ON TIMEBOARD

UA 5956 on time

United Airlines 5956: Aspen to Chicago at 12:39 p.m. (past 12 months)

On time
64%
280 flights · likely 58–69%
Cancelled
4.6%
of scheduled flights
Typical arrival
−4 min
median vs schedule
When late
+92 min
average delay
Similar flights
65%
UA, same route & hour

About 1 in 3 UA 5956 flights from Aspen arrived 15+ minutes late, diverted or cancelled over the past year (36%); 4.6% were cancelled. The typical flight landed 4 minutes early.

UA 5956: ASE → ORD

Scheduled to leave Aspen at 12:39 p.m. local time, operated by SkyWest as OO 5956. Over the past year it arrived on time 64% of the time (280 flights), in line with other UA flights on the route at that hour (65%). Last seen in the data Aug 31, 2026.

Usually United Airlines's last flight of the day from Aspen to Chicago (67% of days). United Airlines's last ASE–ORD flight was cancelled 5.2% of the time, against 3.2% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 9:00 a.m. the next morning.

Month by month

40%70%100%Aug 2025: too few flights (13 flights)AugSep 2025: 77% on time (30 flights)77SepOct 2025: 72% on time (25 flights)72OctDec 2025: 50% on time (16 flights)50DecJan 2026: 73% on time (26 flights)73JanFeb 2026: 68% on time (28 flights)68FebMar 2026: 71% on time (31 flights)71MarApr 2026: 64% on time (22 flights)64AprMay 2026: too few flights (10 flights)MayJun 2026: 50% on time (30 flights)50JunJul 2026: 52% on time (31 flights)52JulAug 2026: 48% on time (31 flights)48Aug

By day of week

DayFlightsOn time
Monday4063%
Tuesday4168%
Wednesday4176%
Thursday3959%
Friday4060%
Saturday4057%
Sunday3962%

Why it was late

Airline (crew, maintenance, ops) 30%Air traffic & airport (NAS) 28%Severe weather 21%Late inbound plane 21%

All flights ASE → ORD · Connecting off UA 5956? Check the risk

Questions

How often is UA 5956 from ASE to ORD late?

United Airlines 5956 from Aspen, CO to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 36% of 280 scheduled flights between September 2025 and August 2026. 4.6% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.