United Airlines ORD to MSO on-time performance
United Airlines nonstop flights from Chicago to Missoula · Aug 2025 – Jul 2026
On-time arrivals
89%
arrived < 15 min late
Cancelled
1.0%
1 flights
Avg arrival delay
7 min
60 min when late
Rank on route
#1 of 3
route average 80% on time
Key facts
- United Airlines flights on ORD to MSO arrived on time 89% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 3% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 80% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (49%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)49%
- Air traffic control & airport congestion28%
- Late-arriving aircraft23%
- Extreme weather0%
- Security0%
Other airlines on ORD to MSO
- Envoy Air76% on time · 14 min avg delay
- SkyWest Airlines82% on time · 11 min avg delay
Full ORD to MSO comparison →
United Airlines on-time record across all routes →
104 United Airlines flights tracked on this route; 1 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.