Saint Louis (STL) to Austin (AUS) flights
One airline flies nonstop from Saint Louis (STL) to Austin (AUS): Southwest Airlines. The two airports are 721 miles (1,161 km) apart. There are also 20 ways to fly it with one stop, through Dallas, Dallas and Houston and more.
Airlines flying nonstop from STL to AUS
- Southwest AirlinesNot in an allianceWho books it
STL to AUS with one stop
20 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Dallas (DAL)Southwest Airlines the whole way
- Via Dallas (DFW)American Airlines the whole way
- Via Houston (IAH)United Airlines the whole way
- Via Houston (HOU)Southwest Airlines the whole way
- Via Kansas City (MCI)Southwest Airlines the whole way
- Via Nashville (BNA)Southwest Airlines the whole way
- Via New Orleans (MSY)Southwest Airlines the whole way
- Via Omaha (OMA)Southwest Airlines the whole way
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Pensacola (PNS)Southwest Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Fort Walton Beach (VPS)Southwest Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines, Southwest Airlines and 1 more the whole way
- Via Panama City (ECP)Southwest Airlines the whole way
- Via Milwaukee (MKE)Southwest Airlines the whole way
STL to AUS: common questions
Which airlines fly nonstop from STL to AUS?
Southwest Airlines flies nonstop from Saint Louis (STL) to Austin (AUS).
How far is Saint Louis from Austin by plane?
Saint Louis (STL) and Austin (AUS) are 721 miles (1,161 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
How many miles does STL to AUS cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for STL to AUS with taxes and fees.
Where can I connect between Saint Louis and Austin?
The most direct connections are through Dallas (DAL), Dallas (DFW), Houston (IAH), Houston (HOU) and Kansas City (MCI). On 20 of them the same airline flies both flights, for example Southwest Airlines through Dallas.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.