Route guide
Cheap Flights from Houston to St. Louis: Book Airline Tickets
- Distance
- about 670 mi
- Typical flight time
- 1 h 30 min – 2 h 30 min
- Airports
- 2 × 1
- Time difference
- None
This page covers the practical side of flying between Houston and St. Louis: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: Houston to St. Louis is about 670 miles (1,080 km) and a typical flight takes 1 h 30 min to 2 h 30 min. There is no time difference. Houston has 2 airports to compare and St. Louis has 1.
Airport pairs to compare
Houston has two main airports: Bush Intercontinental to the north and Hobby to the southeast. Hobby is closer to downtown. St. Louis has one main airport with a light rail link to downtown.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| IAH to STL | George Bush Intercontinental | St. Louis Lambert International |
| HOU to STL | William P. Hobby | St. Louis Lambert International |
About the airports
- IAH · George Bush Intercontinental
The larger airport, north of the city, with a wide range of domestic and international flights. - HOU · William P. Hobby
Closer to downtown and a good option for domestic trips. - STL · St. Louis Lambert International
The main airport, northwest of downtown and linked to the city by MetroLink light rail.
Airlines with a major base at either end
- At Houston: United Airlines, Southwest Airlines
Airlines with a base at one end often connect through their hub. A specialist can compare nonstop and connecting options on your dates.
When to go and what to expect
Houston
Fall through spring is the most comfortable period. Summers are hot and humid, and hurricane season runs June through November.
Hurricane season runs from June through November, so check fare rules for changes if you travel in that window.
St. Louis
Spring and fall are the most comfortable seasons. Summers are hot and humid, and winter can bring snow and ice.
How long is Houston to St. Louis?
At about 670 miles, Houston to St. Louis is a short-to-medium flight. Fares on routes this length are sensitive to the day of the week and the time of day, so check a few departure times before you settle.
Getting between the airport and town
Houston: Rental cars and ride-hail are the most common choices. Distances are large, so check where your hotel is before choosing an airport.
St. Louis: MetroLink light rail runs from the airport to downtown St. Louis. Taxis, ride-hail and rental cars are also available.
Planning ground transport too? See our car rental guide.
Good to know
- Check every airport pairing when you compare fares. Schedules and airline options can differ between them.
- Compare both airports when you look at fares, and keep weather in mind if you travel in late summer.
- Winter storms and summer thunderstorms are the usual causes of delays, so leave extra connection time in those seasons.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying St. Louis to Houston?
This route guide works in both directions. For other trips, see all flights from Houston or all flights from St. Louis.
Frequently asked questions
How far is Houston from St. Louis?
The straight-line distance between the main airports is about 670 miles (1,080 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from Houston to St. Louis?
A typical scheduled flight takes roughly 1 h 30 min to 2 h 30 min in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At Houston: IAH (George Bush Intercontinental), HOU (William P. Hobby). At St. Louis: STL (St. Louis Lambert International). Ask for prices on more than one pairing.
Is there a time difference?
There is no time difference.
When is the best time to fly from Houston to St. Louis?
In Houston: Fall through spring is the most comfortable period. Summers are hot and humid, and hurricane season runs June through November.Hurricane season runs from June through November, so check fare rules for changes if you travel in that window. In St. Louis: Spring and fall are the most comfortable seasons. Summers are hot and humid, and winter can bring snow and ice. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for Houston to St. Louis?
Airlines with a major base at either end include United Airlines and Southwest Airlines. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
Route details updated October 18, 2026.