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Is AC4531 delayed?

Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)

Arrived

5 min early

Official source · Updated

Departure

Sacramento

SMF

Scheduled

Not available

Arrival

San Francisco

SFO

Actual

Scheduled 15:12

Sep 15

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Not available
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Actual

Operating flight: UAL5323

Recent arrivals

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

  • SMF → SFO

    37 min late

  • SMF → SFO

    42 min late

  • SMF → SFO

    5 min early

  • SMF → SFO

    48 min late

  • SMF → SFO

    33 min late
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
15
Arrivals over 15 minutes late
5
Observed cancellations
0
Observed occurrences
15

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

AC4531 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 17, 2026ArrivedSacramentoSan Francisco
37
Sep 16, 2026ArrivedSacramentoSan Francisco
42
Sep 15, 2026ArrivedSacramentoSan Francisco
-5
Sep 14, 2026ArrivedSacramentoSan Francisco
48
Sep 13, 2026ArrivedSacramentoSan Francisco
33
Sep 12, 2026ArrivedSacramentoSan Francisco
-5
Sep 11, 2026ArrivedSacramentoSan Francisco
-36
Sep 10, 2026ArrivedSacramentoSan Francisco
3
Sep 9, 2026ArrivedSacramentoSan Francisco
-15
Sep 8, 2026ArrivedSacramentoSan Francisco
-1
Sep 7, 2026ArrivedSacramentoSan Francisco
-16
Sep 6, 2026ArrivedSacramentoSan Francisco
2
Sep 5, 2026ArrivedSacramentoSan Francisco
-20
Sep 4, 2026ArrivedSacramentoSan Francisco
2
Sep 3, 2026ArrivedSacramentoSan Francisco
30

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