Cheap Flights from St Louis to Houston (STL to IAH)

Planning a trip from St. Louis to Houston? Globitude Travels helps you secure great airfare between Gateway Arch City and Space City. Whether traveling for business in Downtown Houston or vacationing near the Gulf Coast, explore top flight options on trusted carriers like Frontier Airlines and United Airlines for your journey from St. Louis Lambert International Airport to George Bush Intercontinental Airport.

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Flying from St. Louis to Houston

Traveling from St. Louis Lambert International Airport (STL) to George Bush Intercontinental Airport (IAH) connects two dynamic hubs. Houston welcomes visitors with warm weather year-round, though summers can be hot and humid, making spring and autumn ideal times to explore vibrant neighborhoods like the Museum District, Montrose, and the Galleria area.

Houston is world-renowned for its diverse culinary scene, featuring incredible Tex-Mex, sizzling Gulf seafood, and authentic Vietnamese cuisine. When booking with Globitude Travels, you can easily compare options from budget-friendly carriers like Frontier Airlines starting around $361 and legacy carriers like United Airlines from $586 to best suit your travel budget.

Money-saving tips for this route

Consider flying with Frontier Airlines starting at $361 if you are traveling light with just a personal item.
Book your ticket at least three weeks in advance to secure the most competitive rates.
Traveling mid-week on Tuesdays or Wednesdays often yields cheaper fares than weekend departures.
Factor in extra costs like seat selection and checked bags when comparing total costs between carriers.

Frequently asked questions

What are the primary airports for flights from St. Louis to Houston?

Flights depart from St. Louis Lambert International Airport (STL) and land at George Bush Intercontinental Airport (IAH) in Houston.

Which airlines offer service between St. Louis and Houston?

Globitude Travels offers options on Frontier Airlines starting from $361 and United Airlines starting from $586 for Economy class on this route.

Do flights from STL to IAH typically have stops?

Both direct flights and itineraries with a single layover are available depending on the airline and departure time you select.

What is generally the cheapest month or time to book flights to Houston?

Booking 3 to 5 weeks in advance and flying during shoulder seasons like late autumn or winter usually offers lower airfares.

Can I book my St. Louis to Houston flight over the phone with Globitude Travels?

Yes, you can call the Globitude Travels customer support team to get help with booking, itinerary planning, and current fare options.

Related routes

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Why book with Globitude Travels

💸 Transparent pricing
The fare you see is all-inclusive — taxes and fees shown before you pay, never after.

🤝 Real travel experts
Every booking is reviewed by our team, and phone-only vendor deals can beat any online price.

🎧 24/7 human support
Before, during and after your trip — changes, cancellations and special requests handled by people.

🔒 Secure checkout
Encrypted payment, verified confirmation emails, and your PNR delivered as soon as the airline issues it.

Globitude Travels is an independent travel agency — call 1-856-513-6369 or use the search above to compare live fares on this route. See our terms, privacy policy, refund policy and service fees for full details, or contact us any time.

Page updated August 17, 2026 · fare data refreshed automatically from live flight searches.