Direct (nonstop) flights from Austin to Saint Louis
1 airline flys nonstop from Austin-Bergstrom International Airport (AUS) to Saint Louis Airport (STL). It's 720 miles (1,159 km), about 2h 5m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 31, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Austin to Saint Louis with one stop · direct emits 133 kg CO₂ per passenger
Looking for the return flight?
STL → AUS: Flights from Saint Louis to AustinOther direct flights from Austin
Direct flights from Saint Louis (STL)
Frequently Asked Questions
How long is the direct flight from Austin to Saint Louis?
A nonstop flight from Austin (AUS) to Saint Louis (STL) takes approximately 2 hours and 5 minutes. The distance is 720 miles (1,159 km).
Which airlines fly nonstop from Austin to Saint Louis?
Just Southwest Airlines.
Is there a nonstop flight from Austin to Saint Louis?
Yes. 1 airline: Southwest Airlines.
How far is Austin from Saint Louis?
The flight distance from Austin to Saint Louis is 720 miles (1,159 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as the length of Italy.
What type of aircraft flies from Austin to Saint Louis?
At 2h 5m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Austin to Saint Louis?
Roughly 133 kg CO2 per passenger one-way. That's about the same as driving 665 km.
Is the return flight from Saint Louis to Austin also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Austin to Saint Louis?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Austin-Bergstrom International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.