Is UA4577 delayed?

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

Arrived

57 min late

Official source · Updated Sep 20, 2026, 21:14 UTC

Departure

Harrisburg

MDT

Actual

19:25~~18:28~~

Sep 20

Arrival

Chicago

ORD

Actual

16:06~~15:09~~

Sep 20

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 20, 2026, 18:28 UTC
Estimated: Not available
Actual: Sep 20, 2026, 19:25 UTC

Arrival · UTC

Scheduled: Sep 20, 2026, 20:09 UTC
Estimated: Sep 20, 2026, 21:06 UTC
Actual: Sep 20, 2026, 21:06 UTC

View this flight’s market

Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.

MDTORD

Recent arrivals

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

Sun, Sep 20, 2026
MDT → ORD
57 min late
Sat, Sep 19, 2026
MDT → ORD
351 min late
Fri, Sep 18, 2026
MDT → ORD
33 min early
Thu, Sep 17, 2026
MDT → ORD
144 min late
Wed, Sep 16, 2026
MDT → ORD
9 min late

Flight history and details

Aug 22, 2026 — Sep 21, 2026

Observed arrivals: 16
Arrivals over 15 minutes late: 6
Observed cancellations: 0
Observed occurrences: 25

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

UA4577 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 20, 2026Arrived	Harrisburg	Chicago	Sep 20, 2026, 21:06 UTC View this flight’s market	57
Sep 19, 2026Arrived	Harrisburg	Chicago	Sep 20, 2026, 02:01 UTC	351
Sep 18, 2026Arrived	Harrisburg	Chicago	Sep 18, 2026, 19:57 UTC	-33
Sep 17, 2026Arrived	Harrisburg	Chicago	Sep 17, 2026, 22:34 UTC	144
Sep 16, 2026Arrived	Harrisburg	Chicago	Sep 16, 2026, 20:19 UTC	9
Sep 15, 2026Arrived	Harrisburg	Chicago	Sep 15, 2026, 22:19 UTC	129
Sep 14, 2026Arrived	Harrisburg	Chicago	Sep 15, 2026, 00:10 UTC	220
Sep 13, 2026Arrived	Harrisburg	Chicago	Sep 13, 2026, 21:02 UTC	33
Sep 12, 2026Arrived	Harrisburg	Chicago	Sep 12, 2026, 20:00 UTC	-10
Sep 11, 2026Arrived	Harrisburg	Chicago	Sep 11, 2026, 19:53 UTC	-17
Sep 10, 2026Arrived	Harrisburg	Chicago	Sep 10, 2026, 19:57 UTC	-33
Sep 9, 2026Arrived	Harrisburg	Chicago	Sep 9, 2026, 20:08 UTC	-22
Sep 8, 2026Arrived	Harrisburg	Chicago	Sep 8, 2026, 19:43 UTC	-47
Sep 7, 2026Arrived	Dulles	Roanoke	Sep 7, 2026, 13:35 UTC	-7
Sep 4, 2026Arrived	Dulles	Roanoke	Sep 4, 2026, 13:29 UTC	-12
Aug 29, 2026Arrived	Dulles	Roanoke	Aug 29, 2026, 13:36 UTC	-10