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$117 Cheap Flights from Houston (HOU) to St. Louis (STL)

View $117 flight on Tue, Nov 3, 2026Opens in a new window

Popular airlines from Houston William Hobby Airport (HOU) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Houston to St. Louis (HOU-STL)

Prices were available within the past 7 days and start at $117 for one-way flights and $220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Oct 3 - Tue, Oct 6
HOU
Houston
STL
St. Louis
$220 Roundtrip, found 3 days ago
$220
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Oct 3 from Houston to St. Louis, returning Tue, Oct 6, priced at $220 found 3 days ago
Southwest Airlines
Sat, Oct 3 - Mon, Oct 5
HOU
Houston
STL
St. Louis
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Sat, Oct 3 from Houston to St. Louis, returning Mon, Oct 5, priced at $223 found 2 days ago
Delta
Wed, Oct 28 - Sat, Oct 31
HOU
Houston
STL
St. Louis
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 28 from Houston to St. Louis, returning Sat, Oct 31, priced at $237 found 2 days ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $402
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $402

What you need to know for your flight from William P. Hobby to Lambert-St. Louis Intl.

Houston (HOU) to St. Louis (STL) at a glance

Travel from Houston (HOU) to St. Louis (STL) with a range of airlines providing convenient domestic short-haul options. Whether you’re looking for full-service carriers or the cheapest flights from Houston, you can easily compare itineraries to find the perfect match for your budget and schedule. Explore the iconic sights and vibrant neighborhoods of St. Louis, and discover key details for flights from William P. Hobby Airport to Lambert-St. Louis International Airport.

  • Fastest flight duration: around 2 hours non-stop
  • Route distance: roughly 700 miles (1,130 km)
  • Flights per week: around 13 departures on average
  • Typical fares (one-way): economy tickets often range from $100–$455, depending on seasonality and how far ahead you book

Flights from William P. Hobby Airport (HOU) to Lambert-St. Louis International Airport (STL)

Based on the latest traveler bookings, we've identified the top airlines flying from Houston to St. Louis, favored for both non-stop and one-stop flights. Popular layover options include Love Field Airport (DAL) with a layover of approximately 1 hour and 15 minutes, Dallas-Fort Worth International Airport (DFW) at around 55 minutes, and Kansas City International Airport (MCI) with a 1-hour layover. These choices allow you to mix and match pricing, total travel duration, and cabin class to create the ideal itinerary for your journey.

  • Southwest Airlines: This budget-friendly airline provides both non-stop and one-stop flights, with one-way fares generally falling between $100 and $455. They dominate this route, managing about 98% of all departures, and the average direct flight lasts around 2 hours.
  • American Airlines: As a full-service airline, American Airlines offers one-stop routes with one-way ticket prices typically ranging from $140 to $350. They represent roughly 2% of departures on this route, with a flight time of 3 hours, leading to a total travel duration of about 4 hours and 15 minutes, including layover time.

Best time to fly from Houston (HOU) to St. Louis (STL)

The most popular months for travelers flying from Houston to St. Louis are March, April, and July, when peak temperatures in St. Louis reach up to 78.6°F in July. If you prefer quieter travel, consider May, the least busy time to visit with temperatures around 66.6°F and typically the lowest average one-way fare (around $218). Flight availability peaks in March, July, September, October, and December, with approximately 14 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 10 flights per week.

  • Cheapest time to fly: May usually offers good deals with average one-way fare around $218, roughly 16% cheaper than the yearly average.
  • More budget-friendly months to fly: October and September typically offer average one-way fares of around $229.
  • Most flight options: March, July, September, October, and December have the highest number of flights from Houston to St. Louis, with approximately 14 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January31.6°F (-0.2°C)Low11$288
February34.9°F (1.6°C)Low10$269
March46.4°F (8.0°C)High14$305
April56.1°F (13.4°C)High12$252
May66.6°F (19.2°C)Low13$218
June76.1°F (24.5°C)Average12$271
July78.6°F (25.9°C)High14$253
August77.0°F (25.0°C)Average13$243
September70.9°F (21.6°C)Average14$233
October58.6°F (14.8°C)Average14$225
November46.2°F (7.9°C)Average11$301
December37.8°F (3.2°C)Average14$266

