Is UA4540 delayed?

Each route and date is shown separately. Confirm that both airports match your booking.

Service date: Sep 8, 2026 · Scheduled departure date (America/Chicago)

Arrived

30 min early

Official source · Updated Sep 8, 2026, 16:08 UTC

Departure

Chicago

ORD

Scheduled

10:58

Sep 8

Arrival

Appleton

ATW

Actual

16:08~~16:38~~

Sep 8

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 8, 2026, 15:58 UTC
Estimated: Not available
Actual: Not available

Arrival · UTC

Scheduled: Sep 8, 2026, 16:38 UTC
Estimated: Not available
Actual: Sep 8, 2026, 16:08 UTC

Service date: Sep 8, 2026 · Scheduled departure date (UTC)

Arrived

9 min early

Official source · Updated Sep 8, 2026, 11:38 UTC

Departure

Chattanooga

CHA

Actual

10:11~~10:16~~

Sep 8

Arrival

Chicago

ORD

Actual

06:36~~06:45~~

Sep 8

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 8, 2026, 10:16 UTC
Estimated: Not available
Actual: Sep 8, 2026, 10:11 UTC

Arrival · UTC

Scheduled: Sep 8, 2026, 11:45 UTC
Estimated: Sep 8, 2026, 11:23 UTC
Actual: Sep 8, 2026, 11:36 UTC

ORDATW

CHAORD

Recent arrivals

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

Thu, Sep 17, 2026
CHA → ORD
299 min late
Wed, Sep 16, 2026
CHA → ORD
1 min early
Tue, Sep 15, 2026
CHA → ORD
17 min early
Mon, Sep 14, 2026
CHA → ORD
5 min late
Sun, Sep 13, 2026
ORD → ATW
27 min early

Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals: 17
Arrivals over 15 minutes late: 3
Observed cancellations: 1
Observed occurrences: 18

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

UA4540 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 17, 2026Cancelled	Chicago	Appleton	Not available View this flight’s market	Not available
Sep 17, 2026Arrived	Chattanooga	Chicago	Sep 17, 2026, 16:44 UTC View this flight’s market	299
Sep 16, 2026Arrived	Chattanooga	Chicago	Sep 16, 2026, 11:44 UTC	-1
Sep 15, 2026Arrived	Chattanooga	Chicago	Sep 15, 2026, 11:28 UTC	-17
Sep 14, 2026Arrived	Chattanooga	Chicago	Sep 14, 2026, 11:50 UTC	5
Sep 13, 2026Arrived	Chicago	Appleton	Sep 13, 2026, 16:11 UTC	-27
Sep 13, 2026Arrived	Chattanooga	Chicago	Sep 13, 2026, 11:33 UTC	-12
Sep 12, 2026Arrived	Chattanooga	Chicago	Sep 12, 2026, 12:01 UTC	16
Sep 11, 2026Arrived	Chattanooga	Chicago	Sep 11, 2026, 11:42 UTC	-22
Sep 10, 2026Arrived	Chicago	Appleton	Sep 10, 2026, 18:34 UTC	116
Sep 10, 2026Arrived	Chattanooga	Chicago	Sep 10, 2026, 11:47 UTC	6
Sep 9, 2026Arrived	Chattanooga	Chicago	Sep 9, 2026, 11:30 UTC	-15
Sep 8, 2026Arrived	Chicago	Appleton	Sep 8, 2026, 16:08 UTC	-30
Sep 8, 2026Arrived	Chattanooga	Chicago	Sep 8, 2026, 11:36 UTC	-9
Sep 7, 2026Arrived	Chattanooga	Chicago	Sep 7, 2026, 11:52 UTC	-9
Sep 6, 2026Arrived	Chattanooga	Chicago	Sep 6, 2026, 11:49 UTC	-12
Sep 5, 2026Arrived	Chattanooga	Chicago	Sep 5, 2026, 12:01 UTC	0
Sep 4, 2026Arrived	Chattanooga	Chicago	Sep 4, 2026, 12:13 UTC	-7