$85 Find Cheap Flights from Austin to St. Louis - Compare and Save

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

• Earliest: departs at 6:55 am and lands at 9:00 am
• Latest: departs at 6:55 pm and lands at 9:00 pm.

The flight takes about 2h 05m.

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

• Economy Class
• First Class

A nonstop flight from Austin to St. Louis takes 2h 05m, covering 722 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.

Round-trip flights from Austin to St. Louis range from $275 to $474, with an average of $344 over the past 12 months. Anything below $275 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 38% above the $344 route average. Book 13 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $207 round-trip via Houston Hobby (HOU), compared to $352 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

Morning is the busiest departure period on Austin to St. Louis flights, with 50% of flights leaving in that window. Afternoon departures account for 50%, evening flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $160 to $1,232. That means the highest observed fare was about 8x higher than the lowest one.

One-way fares from Austin to St. Louis are currently lower than usual. Average one-way flight prices are about $102, which is 52% below the typical average for this route.

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

Flights from Austin to St. Louis usually depart from Austin Bergstrom (AUS) and arrive at Lambert-St Louis (STL).

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

• Dallas/Fort Worth (DFW) - 65% of one-stop connections
• Houston George Bush Intcntl (IAH) - 13% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 6% of one-stop connections
• Denver Intl (DEN) - 6% of one-stop connections

Yes. Flexible dates can save you up to 42% on flights from Austin to St. Louis. Friday is the cheapest departure day at $303 round-trip on average, while Sunday is the most expensive at $515, a difference of $212.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only Southwest operates flights between Austin and St. Louis.

Flying via Tulsa (TUL) gives the shortest average 1-stop total travel time at 3h 34m, compared with 3h 51m via Houston Hobby (HOU) and 3h 54m via Dallas Love Field (DAL).

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

Among airlines operating Austin to St. Louis flights:

• Southwest: offers free seat selection

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

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

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

The peak departure travel hours range from 5 am to 11 am and 3:30 pm to 5:30 pm. Don't book your flight from Austin to St. Louis during these peak hours to avoid encountering longer waits at AUS security checkpoints.

You can try Marion Williamson County Airport located in Marion or choose Springfield Capital Airport in Springfield. Both airports are located near STL. However, you may opt for the least expensive journey on this route by typically booking flights from AUS to STL in advance other than using nearby airports.

Find car rental desks at the main terminal on your way out. There are up to seven car rental agencies at STL and they include Enterprise, Avis, Alamo, Budget, Hertz, Thrifty, and National. All companies offer shuttle services between the passenger drop-off location and the main airport terminal where you can pick up your ride.

The three Lactation Suites are located post-security of every concourse next to gates A-10, C-9, and E-33. All suites feature sinks, spacious counters power outlets, full-back club chairs with adjustable arm tables, and seats for other traveling companions. Plus, each Lactation Suite is ADA-compliant. Gain access to these facilities by texting a number shared on digital signage at each location to receive a text indicating a door code.