Houston

$50+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HOU
Dec 12 — Dec 191
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Find cheap flights from St. Louis to Houston with Cheapflights

1. Tell us where you want to go

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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 Monday or Wednesday 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 November 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$150
(Mytrip)

One-way from

$50
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$394
Provider with most accurate pricing for Lambert-St Louis-Houston flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Houston flights.
From Lambert-St Louis to Houston
One-way flight from Lambert-St Louis to Houston
Highest demand for flights based on searches. 5% potential increase in price ($18 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in November 2025

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 November 12, 2025.

This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/253:14 pmSTL - IAH
1 stop7h 16mFrontier
Tue 12/23:13 pmIAH - STL
1 stop19h 01mFrontier
Deal found 11/11$150
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/217:43 pmSTL - IAH
1 stop15h 10mFrontier
Sun 11/236:45 amIAH - STL
1 stop27h 17mFrontier
Deal found 11/11$156
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:43 pmSTL - IAH
1 stop28h 55mFrontier
Sat 12/276:00 amIAH - STL
1 stop27h 40mFrontier
Deal found 11/12$167
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:43 pmSTL - IAH
2 stops25h 10mFrontier
Thu 12/115:02 pmIAH - STL
1 stop16h 45mFrontier
Deal found 11/12$171
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:48 amSTL - IAH
1 stop21h 37mMultiple Airlines
Tue 2/36:45 amIAH - STL
1 stop27h 17mMultiple Airlines
Deal found 11/10$174
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/153:30 pmSTL - IAH
2 stops16h 55mMultiple Airlines
Thu 12/189:34 pmIAH - STL
1 stop22h 08mMultiple Airlines
Deal found 11/11$176
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:04 pmSTL - IAH
1 stop10h 46mFrontier
Wed 12/109:00 amIAH - STL
2 stops13h 33mFrontier
Deal found 11/11$180
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:43 pmSTL - IAH
2 stops20h 09mMultiple Airlines
Sat 12/134:50 pmIAH - STL
1 stop16h 57mMultiple Airlines
Deal found 11/10$181
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:27 pmSTL - IAH
1 stop26h 37mFrontier
Sat 12/279:30 amIAH - STL
2 stops24h 10mFrontier
Deal found 11/11$182
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:27 pmSTL - IAH
1 stop17h 43mMultiple Airlines
Sun 12/286:00 amIAH - STL
2 stops27h 45mMultiple Airlines
Deal found 11/11$189
This Southwest deal was found by Cheapflights users on 11/10. 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.
Wed 12/109:10 amSTL - HOU
Nonstop2h 10mSouthwest
Wed 12/177:00 pmHOU - STL
Nonstop2h 00mSouthwest
Deal found 11/10$277
This Southwest deal was found by Cheapflights users on 11/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/49:20 amSTL - HOU
Nonstop2h 10mSouthwest
Wed 12/103:25 pmHOU - STL
Nonstop2h 00mSouthwest
Deal found 11/11$297

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 November 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

Sat 1/17

7:43 pm-5:21 pm

2 stops21h 38m

Houston George Bush Intcntl

Sun 1/25

10:51 am-12:50 pm

1 stop25h 59m

$164

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 12/4

12:04 pm-10:50 pm

1 stop10h 46m

Houston George Bush Intcntl

Wed 12/10

9:00 am-10:33 pm

2 stops13h 33m

$180

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sat 12/20

4:27 pm-7:04 pm

1 stop26h 37m

Houston George Bush Intcntl

Sat 12/27

9:30 am-9:40 am

2 stops24h 10m

$182

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Wed 12/10

9:10 am-11:20 am

Nonstop2h 10m

Houston Hobby

Wed 12/17

7:00 pm-9:00 pm

Nonstop2h 00m

$277

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 2/10

9:59 am-5:42 pm

1 stop7h 43m

Houston George Bush Intcntl

Tue 2/24

6:31 pm-11:38 pm

1 stop5h 07m

$297

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 12/17

11:10 am-1:35 pm

Nonstop2h 25m

Houston George Bush Intcntl

Sat 1/10

7:55 pm-10:00 pm

Nonstop2h 05m

$297

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 12/4

9:20 am-11:30 am

Nonstop2h 10m

Houston Hobby

Wed 12/10

3:25 pm-5:25 pm

Nonstop2h 00m

$297

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Tue 2/3

10:15 am-3:15 pm

2 stops5h 00m

Houston Hobby

Tue 2/17

1:05 pm-5:55 pm

1 stop4h 50m

$298

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Mon 12/15

9:15 am-11:25 am

Nonstop2h 10m

Houston Hobby

Wed 12/17

11:05 am-4:20 pm

2 stops5h 15m

$312

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 12/15

6:15 am-8:34 am

Nonstop2h 19m

Houston George Bush Intcntl

Thu 12/18

7:50 pm-9:55 pm

Nonstop2h 05m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 33 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 November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Houston flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 November 7, 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, October is the cheapest month in which you can book a flight from St. Louis to Houston (average of $115). Flying from St. Louis to Houston in July is currently the most expensive (average of $191). 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 November 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 31% on your trip compared to booking a flight in the afternoon.

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 Wednesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

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 November 12, 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.

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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 5 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 10m. Fly via Frontier, Southwest, 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 $117, 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 United Airlines - these airlines can fly you to your destination from $127 and $162, respectively. Frontier is priced at 65% 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 $134. On average you can expect to pay $334. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $144.

  • 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, October is the cheapest month in which you can book a flight from St. Louis to Houston (average of $115). Flying from St. Louis to Houston in July is currently the most expensive (average of $191). 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

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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.

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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$117Average$212FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$127Average$270FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$162Average$393FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$167Average$403FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$371FlexibilityNo cancel feeOn-time63%

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