Denver (DEN) to Austin (AUS): On-Time Performance
Data through May 2026
When you fly DEN to AUS matters as much as anything else about the booking: the route swung from 88% on-time in September 2024 to just 57% in July 2025. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 66%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 14
- last 12 months
- Duration
- 2h 12m
- scheduled
- Distance
- 775 mi
Best airline from DEN to AUS
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 82% | 17 min | 0.7% | 431 |
| United Airlines | 79% | 14 min | 0.4% | 3,823 |
| Southwest Airlines | 76% | 15 min | 0.4% | 4,718 |
| Frontier Airlines | 73% | 19 min | 0.5% | 969 |
Monthly on-time trend
Best time to fly from DEN to AUS
Aim for departures around 6 a.m. (93% on-time); avoid 8 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 15 min |
| Tuesday | 80% | 14 min |
| Wednesdaybest | 81% | 13 min |
| Thursday | 76% | 16 min |
| Friday | 74% | 18 min |
| Saturday | 79% | 12 min |
| Sunday | 75% | 18 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft47%
- Airline operations33%
- National airspace system18%
- Weather2%
Frequently asked questions
- How often are flights from DEN to AUS delayed?
- 23% of DEN–AUS 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 15 minutes.
- Which airline is most reliable from DEN to AUS?
- SkyWest Airlines has the best on-time record on this route at 82%, based on 431 flights. 4 airlines flew DEN–AUS frequently enough to compare in this period.
- What is the best time of day to fly from DEN to AUS?
- Departures around 6 a.m. have the best record (93% on-time), while departures around 8 p.m. have the worst (63%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to AUS?
- The scheduled DEN–AUS flight time averages 2h 12m over 775 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are DEN to AUS flights cancelled?
- 0.5% 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 DEN to AUS?
- July 2025 was the roughest month in this dataset, with only 57% of arrivals on time. The best was September 2024 at 88%. If your dates are flexible, that 31-point gap is worth planning around.
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Based on 9,941 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.