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St. Louis

$89+ Cheap flights from Houston to St. Louis (STL)

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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — STL
abr. 2 — abr. 91
mié. 4/2
mié. 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Houston to Lambert-St Louis are usually found in April or September, booked 47 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Houston to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) to St. Louis (STL). 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 marzo 28, 2025.

Round-trip from

$197
(Southwest)

One-way from

$89
(Southwest)

Popular in

January

Cheapest in

April

Average price

$367
From Houston to Lambert-St Louis
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One-way flight from Houston to Lambert-St Louis
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Highest demand for flights based on searches. 7% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Houston to St. Louis

Cheapest flights from Houston to St. Louis
Explore the most affordable flight options available from Houston to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 28, 2025.

This Southwest deal was found by Cheapflights users on 3/27. 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.
vie. 5/95:05 amHOU - STL
Nonstop2h 00mSouthwest
lun. 5/129:40 pmSTL - HOU
Nonstop2h 05mSouthwest
Deal found 3/27$197
This Delta deal was found by Cheapflights users on 3/27. 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.
mar. 4/229:37 amIAH - STL
1 stop6h 49mDelta
mié. 4/234:11 pmSTL - IAH
1 stop7h 45mDelta
Deal found 3/27$197
This Frontier deal was found by Cheapflights users on 3/27. 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.
vie. 5/94:43 pmIAH - STL
1 stop7h 31mFrontier
dom. 5/119:55 pmSTL - IAH
1 stop13h 23mFrontier
Deal found 3/27$198
This United Airlines deal was found by Cheapflights users on 3/26. 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.
lun. 5/57:55 pmIAH - STL
Nonstop2h 08mUnited Airlines
mié. 5/145:29 pmSTL - IAH
1 stop5h 29mUnited Airlines
Deal found 3/26$216
This Delta deal was found by Cheapflights users on 3/27. 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.
mié. 4/236:45 pmHOU - STL
1 stop4h 51mDelta
vie. 4/255:32 pmSTL - HOU
1 stop5h 36mDelta
Deal found 3/27$217
This Mytrip deal was found by Cheapflights users on 3/26. 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.
lun. 5/52:24 pmIAH - STL
2 stops28h 17mMultiple Airlines
mié. 5/1412:15 pmSTL - IAH
2 stops11h 33mMultiple Airlines
Deal found 3/26$266
This Mytrip deal was found by Cheapflights users on 3/27. 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.
vie. 5/98:44 pmIAH - STL
1 stop12h 31mSpirit Airlines
dom. 5/1110:10 amSTL - IAH
3 stops33h 24mSpirit Airlines
Deal found 3/27$275
This American Airlines deal was found by Cheapflights users on 3/27. 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.
jue. 4/1010:18 amHOU - STL
1 stop6h 18mAmerican Airlines
jue. 4/175:26 amSTL - HOU
1 stop8h 13mAmerican Airlines
Deal found 3/27$350
This American Airlines deal was found by Cheapflights users on 3/27. 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.
mié. 9/35:02 amIAH - STL
1 stop3h 48mAmerican Airlines
vie. 9/57:34 amSTL - IAH
1 stop5h 14mAmerican Airlines
Deal found 3/27$370

Cheapflights Fare Finder

Customize your flight search to find flights from Houston to St. Louis 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 marzo 28, 2025.
Use the filters below to find and compare flights from Houston to St. Louis that are best for you.

