$42 Find Cheap Flights from Houston to St. Louis - Compare and Save

Among airlines operating Houston to St. Louis flights:

• United Airlines: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection

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

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

• Southwest
• United Airlines

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

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

• United Airlines: a cabin bag and a checked bag in Economy Class
• Southwest: a cabin bag and a checked bag in Economy 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 Houston to St. Louis:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $214 round-trip via Orlando (MCO), compared to $433 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 Houston to St. Louis most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 37% of one-stop connections
• Denver Intl (DEN) - 26% of one-stop connections
• Dallas/Fort Worth (DFW) - 23% of one-stop connections
• Orlando (MCO) - 9% 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 41% on the Houston to St. Louis route. Wednesday is the cheapest departure day at $366 round-trip on average, while Monday is the most expensive at $612, a difference of $246. 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 Houston to St. Louis flights, with 34% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 33%, and night flights for 0%.

Some of the most popular sights in St. Louis are Downtown St. Louis, Busch Stadium and Enterprise Center. These are among the most viewed places in St. Louis on KAYAK.

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

• Earliest: departs at 5:30 am and lands at 7:35 am
• Latest: departs at 10:35 pm and lands at 12:40 am.

The flight takes about 2h 05m.

Last-minute fares on this route - booked within 2 weeks of departure - run 77% above the route average of $421. Book 18 weeks before departure for the lowest fares.

A nonstop flight from Houston to St. Louis takes 2h 05m, 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.

One-way fares from Houston to St. Louis are currently lower than usual. Average one-way flight prices are about $91, which is 64% below the typical average for this route.

Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 4h 36m, compared with 4h 41m via Dallas Love Field (DAL) and 6h 17m via Detroit Metropolitan Wayne County (DTW).

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

Round-trip flights from Houston to St. Louis range from $327 to $620, with an average of $421 over the past 12 months. Anything below $327 counts as a good deal.

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