Is UA4187 delayed?

Service date: Sep 18, 2026 · Scheduled departure date (UTC)

Arrived

7 min early

Official source · Updated Sep 18, 2026, 20:08 UTC

Departure

Dayton

DAY

Actual

19:01~~19:04~~

Sep 18

Arrival

Dulles

IAD

Actual

16:08~~16:16~~

Sep 18

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 18, 2026, 19:04 UTC
Estimated: Not available
Actual: Sep 18, 2026, 19:01 UTC

Arrival · UTC

Scheduled: Sep 18, 2026, 20:16 UTC
Estimated: Not available
Actual: Sep 18, 2026, 20:08 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.

DAYIAD

Recent arrivals

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

Fri, Sep 18, 2026
DAY → IAD
7 min early
Thu, Sep 17, 2026
DAY → IAD
35 min late
Wed, Sep 16, 2026
DAY → IAD
21 min early
Mon, Sep 14, 2026
DAY → IAD
22 min early
Sat, Sep 12, 2026
DAY → IAD
14 min early

Flight history and details

Aug 20, 2026 — Sep 19, 2026

Observed arrivals: 15
Arrivals over 15 minutes late: 1
Observed cancellations: 4
Observed occurrences: 28

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

UA4187 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 18, 2026Arrived	Dayton	Dulles	Sep 18, 2026, 20:08 UTC View this flight’s market	-7
Sep 17, 2026Arrived	Dayton	Dulles	Sep 17, 2026, 20:51 UTC	35
Sep 16, 2026Arrived	Dayton	Dulles	Sep 16, 2026, 19:54 UTC	-21
Sep 14, 2026Arrived	Dayton	Dulles	Sep 14, 2026, 19:53 UTC	-22
Sep 12, 2026Arrived	Dayton	Dulles	Sep 12, 2026, 20:01 UTC	-14
Sep 11, 2026Arrived	Dayton	Dulles	Sep 11, 2026, 20:10 UTC	-5
Sep 10, 2026Arrived	Dayton	Dulles	Sep 10, 2026, 19:55 UTC	-20
Sep 9, 2026Arrived	Dayton	Dulles	Sep 9, 2026, 19:49 UTC	-26
Sep 8, 2026Arrived	Little Rock	Houston	Sep 8, 2026, 18:10 UTC	-19
Sep 7, 2026Arrived	Newark	Buffalo	Sep 8, 2026, 02:28 UTC	-37
Sep 6, 2026Arrived	Newark	Buffalo	Sep 7, 2026, 02:36 UTC	-29
Sep 5, 2026Arrived	Newark	Buffalo	Sep 6, 2026, 02:32 UTC	-33
Sep 4, 2026Arrived	Newark	Buffalo	Sep 5, 2026, 03:04 UTC	-1
Sep 2, 2026Cancelled	Newark	Buffalo	Not available	Not available
Sep 1, 2026Cancelled	Newark	Buffalo	Not available	Not available
Aug 28, 2026Arrived	Newark	Buffalo	Aug 29, 2026, 02:42 UTC	-29
Aug 27, 2026Cancelled	Newark	Buffalo	Not available	Not available
Aug 21, 2026Arrived	Newark	Buffalo	Aug 22, 2026, 02:28 UTC	-43
Aug 20, 2026Cancelled	Newark	Buffalo	Not available	Not available