United Airlines MSO to ORD on-time performance
United Airlines nonstop flights from Missoula to Chicago · Aug 2025 – Jul 2026
On-time arrivals
79%
arrived < 15 min late
Cancelled
2.9%
3 flights
Avg arrival delay
22 min
101 min when late
Rank on route
#1 of 3
route average 75% on time
Key facts
- United Airlines flights on MSO to ORD arrived on time 79% of the time in Aug 2025 – Jul 2026.
- 2.9% were cancelled, and 9% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (62%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion62%
- Late-arriving aircraft22%
- Airline (crew, maintenance, cleaning, fueling)16%
- Extreme weather0%
- Security0%
Other airlines on MSO to ORD
- Envoy Air74% on time · 22 min avg delay
- SkyWest Airlines73% on time · 23 min avg delay
Full MSO to ORD comparison →
United Airlines on-time record across all routes →
104 United Airlines flights tracked on this route; 3 cancelled, 4 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.