United Airlines

Is UA4556 delayed?

No — UA4556 landed in Dulles 17 min early, at 20:59 on Sep 23 (as of Sep 24, 00:59 UTC). Over its last 18 recorded arrivals, 4 landed more than 15 min late.

Arrived

17 min early

Official source · Updated Sep 24, 2026, 00:59 UTC

Departure

Detroit

DTW

Actual

19:53~~20:03~~

Sep 23

Arrival

Dulles

IAD

Actual

20:59~~21:17~~

Sep 23

Times shown in airport local time

Service date: Sep 23, 2026 · Scheduled departure date (America/Detroit)

Flight details

Departure · UTC

Scheduled: Sep 24, 2026, 00:03 UTC
Estimated: Not available
Actual: Sep 23, 2026, 23:53 UTC

Arrival · UTC

Scheduled: Sep 24, 2026, 01:17 UTC
Estimated: Not available
Actual: Sep 24, 2026, 00:59 UTC

Route overview

Recent arrivals

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

Wed, Sep 23, 2026
DTW → IAD
17 min early
Tue, Sep 22, 2026
DTW → IAD
9 min early
Mon, Sep 21, 2026
DTW → IAD
47 min late
Sun, Sep 20, 2026
DTW → IAD
9 min late
Fri, Sep 18, 2026
DTW → IAD
21 min early

Flight history and details

Aug 27, 2026 — Sep 26, 2026

Observed arrivals: 18
Arrivals over 15 minutes late: 4
Observed cancellations: 0
Observed occurrences: 21

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

UA4556 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 23, 2026Arrived	Detroit	Dulles	Sep 24, 2026, 00:59 UTC	-17
Sep 22, 2026Arrived	Detroit	Dulles	Sep 23, 2026, 01:07 UTC	-9
Sep 21, 2026Arrived	Detroit	Dulles	Sep 22, 2026, 02:04 UTC	47
Sep 20, 2026Arrived	Detroit	Dulles	Sep 21, 2026, 01:26 UTC	9
Sep 18, 2026Arrived	Detroit	Dulles	Sep 19, 2026, 00:55 UTC	-21
Sep 17, 2026Arrived	Detroit	Dulles	Sep 18, 2026, 02:57 UTC	100
Sep 16, 2026Arrived	Detroit	Dulles	Sep 17, 2026, 00:59 UTC	-17
Sep 15, 2026Arrived	Detroit	Dulles	Sep 16, 2026, 00:59 UTC	-17
Sep 14, 2026Arrived	Detroit	Dulles	Sep 15, 2026, 00:55 UTC	-21
Sep 13, 2026Arrived	Detroit	Dulles	Sep 14, 2026, 01:31 UTC	14
Sep 11, 2026Arrived	Detroit	Dulles	Sep 12, 2026, 01:04 UTC	-12
Sep 10, 2026Arrived	Detroit	Dulles	Sep 11, 2026, 01:47 UTC	30
Sep 9, 2026Arrived	Detroit	Dulles	Sep 10, 2026, 01:13 UTC	-3
Sep 8, 2026Arrived	Detroit	Dulles	Sep 9, 2026, 01:29 UTC	12
Sep 7, 2026Arrived	Dulles	Norfolk	Sep 7, 2026, 22:30 UTC	2
Sep 7, 2026Arrived	Richmond	Dulles	Sep 7, 2026, 00:33 UTC	-15
Sep 6, 2026Arrived	Richmond	Dulles	Sep 6, 2026, 00:22 UTC	-26
Sep 5, 2026Arrived	Richmond	Dulles	Sep 5, 2026, 02:35 UTC	106