United Airlines SJU to ORD on-time performance
United Airlines nonstop flights from San Juan to Chicago · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.6%
4 flights
Avg arrival delay
8 min
38 min when late
Rank on route
#1 of 4
route average 79% on time
Key facts
- United Airlines flights on SJU to ORD arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 0.6% were cancelled, and 3% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (46%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion46%
- Late-arriving aircraft41%
- Airline (crew, maintenance, cleaning, fueling)13%
- Extreme weather0%
- Security0%
Other airlines on SJU to ORD
- American Airlines76% on time · 26 min avg delay
- Spirit Airlines78% on time · 19 min avg delay
- Frontier Airlines61% on time · 41 min avg delay
Full SJU to ORD comparison →
United Airlines on-time record across all routes →
665 United Airlines flights tracked on this route; 4 cancelled, 7 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.