5 airlines have flights to Houston from Lambert-St Louis on a regular basis.

  • What are the cheapest airlines flying from St. Louis to Houston round-trip?

    Currently priced at $208, Spirit Airlines will fly you from St. Louis to Houston and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and American Airlines - these airlines can fly you to your destination from $232 and $242, respectively. Spirit Airlines is priced at 41% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Houston one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $79. United Airlines flights start at $79 while deals on Spirit Airlines start at $83 one-way.

  • What are the cheapest flights from St. Louis to Houston?

    The cheapest flight price from St. Louis to Houston is $132. On average you can expect to pay $343. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $157.

  • Can I find deals for flights from St. Louis to Houston that include hotel bookings?

    Yes. In addition to deals on St. Louis to Houston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Houston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Houston.

  • Can I find deals for business class flights from St. Louis to Houston?

    Yes. Cheapflights offers flight deals from St. Louis to Houston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Houston (average of $230). Flying from St. Louis to Houston in March is currently the most expensive (average of $332). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Houston

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Hobby flights
St. Louis to Dallas/Fort Worth flights
St. Louis to Hobby flights
Kansas City to George Bush Intcntl flights
Kansas City to Dallas/Fort Worth flights
St. Louis to George Bush Intcntl flights
St. Louis to Love Field flights
Kansas City to Love Field flights
St. Louis to Austin flights
Kansas City to San Antonio flights
Kansas City to Austin flights
St. Louis to San Antonio flights
Springfield to Dallas/Fort Worth flights
Springfield to Hobby flights
Springfield to George Bush Intcntl flights
Columbia to Dallas/Fort Worth flights
St. Louis to El Paso flights
Springfield to Austin flights
Kansas City to Lubbock flights
Kansas City to Brownsville flights
Springfield to San Antonio flights
St. Louis to McAllen flights
St. Louis to Brownsville flights
St. Louis to Amarillo flights
Kansas City to Corpus Christi flights
Kansas City to El Paso flights
Joplin to Dallas/Fort Worth flights
Springfield to Love Field flights
St. Louis to Harlingen flights
Kansas City to McAllen flights
Columbia to Austin flights
Springfield to El Paso flights
St. Louis to Killeen flights
St. Louis to Abilene flights
Columbia to San Antonio flights
St. Louis to Corpus Christi flights
Columbia to Hobby flights
St. Louis to Midland flights
Joplin to George Bush Intcntl flights
Kansas City to Amarillo flights
Kansas City to Harlingen flights
Springfield to Corpus Christi flights
Kansas City to Killeen flights
St. Louis to Lubbock flights
St. Louis to Longview flights
St. Louis to Tyler flights
Springfield to Texarkana flights
St. Louis to Waco flights
Columbia to George Bush Intcntl flights
Joplin to Austin flights

Top 5 airlines flying from St. Louis to Houston

Discover the top 5 airlines that operate flights from St. Louis to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$107Average$173FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$116Average$313FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$196Average$382FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$374FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$201Average$399FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.