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$76+ 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HOU
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Houston are usually found in September or August, booked 51 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 September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$152
(Frontier)

One-way from

$76
(Priceline)

Popular in

January

Cheapest in

September

Average price

$273
Provider with most accurate pricing for Lambert-St Louis-Houston flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Houston flights.
Search Deals
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. 9% potential increase in price ($35 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 September 2025
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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 September 25, 2025.

This Booking.com deal was found by Cheapflights users on 9/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:55 pmSTL - IAH
1 stop27h 44mFrontier
Wed 10/811:36 amIAH - STL
1 stop21h 31mFrontier
Deal found 9/24$149
This Frontier deal was found by Cheapflights users on 9/23. 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.
Fri 10/2411:11 amSTL - IAH
1 stop10h 52mFrontier
Sat 11/18:48 pmIAH - STL
1 stop13h 19mFrontier
Deal found 9/23$152
This Mytrip deal was found by Cheapflights users on 9/24. 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.
Fri 10/37:55 pmSTL - IAH
1 stop15h 14mFrontier
Sun 10/56:05 amIAH - STL
1 stop8h 59mFrontier
Deal found 9/24$153
This Booking.com deal was found by Cheapflights users on 9/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:40 pmSTL - IAH
1 stop13h 57mFrontier
Sun 11/25:00 amIAH - STL
1 stop27h 07mFrontier
Deal found 9/22$154
This Mytrip deal was found by Cheapflights users on 9/25. 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.
Sat 11/18:40 pmSTL - IAH
1 stop27h 59mFrontier
Mon 11/36:00 amIAH - STL
1 stop27h 07mFrontier
Deal found 9/25$163
This Booking.com deal was found by Cheapflights users on 9/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:55 pmSTL - IAH
1 stop15h 14mFrontier
Mon 10/69:08 pmIAH - STL
1 stop11h 59mFrontier
Deal found 9/23$164
This Booking.com deal was found by Cheapflights users on 9/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:47 pmSTL - IAH
1 stop21h 51mFrontier
Sun 10/127:01 pmIAH - STL
1 stop16h 42mFrontier
Deal found 9/24$168
This Frontier deal was found by Cheapflights users on 9/24. 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.
Fri 10/247:52 pmSTL - IAH
2 stops15h 48mFrontier
Fri 10/318:47 pmIAH - STL
1 stop12h 20mFrontier
Deal found 9/24$177
This Priceline deal was found by Cheapflights users on 9/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:00 pmSTL - IAH
1 stop5h 52mFrontier
Sun 10/56:05 amIAH - STL
1 stop8h 59mFrontier
Deal found 9/23$179
This Booking.com deal was found by Cheapflights users on 9/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1711:32 amSTL - IAH
1 stop24h 08mFrontier
Sun 10/196:00 amIAH - STL
1 stop27h 07mFrontier
Deal found 9/22$180
This Frontier deal was found by Cheapflights users on 9/22. 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 11/18:40 pmSTL - IAH
2 stops18h 56mFrontier
Sat 11/88:48 pmIAH - STL
1 stop12h 19mFrontier
Deal found 9/22$181
This Booking.com deal was found by Cheapflights users on 9/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/911:32 amSTL - IAH
1 stop10h 31mFrontier
Fri 10/108:37 pmIAH - STL
1 stop19h 01mFrontier
Deal found 9/24$184

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 September 25, 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

Fri 12/5

6:26 pm-10:30 am

1 stop16h 04m

Houston George Bush Intcntl

Sun 12/7

6:00 am-5:31 pm

1 stop11h 31m

$194

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Mon 10/27

5:30 am-7:35 am

Nonstop2h 05m

Houston Hobby

Tue 10/28

8:05 pm-10:00 pm

Nonstop1h 55m

$317

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 10/30

6:15 am-8:34 am

Nonstop2h 19m

Houston George Bush Intcntl

Tue 11/4

8:20 pm-10:27 pm

Nonstop2h 07m

$317

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Wed 10/22

5:05 am-7:10 am

Nonstop2h 05m

Houston Hobby

Mon 10/27

5:05 am-7:00 am

Nonstop1h 55m

$317

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 10/27

11:20 am-1:45 pm

Nonstop2h 25m

Houston George Bush Intcntl

Tue 10/28

4:45 pm-6:47 pm

Nonstop2h 02m

$317

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 10/16

8:05 am-10:10 am

Nonstop2h 05m

Houston Hobby

Mon 10/20

5:05 am-7:00 am

Nonstop1h 55m

$317

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 11/27

5:25 am-7:35 am

Nonstop2h 10m

Houston Hobby

Mon 12/1

9:40 pm-11:35 pm

Nonstop1h 55m

$317

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Tue 10/14

5:05 am-7:10 am

Nonstop2h 05m

Houston Hobby

Thu 10/16

5:55 am-9:25 am

1 stop3h 30m

$323

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 10/30

6:30 pm-12:10 am

1 stop5h 40m

Houston Hobby

Mon 11/3

5:40 am-7:35 am

Nonstop1h 55m

$327

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sat 11/1

11:20 am-1:45 pm

Nonstop2h 25m

Houston George Bush Intcntl

Mon 11/10

8:20 pm-10:22 pm

Nonstop2h 02m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 39 results
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Compare providers for flights from St. Louis to Houston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Houston in September.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Houston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Houston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Houston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Houston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Houston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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
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
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 September 19, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Houston, you should look to book at least 51 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 $330). 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 September 25, 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 9% 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 Tuesday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 25, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from St. Louis to Houston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,045 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,162 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 3 outbound flights to Houston per day. 5 airlines have flights to Houston from Lambert-St Louis on a regular basis.

  • How long is the flight from St. Louis to Houston?

    There are many flights that can get you from St. Louis to Houston in 2h 05m. Fly via Southwest, United Airlines, or Delta to get the fastest option. St. Louis and Houston are separated by a distance of 688 mi. This flight may include one or multiple stops.

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

    Currently priced at $112, Frontier will fly you from St. Louis to Houston and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and American Airlines - these airlines can fly you to your destination from $127 and $158, respectively. Frontier is priced at 67% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest flight price from St. Louis to Houston is $147. On average you can expect to pay $360. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $184.

  • 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 $330). 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

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Alternative routes for St. Louis to Houston

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$203FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$127Average$270FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$158Average$410FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$372FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$186Average$395FlexibilityNo cancel feeOn-time69%

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