Ontario (ONT) to Austin (AUS) flights
One airline flies nonstop from Ontario (ONT) to Austin (AUS): Southwest Airlines. The two airports are 1,194 miles (1,922 km) apart. There are also 13 ways to fly it with one stop, through Phoenix, Las Vegas and Dallas and more.
Airlines flying nonstop from ONT to AUS
- Southwest AirlinesNot in an allianceWho books it
ONT to AUS with one stop
13 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Phoenix (PHX)American Airlines and Southwest Airlines the whole way
+1 - Via Las Vegas (LAS)Southwest Airlines and Frontier Airlines the whole way
+1
- Via Dallas (DFW)American Airlines the whole way
- Via Dallas (DAL)Southwest Airlines the whole way
- Via Houston (IAH)United Airlines the whole way
- Via Houston (HOU)Southwest Airlines the whole way
- Via Denver (DEN)Frontier Airlines, United Airlines and 1 more the whole way+1
- Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via San Jose (SJC)Southwest Airlines the whole way
- Via Oakland (OAK)Southwest Airlines the whole way
- Via San Francisco (SFO)United Airlines the whole way
- Via Sacramento (SMF)Southwest Airlines the whole way
- Via Santa Rosa (STS)Alaska Airlines, then Southwest Airlines
ONT to AUS: common questions
Which airlines fly nonstop from ONT to AUS?
Southwest Airlines flies nonstop from Ontario (ONT) to Austin (AUS).
How far is Ontario from Austin by plane?
Ontario (ONT) and Austin (AUS) are 1,194 miles (1,922 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
How many miles does ONT 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 ONT to AUS with taxes and fees.
Where can I connect between Ontario and Austin?
The most direct connections are through Phoenix (PHX), Las Vegas (LAS), Dallas (DFW), Dallas (DAL) and Houston (IAH). On 12 of them the same airline flies both flights, for example American Airlines through Phoenix.
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.