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United Airlines

Is UA1023 delayed?

Service date: · Scheduled departure date (America/Denver)

Arrived

37 min early

Updated

Departure

Denver

DEN

Actual

Scheduled 15:50

Aug 24

Arrival

Chicago

ORD

Actual

Scheduled 19:30

Aug 24

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Route overview: Denver → ChicagoDENORD
Route overview

Recent arrivals

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

  • SMF → DEN

    13 min early

  • SMF → DEN

    6 min early

  • SMF → DEN

    21 min early

  • SMF → DEN

    20 min early

  • SMF → DEN

    21 min early
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
28
Arrivals over 15 minutes late
2
Observed cancellations
0
Observed occurrences
31

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

UA1023 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 17, 2026ArrivedSacramentoDenver
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-13
Sep 16, 2026ArrivedSacramentoDenver
-6
Sep 15, 2026ArrivedSacramentoDenver
-21
Sep 13, 2026ArrivedSacramentoDenver
-20
Sep 11, 2026ArrivedSacramentoDenver
-21
Sep 10, 2026ArrivedSacramentoDenver
-14
Sep 9, 2026ArrivedSacramentoDenver
-19
Sep 8, 2026ArrivedSacramentoDenver
-25
Sep 7, 2026ArrivedDenverChicago
-14
Sep 7, 2026ArrivedSacramentoDenver
-22
Sep 6, 2026ArrivedDenverChicago
-3
Sep 6, 2026ArrivedSacramentoDenver
-17
Sep 5, 2026ArrivedDenverChicago
-43
Sep 5, 2026ArrivedSacramentoDenver
-21
Sep 4, 2026ArrivedDenverChicago
-23
Sep 4, 2026ArrivedSacramentoDenver
-28
Sep 3, 2026ArrivedDenverChicago
-13
Sep 2, 2026ArrivedDenverChicago
-36
Sep 1, 2026ArrivedDenverChicago
-35
Aug 30, 2026ArrivedDenverChicago
44
Aug 29, 2026ArrivedDenverChicago
-31
Aug 28, 2026ArrivedDenverChicago
-26
Aug 27, 2026ArrivedDenverChicago
-36
Aug 26, 2026ArrivedDenverChicago
-27
Aug 25, 2026ArrivedDenverChicago
-35
Aug 24, 2026ArrivedDenverChicago
-37
Aug 23, 2026ArrivedDenverChicago
-14
Aug 22, 2026ArrivedDenverChicago
17

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