Is UA4543 delayed?

Service date: Sep 20, 2026 · Scheduled departure date (UTC)

Arrived

199 min late

Official source · Updated Sep 20, 2026, 19:54 UTC

Departure

Knoxville

TYS

Actual

18:23~~15:00~~

Sep 20

Arrival

Chicago

ORD

Actual

14:45~~11:26~~

Sep 20

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 20, 2026, 15:00 UTC
Estimated: Not available
Actual: Sep 20, 2026, 18:23 UTC

Arrival · UTC

Scheduled: Sep 20, 2026, 16:26 UTC
Estimated: Sep 20, 2026, 19:40 UTC
Actual: Sep 20, 2026, 19:45 UTC

TYSORD

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

Mon, Sep 21, 2026
TYS → ORD
101 min late
Sun, Sep 20, 2026
TYS → ORD
199 min late
Sun, Sep 20, 2026
ORD → GRR
219 min late
Sat, Sep 19, 2026
TYS → ORD
208 min late
Fri, Sep 18, 2026
TYS → ORD
21 min early

Flight history and details

Aug 23, 2026 — Sep 22, 2026

Observed arrivals: 21
Arrivals over 15 minutes late: 8
Observed cancellations: 4
Observed occurrences: 33

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

UA4543 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 21, 2026Arrived	Knoxville	Chicago	Sep 21, 2026, 18:07 UTC	101
Sep 20, 2026Arrived	Knoxville	Chicago	Sep 20, 2026, 19:45 UTC	199
Sep 19, 2026Arrived	Chicago	Grand Rapids	Sep 20, 2026, 00:34 UTC	219
Sep 19, 2026Arrived	Knoxville	Chicago	Sep 19, 2026, 19:54 UTC	208
Sep 18, 2026Arrived	Knoxville	Chicago	Sep 18, 2026, 16:05 UTC	-21
Sep 17, 2026Arrived	Knoxville	Chicago	Sep 17, 2026, 19:57 UTC	188
Sep 16, 2026Arrived	Knoxville	Chicago	Sep 16, 2026, 17:35 UTC	69
Sep 15, 2026Arrived	Knoxville	Chicago	Sep 15, 2026, 17:28 UTC	39
Sep 14, 2026Arrived	Knoxville	Chicago	Sep 14, 2026, 16:19 UTC	-7
Sep 13, 2026Arrived	Knoxville	Chicago	Sep 13, 2026, 16:06 UTC	-43
Sep 12, 2026Arrived	Chicago	Grand Rapids	Sep 12, 2026, 20:33 UTC	-22
Sep 12, 2026Arrived	Knoxville	Chicago	Sep 12, 2026, 16:01 UTC	-48
Sep 11, 2026Arrived	Knoxville	Chicago	Sep 11, 2026, 17:23 UTC	34
Sep 10, 2026Arrived	Knoxville	Chicago	Sep 10, 2026, 16:08 UTC	-18
Sep 9, 2026Arrived	Knoxville	Chicago	Sep 9, 2026, 16:31 UTC	5
Sep 8, 2026Cancelled	Chicago	Grand Rapids	Not available	Not available
Sep 8, 2026Arrived	Knoxville	Chicago	Sep 8, 2026, 16:09 UTC	-17
Sep 7, 2026Arrived	Newark	Greensboro	Sep 8, 2026, 03:34 UTC	-20
Sep 6, 2026Arrived	Newark	Greensboro	Sep 7, 2026, 03:28 UTC	-26
Sep 5, 2026Arrived	Norfolk	Newark	Sep 5, 2026, 16:10 UTC	-7
Sep 4, 2026Arrived	Newark	Greensboro	Sep 5, 2026, 03:32 UTC	-22
Sep 2, 2026Cancelled	Newark	Greensboro	Not available	Not available
Sep 1, 2026Cancelled	Newark	Greensboro	Not available	Not available
Aug 28, 2026Arrived	Newark	Greensboro	Aug 29, 2026, 03:24 UTC	-34
Aug 27, 2026Cancelled	Newark	Greensboro	Not available	Not available