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

Currently priced at $128, 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 United Airlines and American Airlines - these airlines can fly you to your destination from $131 and $163, respectively. Frontier is priced at 66% 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 Frontier, which is currently one of the cheapest options available, starting at $61. American Airlines flights start at $118 while deals on United Airlines start at $148 one-way.

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.

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).

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

The cheapest flight price from St. Louis to Houston is $140. On average you can expect to pay $306. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $203.

What are the most popular airlines that fly from St. Louis to Houston?

The most popular airlines flying from St. Louis to Houston are Southwest, United Airlines and Frontier. Something to consider prior to booking your flight.

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 2 outbound flights to Houston per day. 5 airlines have flights to Houston from Lambert-St Louis on a regular basis.

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.

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Cheapflights Tip: The best prices from Lambert-St Louis to Houston are usually found in September or October, booked 46 days in advance, depart on a Thursday or Friday and return on a Wednesday

Find flight deals from St. Louis to Houston

Popular in	July
Cheapest in	September
Average price	$326

Highest demand for flights based on searches. 2% potential increase in price ($11 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

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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.

STL-HO1

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?

To ensure you get the cheapest price possible for a flight from St. Louis to Houston, you should look to book at least 86 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 $332). Flying from St. Louis to Houston in February is currently the most expensive (average of $452). 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?

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 20% on your trip compared to booking a flight at noon.

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

Travelers seeking maximum savings on their St. Louis to Houston flight should consider departing on Thursday afternoons 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 St. Louis to Houston flights

Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Houston trip

Our travel experts

Evie Carrick

Expert on IAH

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.

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.

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.

Get a feel of what it's like to fly with Southwest,United Airlines, andJetBlue 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.

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

2.0

Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest

8.0

Very good

4,199 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

2.0

Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines

7.4

Good

10,233 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

2.0

Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

JetBlue

7.1

Good

3,040 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

2.0

Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines

7.0

Good

12,074 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

2.0

Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Frontier

5.6

Fair

2,578 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

2.0

Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Related info for your journey

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 2 outbound flights to Houston per day. 5 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 $128, 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 United Airlines and American Airlines - these airlines can fly you to your destination from $131 and $163, respectively. Frontier is priced at 66% 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 Frontier, which is currently one of the cheapest options available, starting at $61. American Airlines flights start at $118 while deals on United Airlines start at $148 one-way.
What are the cheapest flights from St. Louis to Houston?
The cheapest flight price from St. Louis to Houston is $140. On average you can expect to pay $306. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $203.
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 $332). Flying from St. Louis to Houston in February is currently the most expensive (average of $452). 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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Top 5 airlines flying from St. Louis to Houston

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$128	Average$261	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$131	Average$401	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$163	Average$445	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$244	Average$397	FlexibilityNo cancel fee	On-time63%
JetBlue	Cheapest$269	Average$336	FlexibilityNo cancel fee	On-time62%

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Cheap flights from St. Louis (STL) to Houston

Find cheap flights from St. Louis to Houston with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from St. Louis to Houston

Popular in

Cheapest in

Average price

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.

Cheapflights Insights

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

To ensure you get the cheapest price possible for a flight from St. Louis to Houston, you should look to book at least 86 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?

What is the cheapest time of day to fly from STL to HOU?

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 20% on your trip compared to booking a flight at noon.

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

Travelers seeking maximum savings on their St. Louis to Houston flight should consider departing on Thursday afternoons 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 St. Louis to Houston 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 St. Louis to Houston trip

Our travel experts

Reviews of airlines servicing Houston

Get a feel of what it's like to fly with Southwest,United Airlines, andJetBlue 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.

Related info for your journey

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

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Houston

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Complete your trip

Complete your trip to Houston by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Louis to Houston by cabin class

Find flights from St. Louis to Houston, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Louis and Houston flights

Browse other St. Louis and Houston flight options. Last updated on September 24, 2026.

Other flights from St. Louis

Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.

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