Austin (AUS) to Washington (IAD): On-Time Performance
Data through July 2026
Austin (AUS) to Washington (IAD) effectively runs on two schedules. In September 2025, 97% of arrivals were on time; in July 2025 that fell to 75% — a 22-point seasonal swing. Across the full period the route averages 88% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 81%), which matters most in the rough months.
- On-time
- 88%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 2.9
- last 12 months
- Duration
- 3h 14m
- scheduled
- Distance
- 1,297 mi
Monthly on-time trend
Best time to fly from AUS to IAD
Aim for departures around 10 a.m. (95% on-time); avoid 5 p.m. departures (81%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 11 min |
| Tuesdaybest | 91% | 13 min |
| Wednesday | 90% | 6 min |
| Thursday | 88% | 8 min |
| Friday | 84% | 14 min |
| Saturday | 90% | 22 min |
| Sunday | 88% | 11 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 operations38%
- National airspace system18%
- Weather3%
Frequently asked questions
- How often are flights from AUS to IAD delayed?
- 12% of AUS–IAD 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 11 minutes.
- What is the best time of day to fly from AUS to IAD?
- Departures around 10 a.m. have the best record (95% on-time), while departures around 5 p.m. have the worst (81%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from AUS to IAD?
- The scheduled AUS–IAD flight time averages 3h 14m over 1,297 miles. Actual arrival times vary — flights on this route land 15+ minutes late 12% of the time.
- How often are AUS to IAD flights cancelled?
- 0.9% 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 AUS to IAD?
- July 2025 was the roughest month in this dataset, with only 75% of arrivals on time. The best was September 2025 at 97%. If your dates are flexible, that 22-point gap is worth planning around.
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Based on 2,132 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.