Is AC4077 delayed?

Yes — AC4077 is running 185 min late, now expected in San Francisco at 22:48 on Sep 28. Over its last 25 recorded arrivals, 8 landed more than 15 min late.

Estimated arrivalLast reported

185 min late

This update may be out of date. Check with your airline.

Update time unavailable

Departure

Las Vegas

LAS

Scheduled

—

Not available

Arrival

San Francisco

SFO

Estimated

Scheduled 19:43

22:48

Sep 28

Times shown in airport local time

Service date: Sep 28, 2026 · Scheduled arrival date; departure time unavailable (America/Los_Angeles)

Flight details

Departure · UTC

Scheduled: Not available
Estimated: Not available
Actual: Not available

Arrival · UTC

Scheduled: Sep 29, 2026, 02:43 UTC
Estimated: Sep 29, 2026, 05:48 UTC
Actual: Not available

Operating flight: UAL1603

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Las Vegas → San Francisco

Recent arrivals

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

Sun, Sep 27, 2026
Las Vegas → San Francisco
43 min late
Sat, Sep 26, 2026
Las Vegas → San Francisco
27 min early
Fri, Sep 25, 2026
Las Vegas → San Francisco
15 min early
Thu, Sep 24, 2026
Las Vegas → San Francisco
46 min late
Wed, Sep 23, 2026
Las Vegas → San Francisco
29 min early

Flight history and details

Aug 30, 2026 — Sep 29, 2026

Observed arrivals: 25
Arrivals over 15 minutes late: 8
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

AC4077 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 27, 2026Arrived	Las Vegas	San Francisco	Sep 28, 2026, 03:26 UTC	43
Sep 26, 2026Arrived	Las Vegas	San Francisco	Sep 27, 2026, 02:21 UTC	-27
Sep 25, 2026Arrived	Las Vegas	San Francisco	Sep 26, 2026, 02:28 UTC	-15
Sep 24, 2026Arrived	Las Vegas	San Francisco	Sep 25, 2026, 03:34 UTC	46
Sep 23, 2026Arrived	Las Vegas	San Francisco	Sep 24, 2026, 02:24 UTC	-29
Sep 22, 2026Arrived	Las Vegas	San Francisco	Sep 23, 2026, 02:22 UTC	-31
Sep 21, 2026Arrived	Las Vegas	San Francisco	Sep 22, 2026, 03:10 UTC	17
Sep 20, 2026Arrived	Las Vegas	San Francisco	Sep 21, 2026, 02:59 UTC	6
Sep 19, 2026Arrived	Las Vegas	San Francisco	Sep 20, 2026, 02:24 UTC	-29
Sep 18, 2026Arrived	Las Vegas	San Francisco	Sep 19, 2026, 03:22 UTC	29
Sep 17, 2026Arrived	Las Vegas	San Francisco	Sep 18, 2026, 03:23 UTC	30
Sep 16, 2026Arrived	Las Vegas	San Francisco	Sep 17, 2026, 02:42 UTC	-11
Sep 15, 2026Arrived	Las Vegas	San Francisco	Sep 16, 2026, 03:24 UTC	31
Sep 14, 2026Arrived	Las Vegas	San Francisco	Sep 15, 2026, 02:30 UTC	-23
Sep 13, 2026Arrived	Las Vegas	San Francisco	Sep 14, 2026, 03:36 UTC	43
Sep 12, 2026Arrived	Las Vegas	San Francisco	Sep 13, 2026, 02:43 UTC	-10
Sep 11, 2026Arrived	Las Vegas	San Francisco	Sep 12, 2026, 02:33 UTC	-20
Sep 10, 2026Arrived	Las Vegas	San Francisco	Sep 11, 2026, 02:46 UTC	-7
Sep 9, 2026Arrived	Las Vegas	San Francisco	Sep 10, 2026, 02:27 UTC	-26
Sep 8, 2026Arrived	Las Vegas	San Francisco	Sep 9, 2026, 02:41 UTC	-12
Sep 7, 2026Arrived	Las Vegas	San Francisco	Sep 8, 2026, 03:09 UTC	16
Sep 6, 2026Arrived	Las Vegas	San Francisco	Sep 7, 2026, 03:07 UTC	14
Sep 5, 2026Arrived	Las Vegas	San Francisco	Sep 6, 2026, 02:27 UTC	-26
Sep 4, 2026Arrived	Las Vegas	San Francisco	Sep 5, 2026, 02:40 UTC	-13
Sep 3, 2026Arrived	Las Vegas	San Francisco	Sep 4, 2026, 02:58 UTC	5