$52 Find Cheap Flights from St. Louis to Austin - Compare and Save

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

• Earliest: departs at 7:45 am and lands at 9:54 am
• Latest: departs at 10:50 pm and lands at 12:59 am.

The flight takes about 2h 09m.

Only Economy Class is available on flights from St. Louis to Austin.

A nonstop flight from St. Louis to Austin takes 2h 09m, 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 St. Louis to Austin range from $273 to $445, with an average of $349 over the past 12 months. Anything below $273 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 45% above the $349 route average. Book 17 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $258 round-trip via Houston Hobby (HOU), compared to $364 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 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

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

One-way fares from St. Louis to Austin are currently lower than usual. Average one-way flight prices are about $109, which is 43% below the typical average for this route.

Austin Bergstrom Airport (AUS) hosts 5 major car rental companies, with daily rates averaging $57 for economy cars. Top options include:

• Europcar
• Hertz
• Fox
• Thrifty
• Dollar

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

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

• Dallas/Fort Worth (DFW) - 60% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 10% of one-stop connections
• Houston George Bush Intcntl (IAH) - 9% of one-stop connections
• Dallas Love Field (DAL) - 8% of one-stop connections

Yes. Flexible dates can save you up to 29% on flights from St. Louis to Austin. Saturday is the cheapest departure day at $283 round-trip on average, while Sunday is the most expensive at $397, a difference of $114.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Only Southwest operates flights between St. Louis and Austin.

Flying via Tulsa (TUL) gives the shortest average 1-stop total travel time at 3h 57m, compared with 3h 58m via Dallas Love Field (DAL) and 4h 07m via Houston Hobby (HOU).

Some of the most popular sights in Austin are Sixth Street, University of Texas at Austin and ACL Live at The Moody Theater. These are among the most viewed places in Austin on KAYAK.

Among airlines operating St. Louis to Austin 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 in Economy Class class

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