United Airlines
Is UA4559 delayed?
UA4559 is cancelled on Nov 14.
Usually on time: arrived within 15 min of schedule on 23 of the last 26 flights.
Cancelled
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Chicago
ORD
Scheduled
Nov 14
Arrival
Knoxville
TYS
Scheduled
Nov 14
Times shown in airport local time
Service date: · Scheduled departure date (America/Chicago)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Also sold as NZ2860
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 23 min late
Chicago → Knoxville
- 22 min early
Chicago → Knoxville
- 24 min early
State College → Chicago
- 28 min early
Chicago → Knoxville
- 31 min early
Chicago → Knoxville
Is UA4559 usually late?
Period: Oct 15, 2026 – Nov 14, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Compares scheduled and actual arrival times. Cancelled and diverted flights are left out. Some flights may be missing.
At the airports today
Chicago (ORD) departures
- Left more than 15 min late
- 66 of 161
- Cancelled today
- 134
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 13, 2026Arrived | Chicago | Knoxville | 23 | |
| Nov 12, 2026Arrived | Chicago | Knoxville | -22 | |
| Nov 12, 2026Arrived | State College | Chicago | -24 | |
| Nov 11, 2026Arrived | Chicago | Knoxville | -28 | |
| Nov 10, 2026Arrived | Chicago | Knoxville | -31 | |
| Nov 10, 2026Arrived | State College | Chicago | -21 | |
| Nov 9, 2026Arrived | Chicago | Knoxville | -32 | |
| Nov 9, 2026Arrived | State College | Chicago | -27 | |
| Nov 8, 2026Arrived | Chicago | Knoxville | 78 | |
| Nov 8, 2026Arrived | State College | Chicago | -24 | |
| Nov 7, 2026Arrived | Chicago | Knoxville | 6 | |
| Nov 7, 2026Arrived | State College | Chicago | -30 | |
| Nov 6, 2026Arrived | Chicago | Knoxville | -2 | |
| Nov 6, 2026Arrived | State College | Chicago | -19 | |
| Nov 5, 2026Arrived | Chicago | Knoxville | -27 | |
| Nov 5, 2026Arrived | State College | Chicago | -6 | |
| Nov 4, 2026Arrived | Chicago | Knoxville | 19 | |
| Nov 4, 2026Arrived | State College | Chicago | -16 | |
| Nov 3, 2026Arrived | Chicago | Knoxville | -12 | |
| Nov 3, 2026Arrived | State College | Chicago | Not available | |
| Nov 2, 2026Arrived | Chicago | Knoxville | 12 | |
| Nov 2, 2026Arrived | State College | Chicago | Not available | |
| Nov 1, 2026Arrived | Chicago | Knoxville | -10 | |
| Oct 31, 2026Arrived | Chicago | Knoxville | -20 | |
| Oct 31, 2026Arrived | State College | Chicago | Not available | |
| Oct 30, 2026Arrived | State College | Chicago | Not available | |
| Oct 29, 2026Arrived | Chicago | Knoxville | -27 | |
| Oct 29, 2026Arrived | State College | Chicago | Not available | |
| Oct 27, 2026Arrived | Chicago | Knoxville | -25 | |
| Oct 27, 2026Arrived | State College | Chicago | Not available | |
| Oct 26, 2026Arrived | Chicago | Knoxville | -9 | |
| Oct 26, 2026Arrived | State College | Chicago | Not available | |
| Oct 25, 2026Arrived | Chicago | Knoxville | -24 | |
| Oct 25, 2026Arrived | State College | Chicago | Not available |