Cheap Flights from Houston to Saint Louis

Cheapest flights from Houston to Saint Louis

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Houston to Saint Louis. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$115

Frontier Airlines

1 layover

14h 31m

03/25/2026

The cheapest one-way flight from Houston to Saint Louis departs on 03/25/2026, is operated by Frontier Airlines and costs $115

Cheapest round trip flight

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There is no information about the cheapest roundtrip flight from Houston to Saint Louis

The fastest flight

14h 31m

Fastest flight from Houston to Saint Louis takes 14h 31m

Direct flights

Once a week

There are direct flights on this route 1 day a week: We

Distance

1094km

Timezone difference

0h

The distance between Houston and Saint Louis is 1094km (678 miles). Houston and Saint Louis are in the same time zone

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Houston to Saint Louis by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Houston to Saint Louis

March 2026

Lowest price

on average:

$144

Avg Price

Airlines operating on route

The route Houston — Saint Louis is served by several airlines: Southwest Airlines and Frontier Airlines. This gives passengers more freedom in choosing flights. You can consider not only the price but also schedules, baggage policies, and onboard service. Our service compares all offers so you can find tickets from $115 and choose the most convenient option. Thanks to airline competition, you may also find promotional fares or special offers, helping you save even more. Plan your trip in advance and choose the best flights without overpaying.

Southwest Airlines

starting at $344

Frontier Airlines

starting at $115

Non-stop flights from Houston to Saint Louis

A non-stop flight is the most convenient and comfortable way to fly from Houston to Saint Louis, despite the fact that sometimes flights with transfers can cost significantly less.

Houston — Saint Louis

HOU — STL

03/25/2026

Departure

Direct flight

WN3319

starting at $344

Schedule of direct flights from Houston to Saint Louis

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Houston to Saint Louis:

Unable to find information about the schedule of direct flights from

Houston airports overview

Andrau Airpark

•

AAP

29km

William P. Hobby Airport

•

HOU

16km

George Bush Intercontinental Airport

•

IAH

25km

Houston's main international gateway, offering extensive domestic and international routes with multiple terminals and reliable onward connections across the Americas and beyond.

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Saint Louis airports overview

Lambert-St. Louis International Airport

•

STL

20km

Serving St. Louis, Missouri, and the surrounding metro area, it handles domestic and limited international flights with major carriers, a compact terminal, and convenient access to downtown.

Spirit of St. Louis Airport

•

SUS

20km

Serving the St. Louis metro in western St. Louis County, Missouri, primarily a reliever and general aviation field with FBO services, hangars and private-charter operations.

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Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from Houston to Saint Louis?

The cheapest flight ticket from Houston to Saint Louis according to data for the last 48 hours costs $115

When is the best time to buy air tickets on the route Houston — Saint Louis?

Often the best time to buy tickets from Houston to Saint Louis is 2 months before departure.

When is the cheapest time of year to fly from Houston to Saint Louis?

Based on statistics over the past years, the lowest prices for flights from Houston to Saint Louis can be found flying in these months: March.

How long does it take to fly from Houston to Saint Louis?

The fastest flights from Houston to Saint Louis start from 14 hours 31 minutes in the air.

Which airline can fly direct from Houston to Saint Louis?

The following airlines operate direct flights on the route Houston — Saint Louis: Southwest Airlines

Special offers and sales on air tickets from Houston to Saint Louis

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Houston to Saint Louis

Alternative routes

Waco ➜ Saint Louis•Beaumont ➜ Saint Louis•College Station ➜ Saint Louis•Corpus Christi ➜ Saint Louis•Dallas ➜ Saint Louis•Killeen ➜ Saint Louis•Lake Charles ➜ Saint Louis•Lafayette ➜ Saint Louis•Shreveport ➜ Saint Louis•Tyler ➜ Saint Louis•Houston ➜ Nashville•Houston ➜ Burlington•Houston ➜ Chicago•Houston ➜ Cedar Rapids•Houston ➜ Champaign•Houston ➜ Evansville•Houston ➜ Indianapolis•Houston ➜ Memphis

•••••••••••••••••••

Cheapest one way flight

$115

Frontier Airlines

1 layover

14h 31m

03/25/2026

The cheapest one-way flight from Houston to Saint Louis departs on 03/25/2026, is operated by Frontier Airlines and costs $115

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Houston to Saint Louis

The fastest flight