ON TIMEBOARD

UA 4644 on time

United Airlines 4644: Charleston to Chicago at 5:57 p.m. (past 12 months)

On time
42%
292 flights · likely 37–48%
Cancelled
5.8%
of scheduled flights
Typical arrival
+19 min
median vs schedule
When late
+99 min
average delay
Similar flights
43%
UA, same route & hour

About 6 in 10 UA 4644 flights from Charleston arrived 15+ minutes late, diverted or cancelled over the past year (58%); 5.8% were cancelled. The typical flight landed 19 minutes late.

UA 4644: CRW → ORD

Scheduled to leave Charleston at 5:57 p.m. local time, operated by SkyWest as OO 4644. Over the past year it arrived on time 42% of the time (292 flights), in line with other UA flights on the route at that hour (43%). Last seen in the data Aug 10, 2026.

Usually United Airlines's last flight of the day from Charleston to Chicago (99% of days). United Airlines's last CRW–ORD flight was cancelled 5.8% of the time, against 2.8% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 7:00 a.m. the next morning.

Month by month

0%50%100%Sep 2025: 40% on time (30 flights)40SepOct 2025: 42% on time (31 flights)42OctNov 2025: 28% on time (29 flights)28NovDec 2025: 12% on time (17 flights)12DecJan 2026: 46% on time (26 flights)46JanFeb 2026: 61% on time (28 flights)61FebMar 2026: 25% on time (28 flights)25MarApr 2026: too few flights (1 flights)AprMay 2026: 52% on time (31 flights)52MayJun 2026: 53% on time (30 flights)53JunJul 2026: 45% on time (31 flights)45JulAug 2026: too few flights (10 flights)Aug

By day of week

DayFlightsOn time
Monday4240%
Tuesday4245%
Wednesday4236%
Thursday4144%
Friday4240%
Saturday4240%
Sunday4149%

Why it was late

Late inbound plane 33%Air traffic & airport (NAS) 30%Airline (crew, maintenance, ops) 25%Severe weather 13%

All flights CRW → ORD · Connecting off UA 4644? Check the risk

Questions

How often is UA 4644 from CRW to ORD late?

United Airlines 4644 from Charleston/Dunbar, WV to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 58% of 292 scheduled flights between September 2025 and August 2026. 5.8% 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.