Historical on-time performance
Salt Lake City to Austin
1,085 miData through Dec 2025Source: US DOT · BTS
Flights on SLC–AUS arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 1,548 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Delta Air LinesOn-time76%Medianon timep9045 minCancel0.3%Flights1,075
- Southwest AirlinesOn-time79%Medianon timep9030 minCancel0.0%Flights473
Why flights run late
Delay causes
- Airline51%
- Weather2%
- Air traffic (NAS)23%
- Late aircraft24%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SLC → AUS
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 86% on time.
- Mornings86% on time · p90 25 min · 1,353 flights
- Overnights78% on time · p90 35 min · 545 flights
- Middays77% on time · p90 40 min · 1,601 flights
- Evenings77% on time · p90 45 min · 1,080 flights
- Afternoons67% on time · p90 50 min · 469 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 82% on time.
- Tuesdays82% on time · p90 30 min · 715 flights
- Wednesdays82% on time · p90 35 min · 740 flights
- Saturdays80% on time · p90 35 min · 602 flights
- Mondays78% on time · p90 35 min · 736 flights
- Thursdays77% on time · p90 35 min · 754 flights
- Fridays77% on time · p90 45 min · 761 flights
- Sundays76% on time · p90 45 min · 740 flights
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