Austin (AUS) to Salt Lake City (SLC): On-Time Performance
Data through May 2026
When you fly AUS to SLC matters as much as anything else about the booking: the route swung from 91% on-time in January 2025 to just 72% in May 2025. Across the full period the route averages 83% on-time against a national 78%. Morning departures also hold up better than evening ones (91% vs 74%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 4.9
- last 12 months
- Duration
- 2h 59m
- scheduled
- Distance
- 1,086 mi
Best airline from AUS to SLC
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 86% | 13 min | 0.7% | 2,296 |
| SkyWest Airlines | 86% | 11 min | 1.1% | 276 |
| Southwest Airlines | 75% | 14 min | 0.1% | 966 |
Monthly on-time trend
Best time to fly from AUS to SLC
Aim for departures around 8 a.m. (94% on-time); avoid 5 p.m. departures (64%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 14 min |
| Tuesdaybest | 85% | 11 min |
| Wednesday | 83% | 11 min |
| Thursday | 81% | 15 min |
| Friday | 83% | 13 min |
| Saturday | 83% | 15 min |
| Sunday | 84% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft41%
- Airline operations49%
- National airspace system7%
- Weather3%
Frequently asked questions
- How often are flights from AUS to SLC delayed?
- 17% of AUS–SLC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from AUS to SLC?
- Delta Air Lines has the best on-time record on this route at 86%, based on 2,296 flights. 3 airlines flew AUS–SLC frequently enough to compare in this period.
- What is the best time of day to fly from AUS to SLC?
- Departures around 8 a.m. have the best record (94% on-time), while departures around 5 p.m. have the worst (64%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from AUS to SLC?
- The scheduled AUS–SLC flight time averages 2h 59m over 1,086 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are AUS to SLC flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from AUS to SLC?
- May 2025 was the roughest month in this dataset, with only 72% of arrivals on time. The best was January 2025 at 91%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 3,538 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.