Denver (DEN) to Austin (AUS): On-Time Performance
Data through July 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 76% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 64%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 15
- last 12 months
- Duration
- 2h 13m
- scheduled
- Distance
- 775 mi
Best airline from DEN to AUS
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 79% | 15 min | 0.4% | 3,999 |
| SkyWest Airlines | 78% | 19 min | 0.5% | 553 |
| Southwest Airlines | 75% | 15 min | 0.5% | 4,954 |
| Frontier Airlines | 71% | 20 min | 0.6% | 1,061 |
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 (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 16 min |
| Tuesday | 78% | 14 min |
| Wednesdaybest | 80% | 13 min |
| Thursday | 75% | 17 min |
| Friday | 73% | 18 min |
| Saturday | 78% | 12 min |
| Sunday | 74% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft46%
- Airline operations33%
- National airspace system18%
- Weather3%
Frequently asked questions
- How often are flights from DEN to AUS delayed?
- 24% of DEN–AUS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 16 minutes.
- Which airline is most reliable from DEN to AUS?
- United Airlines has the best on-time record on this route at 79%, based on 3,999 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 (61%). 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 13m over 775 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are DEN to AUS flights cancelled?
- 0.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, 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 10,567 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.