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St. Louis

$126+ Cheap flights from Hobby (HOU) 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — STL
Mar 30 — Apr 61
Mon 3/30
Mon 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Houston Hobby to Lambert-St Louis are usually found in September or October, booked 88 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Hobby to St. Louis

Cheapest flights from Hobby to St. Louis
Explore the most affordable flight options available from Hobby to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 28, 2026.

This Southwest deal was found by Cheapflights users on 2/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/610:05 pm
HOU
-
STL
Nonstop2h 00m
Southwest
Tue 4/74:25 pm
STL
-
HOU
Nonstop2h 10m
Southwest
Deal found 2/26$275
This Southwest deal was found by Cheapflights users on 2/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/258:45 pm
HOU
-
STL
Nonstop2h 05m
Southwest
Wed 4/18:50 pm
STL
-
HOU
Nonstop2h 15m
Southwest
Deal found 2/25$277
This American Airlines deal was found by Cheapflights users on 2/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:00 am
HOU
-
STL
1 stop4h 59m
American Airlines
Wed 4/17:00 am
STL
-
HOU
1 stop4h 48m
American Airlines
Deal found 2/25$297
This Southwest deal was found by Cheapflights users on 2/27. 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.
Thu 4/169:55 pm
HOU
-
STL
Nonstop2h 00m
Southwest
Mon 4/209:45 pm
STL
-
HOU
Nonstop2h 10m
Southwest
Deal found 2/27$299
This Delta deal was found by Cheapflights users on 2/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:27 pm
HOU
-
STL
1 stop6h 31m
Delta
Fri 4/104:21 pm
STL
-
HOU
1 stop6h 21m
Delta
Deal found 2/24$302
This Southwest deal was found by Cheapflights users on 2/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:00 pm
HOU
-
STL
Nonstop2h 00m
Southwest
Fri 4/107:15 pm
STL
-
HOU
Nonstop2h 10m
Southwest
Deal found 2/24$305
This Southwest deal was found by Cheapflights users on 2/27. 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.
Fri 4/179:55 pm
HOU
-
STL
Nonstop2h 00m
Southwest
Mon 4/209:45 pm
STL
-
HOU
Nonstop2h 10m
Southwest
Deal found 2/27$311

Find flight deals from Hobby to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Hobby (HOU) 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 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$275
(Southwest)

One-way from

$126
(Southwest)

Popular in

November

Cheapest in

September

Average price

$406

Good round-trip deal

$356 or less

Good one-way deal

$153 or less
Provider with most accurate pricing for Houston Hobby-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Houston Hobby-Lambert-St Louis flights.
Search Deals
From Houston Hobby to Lambert-St Louis
Search Deals
One-way flight from Houston Hobby to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Houston Hobby to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Houston Hobby to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hobby 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 28, 2026.
Use the filters below to find and compare flights from Houston Hobby Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Wed 4/8

8:55 am-12:50 pm

1 stop3h 55m

Lambert-St Louis

Fri 4/10

5:40 am-7:50 am

Nonstop2h 10m

$310

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Mon 4/27

9:55 pm-11:55 pm

Nonstop2h 00m

Lambert-St Louis

Fri 5/1

7:15 pm-9:25 pm

Nonstop2h 10m

$347

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Wed 6/17

7:35 am-9:35 am

Nonstop2h 00m

Lambert-St Louis

Tue 6/30

10:15 am-2:55 pm

1 stop4h 40m

$355

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Fri 5/22

7:35 am-9:35 am

Nonstop2h 00m

Lambert-St Louis

Tue 5/26

8:35 am-10:45 am

Nonstop2h 10m

$370

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Fri 3/20

6:30 pm-12:05 am

1 stop5h 35m

Lambert-St Louis

Mon 3/23

3:05 pm-7:30 pm

1 stop4h 25m

$387

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Fri 4/17

6:30 pm-10:40 pm

1 stop4h 10m

Lambert-St Louis

Sun 4/19

5:25 am-7:35 am

Nonstop2h 10m

$387

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Fri 4/10

2:45 pm-6:55 pm

1 stop4h 10m

Lambert-St Louis

Sun 4/12

5:25 am-7:35 am

Nonstop2h 10m

$387

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Fri 5/22

7:35 am-9:35 am

Nonstop2h 00m

Lambert-St Louis

Sun 5/24

4:50 pm-7:00 pm

Nonstop2h 10m

$395

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Tue 5/19

12:30 pm-5:55 pm

2 stops5h 25m

$141

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Sat 4/4

9:15 pm-11:15 pm

Nonstop2h 00m

$150

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Hobby to St. Louis

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 Hobby to St. Louis in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 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 Houston Hobby Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Houston Hobby Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston Hobby Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston Hobby Airport-St. Louis 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 Houston Hobby Airport-St. Louis 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 Hobby to St. Louis

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

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

Use this chart to determine the optimal time to book a round-trip flight from Hobby to St. Louis. Price data was last updated on February 20, 2026.

The best time to book flights from Houston Hobby Airport to St. Louis is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, October is the cheapest month in which you can book a flight from Houston Hobby Airport to St. Louis (average of $133). Flying from Houston Hobby Airport to St. Louis in November is currently the most expensive (average of $241). 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 Hobby 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 28, 2026.

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

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

Use this chart to determine the cheapest time to fly round-trip from Hobby to St. Louis. Price data was last updated on February 21, 2026.

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

The best insider tips for Houston Hobby Airport to St. Louis flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston Hobby Airport to St. Louis trip
Our travel experts
Taryn White

Taryn White

Expert on STL

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

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 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 28, 2026.
Read through reviews of airlines operating flights from Houston Hobby Airport to St. Louis, such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,303 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
8.0
Very good
4,303 reviews
Southwest
8.0
Very good
4,303 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
United Airlines
7.4
Good
9,362 reviews
Southwest
8.0
Very good
4,303 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
American Airlines
7.2
Good
11,367 reviews
Southwest
8.0
Very good
4,303 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Frontier
5.7
Fair
3,041 reviews
Southwest
8.0
Very good
4,303 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

Find useful and relevant information for your journey from Hobby 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 airport do you fly into for flights to St. Louis from Houston Hobby?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Houston Hobby to St. Louis. You should not have trouble finding flights to Lambert-St Louis from Houston Hobby; the airport handles an average of 3 inbound flights from Houston Hobby per day. You should also have plenty of airline options to choose from since 4 airlines have flights to the St. Louis airport from Houston Hobby. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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

    Departing from Houston Hobby Airport to St. Louis will take you 3h 55m. Airlines will cover a distance of 688 mi.

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

    Currently priced at $144, Frontier will fly you from Houston Hobby Airport to St. Louis and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $149 and $196, respectively. These flights start at 58% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $82. Southwest flights start at $88 while deals on United Airlines start at $108 one-way.

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

    Looking at all options, your cheapest flight can be booked for $148. While the most popular route (Houston Hobby - Lambert-St Louis) can be booked for $211 on average, our data indicates $337 when flying from Houston Hobby Airport to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Hobby 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 Hobby Airport to St. Louis?

    Currently, October is the cheapest month in which you can book a flight from Houston Hobby Airport to St. Louis (average of $133). Flying from Houston Hobby Airport to St. Louis in November is currently the most expensive (average of $241). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Fenton
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Hobby to St. Louis

Discover the top 4 airlines that operate flights from Hobby 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 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$144Average$233FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$149Average$378FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$332FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$212Average$377FlexibilityNo cancel feeOn-time63%

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