St. Louis

$65+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — STL
Feb 26 — Mar 51
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The best prices from Houston to Lambert-St Louis are usually found in April or August, booked 82 days in advance, depart on a Tuesday or Friday 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 February 21, 2025.

Round-trip from

$110
(Booking.com)

One-way from

$65
(Frontier)

Popular in

July

Cheapest in

April

Average price

$376
From Houston to Lambert-St Louis
One-way flight from Houston to Lambert-St Louis
Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in February 2025

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 February 21, 2025.

This Booking.com deal was found by Cheapflights users on 2/20. 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 3/58:22 pmIAH - STL
1 stop27h 27mFrontier
Wed 3/265:24 pmSTL - IAH
1 stop22h 36mFrontier
Deal found 2/20$110
This Southwest deal was found by Cheapflights users on 2/20. 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 3/65:10 amHOU - STL
Nonstop1h 55mSouthwest
Mon 3/1010:55 pmSTL - HOU
Nonstop2h 10mSouthwest
Deal found 2/20$177
This United Airlines deal was found by Cheapflights users on 2/20. 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 4/28:04 pmIAH - STL
Nonstop2h 05mUnited Airlines
Wed 4/96:15 amSTL - IAH
Nonstop2h 17mUnited Airlines
Deal found 2/20$178
This CheapOair deal was found by Cheapflights users on 2/19. 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.
Mon 3/319:21 pmIAH - STL
1 stop20h 31mMultiple Airlines
Wed 4/24:57 pmSTL - IAH
1 stop18h 01mMultiple Airlines
Deal found 2/19$179
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/205:00 amIAH - STL
1 stop3h 48mAmerican Airlines
Thu 3/275:10 amSTL - IAH
1 stop4h 11mAmerican Airlines
Deal found 2/20$197
This Delta deal was found by Cheapflights users on 2/19. 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.
Tue 4/16:00 amIAH - STL
1 stop6h 00mDelta
Wed 4/26:50 amSTL - IAH
1 stop8h 10mDelta
Deal found 2/19$217
This FlightHub deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/319:21 pmIAH - STL
1 stop20h 31mSpirit Airlines
Thu 4/36:47 pmSTL - IAH
1 stop13h 13mSpirit Airlines
Deal found 2/19$225
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:08 amHOU - STL
1 stop7h 33mAmerican Airlines
Mon 4/75:27 pmSTL - HOU
1 stop6h 29mAmerican Airlines
Deal found 2/20$240
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 4/26:00 amHOU - STL
1 stop6h 00mDelta
Sat 4/54:27 pmSTL - HOU
1 stop4h 55mDelta
Deal found 2/19$248

Find flights from Houston to St. Louis within your budget

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 February 21, 2025.

Fly from

Houston

Fly to

St. Louis

Route

Depart

Return

Price

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 3/5

8:22 pm-11:49 pm

1 stop27h 27m

Lambert-St Louis

Wed 3/26

5:24 pm-4:00 pm

1 stop22h 36m

$110

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Thu 3/6

5:10 am-7:05 am

Nonstop1h 55m

Lambert-St Louis

Mon 3/10

10:55 pm-1:05 am

Nonstop2h 10m

$177

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 4/2

8:04 pm-10:09 pm

Nonstop2h 05m

Lambert-St Louis

Wed 4/9

6:15 am-8:32 am

Nonstop2h 17m

$178

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Mon 3/31

9:21 pm-5:52 pm

1 stop20h 31m

Lambert-St Louis

Wed 4/2

4:57 pm-10:58 am

1 stop18h 01m

$179

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 3/20

5:00 am-8:48 am

1 stop3h 48m

Lambert-St Louis

Thu 3/27

5:10 am-9:21 am

1 stop4h 11m

$197

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Tue 4/1

6:00 am-12:00 pm

1 stop6h 00m

Lambert-St Louis

Wed 4/2

6:50 am-3:00 pm

1 stop8h 10m

$217

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Mon 3/31

9:21 pm-5:52 pm

1 stop20h 31m

Lambert-St Louis

Thu 4/3

6:47 pm-8:00 am

1 stop13h 13m

$225

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Thu 4/3

9:08 am-4:41 pm

1 stop7h 33m

Lambert-St Louis

Mon 4/7

5:27 pm-11:56 pm

1 stop6h 29m

$240

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Wed 4/2

6:00 am-12:00 pm

1 stop6h 00m

Lambert-St Louis

Sat 4/5

4:27 pm-9:22 pm

1 stop4h 55m

$248

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 3/21

9:16 am-11:59 pm

2 stops14h 43m

Lambert-St Louis

Mon 3/24

3:11 pm-7:16 pm

2 stops28h 05m

$793

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 23 results
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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.

Travel insights for flights from Houston to St. Louis

Get recent, data-driven insights about flights from Houston to St. Louis including ideal travel times, pricing trends, and more.

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 February 14, 2025.

Booking 64 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 February 21, 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 at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 7% 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 Wednesday at noon when fares are most often at their lowest. Monday at noon 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 February 21, 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.

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

8.0
Very good

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 2 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 Frontier is currently your cheapest option to St. Louis, with prices starting at $110. Additional round-trip tickets that might be worth considering are offered by Southwest and United Airlines, with the lowest prices starting at $177 and $178, respectively. Frontier is 69% 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 Frontier ($65), Spirit Airlines ($79), and Southwest ($89).

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

    The cheapest flight price from Houston to St. Louis is $108. On average you can expect to pay $307. The most popular route, (Houston Hobby - Lambert-St Louis), can usually be booked for $169.

  • 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
Eureka
St. Peters
Festus
Alton
Farmington
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.

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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$106Average$181FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$205Average$392FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$207Average$357FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$272Average$376FlexibilityNo cancel feeOn-time63%
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