Delta Air Lines is the most reliable airline on the AUS to SLC route with a 87% on-time rate, compared to Southwest Airlines at 75%. Based on 4,120 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: AUS to SLC
Austin to Salt Lake City — airline reliability comparison
On-Time Rate by Airline
Delta Air Lines87%
SkyWest Airlines85%
Southwest Airlines75%
AUS to SLC Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 87% | 0.8% | 98m | 4,120 |
| SkyWest AirlinesOO | 85% | 0.4% | 62m | 352 |
| Southwest AirlinesWNWorst | 75% | 0.3% | 49m | 1,629 |
Route Overview
83%
Overall On-Time
78m
Avg Delay
0.6%
Cancel Rate
6,122
Total Flights
Flying out of AUS? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.