United Airlines BOI to ORD on-time performance
United Airlines nonstop flights from Boise to Chicago · Aug 2025 – Jul 2026
On-time arrivals
77%
arrived < 15 min late
Cancelled
0.8%
2 flights
Avg arrival delay
21 min
88 min when late
Rank on route
#2 of 4
route average 75% on time
Key facts
- United Airlines flights on BOI to ORD arrived on time 77% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 10% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (49%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion49%
- Late-arriving aircraft43%
- Airline (crew, maintenance, cleaning, fueling)8%
- Extreme weather0%
- Security0%
Other airlines on BOI to ORD
- SkyWest Airlines83% on time · 14 min avg delay
- American Airlines62% on time · 35 min avg delay
- Envoy Air64% on time · 40 min avg delay
Full BOI to ORD comparison →
United Airlines on-time record across all routes →
244 United Airlines flights tracked on this route; 2 cancelled, 3 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.