Best Time to Fly SLC to AUS: On-Time Stats by Hour & Airline
Salt Lake City International → Austin - Bergstrom International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.6% of Salt Lake City (SLC) to Austin (AUS) flights arrived on time (1,784 scheduled flights). That is 5.0 points above the national average of 77.6%.
SkyWest Airlines was the most punctual of the 3 airlines on the route at 86.0%, while Southwest Airlines trailed at 77.6%.
March has been the best month (86% on time) and Sunday the weakest day of the week (77%).
0.7% of flights were cancelled, versus 1.8% nationally.
SLC to AUS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 86.0% | 49 min | 0.8% | 240 |
| Delta Air Lines | 84.1% | 63 min | 0.7% | 1,073 |
| Southwest Airlines | 77.6% | 48 min | 0.6% | 471 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to AUS
On-time arrival % by scheduled departure hour (local time), 3,540 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 15 | |
| 6am–7am | 95.2% | 0.0% | 63 |
| 7am–8am | 90.8% | 2.0% | 100 |
| 8am–9am | 89.1% | 0.0% | 165 |
| 9am–10am | 83.9% | 0.0% | 680 |
| 10am–11am | 83.0% | 0.0% | 189 |
| 11am–12pm | 82.5% | 0.0% | 190 |
| 12pm–1pm | 81.4% | 0.0% | 59 |
| 1pm–2pm | 79.5% | 0.5% | 632 |
| 2pm–3pm | 68.1% | 0.5% | 193 |
| 3pm–4pm | 74.1% | 0.0% | 54 |
| 4pm–5pm | 63.2% | 0.0% | 57 |
| 5pm–6pm | 76.8% | 0.6% | 873 |
| 6pm–7pm | Limited data | 1 | |
| 8pm–9pm | 82.3% | 1.1% | 269 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SLC to AUS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 84.6% | +2.0 pts | 0.0% | 65 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.6% | -2.0 pts | 0.0% | 129 |
| Summer peak (Jun 15 - Aug 15) | 71.1% | -11.5 pts | 0.5% | 662 |
| All other days | 82.6% | — | 0.5% | 2,684 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).