MSO → ORD United Airlines

United Airlines · Missoula, MT to Chicago, IL · 152 flights, 2025-07-01 to 2026-06-30 · aggregated across 5 flight numbers

This route's reliability varies a lot by day of week — 90% on-time on Saturdays vs. 52% on Wednesdays.
On-time arrival
71%
Median delay
0 min
90th percentile
+51 min
Cancellation rate
3%

How on-time is United Airlines from MSO to ORD?

Across every United Airlines flight number on MSO → ORD (152 flights, 2025-07-01 to 2026-06-30), 71% arrived within 15 minutes of schedule. Median arrival delay 0 min; the worst 10% ran +51 min or later. 3% were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time10271%
16-30 min1813%
31-60 min139%
61-120 min43%
2+ hrs75%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073053%+22 min
2025-082969%+15 min
2025-092374%+5 min
2025-102568%+33 min
2026-059100%-14 min
2026-062882%+6 min

Performance by day of week

DayFlightsOn-time
Mon2070%
Tue2176%
Wed2152%
Thu2186%
Fri2162%
Sat2090%
Sun2060%

UA flight numbers on MSO → ORD

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…