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$86+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HOU
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Houston are usually found in May or September, 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 April 17, 2025.

Round-trip from

$179
(Mytrip)

One-way from

$86
(Mytrip)

Popular in

January

Cheapest in

May

Average price

$375
From Lambert-St Louis to Houston
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One-way flight from Lambert-St Louis to Houston
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Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This CheapOair deal was found by Cheapflights users on 4/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:41 pmSTL - IAH
1 stop17h 04mFrontier
Tue 4/299:01 pmIAH - STL
1 stop27h 03mFrontier
Deal found 4/17$181
This Mytrip deal was found by Cheapflights users on 4/17. 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 5/1510:10 amSTL - IAH
1 stop21h 43mMultiple Airlines
Mon 5/198:24 amIAH - STL
2 stops10h 17mMultiple Airlines
Deal found 4/17$219
This Southwest deal was found by Cheapflights users on 4/16. 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 5/149:55 amSTL - HOU
Nonstop2h 10mSouthwest
Wed 5/215:25 amHOU - STL
Nonstop2h 00mSouthwest
Deal found 4/16$271
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Sun 5/2510:10 amSTL - IAH
1 stop13h 57mSpirit Airlines
Sat 5/315:53 pmIAH - STL
2 stops15h 22mSpirit Airlines
Deal found 4/17$302
This Delta deal was found by Cheapflights users on 4/17. 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.
Thu 5/81:09 pmSTL - HOU
1 stop4h 48mDelta
Sat 5/106:42 pmHOU - STL
1 stop4h 56mDelta
Deal found 4/17$308
This Delta deal was found by Cheapflights users on 4/17. 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.
Thu 5/81:09 pmSTL - IAH
1 stop4h 36mDelta
Sun 5/115:30 amIAH - STL
1 stop7h 49mDelta
Deal found 4/17$308
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 5/146:00 amSTL - IAH
Nonstop2h 15mUnited Airlines
Wed 5/216:25 pmIAH - STL
Nonstop2h 07mUnited Airlines
Deal found 4/17$351
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Fri 9/54:17 pmSTL - HOU
1 stop3h 58mAmerican Airlines
Sat 9/136:41 pmHOU - STL
1 stop3h 46mAmerican Airlines
Deal found 4/17$359
This KAYAK deal was found by Cheapflights users on 4/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/69:29 amSTL - IAH
1 stop4h 51mAmerican Airlines
Fri 5/96:29 pmIAH - STL
1 stop4h 16mAmerican Airlines
Deal found 4/17$460
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
Thu 8/283:17 pmSTL - IAH
2 stops25h 38mAlaska Airlines
Mon 9/15:55 pmIAH - STL
2 stops30h 04mAlaska Airlines
Deal found 4/16$555

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 April 17, 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 5/10

5:45 pm-10:37 am

1 stop16h 52m

Houston George Bush Intcntl

Sat 5/17

9:05 pm-12:06 am

1 stop27h 01m

$181

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 5/15

10:10 am-7:53 am

1 stop21h 43m

Houston George Bush Intcntl

Mon 5/19

8:24 am-6:41 pm

2 stops10h 17m

$219

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Wed 5/14

9:55 am-12:05 pm

Nonstop2h 10m

Houston Hobby

Wed 5/21

5:25 am-7:25 am

Nonstop2h 00m

$271

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sun 5/25

10:10 am-12:07 am

1 stop13h 57m

Houston George Bush Intcntl

Sat 5/31

5:53 pm-9:15 am

2 stops15h 22m

$302

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 5/8

1:09 pm-5:57 pm

1 stop4h 48m

Houston Hobby

Sat 5/10

6:42 pm-11:38 pm

1 stop4h 56m

$308

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 5/8

1:09 pm-5:45 pm

1 stop4h 36m

Houston George Bush Intcntl

Sun 5/11

5:30 am-1:19 pm

1 stop7h 49m

$308

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 5/14

6:00 am-8:15 am

Nonstop2h 15m

Houston George Bush Intcntl

Wed 5/21

6:25 pm-8:32 pm

Nonstop2h 07m

$351

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Mon 5/5

4:52 pm-11:58 pm

1 stop7h 06m

Houston Hobby

Thu 5/8

5:00 am-9:54 am

1 stop4h 54m

$381

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 5/6

9:29 am-2:20 pm

1 stop4h 51m

Houston George Bush Intcntl

Fri 5/9

6:29 pm-10:45 pm

1 stop4h 16m

$460

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 8/28

3:17 pm-4:55 pm

2 stops25h 38m

Houston George Bush Intcntl

Mon 9/1

5:55 pm-11:59 pm

2 stops30h 04m

$555

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 24 results
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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

Expect security screening to take 5-10 minutes during off-peak times at STL. Check real-time wait times online before heading to the airport.

Read more about STLby Taryn White
IAH

For a quick trip to downtown Houston from IAH, consider Uber or Lyft. It's faster than public transport, taking around 25 minutes by car.

Read more about IAHby Evie Carrick
HOU

HOU's arrival roadways are generally congestion-free. Consider using a map app for real-time traffic updates when navigating surface streets.

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 April 11, 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 $334). 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 April 17, 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 15% 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 April 17, 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
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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. 4 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 $179, 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 Frontier and Southwest - these airlines can fly you to your destination from $181 and $271, respectively. Spirit Airlines is priced at 49% 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $86. Frontier flights start at $96 while deals on Southwest start at $136 one-way.

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

    The cheapest flight price from St. Louis to Houston is $152. On average you can expect to pay $310. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $224.

  • 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 $334). 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 4 airlines flying from St. Louis to Houston

Discover the top 4 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$164FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$398FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$376FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$221Average$393FlexibilityNo cancel feeOn-time69%

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