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United Airlines

Is UA543 delayed?

No delay reported — UA543 is expected in San Francisco at 13:09 on Sep 26, 24 min early (as of Sep 26, 16:07 UTC). Over its last 50 recorded arrivals, 15 landed more than 15 min late.

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

Estimated arrival

24 min early

Official source · Updated

Departure

Chicago

ORD

Actual

Sep 26

Arrival

San Francisco

SFO

Estimated

Scheduled 13:33

Sep 26

Times shown in airport local time

Service date: · Actual departure date; scheduled departure unavailable (America/Chicago)

Flight details

Departure · UTC

Scheduled
Not available
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Not available
Arrived

16 min early

Official source · Updated

Departure

Buffalo

BUF

Actual

Scheduled 11:00

Sep 26

Arrival

Chicago

ORD

Actual

Scheduled 08:00

Sep 26

Times shown in airport local time

Service date: · Scheduled departure date (UTC)

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Actual
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.

Route overview: Chicago → San FranciscoORDSFO
Route overview

Recent arrivals

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

  • BUF → ORD

    16 min early

  • ORD → SFO

    42 min late

  • BUF → ORD

    26 min early

  • ORD → SFO

    32 min early

  • BUF → ORD

    39 min early
Flight history and details

Aug 27, 2026 — Sep 26, 2026

Observed arrivals
50
Arrivals over 15 minutes late
15
Observed cancellations
0
Observed occurrences
51

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

UA543 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 26, 2026ArrivedBuffaloChicago
View this flight’s market
-16
Sep 25, 2026ArrivedChicagoSan Francisco
42
Sep 25, 2026ArrivedBuffaloChicago
-26
Sep 24, 2026ArrivedChicagoSan Francisco
-32
Sep 24, 2026ArrivedBuffaloChicago
-39
Sep 23, 2026ArrivedChicagoSan Francisco
-20
Sep 23, 2026ArrivedBuffaloChicago
-38
Sep 22, 2026ArrivedChicagoSan Francisco
-24
Sep 22, 2026ArrivedBuffaloChicago
-30
Sep 21, 2026ArrivedChicagoSan Francisco
65
Sep 21, 2026ArrivedBuffaloChicago
14
Sep 20, 2026ArrivedChicagoSan Francisco
57
Sep 20, 2026ArrivedBuffaloChicago
49
Sep 19, 2026ArrivedChicagoSan Francisco
185
Sep 19, 2026ArrivedBuffaloChicago
113
Sep 18, 2026ArrivedChicagoSan Francisco
64
Sep 18, 2026ArrivedBuffaloChicago
-4
Sep 17, 2026ArrivedChicagoSan Francisco
127
Sep 17, 2026ArrivedBuffaloChicago
107
Sep 16, 2026ArrivedChicagoSan Francisco
8
Sep 16, 2026ArrivedBuffaloChicago
10
Sep 15, 2026ArrivedChicagoSan Francisco
34
Sep 15, 2026ArrivedBuffaloChicago
52
Sep 14, 2026ArrivedChicagoSan Francisco
-8
Sep 14, 2026ArrivedBuffaloChicago
-9
Sep 13, 2026ArrivedChicagoSan Francisco
-18
Sep 13, 2026ArrivedBuffaloChicago
3
Sep 12, 2026ArrivedChicagoSan Francisco
-11
Sep 12, 2026ArrivedBuffaloChicago
-19
Sep 11, 2026ArrivedChicagoSan Francisco
33
Sep 11, 2026ArrivedBuffaloChicago
-25
Sep 10, 2026ArrivedChicagoSan Francisco
-12
Sep 10, 2026ArrivedBuffaloChicago
-19
Sep 9, 2026ArrivedChicagoSan Francisco
-3
Sep 9, 2026ArrivedBuffaloChicago
-19
Sep 8, 2026ArrivedChicagoSan Francisco
-4
Sep 8, 2026ArrivedBuffaloChicago
-17
Sep 7, 2026ArrivedChicagoSan Francisco
-12
Sep 7, 2026ArrivedBuffaloChicago
-13
Sep 6, 2026ArrivedChicagoSan Francisco
-27
Sep 5, 2026ArrivedChicagoSan Francisco
188
Sep 5, 2026ArrivedBuffaloChicago
-4
Sep 4, 2026ArrivedChicagoSan Francisco
8
Sep 4, 2026ArrivedBuffaloChicago
-9
Sep 3, 2026ArrivedChicagoSan Francisco
40
Sep 2, 2026ArrivedChicagoSan Francisco
8
Sep 1, 2026ArrivedChicagoSan Francisco
42
Aug 30, 2026ArrivedChicagoSan Francisco
-7
Aug 29, 2026ArrivedChicagoSan Francisco
-4
Aug 28, 2026ArrivedChicagoSan Francisco
4

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