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United Airlines

Is UA1921 delayed?

Each route and date is shown separately. Confirm that both airports match your booking.

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

Arrived

36 min early

Official source · Updated

Departure

San Francisco

SFO

Actual

Scheduled 10:05

Aug 24

Arrival

Chicago

ORD

Actual

Scheduled 16:39

Aug 24

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual

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

Estimated arrivalLast reported

19 min late

This update may be out of date.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

Update time unavailable

Departure

Reno

RNO

Actual

Scheduled 07:55

Aug 24

Arrival

San Francisco

SFO

Estimated

Scheduled 09:12

Aug 24

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Not available
Route overview: San Francisco → ChicagoSFOORD
Route overview

Recent arrivals

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

  • ORD → IAH

    6 min late

  • ORD → IAH

    8 min late

  • ORD → IAH

    59 min late

  • ORD → IAH

    19 min early

  • ORD → IAH

    44 min late
Flight history and details

Aug 23, 2026 — Sep 22, 2026

Observed arrivals
51
Arrivals over 15 minutes late
16
Observed cancellations
0
Observed occurrences
55

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

UA1921 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 21, 2026ArrivedChicagoHouston
6
Sep 20, 2026ArrivedChicagoHouston
8
Sep 19, 2026ArrivedChicagoHouston
59
Sep 18, 2026ArrivedChicagoHouston
-19
Sep 17, 2026ArrivedChicagoHouston
44
Sep 16, 2026ArrivedChicagoHouston
14
Sep 15, 2026ArrivedChicagoHouston
12
Sep 14, 2026ArrivedChicagoHouston
-28
Sep 12, 2026ArrivedChicagoHouston
-20
Sep 11, 2026ArrivedChicagoHouston
-1
Sep 10, 2026ArrivedChicagoHouston
-5
Sep 9, 2026ArrivedChicagoHouston
9
Sep 8, 2026ArrivedChicagoHouston
-11
Sep 7, 2026ArrivedChicagoHouston
-2
Sep 7, 2026ArrivedSan FranciscoChicago
-20
Sep 6, 2026ArrivedChicagoHouston
83
Sep 6, 2026ArrivedSan FranciscoChicago
-48
Sep 6, 2026ArrivedRenoSan Francisco
23
Sep 5, 2026ArrivedSan FranciscoChicago
232
Sep 5, 2026ArrivedRenoSan Francisco
46
Sep 4, 2026ArrivedChicagoHouston
13
Sep 4, 2026ArrivedSan FranciscoChicago
-27
Sep 4, 2026ArrivedRenoSan Francisco
12
Sep 3, 2026ArrivedSan FranciscoChicago
13
Sep 3, 2026ArrivedRenoSan Francisco
7
Sep 2, 2026ArrivedChicagoHouston
-7
Sep 2, 2026ArrivedSan FranciscoChicago
-48
Sep 2, 2026ArrivedRenoSan Francisco
6
Sep 1, 2026ArrivedChicagoHouston
-9
Sep 1, 2026ArrivedSan FranciscoChicago
-19
Sep 1, 2026ArrivedRenoSan Francisco
36
Aug 31, 2026ArrivedChicagoHouston
-24
Aug 31, 2026ArrivedSan FranciscoChicago
105
Aug 31, 2026ArrivedRenoSan Francisco
26
Aug 30, 2026ArrivedChicagoHouston
81
Aug 30, 2026ArrivedSan FranciscoChicago
12
Aug 30, 2026ArrivedRenoSan Francisco
4
Aug 29, 2026ArrivedChicagoHouston
40
Aug 29, 2026ArrivedSan FranciscoChicago
-37
Aug 29, 2026ArrivedRenoSan Francisco
41
Aug 28, 2026ArrivedChicagoHouston
-35
Aug 28, 2026ArrivedSan FranciscoChicago
-23
Aug 28, 2026ArrivedRenoSan Francisco
72
Aug 27, 2026ArrivedChicagoHouston
152
Aug 27, 2026ArrivedSan FranciscoChicago
-13
Aug 27, 2026ArrivedRenoSan Francisco
14
Aug 26, 2026ArrivedSan FranciscoChicago
-45
Aug 26, 2026ArrivedRenoSan Francisco
49
Aug 25, 2026ArrivedSan FranciscoChicago
-38
Aug 25, 2026ArrivedRenoSan Francisco
23
Aug 24, 2026ArrivedSan FranciscoChicago
-36

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