$49 Find Cheap Flights from St. Louis to Houston - Compare and Save

Among airlines operating St. Louis to Houston flights:

• Southwest: offers free seat selection
• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between St. Louis and Houston. The airlines offering nonstop flights on this route include:

• Southwest
• United Airlines

Flights from St. Louis to Houston usually depart from Lambert-St Louis (STL) and may arrive at several airports in Houston area, including Houston Hobby (HOU) and Houston George Bush Intcntl (IAH).

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in First Class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from St. Louis to Houston:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $208 round-trip via Denver Intl (DEN), compared to $397 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

One-stop flights from St. Louis to Houston most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 58% of one-stop connections
• Dallas/Fort Worth (DFW) - 19% of one-stop connections
• Denver Intl (DEN) - 12% of one-stop connections
• Orlando (MCO) - 8% of one-stop connections

Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 19% on the St. Louis to Houston route. Tuesday is the cheapest departure day at $361 round-trip on average, while Monday is the most expensive at $444, a difference of $83. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on St. Louis to Houston flights, with 56% of flights leaving in that window. Afternoon departures account for 22%, evening flights for 22%, and night flights for 0%.

Some of the most popular sights in Houston are Downtown Houston, George R. Brown Convention Center and Galleria Mall. These are among the most viewed places in Houston on KAYAK.

These are the earliest and latest flight times available from St. Louis to Houston:

• Earliest: departs at 5:00 am and lands at 7:13 am
• Latest: departs at 10:50 pm and lands at 1:03 am.

The flight takes about 2h 13m.

Last-minute fares on this route - booked within 2 weeks of departure - run 55% above the route average of $388. Book 22 weeks before departure for the lowest fares.

A nonstop flight from St. Louis to Houston takes 2h 13m, covering 683 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $217 to $1,077. That means the highest observed fare was about 5x higher than the lowest one.

One-way fares from St. Louis to Houston are currently lower than usual. Average one-way flight prices are about $101, which is 60% below the typical average for this route.

Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 4h 25m, compared with 5h 12m via Chicago O'Hare Intl (ORD) and 8h 07m via Atlanta Hartsfield-Jackson (ATL).

Since Houston is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near Houston George Bush Intcntl Airport (IAH) — daily rates from around $3:

• ACO Rent A Car
• Easirent
• America Car Rental
• Hertz
• Thrifty

Near Houston Hobby Airport (HOU) — daily rates from around $20:

• Thrifty
• Dollar
• Alamo
• Hertz
• Budget

Round-trip flights from St. Louis to Houston range from $300 to $488, with an average of $388 over the past 12 months. Anything below $300 counts as a good deal.

JetBlue is the only airline on the St. Louis to Houston route offering in-flight Wi-Fi. Pricing depends on fare class.