Is UA4543 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (UTC)
135 min early
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Knoxville
TYS
Actual
Sep 17
Arrival
Chicago
ORD
Scheduled
Sep 17
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Service date: · Scheduled departure date (UTC)
188 min late
Official source · Updated
Departure
Knoxville
TYS
Scheduled
Sep 17
Arrival
Chicago
ORD
Actual
Sep 17
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 208 min late
TYS → ORD
- 21 min early
TYS → ORD
- 188 min late
TYS → ORD
- 69 min late
TYS → ORD
- 39 min late
TYS → ORD
Flight history and details
Aug 20, 2026 — Sep 19, 2026
- Observed arrivals
- 18
- Arrivals over 15 minutes late
- 5
- Observed cancellations
- 5
- Observed occurrences
- 32
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 19, 2026Arrived | Knoxville | Chicago | 208 | |
| Sep 18, 2026Arrived | Knoxville | Chicago | -21 | |
| Sep 17, 2026Arrived | Knoxville | Chicago | 188 | |
| Sep 16, 2026Arrived | Knoxville | Chicago | 69 | |
| Sep 15, 2026Arrived | Knoxville | Chicago | 39 | |
| Sep 14, 2026Arrived | Knoxville | Chicago | -7 | |
| Sep 13, 2026Arrived | Knoxville | Chicago | -43 | |
| Sep 12, 2026Arrived | Chicago | Grand Rapids | -22 | |
| Sep 12, 2026Arrived | Knoxville | Chicago | -48 | |
| Sep 11, 2026Arrived | Knoxville | Chicago | 34 | |
| Sep 10, 2026Arrived | Knoxville | Chicago | -18 | |
| Sep 9, 2026Arrived | Knoxville | Chicago | 5 | |
| Sep 8, 2026Cancelled | Chicago | Grand Rapids | Not available | Not available |
| Sep 8, 2026Arrived | Knoxville | Chicago | -17 | |
| Sep 7, 2026Arrived | Newark | Greensboro | -20 | |
| Sep 6, 2026Arrived | Newark | Greensboro | -26 | |
| Sep 5, 2026Arrived | Norfolk | Newark | -7 | |
| Sep 4, 2026Arrived | Newark | Greensboro | -22 | |
| Sep 2, 2026Cancelled | Newark | Greensboro | Not available | Not available |
| Sep 1, 2026Cancelled | Newark | Greensboro | Not available | Not available |
| Aug 28, 2026Arrived | Newark | Greensboro | -34 | |
| Aug 27, 2026Cancelled | Newark | Greensboro | Not available | Not available |
| Aug 20, 2026Cancelled | Newark | Greensboro | Not available | Not available |