United Airlines IAD to AUS on-time performance
United Airlines nonstop flights from Washington to Austin · Aug 2025 – Jul 2026
On-time arrivals
85%
arrived < 15 min late
Cancelled
1.0%
10 flights
Avg arrival delay
10 min
64 min when late
Rank on route
#1 of 3
route average 85% on time
Key facts
- United Airlines flights on IAD to AUS arrived on time 85% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 5% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 85% on time overall.
- The largest source of delay minutes was late-arriving aircraft (40%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft40%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion26%
- Extreme weather5%
- Security0%
Other airlines on IAD to AUS
- Allegiant Air63% on time · 21 min avg delay
- Republic Airways85% on time · 6 min avg delay
Full IAD to AUS comparison →
United Airlines on-time record across all routes →
1,004 United Airlines flights tracked on this route; 10 cancelled, 1 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.