United Airlines SJU to IAD on-time performance
United Airlines nonstop flights from San Juan to Washington · Aug 2025 – Jul 2026
On-time arrivals
90%
arrived < 15 min late
Cancelled
0.6%
4 flights
Avg arrival delay
6 min
55 min when late
Rank on route
#1 of 2
route average 87% on time
Key facts
- United Airlines flights on SJU to IAD arrived on time 90% of the time in Aug 2025 – Jul 2026.
- 0.6% were cancelled, and 3% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 87% on time overall.
- The largest source of delay minutes was late-arriving aircraft (50%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft50%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion21%
- Extreme weather0%
- Security0%
Other airlines on SJU to IAD
- Frontier Airlines64% on time · 37 min avg delay
Full SJU to IAD comparison →
United Airlines on-time record across all routes →
631 United Airlines flights tracked on this route; 4 cancelled, 0 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.