Fly from

Houston

Fly to

St. Louis

Route

Depart

Return

Price

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

vie. 5/9

5:05 am-7:05 am

Nonstop2h 00m

Lambert-St Louis

lun. 5/12

9:40 pm-11:45 pm

Nonstop2h 05m

$197

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mar. 4/22

9:37 am-4:26 pm

1 stop6h 49m

Lambert-St Louis

mié. 4/23

4:11 pm-11:56 pm

1 stop7h 45m

$197

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

vie. 5/9

4:43 pm-12:14 am

1 stop7h 31m

Lambert-St Louis

dom. 5/11

9:55 pm-11:18 am

1 stop13h 23m

$198

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

lun. 5/5

7:55 pm-10:03 pm

Nonstop2h 08m

Lambert-St Louis

mié. 5/14

5:29 pm-10:58 pm

1 stop5h 29m

$216

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

mié. 4/23

6:45 pm-11:36 pm

1 stop4h 51m

Lambert-St Louis

vie. 4/25

5:32 pm-11:08 pm

1 stop5h 36m

$217

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

vie. 5/9

8:24 am-6:41 pm

2 stops10h 17m

Lambert-St Louis

dom. 5/11

10:10 am-12:07 am

1 stop13h 57m

$261

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

vie. 5/9

8:44 pm-9:15 am

1 stop12h 31m

Lambert-St Louis

dom. 5/11

10:10 am-7:34 pm

3 stops33h 24m

$275

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

jue. 4/10

10:18 am-4:36 pm

1 stop6h 18m

Lambert-St Louis

jue. 4/17

5:26 am-1:39 pm

1 stop8h 13m

$350

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mié. 9/3

5:02 am-8:50 am

1 stop3h 48m

Lambert-St Louis

vie. 9/5

7:34 am-12:48 pm

1 stop5h 14m

$370

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mar. 4/22

9:08 am-11:59 pm

2 stops14h 51m

Lambert-St Louis

mié. 4/23

6:30 am-10:41 pm

2 stops16h 11m

$703

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 23 results
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The best insider tips for Houston to St. Louis 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 Houston to St. Louis trip
Airlines
United Airlines

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


Economy Plus offers extra legroom seats at 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.


Enjoy free in-flight messaging and entertainment streamed to your device.

Read more about Southwestby Marisa Garcia
Airports
IAH

Check security wait times on IAH's website to avoid delays and ensure a smooth departure.

Read more about IAHby Evie Carrick
HOU

HOU's compact terminal allows travelers to arrive closer to departure time, making it convenient for quick check-ins.

Read more about HOUby Scott Laird
STL

Use the MetroLink for a convenient and economical way to reach downtown St. Louis from STL.

Read more about STLby Taryn White
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 Houston to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Houston 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 Houston to St. Louis

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

Use this chart to determine the optimal time to book a round-trip flight from Houston to St. Louis. Price data was last updated on March 21, 2025.

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Houston to St. Louis (average of $311). Flying from Houston to St. Louis in March is currently the most expensive (average of $356). 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 HOU to STL?

Find hourly flight availability from Houston to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 28, 2025.

One of the essential ways to save on airfare from Houston to St. Louis is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 4% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Houston to St. Louis. Price data was last updated on May 26, 2024.

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

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated marzo 28, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Houston to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Houston to St. Louis Travel Guide

St. Louis Lambert International Airport is located 14 miles from the downtown district in St. Louis. You’ll sometimes see it listed as Lambert Field. This airport is the busiest and the biggest one in the state of Missouri. There is a second airport in the city or located close to the city but the majority of flights arrive at Lambert. There is a connected railway though if it’s needed for a traveler to make it to the other airport.

Related info for your journey

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

  • What airports serve Houston to St. Louis flights?

    You can fly from either of Houston’s major airports to St. Louis. The majority of the flights on this route have one stop in between. There are more flights going from George Bush Intercontinental Airport to Lambert-St. Louis International Airport than from William P. Hobby Airport in Houston.

  • Which airlines fly directly from Houston to St. Louis?

    There are not a lot of direct flights between these two cities but there are a few. They are operated by United. The flight is 2h 5m to 2h 12m, depending on the time of day you go. For more choices of departure times, you can look for a stopover flight.

  • What are the stopover options between Houston to St. Louis?

    American Airlines has a stop in Dallas for this route. Most of these are an hour or less. Delta stops in Atlanta and sometimes in Detroit. There are also a couple of options that stop in Minneapolis. United offers flights that land in Chicago at O’Hare before moving on to St. Louis. Most of the flights are around five hours or so. The longest ones are about eight hours.

  • Do I need a passport or visa to fly from Houston to St. Louis?

    You will not need your passport or a visa for this flight. The connections are all within the United States so the flights are purely domestic. There is only a requirement that you bring a valid form of identification to the airport so you are allowed to board the plane.

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

    For a flight from Houston to St. Louis, you will be flying into 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 inbound flights from Houston per day. 4 airlines have flights to Lambert-St Louis from Houston on a regular basis.

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

    Flying on Southwest is currently your cheapest option to St. Louis, with prices starting at $197. Additional round-trip tickets that might be worth considering are offered by Delta and Frontier, with the lowest prices starting at $197 and $198, respectively. Southwest is 45% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Houston to St. Louis are Southwest ($89), United Airlines ($89), and Spirit Airlines ($96).

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

    The cheapest flight price from Houston to St. Louis is $87. On average you can expect to pay $280. The most popular route, (Houston George Bush Intcntl - Lambert-St Louis), can usually be booked for $177.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Houston to St. Louis 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 Houston to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Houston to St. Louis (average of $311). Flying from Houston to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
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Chesterfield

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Alternative routes for Houston to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Houston to St. Louis

Discover the top 4 airlines that operate flights from Houston to St. Louis. 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 marzo 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$106Average$179FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$207Average$338FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$209Average$375FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$245Average$398FlexibilityNo cancel feeOn-time69%
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