United Airlines SMF to IAD on-time performance
United Airlines nonstop flights from Sacramento to Washington · Aug 2025 – Jul 2026
On-time arrivals
96%
arrived < 15 min late
Cancelled
1.6%
6 flights
Avg arrival delay
2 min
32 min when late
Rank on route
#1 of 1
route average 96% on time
Key facts
- United Airlines flights on SMF to IAD arrived on time 96% of the time in Aug 2025 – Jul 2026.
- 1.6% were cancelled, and 1% arrived an hour or more late.
- That ranks #1 of 1 airlines on this route, which averaged 96% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (53%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion53%
- Airline (crew, maintenance, cleaning, fueling)43%
- Late-arriving aircraft4%
- Extreme weather0%
- Security0%
Other airlines on SMF to IAD
365 United Airlines flights tracked on this route; 6 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.