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Houston (HOU) to St. Louis (STL)

  • Houston to St. Louis (IAH-STL): George Bush Intercontinental Airport (IAH) is located approximately 23 miles from William P. Hobby Airport (HOU). One-way economy prices for this route generally fall between $80 and $445, influenced by the season and how far in advance you book. Travelers can choose from both direct and connecting flight options. Major airlines serving this route include United and Frontier Airlines, known for its budget-friendly fares. Additionally, there are first class offerings available on this route.

How to find the best prices for flights from Houston (HOU) to St. Louis (STL)

Getting some of the best deals on flights from Houston to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book 2 to 8 weeks ahead. Evening departures from 6 PM to 12 AM often offer lower prices, while afternoon flights from 12 PM to 6 PM are the most popular. Additionally, flying on Monday generally provides cheaper options, whereas Friday remains the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from William P. Hobby Airport

St. Louis welcomes travelers from Houston with a range of transport options based on price, convenience, and proximity. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is located about 0.1 miles away on foot, providing convenient access to public transport right at your doorstep.

Frequently asked questions

How much does a flight from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $117 and cheap return flights from $220 Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights usually range from $94 to $646, and return flights typically cost between $325 and $921. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
August is the cheapest month to fly from Houston, TX (HOU) to St. Louis, MO (STL), with average return fares around $339. This price is about 14% lower than the average fare throughout the year, as summer travel often sees lower demand. Other budget-friendly months include September and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter HOU to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
United is one of the cheapest airlines offering nonstop flights from William P. Hobby (HOU) to Lambert-St. Louis Intl. (STL), with round-trip tickets starting from around $511. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best airline to fly with from Houston, TX (HOU) to St. Louis, MO (STL) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. WN also offers the most daily flights from HOU to STL, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
For your trip from Houston, TX (HOU) to St. Louis, MO (STL), August and October are the best months to fly. Return flights are around $339, making these months budget-friendly. August typically has warm weather, while October brings beautiful fall foliage, making both months appealing for travel.*Prices based on flights available on Expedia in the last year.
How many flights per day from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 4 nonstop flights per day from William P. Hobby (HOU) to Lambert-St. Louis Intl. (STL). For more options, look at flights that include layovers.
What is the earliest flight from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Houston (HOU-William P. Hobby) to St. Louis (STL-Lambert-St. Louis Intl.) usually leaves at around 5:00 AM, operated by American Airlines. This is a seasonal service available in November, and an early departure like this allows you to arrive in St. Louis with plenty of time to explore the city. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Houston, TX (HOU) to St. Louis, MO (STL) are in the early morning, from 6am to 9am. About 23% of passengers prefer this time window. Many major carriers, including American Airlines and Southwest Airlines, offer flights during this window. This timing works well because it lets you maximize your day in St. Louis after arriving in the morning.
How long does it take to fly from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Direct flights from HOU to STL usually take about 2 hours, traveling roughly 688 miles. If you opt for a connecting flight, expect to add around 4 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
First class seats are offered on the HOU to STL route. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How much is a business class flight from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
A return business class ticket from Houston (HOU) to St. Louis (STL) typically costs between $1,181 - $1,707. Knowing this range can help you budget for your travel plans. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from William P. Hobby (HOU)?
From William P. Hobby (HOU), you can fly into Lambert-St. Louis Intl. (STL) to reach St. Louis. Some flights may connect through major hubs like Love Field (DAL), San Antonio Intl. (SAT), Evers Intl. (JAN) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) St Louis Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Houston, TX (HOU-William P. Hobby) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
William P. Hobby
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines
Roundtrip price
$220
Distance
687 mi
Average flight time
2 hours 10 mins

Book with confidence

Houston to St. Louis Flights

The cheapest times to fly from Houston to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to St. Louis are during the month of October. You can find some of the cheapest flights from Houston to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to St. Louis

Sunday is one of the best days to book for cheap flights from Houston to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $117 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Houston to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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