$78 Find Cheap Flights from St. Louis to Austin - Compare and Save

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.

Only Southwest operates flights between St. Louis and Austin.

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

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

• Southwest: a cabin bag in Economy Class 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 Austin:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $202 round-trip via Denver Intl (DEN), compared to $342 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.

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

• Dallas/Fort Worth (DFW) - 55% of one-stop connections
• Houston George Bush Intcntl (IAH) - 14% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 9% of one-stop connections
• Dallas Love Field (DAL) - 8% of one-stop connections

Dallas/Fort Worth (DFW) handles the largest share of one-stop connections on this route.

On the St. Louis to Austin route, being flexible with your departure day can save you up to 29%. Saturday is the cheapest day at $283 round-trip on average, while Sunday is the most expensive at $396: a $113 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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%.

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.

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

• Earliest: departs at 7:45 am and lands at 9:51 am
• Latest: departs at 10:50 pm and lands at 12:56 am.

The flight takes about 2h 06m.

Last-minute fares on this route - booked within 2 weeks of departure - run 36% above the route average of $339. Book 17 weeks before departure for the lowest fares.

A nonstop flight from St. Louis to Austin takes 2h 06m, 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.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $189 to $1,257. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from St. Louis to Austin are currently lower than usual. Average one-way flight prices are about $107, which is 43% below the typical average for this route.

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).

Austin Bergstrom Airport (AUS) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include:
· Europcar
· Hertz
· Fox
· Easirent
· Thrifty

Round-trip flights from St. Louis to Austin range from $267 to $434, with an average of $339 over the past 12 months. Anything below $267 counts as a good deal.

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