CA $116 Cheap Flights from Houston (IAH) to St. Louis (STL)

View CA $116 flight on Mon, Aug. 18, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Lambert-St. Louis International Airport (STL)

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Cheap flights from Houston (IAH) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $116 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Houston (IAH) to St. Louis (STL)

August is typically the cheapest month to fly

From CA $151 - CA $514 per traveller.

Graph displaying average flight prices per month

Flight from Houston to St. Louis (IAH - STL) route information
Origin airport
George Bush Intercontinental
Destination airport
Lambert-St. Louis Intl.
Distance
1068 km
Average flight time
2 hours 12 mins

Houston to St. Louis Flights

The easy way to book your flights from Houston to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Houston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are Emirates, Copa Airlines, ANA, Virgin Australia, Air New Zealand, United Airlines nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Houston to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from George Bush Intercontinental, IAH to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Houston to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Houston currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Houston 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from Houston Airport to Lambert-St. Louis Intl. Airport (STL)?
The lowest price advertised for a round-trip journey from Houston Airport to Lambert-St. Louis Intl. Airport (STL) is . But you better get a move on. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from George Bush Intercontinental Airport (IAH) to Lambert-St. Louis Intl. Airport (STL)?
The majority of flights can be cancelled online, but each air carrier has its own terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from Houston Airport to Lambert Field that have flexible change policies?
Select our "No change fees" filter to find flexible travel options for your flight from IAH to Lambert Field. This allows you to secure a low rate in advance and still have the freedom to make changes without any extra fees. Fare adjustments may apply if your new flight is more expensive.
How many hours is the flight from Houston Airport to Lambert-St. Louis Intl. Airport (STL)?
With the flight time between IAH and STL just 6 hours and 46 minutes, you'll be exploring the sights of St. Louis before you know it.
How far is the flight from IAH to Lambert-St. Louis Intl. Airport (STL)?
With a flight distance of 1,100 kilometres, it's just a short hop from IAH to Lambert-St. Louis Intl. Airport (STL). It might be a quick flight, but it's still worth bringing along something to read.
Which airlines fly direct from Houston Airport to Lambert-St. Louis Intl. Airport (STL)?
If you're eager to fly directly from Houston Airport to Lambert Field, United Airlines (UA) is a popular option. It operates 86 flights every month between Houston and St. Louis.
Are George Bush Intercontinental Airport (IAH) to STL flight tickets cheaper when they're purchased at the last minute?
Flight prices are always on the move, so not always. While last-minute deals between Houston Airport and STL are possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some carriers advertise their prices up to a year before the departure date. Expedia is constantly updating the best bargains around, so check back often and be ready to pounce when the price is right.

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