United Airlines SAN to IAD on-time performance
United Airlines nonstop flights from San Diego to Washington · Aug 2025 – Jul 2026
On-time arrivals
89%
arrived < 15 min late
Cancelled
0.7%
7 flights
Avg arrival delay
10 min
84 min when late
Rank on route
#1 of 2
route average 88% on time
Key facts
- United Airlines flights on SAN to IAD arrived on time 89% of the time in Aug 2025 – Jul 2026.
- 0.7% were cancelled, and 3% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 88% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (41%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)41%
- Air traffic control & airport congestion25%
- Late-arriving aircraft19%
- Extreme weather15%
- Security0%
Other airlines on SAN to IAD
- Alaska Airlines87% on time · 8 min avg delay
Full SAN to IAD comparison →
United Airlines on-time record across all routes →
1,041 United Airlines flights tracked on this route; 7 cancelled, 6 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.